404
FNUS51 KBOX 200807
FWFBOX
FIRE WEATHER PLANNING FORECAST FOR SOUTHERN NEW ENGLAND
NATIONAL WEATHER SERVICE BOSTON/NORTON MA
407 AM EDT THU AUG 20 2026
DISCUSSION
CHANCES FOR SHOWERS THIS AFTERNOON, ESPECIALLY TOWARDS THE SOUTH
COAST AND INTO RI, SE MA. THE INTERIOR DRIES OUT A BIT FOR FRIDAY
WHILE SCATTERED SHOWERS REMAIN A POSSIBILITY FOR THE COASTAL
PLAIN.
LOWEST RELATIVE HUMIDITY VALUES WILL RANGE FROM 50 TO 60 PERCENT
TODAY AND 50 TO 75 PERCENT FRIDAY. VALUES MAY BE SLIGHTLY HIGHER
ALONG THE CAPE AND NANTUCKET.
OUTLOOK...FRIDAY NIGHT THROUGH WEDNESDAY
CHANCE FOR SOME SHOWERS FRIDAY NIGHT TOWARDS SE MA, CAPE COD, AND
THE ISLANDS, THOUGH THEY ARE LOW. UNSETTLED WEEKEND WITH A CHANCE
FOR SHOWERS OR A THUNDERSTORM BOTH DAYS. DRIER CONDITIONS RETURN
FOR EARLY NEXT WEEK.
MAZ015-202000-
SUFFOLK MA-
INCLUDING THE CITY OF BOSTON
407 AM EDT THU AUG 20 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY PCLDY
PRECIP TYPE NONE SHOWERS SHOWERS
CHANCE PRECIP (%) 10 60 30
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 87 (0) 62 (-7) 79
RH % (24H TREND) 48 (+15) 87 (-10) 60
20FT WND AM(MPH) LGT/VAR NE 5
20FT WND PM(MPH) LGT/VAR LGT/VAR NE 7
PRECIP AMOUNT 0.00 0.16 0.12
PRECIP DURATION 3 1
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING CONTINUING
MIXING HGT (FT-AGL) 4780 430 3520
TRANSPORT WND (KTS) S 6 N 6 E 11
VENT RATE (KT-FT) 28680 2580 38720
MAX ADI EARLY 18 GEN POOR 10 POOR 26 FAIR
MAX ADI LATE 21 FAIR 5 VERY POOR 27 FAIR
MAX LVORI EARLY 3 5 3
MAX LVORI LATE 3 5 3
MIN VSBY EARLY 9 9 7
MIN VSBY LATE 9 9 8
SUNSHINE HOURS N/A N/A N/A
CWR 0 30 20
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE MID 60S. NORTHEAST WINDS 5 TO 10 MPH.
SATURDAY
SHOWERS. HIGHS IN THE MID 70S. NORTHEAST WINDS 5 TO
10 MPH.
SATURDAY NIGHT
SHOWERS. LOWS IN THE MID 60S. NORTHEAST WINDS
5 TO 10 MPH.
SUNDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. HIGHS IN THE
LOWER 80S. SOUTHEAST WINDS AROUND 5 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE MID 60S. SOUTHWEST WINDS AROUND 5 MPH.
MONDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. WEST WINDS 5 TO
10 MPH.
MONDAY NIGHT THROUGH WEDNESDAY
MOSTLY CLEAR. LOWS IN THE LOWER
60S. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS 5 TO 10 MPH.
MAZ016-202000-
EASTERN NORFOLK MA-
INCLUDING THE CITY OF QUINCY
407 AM EDT THU AUG 20 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY PCLDY
PRECIP TYPE NONE SHOWERS SHOWERS
CHANCE PRECIP (%) 10 60 30
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 87 (0) 62 (-5) 78
RH % (24H TREND) 46 (+12) 87 (-13) 64
20FT WND AM(MPH) LGT/VAR NE 5
20FT WND PM(MPH) LGT/VAR LGT/VAR NE 6
PRECIP AMOUNT 0.00 0.24 0.16
PRECIP DURATION 4 2
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING CONTINUING
MIXING HGT (FT-AGL) 5520 420 3020
TRANSPORT WND (KTS) W 6 N 6 E 10
VENT RATE (KT-FT) 33120 2520 30200
MAX ADI EARLY 26 FAIR 9 POOR 10 POOR
MAX ADI LATE 37 FAIR 5 VERY POOR 27 FAIR
MAX LVORI EARLY 2 5 4
MAX LVORI LATE 2 5 4
MIN VSBY EARLY 9 9 7
MIN VSBY LATE 9 9 8
SUNSHINE HOURS N/A N/A N/A
CWR 0 40 30
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE LOWER 60S. NORTHEAST WINDS AROUND 5 MPH.
SATURDAY
SHOWERS. HIGHS IN THE MID 70S. NORTHEAST WINDS 5 TO
10 MPH.
SATURDAY NIGHT
SHOWERS. LOWS IN THE MID 60S. NORTHEAST WINDS
AROUND 5 MPH.
SUNDAY AND SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF
SHOWERS. LOWS IN THE MID 60S. HIGHS IN THE LOWER 80S. SOUTHWEST
WINDS AROUND 5 MPH.
MONDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS
5 TO 10 MPH.
MONDAY NIGHT THROUGH WEDNESDAY
MOSTLY CLEAR. LOWS AROUND 60.
HIGHS IN THE LOWER 80S. SOUTHWEST WINDS 5 TO 10 MPH.
MAZ013-202000-
WESTERN NORFOLK MA-
INCLUDING THE CITIES OF FOXBOROUGH AND NORWOOD
407 AM EDT THU AUG 20 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY PCLDY
PRECIP TYPE NONE SHOWERS SHOWERS
CHANCE PRECIP (%) 20 60 30
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 86 (0) 59 (-7) 79
RH % (24H TREND) 46 (+7) 93 (-7) 62
20FT WND AM(MPH) LGT/VAR LGT/VAR
20FT WND PM(MPH) LGT/VAR LGT/VAR NE 5
PRECIP AMOUNT 0.00 0.27 0.10
PRECIP DURATION 5 2
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING CONTINUING
MIXING HGT (FT-AGL) 6240 430 4690
TRANSPORT WND (KTS) W 8 N 6 E 10
VENT RATE (KT-FT) 49920 2580 46900
MAX ADI EARLY 38 FAIR 14 GEN POOR 10 POOR
MAX ADI LATE 67 GOOD 4 VERY POOR 55 GEN GOOD
MAX LVORI EARLY 2 6 4
MAX LVORI LATE 2 6 4
MIN VSBY EARLY 9 9 7
MIN VSBY LATE 9 7 8
SUNSHINE HOURS N/A N/A N/A
CWR 0 40 20
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS
AROUND 60. NORTHEAST WINDS AROUND 5 MPH.
SATURDAY
SHOWERS. HIGHS IN THE MID 70S. NORTHEAST WINDS AROUND
5 MPH.
SATURDAY NIGHT
SHOWERS. LOWS IN THE LOWER 60S. NORTHEAST WINDS
AROUND 5 MPH.
SUNDAY AND SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF
SHOWERS. LOWS IN THE LOWER 60S. HIGHS IN THE LOWER 80S. SOUTHWEST
WINDS AROUND 5 MPH.
MONDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. WEST WINDS AROUND
5 MPH.
MONDAY NIGHT THROUGH WEDNESDAY
MOSTLY CLEAR. LOWS IN THE UPPER
50S. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS AROUND 5 MPH.
MAZ014-202000-
SOUTHEAST MIDDLESEX MA-
INCLUDING THE CITY OF CAMBRIDGE
407 AM EDT THU AUG 20 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY PCLDY
PRECIP TYPE NONE SHOWERS SHOWERS
CHANCE PRECIP (%) 10 60 20
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 86 (-1) 60 (-7) 79
RH % (24H TREND) 48 (+14) 93 (-7) 58
20FT WND AM(MPH) LGT/VAR LGT/VAR
20FT WND PM(MPH) LGT/VAR LGT/VAR NE 6
PRECIP AMOUNT 0.00 0.13 0.05
PRECIP DURATION 3 1
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING CONTINUING
MIXING HGT (FT-AGL) 6210 430 4760
TRANSPORT WND (KTS) W 8 N 5 E 10
VENT RATE (KT-FT) 49680 2150 47600
MAX ADI EARLY 37 FAIR 13 GEN POOR 27 FAIR
MAX ADI LATE 57 GEN GOOD 4 VERY POOR 45 GEN GOOD
MAX LVORI EARLY 2 6 2
MAX LVORI LATE 2 6 2
MIN VSBY EARLY 9 9 8
MIN VSBY LATE 9 9 8
SUNSHINE HOURS N/A N/A N/A
CWR 0 30 20
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE LOWER 60S. NORTHEAST WINDS AROUND 5 MPH.
SATURDAY
SHOWERS. HIGHS IN THE MID 70S. NORTHEAST WINDS 5 TO
10 MPH.
SATURDAY NIGHT
SHOWERS. LOWS IN THE LOWER 60S. NORTHEAST WINDS
AROUND 5 MPH.
SUNDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. HIGHS IN THE
LOWER 80S. SOUTH WINDS AROUND 5 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE MID 60S. SOUTHWEST WINDS AROUND 5 MPH.
MONDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. WEST WINDS AROUND
5 MPH.
MONDAY NIGHT THROUGH WEDNESDAY
MOSTLY CLEAR. LOWS IN THE UPPER
50S. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS AROUND 5 MPH.
MAZ007-202000-
EASTERN ESSEX MA-
INCLUDING THE CITY OF GLOUCESTER
407 AM EDT THU AUG 20 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY PCLDY
PRECIP TYPE NONE SHOWERS SHOWERS
CHANCE PRECIP (%) 10 60 20
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 84 (0) 58 (-9) 77
RH % (24H TREND) 49 (+12) 100 (0) 58
20FT WND AM(MPH) LGT/VAR NE 6
20FT WND PM(MPH) LGT/VAR LGT/VAR NE 6
PRECIP AMOUNT 0.00 0.08 0.04
PRECIP DURATION 2 1
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING CONTINUING
MIXING HGT (FT-AGL) 3820 400 3280
TRANSPORT WND (KTS) S 5 SW 6 NE 10
VENT RATE (KT-FT) 19100 2400 32800
MAX ADI EARLY 14 GEN POOR 9 POOR 25 FAIR
MAX ADI LATE 12 POOR 6 VERY POOR 28 FAIR
MAX LVORI EARLY 3 6 3
MAX LVORI LATE 3 6 3
MIN VSBY EARLY 9 9 8
MIN VSBY LATE 9 9 8
SUNSHINE HOURS N/A N/A N/A
CWR 0 20 20
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE LOWER 60S. NORTHEAST WINDS 5 TO 10 MPH.
SATURDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY. HIGHS IN THE LOWER
70S. NORTHEAST WINDS 5 TO 10 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY WITH SHOWERS LIKELY. LOWS IN THE
LOWER 60S. NORTHEAST WINDS 5 TO 10 MPH.
SUNDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. HIGHS IN THE
UPPER 70S. SOUTHEAST WINDS AROUND 5 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE MID 60S. SOUTHWEST WINDS AROUND 5 MPH.
MONDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS
5 TO 10 MPH.
MONDAY NIGHT THROUGH WEDNESDAY
MOSTLY CLEAR. LOWS AROUND 60.
HIGHS IN THE LOWER 80S. SOUTH WINDS AROUND 5 MPH.
MAZ006-202000-
WESTERN ESSEX MA-
INCLUDING THE CITY OF LAWRENCE
407 AM EDT THU AUG 20 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY PCLDY
PRECIP TYPE NONE SHOWERS SHOWERS
CHANCE PRECIP (%) 10 60 20
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 85 (-1) 58 (-8) 79
RH % (24H TREND) 46 (+10) 97 (-3) 56
20FT WND AM(MPH) LGT/VAR LGT/VAR
20FT WND PM(MPH) LGT/VAR LGT/VAR E 5
PRECIP AMOUNT 0.00 0.06 0.02
PRECIP DURATION 2 1
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING CONTINUING
MIXING HGT (FT-AGL) 6270 420 4470
TRANSPORT WND (KTS) W 7 N 7 NE 10
VENT RATE (KT-FT) 43890 2940 44700
MAX ADI EARLY 36 FAIR 14 GEN POOR 33 FAIR
MAX ADI LATE 57 GEN GOOD 4 VERY POOR 53 GEN GOOD
MAX LVORI EARLY 2 6 2
MAX LVORI LATE 2 6 2
MIN VSBY EARLY 9 9 8
MIN VSBY LATE 9 9 8
SUNSHINE HOURS N/A N/A N/A
CWR 0 20 20
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE UPPER 50S. NORTHEAST WINDS AROUND 5 MPH.
SATURDAY
SHOWERS. HIGHS IN THE LOWER 70S. NORTHEAST WINDS
AROUND 5 MPH.
SATURDAY NIGHT
SHOWERS. LOWS AROUND 60. NORTHEAST WINDS AROUND
5 MPH.
SUNDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. HIGHS IN THE
LOWER 80S. SOUTHEAST WINDS AROUND 5 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE LOWER 60S. SOUTHWEST WINDS AROUND 5 MPH.
MONDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. WEST WINDS 5 TO
10 MPH.
MONDAY NIGHT THROUGH WEDNESDAY
MOSTLY CLEAR. LOWS IN THE UPPER
50S. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS AROUND 5 MPH.
MAZ005-202000-
CENTRAL MIDDLESEX MA-
INCLUDING THE CITIES OF FRAMINGHAM AND LOWELL
407 AM EDT THU AUG 20 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY PCLDY
PRECIP TYPE NONE SHOWERS SHOWERS
CHANCE PRECIP (%) 20 60 20
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 86 (0) 57 (-8) 80
RH % (24H TREND) 46 (+12) 97 (-3) 54
20FT WND AM(MPH) LGT/VAR LGT/VAR
20FT WND PM(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.13 0.03
PRECIP DURATION 3 1
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING CONTINUING
MIXING HGT (FT-AGL) 6220 420 5570
TRANSPORT WND (KTS) W 8 NW 5 E 9
VENT RATE (KT-FT) 49760 2100 50130
MAX ADI EARLY 41 GEN GOOD 18 GEN POOR 30 FAIR
MAX ADI LATE 65 GOOD 4 VERY POOR 55 GEN GOOD
MAX LVORI EARLY 2 6 2
MAX LVORI LATE 2 6 2
MIN VSBY EARLY 9 9 8
MIN VSBY LATE 9 9 8
SUNSHINE HOURS N/A N/A N/A
CWR 0 20 20
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE UPPER 50S. NORTHEAST WINDS AROUND 5 MPH.
SATURDAY
SHOWERS. HIGHS IN THE LOWER 70S. NORTHEAST WINDS 5 TO
10 MPH.
SATURDAY NIGHT
SHOWERS. LOWS AROUND 60. NORTHEAST WINDS AROUND
5 MPH.
SUNDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY. HIGHS IN THE LOWER
80S. SOUTH WINDS AROUND 5 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE LOWER 60S. SOUTHWEST WINDS AROUND 5 MPH.
MONDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. WEST WINDS AROUND
5 MPH.
MONDAY NIGHT THROUGH WEDNESDAY
MOSTLY CLEAR. LOWS IN THE UPPER
50S. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS AROUND 5 MPH.
MAZ012-202000-
SOUTHERN WORCESTER MA-
INCLUDING THE CITIES OF MILFORD AND WORCESTER
407 AM EDT THU AUG 20 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY PCLDY
PRECIP TYPE NONE SHOWERS SHOWERS
CHANCE PRECIP (%) 20 60 20
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 85 (+1) 57 (-8) 79
RH % (24H TREND) 49 (+9) 100 (0) 58
20FT WND AM(MPH) LGT/VAR LGT/VAR
20FT WND PM(MPH) LGT/VAR LGT/VAR NE 5
PRECIP AMOUNT 0.00 0.20 0.03
PRECIP DURATION 4 1
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING CONTINUING
MIXING HGT (FT-AGL) 5570 420 5950
TRANSPORT WND (KTS) W 8 N 5 E 8
VENT RATE (KT-FT) 44560 2100 47600
MAX ADI EARLY 41 GEN GOOD 15 GEN POOR 26 FAIR
MAX ADI LATE 58 GEN GOOD 4 VERY POOR 50 GEN GOOD
MAX LVORI EARLY 3 7 4
MAX LVORI LATE 3 7 4
MIN VSBY EARLY 9 9 8
MIN VSBY LATE 9 7 8
SUNSHINE HOURS N/A N/A N/A
CWR 0 40 10
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE UPPER 50S. NORTHEAST WINDS AROUND 5 MPH.
SATURDAY AND SATURDAY NIGHT
SHOWERS. LOWS AROUND 60. HIGHS IN
THE LOWER 70S. NORTHEAST WINDS 5 TO 10 MPH.
SUNDAY AND SUNDAY NIGHT
MOSTLY CLOUDY WITH SHOWERS LIKELY.
LOWS IN THE LOWER 60S. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS
AROUND 5 MPH.
MONDAY
MOSTLY SUNNY. HIGHS AROUND 80. WEST WINDS AROUND 5 MPH.
MONDAY NIGHT THROUGH WEDNESDAY
MOSTLY CLEAR. LOWS IN THE MID
50S. HIGHS AROUND 80. SOUTHWEST WINDS AROUND 5 MPH.
MAZ004-202000-
NORTHERN WORCESTER MA-
INCLUDING THE CITIES OF BARRE AND FITCHBURG
407 AM EDT THU AUG 20 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY PCLDY
PRECIP TYPE NONE SHOWERS NONE
CHANCE PRECIP (%) 20 60 10
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 82 (+1) 54 (-8) 80
RH % (24H TREND) 49 (+11) 100 (0) 50
20FT WND AM(MPH) LGT/VAR LGT/VAR
20FT WND PM(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.12 0.00
PRECIP DURATION 4
PRECIP BEGIN 6 PM
PRECIP END 6 AM
MIXING HGT (FT-AGL) 5200 410 6280
TRANSPORT WND (KTS) W 8 NW 5 E 7
VENT RATE (KT-FT) 41600 2050 43960
MAX ADI EARLY 35 FAIR 13 GEN POOR 56 GEN GOOD
MAX ADI LATE 49 GEN GOOD 5 VERY POOR 62 GOOD
MAX LVORI EARLY 3 7 2
MAX LVORI LATE 3 7 2
MIN VSBY EARLY 8 9 8
MIN VSBY LATE 9 8 9
SUNSHINE HOURS N/A N/A N/A
CWR 0 20 0
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE UPPER 50S. NORTHEAST WINDS 5 TO 10 MPH.
SATURDAY AND SATURDAY NIGHT
SHOWERS. LOWS IN THE UPPER 50S.
HIGHS IN THE LOWER 70S. NORTHEAST WINDS 5 TO 10 MPH.
SUNDAY AND SUNDAY NIGHT
MOSTLY CLOUDY WITH SHOWERS LIKELY.
LOWS IN THE UPPER 50S. HIGHS IN THE UPPER 70S. SOUTHWEST WINDS
AROUND 5 MPH.
MONDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 70S. WEST WINDS 5 TO
10 MPH.
MONDAY NIGHT THROUGH WEDNESDAY
MOSTLY CLEAR. LOWS IN THE MID
50S. HIGHS IN THE UPPER 70S. SOUTHWEST WINDS 5 TO 10 MPH.
MAZ026-202000-
NORTHERN MIDDLESEX MA-
INCLUDING THE CITY OF AYER
407 AM EDT THU AUG 20 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY PCLDY
PRECIP TYPE NONE SHOWERS NONE
CHANCE PRECIP (%) 20 60 20
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 85 (+1) 55 (-8) 81
RH % (24H TREND) 49 (+9) 93 (-7) 54
20FT WND AM(MPH) LGT/VAR LGT/VAR
20FT WND PM(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.07 0.00
PRECIP DURATION 2
PRECIP BEGIN 6 PM
PRECIP END 3 AM
MIXING HGT (FT-AGL) 6050 420 5760
TRANSPORT WND (KTS) W 8 N 6 NE 9
VENT RATE (KT-FT) 48400 2520 51840
MAX ADI EARLY 42 GEN GOOD 15 GEN POOR 57 GEN GOOD
MAX ADI LATE 61 GOOD 4 VERY POOR 66 GOOD
MAX LVORI EARLY 2 6 2
MAX LVORI LATE 2 6 2
MIN VSBY EARLY 9 9 8
MIN VSBY LATE 9 9 9
SUNSHINE HOURS N/A N/A N/A
CWR 0 20 0
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE MID 50S. NORTHEAST WINDS AROUND 5 MPH.
SATURDAY AND SATURDAY NIGHT
SHOWERS. LOWS IN THE UPPER 50S.
HIGHS IN THE LOWER 70S. NORTHEAST WINDS AROUND 5 MPH.
SUNDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY. HIGHS AROUND 80.
SOUTH WINDS AROUND 5 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE UPPER 50S. SOUTHWEST WINDS AROUND 5 MPH.
MONDAY THROUGH WEDNESDAY
MOSTLY CLEAR. LOWS IN THE MID 50S.
HIGHS AROUND 80. SOUTHWEST WINDS AROUND 5 MPH.
MAZ002-202000-
WESTERN FRANKLIN MA-
INCLUDING THE CITY OF CHARLEMONT
407 AM EDT THU AUG 20 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS NONE
CHANCE PRECIP (%) 30 50 10
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 79 (0) 50 (-10) 79
RH % (24H TREND) 56 (+12) 100 (+3) 49
20FT WND AM(MPH) LGT/VAR LGT/VAR
20FT WND PM(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.03 0.06 0.00
PRECIP DURATION 0 1
PRECIP BEGIN 4 PM CONTINUING
PRECIP END CONTINUING 12 AM
MIXING HGT (FT-AGL) 4660 420 6300
TRANSPORT WND (KTS) W 7 NW 5 E 6
VENT RATE (KT-FT) 32620 2100 37800
MAX ADI EARLY 34 FAIR 6 VERY POOR 51 GEN GOOD
MAX ADI LATE 46 GEN GOOD 5 VERY POOR 58 GEN GOOD
MAX LVORI EARLY 3 6 1
MAX LVORI LATE 3 6 1
MIN VSBY EARLY 4 FOG 9 7
MIN VSBY LATE 9 6 FOG 9
SUNSHINE HOURS N/A N/A N/A
CWR 20 20 0
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE MID 50S. NORTHEAST WINDS AROUND 5 MPH.
SATURDAY AND SATURDAY NIGHT
MOSTLY CLOUDY WITH SHOWERS LIKELY.
LOWS IN THE MID 50S. HIGHS AROUND 70. NORTHEAST WINDS AROUND
5 MPH.
SUNDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY AND A CHANCE OF
THUNDERSTORMS. HIGHS IN THE UPPER 70S. SOUTH WINDS AROUND 5 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH SHOWERS LIKELY AND A CHANCE OF
THUNDERSTORMS. LOWS IN THE MID 50S. SOUTHWEST WINDS AROUND 5 MPH.
MONDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S. WEST WINDS AROUND
5 MPH.
MONDAY NIGHT THROUGH TUESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE
LOWER 50S. HIGHS IN THE MID 70S. WEST WINDS AROUND 5 MPH.
WEDNESDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 70S. SOUTHWEST
WINDS AROUND 5 MPH.
MAZ003-202000-
EASTERN FRANKLIN MA-
INCLUDING THE CITIES OF GREENFIELD AND ORANGE
407 AM EDT THU AUG 20 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS NONE
CHANCE PRECIP (%) 30 60 10
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 83 (0) 52 (-10) 82
RH % (24H TREND) 52 (+14) 100 (0) 47
20FT WND AM(MPH) LGT/VAR LGT/VAR
20FT WND PM(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.04 0.08 0.00
PRECIP DURATION 0 2
PRECIP BEGIN 4 PM CONTINUING
PRECIP END CONTINUING 1 AM
MIXING HGT (FT-AGL) 4680 400 6740
TRANSPORT WND (KTS) W 6 NW 3 E 6
VENT RATE (KT-FT) 28080 1200 40440
MAX ADI EARLY 26 FAIR 8 POOR 50 GEN GOOD
MAX ADI LATE 42 GEN GOOD 4 VERY POOR 60 GEN GOOD
MAX LVORI EARLY 2 8 1
MAX LVORI LATE 2 8 1
MIN VSBY EARLY 5 FOG 9 7
MIN VSBY LATE 9 6 FOG 9
SUNSHINE HOURS N/A N/A N/A
CWR 20 30 0
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE UPPER 50S. NORTHEAST WINDS AROUND 5 MPH.
SATURDAY AND SATURDAY NIGHT
MOSTLY CLOUDY WITH SHOWERS LIKELY.
LOWS IN THE UPPER 50S. HIGHS IN THE LOWER 70S. NORTHEAST WINDS
AROUND 5 MPH.
SUNDAY AND SUNDAY NIGHT
MOSTLY CLOUDY WITH SHOWERS LIKELY AND
A CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER 50S. HIGHS AROUND
80. SOUTHWEST WINDS AROUND 5 MPH.
MONDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 70S. WEST WINDS 5 TO
10 MPH.
MONDAY NIGHT THROUGH TUESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE
MID 50S. HIGHS IN THE UPPER 70S. SOUTHWEST WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY SUNNY. HIGHS AROUND 80. SOUTHWEST WINDS
AROUND 5 MPH.
MAZ008-202000-
WESTERN HAMPSHIRE MA-
INCLUDING THE CITY OF CHESTERFIELD
407 AM EDT THU AUG 20 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS NONE
CHANCE PRECIP (%) 30 60 10
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 79 (-1) 52 (-8) 78
RH % (24H TREND) 58 (+13) 100 (+7) 52
20FT WND AM(MPH) LGT/VAR LGT/VAR
20FT WND PM(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.04 0.10 0.00
PRECIP DURATION 0 2
PRECIP BEGIN 4 PM CONTINUING
PRECIP END CONTINUING 1 AM
MIXING HGT (FT-AGL) 4640 420 5800
TRANSPORT WND (KTS) W 7 NW 5 E 6
VENT RATE (KT-FT) 32480 2100 34800
MAX ADI EARLY 34 FAIR 7 POOR 49 GEN GOOD
MAX ADI LATE 46 GEN GOOD 5 VERY POOR 58 GEN GOOD
MAX LVORI EARLY 3 6 1
MAX LVORI LATE 3 6 1
MIN VSBY EARLY 7 9 8
MIN VSBY LATE 9 8 9
SUNSHINE HOURS N/A N/A N/A
CWR 30 30 0
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE MID 50S. NORTHEAST WINDS AROUND 5 MPH.
SATURDAY AND SATURDAY NIGHT
MOSTLY CLOUDY WITH SHOWERS LIKELY.
LOWS IN THE UPPER 50S. HIGHS AROUND 70. NORTHEAST WINDS AROUND
5 MPH.
SUNDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY AND A CHANCE OF
THUNDERSTORMS. HIGHS IN THE UPPER 70S. SOUTH WINDS AROUND 5 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH SHOWERS LIKELY AND A CHANCE OF
THUNDERSTORMS. LOWS IN THE MID 50S. SOUTHWEST WINDS AROUND 5 MPH.
MONDAY THROUGH TUESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID
50S. HIGHS IN THE MID 70S. WEST WINDS AROUND 5 MPH.
WEDNESDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 70S. SOUTHWEST
WINDS AROUND 5 MPH.
MAZ010-202000-
EASTERN HAMPSHIRE MA-
INCLUDING THE CITIES OF AMHERST AND NORTHAMPTON
407 AM EDT THU AUG 20 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS NONE
CHANCE PRECIP (%) 30 60 10
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 84 (0) 52 (-11) 82
RH % (24H TREND) 54 (+18) 100 (0) 51
20FT WND AM(MPH) LGT/VAR LGT/VAR
20FT WND PM(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.04 0.15 0.00
PRECIP DURATION 0 3
PRECIP BEGIN 4 PM CONTINUING
PRECIP END CONTINUING 5 AM
MIXING HGT (FT-AGL) 4620 410 6070
TRANSPORT WND (KTS) W 6 N 4 E 6
VENT RATE (KT-FT) 27720 1640 36420
MAX ADI EARLY 23 FAIR 9 POOR 43 GEN GOOD
MAX ADI LATE 37 FAIR 5 VERY POOR 57 GEN GOOD
MAX LVORI EARLY 3 9 2
MAX LVORI LATE 3 9 2
MIN VSBY EARLY 8 9 8
MIN VSBY LATE 9 8 9
SUNSHINE HOURS N/A N/A N/A
CWR 30 40 0
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE UPPER 50S. NORTHEAST WINDS AROUND 5 MPH.
SATURDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY. HIGHS IN THE MID
70S. NORTHEAST WINDS AROUND 5 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY WITH SHOWERS LIKELY. LOWS AROUND
60. NORTHEAST WINDS AROUND 5 MPH.
SUNDAY AND SUNDAY NIGHT
MOSTLY CLOUDY WITH SHOWERS LIKELY AND
A CHANCE OF THUNDERSTORMS. LOWS IN THE UPPER 50S. HIGHS IN THE
LOWER 80S. SOUTHWEST WINDS AROUND 5 MPH.
MONDAY THROUGH TUESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID
50S. HIGHS AROUND 80. SOUTHWEST WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHWEST
WINDS AROUND 5 MPH.
MAZ009-202000-
WESTERN HAMPDEN MA-
INCLUDING THE CITY OF BLANDFORD
407 AM EDT THU AUG 20 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY PCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS NONE
CHANCE PRECIP (%) 40 70 10
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 81 (0) 53 (-8) 78
RH % (24H TREND) 60 (+14) 100 (+3) 56
20FT WND AM(MPH) LGT/VAR LGT/VAR
20FT WND PM(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.06 0.18 0.00
PRECIP DURATION 1 3
PRECIP BEGIN 3 PM CONTINUING
PRECIP END CONTINUING 6 AM
MIXING HGT (FT-AGL) 4540 380 5500
TRANSPORT WND (KTS) W 7 N 5 E 6
VENT RATE (KT-FT) 31780 1900 33000
MAX ADI EARLY 37 FAIR 10 POOR 50 GEN GOOD
MAX ADI LATE 45 GEN GOOD 6 VERY POOR 59 GEN GOOD
MAX LVORI EARLY 3 6 1
MAX LVORI LATE 3 6 1
MIN VSBY EARLY 8 7 8
MIN VSBY LATE 9 8 9
SUNSHINE HOURS N/A N/A N/A
CWR 40 50 0
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE UPPER 50S. NORTHEAST WINDS AROUND 5 MPH.
SATURDAY
SHOWERS. HIGHS IN THE LOWER 70S. NORTHEAST WINDS
AROUND 5 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY WITH SHOWERS LIKELY. LOWS IN THE
UPPER 50S. NORTHEAST WINDS AROUND 5 MPH.
SUNDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY AND A CHANCE OF
THUNDERSTORMS. HIGHS IN THE UPPER 70S. SOUTH WINDS AROUND 5 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH SHOWERS LIKELY AND A CHANCE OF
THUNDERSTORMS. LOWS IN THE UPPER 50S. SOUTHWEST WINDS AROUND
5 MPH.
MONDAY THROUGH TUESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID
50S. HIGHS IN THE UPPER 70S. WEST WINDS AROUND 5 MPH.
WEDNESDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 70S. SOUTHWEST
WINDS AROUND 5 MPH.
MAZ011-202000-
EASTERN HAMPDEN MA-
INCLUDING THE CITY OF SPRINGFIELD
407 AM EDT THU AUG 20 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS NONE
CHANCE PRECIP (%) 30 60 10
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 83 (-1) 53 (-11) 82
RH % (24H TREND) 53 (+18) 100 (0) 49
20FT WND AM(MPH) LGT/VAR LGT/VAR
20FT WND PM(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.05 0.20 0.00
PRECIP DURATION 0 4
PRECIP BEGIN 4 PM CONTINUING
PRECIP END CONTINUING 6 AM
MIXING HGT (FT-AGL) 4700 420 6170
TRANSPORT WND (KTS) W 6 N 7 NE 6
VENT RATE (KT-FT) 28200 2940 37020
MAX ADI EARLY 24 FAIR 11 POOR 35 FAIR
MAX ADI LATE 41 GEN GOOD 5 VERY POOR 56 GEN GOOD
MAX LVORI EARLY 3 9 2
MAX LVORI LATE 3 9 2
MIN VSBY EARLY 8 8 8
MIN VSBY LATE 9 8 9
SUNSHINE HOURS N/A N/A N/A
CWR 30 40 0
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE UPPER 50S. NORTHEAST WINDS AROUND 5 MPH.
SATURDAY AND SATURDAY NIGHT
SHOWERS. LOWS AROUND 60. HIGHS IN
THE MID 70S. NORTHEAST WINDS AROUND 5 MPH.
SUNDAY AND SUNDAY NIGHT
MOSTLY CLOUDY WITH SHOWERS LIKELY AND
A CHANCE OF THUNDERSTORMS. LOWS AROUND 60. HIGHS IN THE LOWER
80S. SOUTHWEST WINDS AROUND 5 MPH.
MONDAY THROUGH WEDNESDAY
MOSTLY CLEAR. LOWS 54 TO 59. HIGHS
AROUND 80. SOUTHWEST WINDS 5 TO 10 MPH.
CTZ002-202000-
HARTFORD CT-
INCLUDING THE CITIES OF HARTFORD AND WINDSOR LOCKS
407 AM EDT THU AUG 20 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 70 20
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 84 (-1) 57 (-8) 81
RH % (24H TREND) 53 (+16) 100 (0) 53
20FT WND AM(MPH) LGT/VAR LGT/VAR
20FT WND PM(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.06 0.36 0.01
PRECIP DURATION 1 6 1
PRECIP BEGIN 3 PM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING 6 PM
MIXING HGT (FT-AGL) 4690 430 5810
TRANSPORT WND (KTS) W 6 N 8 NE 6
VENT RATE (KT-FT) 28140 3440 34860
MAX ADI EARLY 21 FAIR 13 GEN POOR 38 FAIR
MAX ADI LATE 41 GEN GOOD 6 VERY POOR 56 GEN GOOD
MAX LVORI EARLY 3 8 2
MAX LVORI LATE 3 8 2
MIN VSBY EARLY 9 7 8
MIN VSBY LATE 9 8 9
SUNSHINE HOURS N/A N/A N/A
CWR 40 50 10
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS
AROUND 60. NORTHEAST WINDS AROUND 5 MPH.
SATURDAY AND SATURDAY NIGHT
SHOWERS. LOWS IN THE LOWER 60S.
HIGHS IN THE MID 70S. NORTHEAST WINDS AROUND 5 MPH.
SUNDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY AND A CHANCE OF
THUNDERSTORMS. HIGHS IN THE LOWER 80S. EAST WINDS AROUND 5 MPH,
BECOMING SOUTH AROUND 5 MPH IN THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS AROUND 60. SOUTHWEST WINDS AROUND 5 MPH.
MONDAY THROUGH WEDNESDAY
MOSTLY CLEAR. LOWS 55 TO 60. HIGHS
AROUND 80. SOUTHWEST WINDS 5 TO 10 MPH.
CTZ003-202000-
TOLLAND CT-
INCLUDING THE CITIES OF UNION AND VERNON
407 AM EDT THU AUG 20 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY PCLDY
PRECIP TYPE SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 70 20
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 84 (0) 56 (-9) 80
RH % (24H TREND) 55 (+15) 100 (0) 54
20FT WND AM(MPH) LGT/VAR LGT/VAR
20FT WND PM(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.04 0.32 0.02
PRECIP DURATION 0 7 1
PRECIP BEGIN 4 PM CONTINUING CONTINUING
PRECIP END CONTINUING CONTINUING CONTINUING
MIXING HGT (FT-AGL) 4470 420 5940
TRANSPORT WND (KTS) W 7 N 6 E 6
VENT RATE (KT-FT) 31290 2520 35640
MAX ADI EARLY 26 FAIR 13 GEN POOR 46 GEN GOOD
MAX ADI LATE 43 GEN GOOD 5 VERY POOR 58 GEN GOOD
MAX LVORI EARLY 3 9 3
MAX LVORI LATE 3 9 3
MIN VSBY EARLY 9 8 8
MIN VSBY LATE 9 7 9
SUNSHINE HOURS N/A N/A N/A
CWR 30 50 10
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE UPPER 50S. NORTHEAST WINDS AROUND 5 MPH.
SATURDAY AND SATURDAY NIGHT
SHOWERS. LOWS AROUND 60. HIGHS IN
THE MID 70S. NORTHEAST WINDS AROUND 5 MPH.
SUNDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY AND A CHANCE OF
THUNDERSTORMS. HIGHS IN THE LOWER 80S. SOUTH WINDS AROUND 5 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE UPPER 50S. SOUTHWEST WINDS AROUND
5 MPH.
MONDAY THROUGH WEDNESDAY
MOSTLY CLEAR. LOWS IN THE UPPER 50S.
HIGHS IN THE UPPER 70S. SOUTHWEST WINDS 5 TO 10 MPH.
CTZ004-202000-
WINDHAM CT-
INCLUDING THE CITIES OF PUTNAM AND WILLIMANTIC
407 AM EDT THU AUG 20 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY PCLDY
PRECIP TYPE NONE SHOWERS SHOWERS
CHANCE PRECIP (%) 20 70 30
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 85 (+1) 57 (-8) 79
RH % (24H TREND) 53 (+13) 100 (0) 62
20FT WND AM(MPH) LGT/VAR LGT/VAR
20FT WND PM(MPH) LGT/VAR LGT/VAR LGT/VAR
PRECIP AMOUNT 0.00 0.40 0.06
PRECIP DURATION 7 1
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING CONTINUING
MIXING HGT (FT-AGL) 5070 440 5600
TRANSPORT WND (KTS) W 7 N 8 E 7
VENT RATE (KT-FT) 35490 3520 39200
MAX ADI EARLY 33 FAIR 12 POOR 48 GEN GOOD
MAX ADI LATE 49 GEN GOOD 5 VERY POOR 60 GEN GOOD
MAX LVORI EARLY 3 8 3
MAX LVORI LATE 3 8 3
MIN VSBY EARLY 9 8 7
MIN VSBY LATE 9 6 FOG 8
SUNSHINE HOURS N/A N/A N/A
CWR 0 50 20
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS
AROUND 60. NORTHEAST WINDS AROUND 5 MPH.
SATURDAY
SHOWERS. HIGHS IN THE MID 70S. NORTHEAST WINDS AROUND
5 MPH.
SATURDAY NIGHT
SHOWERS. LOWS IN THE LOWER 60S. NORTHEAST WINDS
AROUND 5 MPH.
SUNDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY. HIGHS IN THE LOWER
80S. SOUTHEAST WINDS AROUND 5 MPH, BECOMING SOUTH AROUND 5 MPH IN
THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS
AROUND 60. SOUTHWEST WINDS AROUND 5 MPH.
MONDAY
MOSTLY SUNNY. HIGHS AROUND 80. WEST WINDS AROUND 5 MPH.
MONDAY NIGHT THROUGH WEDNESDAY
MOSTLY CLEAR. LOWS IN THE MID
50S. HIGHS AROUND 80. SOUTHWEST WINDS AROUND 5 MPH.
RIZ001-202000-
NORTHWEST PROVIDENCE RI-
INCLUDING THE CITIES OF FOSTER AND SMITHFIELD
407 AM EDT THU AUG 20 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE NONE SHOWERS SHOWERS
CHANCE PRECIP (%) 20 70 30
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 85 (+1) 59 (-7) 78
RH % (24H TREND) 51 (+10) 97 (-3) 64
20FT WND AM(MPH) LGT/VAR LGT/VAR
20FT WND PM(MPH) LGT/VAR LGT/VAR NE 5
PRECIP AMOUNT 0.00 0.42 0.09
PRECIP DURATION 6 2
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING CONTINUING
MIXING HGT (FT-AGL) 5650 450 5900
TRANSPORT WND (KTS) W 7 NE 7 E 8
VENT RATE (KT-FT) 39550 3150 47200
MAX ADI EARLY 38 FAIR 14 GEN POOR 31 FAIR
MAX ADI LATE 61 GOOD 5 VERY POOR 35 FAIR
MAX LVORI EARLY 2 6 3
MAX LVORI LATE 2 6 3
MIN VSBY EARLY 9 8 7
MIN VSBY LATE 9 6 FOG 8
SUNSHINE HOURS N/A N/A N/A
CWR 0 50 20
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
FRIDAY NIGHT
MOSTLY CLOUDY WITH SHOWERS LIKELY. LOWS AROUND
60. NORTHEAST WINDS AROUND 5 MPH.
SATURDAY
SHOWERS. PATCHY FOG. HIGHS IN THE LOWER 70S.
NORTHEAST WINDS AROUND 5 MPH.
SATURDAY NIGHT
SHOWERS. LOWS IN THE LOWER 60S. NORTHEAST WINDS
AROUND 5 MPH.
SUNDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. HIGHS IN THE
LOWER 80S. SOUTHEAST WINDS AROUND 5 MPH, BECOMING SOUTH AROUND
5 MPH IN THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE LOWER 60S. SOUTHWEST WINDS AROUND 5 MPH.
MONDAY
MOSTLY SUNNY. HIGHS AROUND 80. WEST WINDS AROUND 5 MPH.
MONDAY NIGHT THROUGH WEDNESDAY
MOSTLY CLEAR. LOWS IN THE UPPER
50S. HIGHS AROUND 80. SOUTHWEST WINDS AROUND 5 MPH.
RIZ002-202000-
SOUTHEAST PROVIDENCE RI-
INCLUDING THE CITY OF PROVIDENCE
407 AM EDT THU AUG 20 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE NONE SHOWERS SHOWERS
CHANCE PRECIP (%) 20 70 40
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 86 (+1) 61 (-6) 79
RH % (24H TREND) 53 (+12) 93 (-7) 67
20FT WND AM(MPH) LGT/VAR LGT/VAR
20FT WND PM(MPH) LGT/VAR LGT/VAR NE 5
PRECIP AMOUNT 0.00 0.45 0.17
PRECIP DURATION 6 2
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING CONTINUING
MIXING HGT (FT-AGL) 5750 450 5740
TRANSPORT WND (KTS) W 7 NE 7 NE 8
VENT RATE (KT-FT) 40250 3150 45920
MAX ADI EARLY 31 FAIR 14 GEN POOR 31 FAIR
MAX ADI LATE 60 GEN GOOD 5 VERY POOR 35 FAIR
MAX LVORI EARLY 2 6 3
MAX LVORI LATE 2 6 3
MIN VSBY EARLY 9 8 6 FOG
MIN VSBY LATE 9 6 FOG 8
SUNSHINE HOURS N/A N/A N/A
CWR 0 50 30
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
FRIDAY NIGHT
MOSTLY CLOUDY WITH SHOWERS LIKELY. PATCHY FOG.
LOWS IN THE LOWER 60S. NORTHEAST WINDS AROUND 5 MPH.
SATURDAY
SHOWERS. PATCHY FOG. HIGHS IN THE MID 70S. NORTHEAST
WINDS AROUND 5 MPH.
SATURDAY NIGHT
SHOWERS. LOWS IN THE MID 60S. NORTHEAST WINDS
AROUND 5 MPH.
SUNDAY
PARTLY SUNNY WITH A CHANCE OF SHOWERS. HIGHS IN THE
LOWER 80S. SOUTHEAST WINDS AROUND 5 MPH, BECOMING SOUTH AROUND
5 MPH IN THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE LOWER 60S. SOUTHWEST WINDS AROUND 5 MPH.
MONDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. WEST WINDS 5 TO
10 MPH.
MONDAY NIGHT THROUGH WEDNESDAY
MOSTLY CLEAR. LOWS IN THE UPPER
50S. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS AROUND 5 MPH.
RIZ003-202000-
WESTERN KENT RI-
INCLUDING THE CITIES OF COVENTRY AND WEST GREENWICH
407 AM EDT THU AUG 20 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE NONE SHOWERS SHOWERS
CHANCE PRECIP (%) 20 70 40
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 84 (0) 60 (-7) 77
RH % (24H TREND) 55 (+9) 93 (-7) 69
20FT WND AM(MPH) LGT/VAR NE 5
20FT WND PM(MPH) LGT/VAR LGT/VAR NE 5
PRECIP AMOUNT 0.00 0.59 0.15
PRECIP DURATION 7 2
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING CONTINUING
MIXING HGT (FT-AGL) 5160 450 5390
TRANSPORT WND (KTS) W 7 NE 8 NE 8
VENT RATE (KT-FT) 36120 3600 43120
MAX ADI EARLY 29 FAIR 11 POOR 30 FAIR
MAX ADI LATE 50 GEN GOOD 6 VERY POOR 33 FAIR
MAX LVORI EARLY 3 6 3
MAX LVORI LATE 3 6 3
MIN VSBY EARLY 9 7 5 FOG
MIN VSBY LATE 9 5 FOG 8
SUNSHINE HOURS N/A N/A N/A
CWR 0 60 30
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
FRIDAY NIGHT
MOSTLY CLOUDY WITH SHOWERS LIKELY. PATCHY FOG.
LOWS IN THE LOWER 60S. NORTHEAST WINDS AROUND 5 MPH.
SATURDAY
SHOWERS. PATCHY FOG. HIGHS IN THE MID 70S. NORTHEAST
WINDS AROUND 5 MPH.
SATURDAY NIGHT
SHOWERS. LOWS IN THE LOWER 60S. NORTHEAST WINDS
AROUND 5 MPH.
SUNDAY
PARTLY SUNNY WITH A CHANCE OF SHOWERS. HIGHS AROUND 80.
SOUTHEAST WINDS AROUND 5 MPH, BECOMING SOUTH AROUND 5 MPH IN THE
AFTERNOON.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE LOWER 60S. SOUTHWEST WINDS AROUND 5 MPH.
MONDAY THROUGH WEDNESDAY
MOSTLY CLEAR. LOWS 57 TO 62. HIGHS IN
THE UPPER 70S. SOUTHWEST WINDS AROUND 5 MPH.
RIZ004-202000-
EASTERN KENT RI-
INCLUDING THE CITIES OF EAST GREENWICH, WARWICK, AND WEST WARWICK
407 AM EDT THU AUG 20 2026
TODAY TONIGHT FRI
CLOUD COVER MCLEAR MCLDY MCLDY
PRECIP TYPE NONE SHOWERS SHOWERS
CHANCE PRECIP (%) 10 70 40
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 85 (-1) 62 (-6) 78
RH % (24H TREND) 53 (+16) 90 (-10) 64
20FT WND AM(MPH) LGT/VAR NE 5
20FT WND PM(MPH) LGT/VAR LGT/VAR NE 5
PRECIP AMOUNT 0.00 0.55 0.21
PRECIP DURATION 7 2
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING CONTINUING
MIXING HGT (FT-AGL) 5260 450 5490
TRANSPORT WND (KTS) W 6 NE 7 NE 8
VENT RATE (KT-FT) 31560 3150 43920
MAX ADI EARLY 25 FAIR 11 POOR 30 FAIR
MAX ADI LATE 46 GEN GOOD 6 VERY POOR 32 FAIR
MAX LVORI EARLY 2 6 3
MAX LVORI LATE 2 6 3
MIN VSBY EARLY 9 8 5 FOG
MIN VSBY LATE 9 6 FOG 8
SUNSHINE HOURS N/A N/A N/A
CWR 0 50 30
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
FRIDAY NIGHT
MOSTLY CLOUDY WITH SHOWERS LIKELY. PATCHY FOG.
LOWS IN THE LOWER 60S. NORTHEAST WINDS 5 TO 10 MPH.
SATURDAY
SHOWERS. PATCHY FOG. HIGHS IN THE MID 70S. NORTHEAST
WINDS 5 TO 10 MPH.
SATURDAY NIGHT
SHOWERS. LOWS IN THE MID 60S. NORTHEAST WINDS
AROUND 5 MPH.
SUNDAY
PARTLY SUNNY WITH A CHANCE OF SHOWERS. HIGHS AROUND 80.
SOUTHEAST WINDS AROUND 5 MPH, BECOMING SOUTH IN THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE MID 60S. SOUTHWEST WINDS 5 TO 10 MPH.
MONDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. WEST WINDS 5 TO
10 MPH.
MONDAY NIGHT THROUGH WEDNESDAY
MOSTLY CLEAR. LOWS IN THE UPPER
50S. HIGHS AROUND 80. SOUTHWEST WINDS 5 TO 10 MPH.
RIZ005-202000-
BRISTOL RI-
INCLUDING THE CITY OF BRISTOL
407 AM EDT THU AUG 20 2026
TODAY TONIGHT FRI
CLOUD COVER MCLEAR MCLDY MCLDY
PRECIP TYPE NONE SHOWERS SHOWERS
CHANCE PRECIP (%) 10 70 40
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 85 (+3) 63 (-6) 78
RH % (24H TREND) 57 (+6) 90 (-10) 69
20FT WND AM(MPH) LGT/VAR NE 5
20FT WND PM(MPH) SW 5 LGT/VAR NE 6
PRECIP AMOUNT 0.00 0.49 0.20
PRECIP DURATION 6 2
PRECIP BEGIN 8 PM CONTINUING
PRECIP END CONTINUING CONTINUING
MIXING HGT (FT-AGL) 4960 430 5830
TRANSPORT WND (KTS) SW 7 NE 7 NE 8
VENT RATE (KT-FT) 34720 3010 46640
MAX ADI EARLY 17 GEN POOR 10 POOR 35 FAIR
MAX ADI LATE 44 GEN GOOD 6 VERY POOR 33 FAIR
MAX LVORI EARLY 3 6 3
MAX LVORI LATE 3 6 3
MIN VSBY EARLY 9 8 5 FOG
MIN VSBY LATE 9 6 FOG 7
SUNSHINE HOURS N/A N/A N/A
CWR 0 50 30
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
FRIDAY NIGHT
MOSTLY CLOUDY WITH SHOWERS LIKELY. PATCHY FOG.
LOWS IN THE MID 60S. NORTHEAST WINDS AROUND 5 MPH.
SATURDAY
SHOWERS. PATCHY FOG. HIGHS IN THE MID 70S. NORTHEAST
WINDS AROUND 5 MPH.
SATURDAY NIGHT
SHOWERS. LOWS IN THE MID 60S. NORTHEAST WINDS
AROUND 5 MPH.
SUNDAY
PARTLY SUNNY WITH A CHANCE OF SHOWERS. HIGHS AROUND 80.
SOUTHEAST WINDS AROUND 5 MPH, BECOMING SOUTH IN THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 60S. SOUTHWEST
WINDS 5 TO 10 MPH.
MONDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. WEST WINDS 5 TO
10 MPH.
MONDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 60S. WEST WINDS
5 TO 10 MPH.
TUESDAY
SUNNY. HIGHS IN THE UPPER 70S. WEST WINDS 5 TO 10 MPH.
TUESDAY NIGHT AND WEDNESDAY
MOSTLY CLEAR. LOWS IN THE LOWER
60S. HIGHS AROUND 80. SOUTHWEST WINDS 5 TO 10 MPH.
RIZ006-202000-
WASHINGTON RI-
INCLUDING THE CITIES OF NARRAGANSETT AND WESTERLY
407 AM EDT THU AUG 20 2026
TODAY TONIGHT FRI
CLOUD COVER MCLEAR MCLDY MCLDY
PRECIP TYPE NONE SHOWERS SHOWERS
CHANCE PRECIP (%) 10 70 40
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 84 (0) 60 (-8) 77
RH % (24H TREND) 57 (+10) 97 (-3) 67
20FT WND AM(MPH) LGT/VAR NE 6
20FT WND PM(MPH) SW 5 LGT/VAR NE 6
PRECIP AMOUNT 0.00 0.74 0.26
PRECIP DURATION 6 2
PRECIP BEGIN 8 PM CONTINUING
PRECIP END CONTINUING CONTINUING
MIXING HGT (FT-AGL) 4490 440 4590
TRANSPORT WND (KTS) SW 6 NE 9 NE 8
VENT RATE (KT-FT) 26940 3960 36720
MAX ADI EARLY 16 GEN POOR 9 POOR 30 FAIR
MAX ADI LATE 29 FAIR 7 POOR 32 FAIR
MAX LVORI EARLY 3 7 3
MAX LVORI LATE 3 7 3
MIN VSBY EARLY 8 7 5 FOG
MIN VSBY LATE 9 5 FOG 7
SUNSHINE HOURS N/A N/A N/A
CWR 0 60 30
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
FRIDAY NIGHT
MOSTLY CLOUDY WITH SHOWERS LIKELY. PATCHY FOG.
LOWS IN THE LOWER 60S. NORTHEAST WINDS 5 TO 10 MPH.
SATURDAY
SHOWERS. PATCHY FOG. HIGHS IN THE MID 70S. NORTHEAST
WINDS 5 TO 10 MPH.
SATURDAY NIGHT
SHOWERS. LOWS IN THE MID 60S. NORTHEAST WINDS
AROUND 5 MPH.
SUNDAY
PARTLY SUNNY WITH A CHANCE OF SHOWERS. HIGHS IN THE
UPPER 70S. SOUTHEAST WINDS AROUND 5 MPH, BECOMING SOUTH IN THE
AFTERNOON.
SUNDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 60S. SOUTHWEST
WINDS 5 TO 10 MPH.
MONDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 70S. WEST WINDS 5 TO
10 MPH.
MONDAY NIGHT THROUGH WEDNESDAY
MOSTLY CLEAR. LOWS IN THE UPPER
50S. HIGHS IN THE UPPER 70S. SOUTHWEST WINDS 5 TO 10 MPH.
RIZ007-202000-
NEWPORT RI-
INCLUDING THE CITY OF NEWPORT
407 AM EDT THU AUG 20 2026
TODAY TONIGHT FRI
CLOUD COVER MCLEAR MCLDY MCLDY
PRECIP TYPE NONE SHOWERS SHOWERS
CHANCE PRECIP (%) 10 70 50
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 85 (+4) 63 (-6) 78
RH % (24H TREND) 53 (-8) 93 (-7) 67
20FT WND AM(MPH) LGT/VAR NE 7
20FT WND PM(MPH) SW 6 LGT/VAR NE 7
PRECIP AMOUNT 0.00 0.62 0.31
PRECIP DURATION 6 2
PRECIP BEGIN 8 PM CONTINUING
PRECIP END CONTINUING CONTINUING
MIXING HGT (FT-AGL) 2840 410 4320
TRANSPORT WND (KTS) SW 6 SW 8 E 8
VENT RATE (KT-FT) 17040 3280 34560
MAX ADI EARLY 7 POOR 9 POOR 28 FAIR
MAX ADI LATE 11 POOR 8 POOR 27 FAIR
MAX LVORI EARLY 3 5 3
MAX LVORI LATE 3 5 3
MIN VSBY EARLY 8 7 5 FOG
MIN VSBY LATE 9 6 FOG 7
SUNSHINE HOURS N/A N/A N/A
CWR 0 50 40
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
FRIDAY NIGHT
MOSTLY CLOUDY WITH SHOWERS LIKELY. PATCHY FOG.
LOWS IN THE MID 60S. NORTHEAST WINDS 5 TO 10 MPH.
SATURDAY
SHOWERS. PATCHY FOG. HIGHS IN THE MID 70S. NORTHEAST
WINDS 5 TO 10 MPH.
SATURDAY NIGHT
SHOWERS. LOWS IN THE UPPER 60S. NORTHEAST WINDS
5 TO 10 MPH.
SUNDAY
PARTLY SUNNY WITH A CHANCE OF SHOWERS. HIGHS IN THE
UPPER 70S. SOUTH WINDS 5 TO 10 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 60S. SOUTHWEST
WINDS 5 TO 10 MPH.
MONDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 70S. SOUTHWEST WINDS
10 TO 15 MPH.
MONDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 60S. WEST WINDS
5 TO 10 MPH.
TUESDAY
SUNNY. HIGHS IN THE UPPER 70S. WEST WINDS 10 TO
15 MPH.
TUESDAY NIGHT AND WEDNESDAY
MOSTLY CLEAR. LOWS IN THE MID 60S.
HIGHS IN THE UPPER 70S. SOUTHWEST WINDS 5 TO 10 MPH.
RIZ008-202000-
BLOCK ISLAND RI-
INCLUDING THE CITY OF NEW SHOREHAM
407 AM EDT THU AUG 20 2026
TODAY TONIGHT FRI
CLOUD COVER MCLEAR MCLDY MCLDY
PRECIP TYPE NONE SHOWERS SHOWERS
CHANCE PRECIP (%) 10 70 50
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 79 (-1) 63 (-7) 76
RH % (24H TREND) 76 (+18) 100 (0) 79
20FT WND AM(MPH) LGT/VAR NE 10
20FT WND PM(MPH) SW 5 LGT/VAR NE 9
PRECIP AMOUNT 0.00 0.47 0.22
PRECIP DURATION 6 2
PRECIP BEGIN 8 PM CONTINUING
PRECIP END CONTINUING CONTINUING
MIXING HGT (FT-AGL) 490 400 1340
TRANSPORT WND (KTS) NW 3 W 8 NE 15
VENT RATE (KT-FT) 1470 3200 20100
MAX ADI EARLY 8 POOR 10 POOR 23 FAIR
MAX ADI LATE 10 POOR 13 GEN POOR 1 VERY POOR
MAX LVORI EARLY 5 5 6
MAX LVORI LATE 5 5 6
MIN VSBY EARLY 8 7 6 FOG
MIN VSBY LATE 9 5 FOG 7
SUNSHINE HOURS N/A N/A N/A
CWR 0 60 40
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
FRIDAY NIGHT
CLOUDY WITH SHOWERS LIKELY. PATCHY FOG. LOWS IN
THE UPPER 60S. NORTHEAST WINDS 5 TO 10 MPH.
SATURDAY
SHOWERS. PATCHY FOG. HIGHS IN THE MID 70S. NORTHEAST
WINDS 5 TO 10 MPH.
SATURDAY NIGHT
SHOWERS. LOWS AROUND 70. EAST WINDS AROUND
5 MPH.
SUNDAY
PARTLY SUNNY WITH A CHANCE OF SHOWERS. HIGHS IN THE
UPPER 70S. SOUTHEAST WINDS AROUND 5 MPH, BECOMING SOUTHWEST IN
THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 70. SOUTHWEST WINDS
5 TO 10 MPH.
MONDAY AND MONDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S.
HIGHS IN THE UPPER 70S. WEST WINDS 5 TO 10 MPH.
TUESDAY
SUNNY. HIGHS IN THE MID 70S. WEST WINDS 5 TO 10 MPH.
TUESDAY NIGHT AND WEDNESDAY
MOSTLY CLEAR. LOWS IN THE UPPER
60S. HIGHS IN THE MID 70S. SOUTHWEST WINDS 5 TO 10 MPH.
MAZ017-202000-
NORTHERN BRISTOL MA-
INCLUDING THE CITY OF TAUNTON
407 AM EDT THU AUG 20 2026
TODAY TONIGHT FRI
CLOUD COVER PCLDY MCLDY MCLDY
PRECIP TYPE NONE SHOWERS SHOWERS
CHANCE PRECIP (%) 10 70 40
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 86 (+1) 60 (-6) 79
RH % (24H TREND) 51 (+14) 93 (-7) 64
20FT WND AM(MPH) LGT/VAR LGT/VAR
20FT WND PM(MPH) LGT/VAR LGT/VAR NE 5
PRECIP AMOUNT 0.00 0.36 0.18
PRECIP DURATION 6 2
PRECIP BEGIN 6 PM CONTINUING
PRECIP END CONTINUING CONTINUING
MIXING HGT (FT-AGL) 5930 420 5300
TRANSPORT WND (KTS) W 7 N 8 NE 9
VENT RATE (KT-FT) 41510 3360 47700
MAX ADI EARLY 31 FAIR 12 POOR 31 FAIR
MAX ADI LATE 62 GOOD 4 VERY POOR 34 FAIR
MAX LVORI EARLY 2 6 3
MAX LVORI LATE 2 6 3
MIN VSBY EARLY 9 8 7
MIN VSBY LATE 9 7 8
SUNSHINE HOURS N/A N/A N/A
CWR 0 50 30
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
FRIDAY NIGHT
MOSTLY CLOUDY WITH SHOWERS LIKELY. LOWS IN THE
LOWER 60S. NORTHEAST WINDS AROUND 5 MPH.
SATURDAY
SHOWERS. PATCHY FOG. HIGHS IN THE MID 70S. NORTHEAST
WINDS AROUND 5 MPH.
SATURDAY NIGHT
SHOWERS. LOWS IN THE LOWER 60S. NORTHEAST WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT AND VARIABLE.
SUNDAY AND SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF
SHOWERS. LOWS IN THE LOWER 60S. HIGHS IN THE LOWER 80S. SOUTHWEST
WINDS AROUND 5 MPH.
MONDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS
AROUND 5 MPH.
MONDAY NIGHT THROUGH WEDNESDAY
MOSTLY CLEAR. LOWS IN THE UPPER
50S. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS AROUND 5 MPH.
MAZ018-202000-
WESTERN PLYMOUTH MA-
INCLUDING THE CITY OF BROCKTON
407 AM EDT THU AUG 20 2026
TODAY TONIGHT FRI
CLOUD COVER MCLEAR MCLDY MCLDY
PRECIP TYPE NONE SHOWERS SHOWERS
CHANCE PRECIP (%) 10 60 40
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 86 (0) 60 (-6) 77
RH % (24H TREND) 48 (+3) 97 (-3) 66
20FT WND AM(MPH) LGT/VAR LGT/VAR
20FT WND PM(MPH) LGT/VAR LGT/VAR NE 5
PRECIP AMOUNT 0.00 0.32 0.18
PRECIP DURATION 5 2
PRECIP BEGIN 8 PM CONTINUING
PRECIP END CONTINUING CONTINUING
MIXING HGT (FT-AGL) 5890 420 4360
TRANSPORT WND (KTS) SW 7 NE 6 NE 10
VENT RATE (KT-FT) 41230 2520 43600
MAX ADI EARLY 29 FAIR 10 POOR 10 POOR
MAX ADI LATE 52 GEN GOOD 4 VERY POOR 31 FAIR
MAX LVORI EARLY 2 7 4
MAX LVORI LATE 2 7 4
MIN VSBY EARLY 8 9 7
MIN VSBY LATE 9 8 7
SUNSHINE HOURS N/A N/A N/A
CWR 0 50 30
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS
AROUND 60. NORTHEAST WINDS AROUND 5 MPH.
SATURDAY
SHOWERS. PATCHY FOG. HIGHS IN THE MID 70S. NORTHEAST
WINDS AROUND 5 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY WITH SHOWERS LIKELY. LOWS IN THE
LOWER 60S. NORTHEAST WINDS AROUND 5 MPH.
SUNDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. HIGHS IN THE
LOWER 80S. SOUTH WINDS AROUND 5 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 60S. SOUTHWEST
WINDS AROUND 5 MPH.
MONDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS
AROUND 5 MPH.
MONDAY NIGHT THROUGH WEDNESDAY
MOSTLY CLEAR. LOWS IN THE UPPER
50S. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS AROUND 5 MPH.
MAZ019-202000-
EASTERN PLYMOUTH MA-
INCLUDING THE CITY OF PLYMOUTH
407 AM EDT THU AUG 20 2026
TODAY TONIGHT FRI
CLOUD COVER MCLEAR MCLDY MCLDY
PRECIP TYPE NONE SHOWERS SHOWERS
CHANCE PRECIP (%) 10 60 40
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 85 (0) 62 (-5) 76
RH % (24H TREND) 48 (+9) 100 (0) 66
20FT WND AM(MPH) LGT/VAR NE 6
20FT WND PM(MPH) LGT/VAR LGT/VAR NE 6
PRECIP AMOUNT 0.00 0.27 0.17
PRECIP DURATION 5 2
PRECIP BEGIN 8 PM CONTINUING
PRECIP END CONTINUING CONTINUING
MIXING HGT (FT-AGL) 3310 400 2550
TRANSPORT WND (KTS) NW 5 E 6 NE 9
VENT RATE (KT-FT) 16550 2400 22950
MAX ADI EARLY 11 POOR 8 POOR 10 POOR
MAX ADI LATE 11 POOR 5 VERY POOR 22 FAIR
MAX LVORI EARLY 3 6 5
MAX LVORI LATE 3 6 5
MIN VSBY EARLY 8 9 7
MIN VSBY LATE 9 7 6 FOG
SUNSHINE HOURS N/A N/A N/A
CWR 0 40 30
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE LOWER 60S. NORTHEAST WINDS 5 TO 10 MPH.
SATURDAY
SHOWERS. PATCHY FOG. HIGHS IN THE MID 70S. NORTHEAST
WINDS 5 TO 10 MPH.
SATURDAY NIGHT
CLOUDY WITH SHOWERS LIKELY. LOWS IN THE MID
60S. EAST WINDS 5 TO 10 MPH, BECOMING NORTH AFTER MIDNIGHT.
SUNDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY. HIGHS AROUND 80.
SOUTHEAST WINDS AROUND 5 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 60S. SOUTHWEST
WINDS AROUND 5 MPH.
MONDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS
5 TO 10 MPH.
MONDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 60. WEST WINDS 5 TO
10 MPH.
TUESDAY
SUNNY. HIGHS IN THE UPPER 70S. WEST WINDS AROUND
5 MPH.
TUESDAY NIGHT AND WEDNESDAY
MOSTLY CLEAR. LOWS IN THE LOWER
60S. HIGHS AROUND 80. SOUTHWEST WINDS 5 TO 10 MPH.
MAZ020-202000-
SOUTHERN BRISTOL MA-
INCLUDING THE CITIES OF FALL RIVER AND NEW BEDFORD
407 AM EDT THU AUG 20 2026
TODAY TONIGHT FRI
CLOUD COVER MCLEAR MCLDY MCLDY
PRECIP TYPE NONE SHOWERS SHOWERS
CHANCE PRECIP (%) 10 70 40
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 87 (+5) 61 (-7) 79
RH % (24H TREND) 53 (+2) 93 (-7) 67
20FT WND AM(MPH) LGT/VAR NE 5
20FT WND PM(MPH) SW 5 LGT/VAR NE 6
PRECIP AMOUNT 0.00 0.50 0.28
PRECIP DURATION 6 2
PRECIP BEGIN 8 PM CONTINUING
PRECIP END CONTINUING CONTINUING
MIXING HGT (FT-AGL) 5510 420 5690
TRANSPORT WND (KTS) SW 7 NE 8 NE 9
VENT RATE (KT-FT) 38570 3360 51210
MAX ADI EARLY 21 FAIR 11 POOR 31 FAIR
MAX ADI LATE 43 GEN GOOD 5 VERY POOR 32 FAIR
MAX LVORI EARLY 3 6 3
MAX LVORI LATE 3 6 3
MIN VSBY EARLY 8 7 5 FOG
MIN VSBY LATE 9 6 FOG 7
SUNSHINE HOURS N/A N/A N/A
CWR 0 50 40
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
FRIDAY NIGHT
MOSTLY CLOUDY WITH SHOWERS LIKELY. PATCHY FOG.
LOWS IN THE LOWER 60S. NORTHEAST WINDS 5 TO 10 MPH.
SATURDAY
SHOWERS. PATCHY FOG. HIGHS IN THE MID 70S. NORTHEAST
WINDS 5 TO 10 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY WITH SHOWERS LIKELY. LOWS IN THE
MID 60S. EAST WINDS 5 TO 10 MPH.
SUNDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. HIGHS AROUND
80. SOUTH WINDS 5 TO 10 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 60S. SOUTHWEST
WINDS 5 TO 10 MPH.
MONDAY
MOSTLY SUNNY. HIGHS AROUND 80. SOUTHWEST WINDS 10 TO
15 MPH.
MONDAY NIGHT THROUGH WEDNESDAY
MOSTLY CLEAR. LOWS AROUND 60.
HIGHS IN THE UPPER 70S. SOUTHWEST WINDS 10 TO 15 MPH.
MAZ021-202000-
SOUTHERN PLYMOUTH MA-
INCLUDING THE CITY OF MATTAPOISETT
407 AM EDT THU AUG 20 2026
TODAY TONIGHT FRI
CLOUD COVER MCLEAR MCLDY MCLDY
PRECIP TYPE NONE SHOWERS SHOWERS
CHANCE PRECIP (%) 10 70 40
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 87 (+4) 62 (-6) 78
RH % (24H TREND) 55 (0) 97 (-3) 71
20FT WND AM(MPH) LGT/VAR NE 5
20FT WND PM(MPH) SW 5 LGT/VAR NE 6
PRECIP AMOUNT 0.00 0.41 0.26
PRECIP DURATION 5 2
PRECIP BEGIN 9 PM CONTINUING
PRECIP END CONTINUING CONTINUING
MIXING HGT (FT-AGL) 5230 430 4100
TRANSPORT WND (KTS) SW 7 N 6 NE 9
VENT RATE (KT-FT) 36610 2580 36900
MAX ADI EARLY 21 FAIR 10 POOR 32 FAIR
MAX ADI LATE 36 FAIR 4 VERY POOR 31 FAIR
MAX LVORI EARLY 3 6 3
MAX LVORI LATE 3 6 3
MIN VSBY EARLY 8 9 6 FOG
MIN VSBY LATE 9 7 7
SUNSHINE HOURS N/A N/A N/A
CWR 0 50 40
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
FRIDAY NIGHT
CLOUDY WITH SHOWERS LIKELY. PATCHY FOG. LOWS IN
THE LOWER 60S. NORTHEAST WINDS 5 TO 10 MPH.
SATURDAY
SHOWERS. PATCHY FOG. HIGHS IN THE MID 70S. NORTHEAST
WINDS 5 TO 10 MPH.
SATURDAY NIGHT
CLOUDY WITH SHOWERS LIKELY. LOWS IN THE MID
60S. EAST WINDS AROUND 5 MPH.
SUNDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. HIGHS IN THE
LOWER 80S. SOUTH WINDS 5 TO 10 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 60S. SOUTHWEST
WINDS 5 TO 10 MPH.
MONDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS
5 TO 10 MPH.
MONDAY NIGHT THROUGH WEDNESDAY
MOSTLY CLEAR. LOWS AROUND 60.
HIGHS AROUND 80. SOUTHWEST WINDS 5 TO 10 MPH.
MAZ022-202000-
BARNSTABLE MA-
INCLUDING THE CITIES OF CHATHAM, FALMOUTH, AND PROVINCETOWN
407 AM EDT THU AUG 20 2026
TODAY TONIGHT FRI
CLOUD COVER MCLEAR MCLDY MCLDY
PRECIP TYPE NONE SHOWERS SHOWERS
CHANCE PRECIP (%) 10 70 40
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 82 (+1) 64 (-4) 76
RH % (24H TREND) 63 (+4) 100 (0) 74
20FT WND AM(MPH) LGT/VAR NE 5
20FT WND PM(MPH) LGT/VAR LGT/VAR NE 6
PRECIP AMOUNT 0.00 0.25 0.26
PRECIP DURATION 4 2
PRECIP BEGIN 10 PM CONTINUING
PRECIP END CONTINUING CONTINUING
MIXING HGT (FT-AGL) 2740 420 2850
TRANSPORT WND (KTS) SW 6 NE 8 NE 10
VENT RATE (KT-FT) 16440 3360 28500
MAX ADI EARLY 8 POOR 10 POOR 27 FAIR
MAX ADI LATE 12 POOR 5 VERY POOR 25 FAIR
MAX LVORI EARLY 4 6 4
MAX LVORI LATE 4 6 4
MIN VSBY EARLY 6 FOG 9 6 FOG
MIN VSBY LATE 9 6 FOG 6 FOG
SUNSHINE HOURS N/A N/A N/A
CWR 0 40 40
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. PATCHY
FOG. LOWS IN THE MID 60S. EAST WINDS 5 TO 10 MPH.
SATURDAY
SHOWERS. PATCHY FOG. HIGHS IN THE MID 70S. EAST WINDS
5 TO 10 MPH.
SATURDAY NIGHT
SHOWERS. LOWS IN THE UPPER 60S. SOUTH WINDS
AROUND 5 MPH.
SUNDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY. HIGHS IN THE UPPER
70S. SOUTH WINDS 5 TO 10 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 60S. SOUTHWEST
WINDS 5 TO 10 MPH.
MONDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS
5 TO 10 MPH.
MONDAY NIGHT THROUGH WEDNESDAY
MOSTLY CLEAR. LOWS IN THE MID
60S. HIGHS IN THE UPPER 70S. SOUTHWEST WINDS 5 TO 10 MPH.
MAZ023-202000-
DUKES MA-
INCLUDING THE CITY OF VINEYARD HAVEN
407 AM EDT THU AUG 20 2026
TODAY TONIGHT FRI
CLOUD COVER MCLEAR MCLDY MCLDY
PRECIP TYPE NONE SHOWERS SHOWERS
CHANCE PRECIP (%) 70 40
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 83 (+5) 64 (-4) 77
RH % (24H TREND) 61 (-8) 93 (-7) 74
20FT WND AM(MPH) LGT/VAR NE 7
20FT WND PM(MPH) SW 6 LGT/VAR NE 8
PRECIP AMOUNT 0.00 0.28 0.35
PRECIP DURATION 4 2
PRECIP BEGIN 8 PM CONTINUING
PRECIP END CONTINUING CONTINUING
MIXING HGT (FT-AGL) 1220 490 2490
TRANSPORT WND (KTS) SW 6 SW 9 E 10
VENT RATE (KT-FT) 7320 4410 24900
MAX ADI EARLY 8 POOR 12 POOR 31 FAIR
MAX ADI LATE 13 GEN POOR 11 POOR 30 FAIR
MAX LVORI EARLY 4 5 3
MAX LVORI LATE 4 5 3
MIN VSBY EARLY 6 FOG 8 6 FOG
MIN VSBY LATE 9 6 FOG 6 FOG
SUNSHINE HOURS N/A N/A N/A
CWR 0 50 40
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
FRIDAY NIGHT
MOSTLY CLOUDY WITH SHOWERS LIKELY. PATCHY FOG.
LOWS IN THE MID 60S. NORTHEAST WINDS 5 TO 10 MPH.
SATURDAY
SHOWERS. PATCHY FOG. HIGHS IN THE UPPER 70S. EAST
WINDS 10 TO 15 MPH.
SATURDAY NIGHT
SHOWERS. LOWS IN THE UPPER 60S. SOUTH WINDS
5 TO 10 MPH.
SUNDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. HIGHS IN THE
UPPER 70S. SOUTH WINDS 5 TO 10 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 60S. SOUTHWEST
WINDS 5 TO 10 MPH.
MONDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 70S. SOUTHWEST WINDS
10 TO 15 MPH.
MONDAY NIGHT THROUGH WEDNESDAY
MOSTLY CLEAR. LOWS IN THE MID
60S. HIGHS IN THE UPPER 70S. SOUTHWEST WINDS 10 TO 15 MPH.
MAZ024-202000-
NANTUCKET MA-
INCLUDING THE CITY OF NANTUCKET
407 AM EDT THU AUG 20 2026
TODAY TONIGHT FRI
CLOUD COVER MCLEAR MCLDY MCLDY
PRECIP TYPE NONE SHOWERS SHOWERS
CHANCE PRECIP (%) 50 40
CHANCE OF THUNDER (%) 0 0 0
TEMP (24H TREND) 79 (+1) 65 (-4) 75
RH % (24H TREND) 77 (-2) 97 (-3) 79
20FT WND AM(MPH) LGT/VAR E 6
20FT WND PM(MPH) SW 6 LGT/VAR E 8
PRECIP AMOUNT 0.00 0.11 0.42
PRECIP DURATION 2 2
PRECIP BEGIN 8 PM CONTINUING
PRECIP END CONTINUING CONTINUING
MIXING HGT (FT-AGL) 790 540 1840
TRANSPORT WND (KTS) SW 10 SW 8 E 10
VENT RATE (KT-FT) 7900 4320 18400
MAX ADI EARLY 8 POOR 12 POOR 25 FAIR
MAX ADI LATE 12 POOR 9 POOR 25 FAIR
MAX LVORI EARLY 5 6 5
MAX LVORI LATE 5 6 5
MIN VSBY EARLY 3 FOG 5 FOG 1 FOG
MIN VSBY LATE 8 1 FOG 4 FOG
SUNSHINE HOURS N/A N/A N/A
CWR 0 20 30
REMARKS...NONE.
FORECAST FOR DAYS 3 THROUGH 7
FRIDAY NIGHT
MOSTLY CLOUDY WITH SHOWERS LIKELY. PATCHY FOG.
LOWS IN THE MID 60S. EAST WINDS 5 TO 10 MPH.
SATURDAY
SHOWERS. PATCHY FOG. HIGHS IN THE UPPER 70S.
SOUTHEAST WINDS 10 TO 15 MPH.
SATURDAY NIGHT AND SUNDAY
SHOWERS. LOWS AROUND 70. HIGHS IN
THE UPPER 70S. SOUTH WINDS 5 TO 10 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS
AROUND 70. SOUTHWEST WINDS 5 TO 10 MPH.
MONDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 70S. SOUTHWEST WINDS
10 TO 15 MPH.
MONDAY NIGHT THROUGH WEDNESDAY
MOSTLY CLEAR. LOWS IN THE UPPER
60S. HIGHS IN THE UPPER 70S. SOUTHWEST WINDS 10 TO 15 MPH.
OUTLOOK 8 TO 14 DAYS
TEMPERATURES ABOVE NORMAL. PRECIPITATION ABOVE NORMAL.
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