018
FNUS53 KLOT 200828
FWFLOT
FIRE WEATHER PLANNING FORECAST FOR NORTHERN IL AND NORTHWEST IN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
328 AM CDT SUN SEP 20 2026
DISCUSSION
PERIODS OF SHOWERS AND THUNDERSTORMS WILL CONTINUE
INTO THIS AFTERNOON, ENDING FROM WEST TO EAST ACROSS THE AREA. HEAVY
RAIN AND LOCALIZED FLASH FLOODING WILL BE POSSIBLE. NORTHEAST WINDS
MAY GUST AS HIGH AS 30 MPH TODAY THROUGH MONDAY, ESPECIALLY NEAR
LAKE MICHIGAN. BELOW NORMAL TEMPERATURES ARE EXPECTED THROUGH THE END
OF THE WEEK WITH LOW CHANCES FOR SHOWERS, MAINLY MONDAY AND TUESDAY.
ILZ014-202115-
COOK-
INCLUDING THE CITIES OF CHICAGO, SCHAUMBURG, EVANSTON, OAK LAWN,
LEMONT, ORLAND PARK, AND PARK FOREST
328 AM CDT SUN SEP 20 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER CLOUDY CLOUDY MCLDY MCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 90 30 30 20
MAX TEMP (24HR TREND) 69 (-2) 65
MIN RH % (24HR TREND) 88 (+4) 74
MIN TEMP (24HR TREND) 57 (-10) 53
MAX RH % (24HR TREND) 96 (-4) 90
20FT WIND AM (MPH) NE 10-15 NE 10-15
20FT WIND PM (MPH) NE 10-15 NE 10-15 NE 10-15 NE 10-15
PEAK WIND GUSTS (MPH) 29 26 28 27
PRECIP AMOUNT (IN) 0.25-0.50 0.05-0.10 0.01-0.05 0.00
11 AM MIXING HGT (FT) 900 2600
MAX MIXING HGT (FT) 1000 3200
TRANSPORT WND (MPH) NE 10 NE 17
VENT RATE (MPH-FT) 10000 54400
VENT RATE CATEGORY POOR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 60S. NORTHEAST WINDS
AROUND 15 MPH.
TUESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. NORTHEAST
WINDS AROUND 10 MPH.
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST WINDS 5 TO
10 MPH.
THURSDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 5 MPH.
THURSDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 50S. NORTHEAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST WINDS
AROUND 5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 70S. LIGHT WINDS,
BECOMING NORTHEAST AROUND 5 MPH IN THE AFTERNOON.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. LIGHT
WINDS.
ILZ006-202115-
LAKE IL-
INCLUDING THE CITIES OF WAUKEGAN, BUFFALO GROVE, MUNDELEIN,
AND GURNEE
328 AM CDT SUN SEP 20 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER CLOUDY MCLDY CLOUDY MCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 80 20 30 20
MAX TEMP (24HR TREND) 68 (0) 64
MIN RH % (24HR TREND) 91 (+1) 78
MIN TEMP (24HR TREND) 55 (-9) 51
MAX RH % (24HR TREND) 98 (-2) 94
20FT WIND AM (MPH) NE 10-15 E 10-15
20FT WIND PM (MPH) NE 10-15 NE 10-15 NE 10-15 NE 10-15
PEAK WIND GUSTS (MPH) 29 26 28 25
PRECIP AMOUNT (IN) 0.10-0.25 0.05-0.10 0.01-0.05 0.00
11 AM MIXING HGT (FT) 1000 2700
MAX MIXING HGT (FT) 1100 3200
TRANSPORT WND (MPH) NE 20 NE 19
VENT RATE (MPH-FT) 23100 64000
VENT RATE CATEGORY POOR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 60S. NORTHEAST WINDS
AROUND 15 MPH.
TUESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST
WINDS 5 TO 10 MPH.
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE LOWER 60S. NORTHEAST
WINDS 10 TO 15 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST WINDS AROUND
5 MPH.
THURSDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 5 MPH.
THURSDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE LOWER 50S. LIGHT WINDS.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 50. LIGHT WINDS.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. LIGHT WINDS,
BECOMING EAST AROUND 5 MPH IN THE AFTERNOON.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. LIGHT
WINDS.
INZ001-202115-
LAKE IN-
INCLUDING THE CITIES OF GARY, HAMMOND, AND MERRILLVILLE
328 AM CDT SUN SEP 20 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER CLOUDY CLOUDY MCLDY MCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 100 30 30 20
MAX TEMP (24HR TREND) 72 (+1) 65
MIN RH % (24HR TREND) 92 (+6) 77
MIN TEMP (24HR TREND) 54 (-14) 50
MAX RH % (24HR TREND) 97 (-3) 90
20FT WIND AM (MPH) NE 6-11 NE 11-12
20FT WIND PM (MPH) NE 6-11 NE 11-12 NE 11-12 NE 9-11
PEAK WIND GUSTS (MPH) 27 26 26 26
PRECIP AMOUNT (IN) 0.50-0.75 0.05-0.10 0.01-0.05 0.00
11 AM MIXING HGT (FT) 700 2000
MAX MIXING HGT (FT) 1000 2800
TRANSPORT WND (MPH) NE 19 NE 16
VENT RATE (MPH-FT) 20000 44800
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 60S. NORTHEAST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST WINDS 5 TO
10 MPH.
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST WINDS AROUND
5 MPH.
THURSDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 5 MPH.
THURSDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST WINDS
AROUND 5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 70S. LIGHT WINDS,
BECOMING NORTHEAST AROUND 5 MPH IN THE AFTERNOON.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. LIGHT
WINDS.
INZ002-202115-
PORTER-
INCLUDING THE CITIES OF PORTAGE, VALPARAISO, AND CHESTERTON
328 AM CDT SUN SEP 20 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER CLOUDY MCLDY MCLDY MCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 100 30 30 20
MAX TEMP (24HR TREND) 72 (0) 65
MIN RH % (24HR TREND) 89 (+6) 73
MIN TEMP (24HR TREND) 53 (-14) 50
MAX RH % (24HR TREND) 97 (-3) 90
20FT WIND AM (MPH) NE 5-10 NE 10-11
20FT WIND PM (MPH) NE 5-10 NE 10-11 NE 10-11 NE 9-10
PEAK WIND GUSTS (MPH) 23 23 21 21
PRECIP AMOUNT (IN) 0.50-0.75 0.05-0.10 0.01-0.05 0.00
11 AM MIXING HGT (FT) 800 2000
MAX MIXING HGT (FT) 900 2900
TRANSPORT WND (MPH) NE 19 E 16
VENT RATE (MPH-FT) 18000 46400
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 60S. NORTHEAST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST WINDS 5 TO
10 MPH.
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST WINDS AROUND
5 MPH.
THURSDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 5 MPH.
THURSDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST WINDS AROUND
5 MPH IN THE EVENING, BECOMING LIGHT.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST WINDS
AROUND 5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 50. NORTHEAST WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 70S. LIGHT WINDS,
BECOMING NORTHEAST AROUND 5 MPH IN THE AFTERNOON.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. LIGHT
WINDS.
ILZ013-202115-
DUPAGE-
INCLUDING THE CITIES OF NAPERVILLE, WHEATON, DOWNERS GROVE,
LOMBARD, AND CAROL STREAM
328 AM CDT SUN SEP 20 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER CLOUDY CLOUDY MCLDY MCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 100 30 30 20
MAX TEMP (24HR TREND) 69 (-2) 64
MIN RH % (24HR TREND) 90 (0) 77
MIN TEMP (24HR TREND) 57 (-10) 53
MAX RH % (24HR TREND) 96 (-3) 93
20FT WIND AM (MPH) NE 10-15 NE 10-15
20FT WIND PM (MPH) NE 10-15 NE 10-15 NE 10-15 NE 9-11
PEAK WIND GUSTS (MPH) 28 25 25 19
PRECIP AMOUNT (IN) 0.25-0.50 0.05-0.10 0.01-0.05 0.00
11 AM MIXING HGT (FT) 900 2600
MAX MIXING HGT (FT) 1100 3100
TRANSPORT WND (MPH) NE 10 NE 17
VENT RATE (MPH-FT) 11000 52700
VENT RATE CATEGORY POOR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 60S. NORTHEAST WINDS
AROUND 15 MPH.
TUESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST
WINDS AROUND 10 MPH.
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST WINDS AROUND
5 MPH.
THURSDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 5 MPH.
THURSDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST WINDS
AROUND 5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 70S. NORTHEAST WINDS
AROUND 5 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. LIGHT
WINDS.
ILZ012-202115-
KANE-
INCLUDING THE CITIES OF AURORA AND ELGIN
328 AM CDT SUN SEP 20 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER CLOUDY CLOUDY MCLDY MCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 90 30 30 30
MAX TEMP (24HR TREND) 68 (-1) 64
MIN RH % (24HR TREND) 89 (-2) 80
MIN TEMP (24HR TREND) 56 (-9) 52
MAX RH % (24HR TREND) 97 (-3) 95
20FT WIND AM (MPH) NE 10-15 NE 10-15
20FT WIND PM (MPH) NE 10-15 NE 10-15 NE 10-15 NE 9-11
PEAK WIND GUSTS (MPH) 28 24 26 20
PRECIP AMOUNT (IN) 0.25-0.50 0.05-0.10 0.01-0.05 0.00
11 AM MIXING HGT (FT) 900 2600
MAX MIXING HGT (FT) 1100 2800
TRANSPORT WND (MPH) NE 12 E 19
VENT RATE (MPH-FT) 14300 56000
VENT RATE CATEGORY POOR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
PARTLY SUNNY. HIGHS IN THE LOWER 60S. NORTHEAST WINDS
AROUND 15 MPH.
TUESDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 50. NORTHEAST WINDS
5 TO 10 MPH.
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S.
NORTHEAST WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 5 MPH.
THURSDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 50. NORTHEAST WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST WINDS
AROUND 5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHEAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SATURDAY
MOSTLY SUNNY. HIGHS AROUND 70. LIGHT WINDS, BECOMING
EAST AROUND 5 MPH IN THE AFTERNOON.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. LIGHT
WINDS.
ILZ005-202115-
MCHENRY-
INCLUDING THE CITIES OF CRYSTAL LAKE, ALGONQUIN, MCHENRY,
AND WOODSTOCK
328 AM CDT SUN SEP 20 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER CLOUDY CLOUDY CLOUDY MCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 70 20 20 20
MAX TEMP (24HR TREND) 67 (-1) 63
MIN RH % (24HR TREND) 91 (-2) 82
MIN TEMP (24HR TREND) 55 (-8) 50
MAX RH % (24HR TREND) 97 (-3) 96
20FT WIND AM (MPH) NE 10-15 E 10-15
20FT WIND PM (MPH) NE 10-15 NE 10-15 NE 10-15 NE 8-10
PEAK WIND GUSTS (MPH) 27 24 26 19
PRECIP AMOUNT (IN) 0.10-0.25 0.05-0.10 0.01-0.05 0.00
11 AM MIXING HGT (FT) 1000 2700
MAX MIXING HGT (FT) 1100 3000
TRANSPORT WND (MPH) NE 20 E 19
VENT RATE (MPH-FT) 23100 60000
VENT RATE CATEGORY POOR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
PARTLY SUNNY. HIGHS IN THE LOWER 60S. NORTHEAST WINDS
AROUND 15 MPH.
TUESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHEAST
WINDS 5 TO 10 MPH.
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE LOWER 60S. NORTHEAST
WINDS AROUND 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S.
NORTHEAST WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
THURSDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 5 MPH.
THURSDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 50. LIGHT WINDS.
FRIDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST WINDS
AROUND 5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S. LIGHT
WINDS.
SATURDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. LIGHT WINDS,
BECOMING EAST AROUND 5 MPH IN THE AFTERNOON.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. LIGHT
WINDS.
ILZ004-202115-
BOONE-
INCLUDING THE CITY OF BELVIDERE
328 AM CDT SUN SEP 20 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER CLOUDY CLOUDY MCLDY MCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 70 20 30 30
MAX TEMP (24HR TREND) 67 (-1) 63
MIN RH % (24HR TREND) 87 (-4) 78
MIN TEMP (24HR TREND) 54 (-9) 49
MAX RH % (24HR TREND) 96 (-4) 97
20FT WIND AM (MPH) NE 10-15 NE 10-15
20FT WIND PM (MPH) NE 10-15 NE 10-15 NE 10-15 NE 8-10
PEAK WIND GUSTS (MPH) 26 23 25 19
PRECIP AMOUNT (IN) 0.10-0.25 0.05-0.10 0.01-0.05 0.00
11 AM MIXING HGT (FT) 1000 2600
MAX MIXING HGT (FT) 1100 2900
TRANSPORT WND (MPH) NE 21 E 19
VENT RATE (MPH-FT) 24200 58000
VENT RATE CATEGORY POOR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
PARTLY SUNNY. HIGHS IN THE LOWER 60S. NORTHEAST WINDS
10 TO 15 MPH.
TUESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHEAST
WINDS AROUND 5 MPH.
WEDNESDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S.
NORTHEAST WINDS AROUND 5 MPH.
THURSDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 5 MPH.
THURSDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. LIGHT
WINDS.
FRIDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST WINDS
AROUND 5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S. LIGHT
WINDS.
SATURDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. LIGHT WINDS,
BECOMING EAST AROUND 5 MPH IN THE AFTERNOON.
SATURDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS AROUND 50. LIGHT WINDS.
ILZ011-202115-
DE KALB-
INCLUDING THE CITIES OF DEKALB AND SYCAMORE
328 AM CDT SUN SEP 20 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER CLOUDY CLOUDY MCLDY MCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 90 30 30 30
MAX TEMP (24HR TREND) 69 (+1) 64
MIN RH % (24HR TREND) 85 (-12) 75
MIN TEMP (24HR TREND) 55 (-10) 50
MAX RH % (24HR TREND) 96 (-4) 97
20FT WIND AM (MPH) NE 10-15 NE 10-15
20FT WIND PM (MPH) NE 10-15 NE 10-15 NE 10-15 NE 9-11
PEAK WIND GUSTS (MPH) 27 23 25 19
PRECIP AMOUNT (IN) 0.25-0.50 0.05-0.10 0.01-0.05 0.00
11 AM MIXING HGT (FT) 900 2400
MAX MIXING HGT (FT) 1100 2700
TRANSPORT WND (MPH) NE 20 E 19
VENT RATE (MPH-FT) 23100 54000
VENT RATE CATEGORY POOR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
PARTLY SUNNY. HIGHS IN THE LOWER 60S. NORTHEAST WINDS
AROUND 15 MPH.
TUESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHEAST
WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
10 TO 15 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S.
NORTHEAST WINDS AROUND 5 MPH.
THURSDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 5 MPH.
THURSDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 50. NORTHEAST WINDS
AROUND 5 MPH.
FRIDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST WINDS
AROUND 5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHEAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SATURDAY
PARTLY SUNNY. HIGHS IN THE LOWER 70S. NORTHEAST WINDS
AROUND 5 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. LIGHT
WINDS.
ILZ003-202115-
WINNEBAGO-
INCLUDING THE CITY OF ROCKFORD
328 AM CDT SUN SEP 20 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER CLOUDY CLOUDY MCLDY MCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 70 20 30 30
MAX TEMP (24HR TREND) 66 (-3) 63
MIN RH % (24HR TREND) 86 (-3) 78
MIN TEMP (24HR TREND) 54 (-9) 49
MAX RH % (24HR TREND) 96 (-4) 100
20FT WIND AM (MPH) NE 10-15 NE 10-15
20FT WIND PM (MPH) NE 10-15 NE 10-15 NE 10-15 NE 9-11
PEAK WIND GUSTS (MPH) 25 23 24 19
PRECIP AMOUNT (IN) 0.10-0.25 0.05-0.10 0.01-0.05 0.00
11 AM MIXING HGT (FT) 1000 2500
MAX MIXING HGT (FT) 1200 2900
TRANSPORT WND (MPH) NE 21 E 18
VENT RATE (MPH-FT) 26400 52200
VENT RATE CATEGORY POOR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
PARTLY SUNNY. HIGHS IN THE LOWER 60S. NORTHEAST WINDS
AROUND 15 MPH.
TUESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S. NORTHEAST
WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S.
NORTHEAST WINDS AROUND 5 MPH.
THURSDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 5 MPH.
THURSDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHEAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
FRIDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST WINDS
AROUND 5 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE UPPER 40S. LIGHT WINDS.
SATURDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. LIGHT WINDS,
BECOMING EAST AROUND 5 MPH IN THE AFTERNOON.
SATURDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS AROUND 50. LIGHT WINDS.
ILZ008-202115-
OGLE-
INCLUDING THE CITIES OF ROCHELLE, OREGON, AND BYRON
328 AM CDT SUN SEP 20 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER CLOUDY CLOUDY MCLDY MCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 80 20 30 30
MAX TEMP (24HR TREND) 68 (-1) 64
MIN RH % (24HR TREND) 85 (-8) 76
MIN TEMP (24HR TREND) 54 (-10) 49
MAX RH % (24HR TREND) 97 (-3) 99
20FT WIND AM (MPH) NE 10-15 NE 10-15
20FT WIND PM (MPH) NE 10-15 NE 10-15 NE 10-15 NE 9-11
PEAK WIND GUSTS (MPH) 25 23 24 20
PRECIP AMOUNT (IN) 0.25-0.50 0.05-0.10 0.01-0.05 0.00
11 AM MIXING HGT (FT) 900 2400
MAX MIXING HGT (FT) 1200 2700
TRANSPORT WND (MPH) NE 21 NE 19
VENT RATE (MPH-FT) 26400 54000
VENT RATE CATEGORY POOR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
PARTLY SUNNY. HIGHS IN THE LOWER 60S. NORTHEAST WINDS
AROUND 15 MPH.
TUESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHEAST
WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S.
NORTHEAST WINDS AROUND 5 MPH.
THURSDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 5 MPH.
THURSDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHEAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
FRIDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST WINDS
AROUND 5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S. LIGHT
WINDS.
SATURDAY
PARTLY SUNNY. HIGHS AROUND 70. LIGHT WINDS, BECOMING
EAST AROUND 5 MPH IN THE AFTERNOON.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. LIGHT
WINDS.
ILZ010-202115-
LEE-
INCLUDING THE CITY OF DIXON
328 AM CDT SUN SEP 20 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER CLOUDY CLOUDY MCLDY MCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 100 20 30 30
MAX TEMP (24HR TREND) 69 (0) 64
MIN RH % (24HR TREND) 84 (-12) 75
MIN TEMP (24HR TREND) 56 (-10) 50
MAX RH % (24HR TREND) 96 (-4) 100
20FT WIND AM (MPH) NE 10-15 NE 10-15
20FT WIND PM (MPH) NE 10-15 NE 10-15 NE 10-15 NE 9-11
PEAK WIND GUSTS (MPH) 25 23 24 19
PRECIP AMOUNT (IN) 0.25-0.50 0.01-0.05 0.01-0.05 0.00
11 AM MIXING HGT (FT) 900 2300
MAX MIXING HGT (FT) 1100 2600
TRANSPORT WND (MPH) NE 20 E 19
VENT RATE (MPH-FT) 23100 52000
VENT RATE CATEGORY POOR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
PARTLY SUNNY. HIGHS IN THE LOWER 60S. NORTHEAST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHEAST
WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S.
NORTHEAST WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST WINDS
AROUND 5 MPH.
THURSDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
FRIDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST WINDS
AROUND 5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S. LIGHT
WINDS.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 70S. LIGHT WINDS,
BECOMING EAST AROUND 5 MPH IN THE AFTERNOON.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. LIGHT
WINDS.
ILZ019-202115-
LA SALLE-
INCLUDING THE CITIES OF OTTAWA, STREATOR, LA SALLE, MENDOTA,
AND MARSEILLES
328 AM CDT SUN SEP 20 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER CLOUDY CLOUDY MCLDY MCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 100 30 30 30
MAX TEMP (24HR TREND) 71 (-2) 65
MIN RH % (24HR TREND) 82 (-5) 72
MIN TEMP (24HR TREND) 58 (-10) 54
MAX RH % (24HR TREND) 94 (-6) 91
20FT WIND AM (MPH) NE 10-15 NE 10-15
20FT WIND PM (MPH) NE 10-15 NE 10-15 NE 10-15 NE 9-11
PEAK WIND GUSTS (MPH) 24 23 24 20
PRECIP AMOUNT (IN) 0.50-0.75 0.05-0.10 0.01-0.05 0.00
11 AM MIXING HGT (FT) 800 2200
MAX MIXING HGT (FT) 1100 2700
TRANSPORT WND (MPH) NE 20 E 18
VENT RATE (MPH-FT) 23100 48600
VENT RATE CATEGORY POOR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST
WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST
WINDS AROUND 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S.
NORTHEAST WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST WINDS
AROUND 5 MPH.
THURSDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
FRIDAY
PARTLY SUNNY. HIGHS AROUND 70. NORTHEAST WINDS AROUND
5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 50. NORTHEAST WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 70S. LIGHT WINDS,
BECOMING EAST AROUND 5 MPH IN THE AFTERNOON.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. LIGHT
WINDS.
ILZ020-202115-
KENDALL-
INCLUDING THE CITIES OF OSWEGO, YORKVILLE, AND PLANO
328 AM CDT SUN SEP 20 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER CLOUDY CLOUDY MCLDY MCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 100 30 30 30
MAX TEMP (24HR TREND) 70 (0) 65
MIN RH % (24HR TREND) 85 (-11) 74
MIN TEMP (24HR TREND) 57 (-10) 53
MAX RH % (24HR TREND) 95 (-5) 93
20FT WIND AM (MPH) NE 10-15 NE 10-15
20FT WIND PM (MPH) NE 10-15 NE 10-15 NE 10-15 NE 10-11
PEAK WIND GUSTS (MPH) 26 24 24 19
PRECIP AMOUNT (IN) 0.25-0.50 0.01-0.05 0.01-0.05 0.00
11 AM MIXING HGT (FT) 900 2400
MAX MIXING HGT (FT) 1000 2600
TRANSPORT WND (MPH) NE 19 NE 18
VENT RATE (MPH-FT) 20000 46800
VENT RATE CATEGORY POOR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
PARTLY SUNNY. HIGHS IN THE LOWER 60S. NORTHEAST WINDS
10 TO 15 MPH.
TUESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST
WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 50. NORTHEAST WINDS
AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST WINDS
AROUND 5 MPH.
THURSDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST
WINDS AROUND 5 MPH.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST WINDS
AROUND 5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 50. NORTHEAST WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 70S. LIGHT WINDS,
BECOMING EAST AROUND 5 MPH IN THE AFTERNOON.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. LIGHT
WINDS.
ILZ021-202115-
GRUNDY-
INCLUDING THE CITIES OF MORRIS, COAL CITY, AND MINOOKA
328 AM CDT SUN SEP 20 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER CLOUDY CLOUDY MCLDY MCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 100 30 30 30
MAX TEMP (24HR TREND) 73 (-1) 67
MIN RH % (24HR TREND) 87 (-3) 75
MIN TEMP (24HR TREND) 59 (-9) 55
MAX RH % (24HR TREND) 96 (-4) 90
20FT WIND AM (MPH) NE 1-6 NE 12
20FT WIND PM (MPH) NE 7-12 NE 11-12 NE 12 NE 8-10
PEAK WIND GUSTS (MPH) 24 21 21 19
PRECIP AMOUNT (IN) 0.50-0.75 0.05-0.10 0.01-0.05 0.00
11 AM MIXING HGT (FT) 800 2200
MAX MIXING HGT (FT) 1000 2900
TRANSPORT WND (MPH) NE 20 NE 17
VENT RATE (MPH-FT) 21000 49300
VENT RATE CATEGORY POOR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST
WINDS AROUND 5 MPH.
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST
WINDS AROUND 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING THEN CLEARING.
LOWS IN THE LOWER 50S. NORTHEAST WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST WINDS
AROUND 5 MPH.
THURSDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 70S. NORTHEAST WINDS
AROUND 5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. LIGHT
WINDS.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 70S. LIGHT WINDS,
BECOMING EAST AROUND 5 MPH IN THE AFTERNOON.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. LIGHT
WINDS.
ILZ022-202115-
WILL-
INCLUDING THE CITIES OF JOLIET, BOLINGBROOK, AND WILMINGTON
328 AM CDT SUN SEP 20 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER CLOUDY CLOUDY MCLDY MCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 100 30 30 20
MAX TEMP (24HR TREND) 72 (0) 65
MIN RH % (24HR TREND) 87 (-6) 75
MIN TEMP (24HR TREND) 55 (-13) 52
MAX RH % (24HR TREND) 96 (-4) 92
20FT WIND AM (MPH) NE 10-15 NE 10-15
20FT WIND PM (MPH) NE 10-15 NE 10-15 NE 10-15 NE 9-11
PEAK WIND GUSTS (MPH) 26 25 24 19
PRECIP AMOUNT (IN) 0.50-0.75 0.01-0.05 0.01-0.05 0.00
11 AM MIXING HGT (FT) 800 2300
MAX MIXING HGT (FT) 1000 2800
TRANSPORT WND (MPH) NE 21 NE 17
VENT RATE (MPH-FT) 22000 47600
VENT RATE CATEGORY POOR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
PARTLY SUNNY. HIGHS IN THE LOWER 60S. NORTHEAST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST
WINDS 5 TO 10 MPH.
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST WINDS AROUND
5 MPH.
THURSDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST WINDS
AROUND 5 MPH.
THURSDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST WINDS
AROUND 5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 50. NORTHEAST WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 70S. LIGHT WINDS,
BECOMING NORTHEAST AROUND 5 MPH IN THE AFTERNOON.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. LIGHT
WINDS.
ILZ032-202115-
LIVINGSTON-
INCLUDING THE CITIES OF PONTIAC, DWIGHT, AND FAIRBURY
328 AM CDT SUN SEP 20 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER CLOUDY MCLDY MCLDY MCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 90 30 30 20
MAX TEMP (24HR TREND) 76 (0) 67
MIN RH % (24HR TREND) 90 (+7) 78
MIN TEMP (24HR TREND) 57 (-11) 53
MAX RH % (24HR TREND) 100 (0) 97
20FT WIND AM (MPH) LGT/VAR NE 11
20FT WIND PM (MPH) NE 4-9 NE 10-12 NE 11 NE 8-9
PEAK WIND GUSTS (MPH) 20 20 20 19
PRECIP AMOUNT (IN) 0.50-0.75 0.10-0.25 0.01-0.05 0.00
11 AM MIXING HGT (FT) 900 2000
MAX MIXING HGT (FT) 1100 2800
TRANSPORT WND (MPH) NE 18 E 18
VENT RATE (MPH-FT) 19800 50400
VENT RATE CATEGORY POOR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST WINDS AROUND
5 MPH.
WEDNESDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST
WINDS AROUND 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST WINDS AROUND
5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST WINDS
AROUND 5 MPH.
THURSDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
FRIDAY
PARTLY SUNNY. HIGHS IN THE LOWER 70S. NORTHEAST WINDS
AROUND 5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 50. NORTHEAST WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SATURDAY
PARTLY SUNNY. HIGHS IN THE LOWER 70S. LIGHT WINDS,
BECOMING NORTHEAST AROUND 5 MPH IN THE AFTERNOON.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. LIGHT
WINDS.
ILZ023-202115-
KANKAKEE-
INCLUDING THE CITIES OF KANKAKEE, BOURBONNAIS, AND BRADLEY
328 AM CDT SUN SEP 20 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER CLOUDY MCLDY MCLDY MCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 90 30 30 20
MAX TEMP (24HR TREND) 73 (-1) 66
MIN RH % (24HR TREND) 89 (+1) 74
MIN TEMP (24HR TREND) 55 (-13) 51
MAX RH % (24HR TREND) 98 (-1) 91
20FT WIND AM (MPH) LGT/VAR NE 10
20FT WIND PM (MPH) NE 4-9 NE 9-11 NE 10 NE 8-9
PEAK WIND GUSTS (MPH) 21 21 19 18
PRECIP AMOUNT (IN) 0.50-0.75 0.10-0.25 0.01-0.05 0.00
11 AM MIXING HGT (FT) 800 2000
MAX MIXING HGT (FT) 1000 2800
TRANSPORT WND (MPH) NE 18 E 17
VENT RATE (MPH-FT) 18000 47600
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST
WINDS AROUND 5 MPH.
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS AROUND 50. NORTHEAST WINDS AROUND 5 MPH.
THURSDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST WINDS
AROUND 5 MPH.
THURSDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST WINDS
AROUND 5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S. LIGHT
WINDS.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 70S. LIGHT WINDS,
BECOMING NORTHEAST AROUND 5 MPH IN THE AFTERNOON.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. LIGHT
WINDS.
ILZ039-202115-
FORD-
INCLUDING THE CITIES OF PAXTON AND GIBSON CITY
328 AM CDT SUN SEP 20 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER CLOUDY CLOUDY MCLDY MCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 80 40 40 20
MAX TEMP (24HR TREND) 79 (+1) 67
MIN RH % (24HR TREND) 81 (-4) 75
MIN TEMP (24HR TREND) 57 (-11) 53
MAX RH % (24HR TREND) 100 (0) 96
20FT WIND AM (MPH) LGT/VAR NE 11
20FT WIND PM (MPH) N 4-8 NE 10-11 NE 11 NE 9-10
PEAK WIND GUSTS (MPH) 17 18 19 18
PRECIP AMOUNT (IN) 0.50-0.75 0.10-0.25 0.01-0.05 0.00
11 AM MIXING HGT (FT) 1000 2000
MAX MIXING HGT (FT) 1400 2700
TRANSPORT WND (MPH) NE 9 E 17
VENT RATE (MPH-FT) 12600 45900
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 50. NORTHEAST WINDS
5 TO 10 MPH.
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST
WINDS AROUND 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS AROUND 50. NORTHEAST WINDS AROUND 5 MPH.
THURSDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST WINDS
AROUND 5 MPH.
THURSDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST
WINDS AROUND 5 MPH.
FRIDAY
PARTLY SUNNY. HIGHS IN THE LOWER 70S. NORTHEAST WINDS
AROUND 5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHEAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 70S. LIGHT WINDS,
BECOMING NORTHEAST AROUND 5 MPH IN THE AFTERNOON.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. LIGHT
WINDS.
ILZ033-202115-
IROQUOIS-
INCLUDING THE CITIES OF WATSEKA AND GILMAN
328 AM CDT SUN SEP 20 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER CLOUDY CLOUDY MCLDY MCLDY
PRECIP TYPE TSTMS SHOWERS SHOWERS SHOWERS
CHANCE PRECIP (%) 90 40 30 20
MAX TEMP (24HR TREND) 78 (+2) 67
MIN RH % (24HR TREND) 78 (-7) 69
MIN TEMP (24HR TREND) 56 (-11) 52
MAX RH % (24HR TREND) 99 (-1) 92
20FT WIND AM (MPH) LGT/VAR NE 9-10
20FT WIND PM (MPH) N 3-7 NE 8-11 NE 9-10 NE 7-8
PEAK WIND GUSTS (MPH) 18 17 17
PRECIP AMOUNT (IN) 0.50-0.75 0.10-0.25 0.01-0.05 0.00
11 AM MIXING HGT (FT) 1000 2100
MAX MIXING HGT (FT) 1300 2700
TRANSPORT WND (MPH) NE 9 E 17
VENT RATE (MPH-FT) 11700 45900
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST
WINDS AROUND 5 MPH.
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST
WINDS 5 TO 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 50. NORTHEAST WINDS
AROUND 5 MPH.
THURSDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST WINDS
AROUND 5 MPH.
THURSDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
FRIDAY
MOSTLY SUNNY. HIGHS AROUND 70. NORTHEAST WINDS AROUND
5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S. LIGHT
WINDS.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 70S. LIGHT WINDS.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. LIGHT
WINDS.
INZ010-202115-
NEWTON-
INCLUDING THE CITIES OF ROSELAWN, KENTLAND, AND MOROCCO
328 AM CDT SUN SEP 20 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER CLOUDY CLOUDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 90 30 30 20
MAX TEMP (24HR TREND) 76 (+2) 66
MIN RH % (24HR TREND) 84 (-2) 73
MIN TEMP (24HR TREND) 55 (-12) 50
MAX RH % (24HR TREND) 97 (-2) 90
20FT WIND AM (MPH) LGT/VAR NE 10
20FT WIND PM (MPH) NE 3-7 NE 9-11 NE 10 NE 8-9
PEAK WIND GUSTS (MPH) 19 18 16
PRECIP AMOUNT (IN) 0.50-0.75 0.10-0.25 0.01-0.05 0.00
11 AM MIXING HGT (FT) 1000 2000
MAX MIXING HGT (FT) 1100 2800
TRANSPORT WND (MPH) E 8 E 17
VENT RATE (MPH-FT) 8800 47600
VENT RATE CATEGORY POOR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 60S. NORTHEAST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 50. NORTHEAST WINDS
AROUND 5 MPH.
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
5 TO 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 50. NORTHEAST WINDS
AROUND 5 MPH.
THURSDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST WINDS
AROUND 5 MPH.
THURSDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 50. NORTHEAST WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
FRIDAY
MOSTLY SUNNY. HIGHS AROUND 70. NORTHEAST WINDS AROUND
5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S. LIGHT
WINDS.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 70S. LIGHT WINDS,
BECOMING NORTHEAST AROUND 5 MPH IN THE AFTERNOON.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 50. LIGHT WINDS.
INZ011-202115-
JASPER-
INCLUDING THE CITIES OF RENSSELAER AND DEMOTTE
328 AM CDT SUN SEP 20 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER CLOUDY CLOUDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 90 40 40 20
MAX TEMP (24HR TREND) 76 (+3) 66
MIN RH % (24HR TREND) 85 (-1) 74
MIN TEMP (24HR TREND) 55 (-12) 50
MAX RH % (24HR TREND) 97 (-3) 90
20FT WIND AM (MPH) LGT/VAR NE 10-11
20FT WIND PM (MPH) NE 3-7 NE 10-11 NE 10-11 NE 9-10
PEAK WIND GUSTS (MPH) 19 19 17
PRECIP AMOUNT (IN) 0.75-1.00 0.10-0.25 0.01-0.05 0.00
11 AM MIXING HGT (FT) 1000 2100
MAX MIXING HGT (FT) 1100 2800
TRANSPORT WND (MPH) E 9 E 17
VENT RATE (MPH-FT) 9900 47600
VENT RATE CATEGORY POOR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 50. NORTHEAST WINDS
5 TO 10 MPH.
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 50. NORTHEAST WINDS
AROUND 5 MPH.
THURSDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST WINDS
AROUND 5 MPH.
THURSDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 50. NORTHEAST WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
FRIDAY
MOSTLY SUNNY. HIGHS AROUND 70. NORTHEAST WINDS AROUND
5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S. LIGHT
WINDS.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 70S. LIGHT WINDS,
BECOMING NORTHEAST AROUND 5 MPH IN THE AFTERNOON.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 50. LIGHT WINDS.
INZ019-202115-
BENTON-
INCLUDING THE CITIES OF FOWLER AND OXFORD
428 AM EDT SUN SEP 20 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER CLOUDY MCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 80 40 30 20
MAX TEMP (24HR TREND) 80 (+3) 67
MIN RH % (24HR TREND) 75 (-10) 69
MIN TEMP (24HR TREND) 57 (-10) 53
MAX RH % (24HR TREND) 99 (-1) 89
20FT WIND AM (MPH) LGT/VAR NE 10-11
20FT WIND PM (MPH) N 3-6 NE 10-11 NE 10-11 NE 9-10
PEAK WIND GUSTS (MPH) 19 20 18
PRECIP AMOUNT (IN) 0.50-0.75 0.10-0.25 0.01-0.05 0.00
11 AM MIXING HGT (FT) 1000 2100
MAX MIXING HGT (FT) 1500 2700
TRANSPORT WND (MPH) NE 9 E 18
VENT RATE (MPH-FT) 13500 48600
VENT RATE CATEGORY POOR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST
WINDS AROUND 5 MPH.
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S.
NORTHEAST WINDS AROUND 5 MPH.
THURSDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST WINDS
AROUND 5 MPH.
THURSDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
FRIDAY
MOSTLY SUNNY. HIGHS AROUND 70. NORTHEAST WINDS AROUND
5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S. LIGHT
WINDS.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 70S. LIGHT WINDS,
BECOMING NORTHEAST AROUND 5 MPH IN THE AFTERNOON.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. LIGHT
WINDS.
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