926
FNUS53 KLOT 200919
FWFLOT
FIRE WEATHER PLANNING FORECAST FOR NORTHERN IL AND NORTHWEST IN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
419 AM CDT WED MAY 20 2026
DISCUSSION
DRY, COOL AND BREEZY WEATHER CONDITIONS ARE EXPECTED TODAY
THROUGH THURSDAY NIGHT, AS AN AREA OF HIGH PRESSURE BUILDS EAST
FROM THE UPPER MIDWEST ACROSS THE GREAT LAKES. AFTER SEVERAL
RECENT DAYS OF SUMMER-LIKE WARMTH, HIGHS WILL RANGE FROM THE 50S
DOWNWIND OF LAKE MICHIGAN TO THE LOW-MID 60S WELL WEST AND SOUTH
OF THE LAKE. AN AREA OF LOW PRESSURE WILL LIFT EAST-NORTHEAST
ACROSS THE AREA FRIDAY AND FRIDAY NIGHT, BRINGING A PERIOD OF RAIN
AND SHOWERS. RAINFALL IS FORECAST TO RANGE FROM POTENTIALLY AS
LITTLE AS A TENTH OF AN INCH ACROSS NORTHWEST ILLINOIS TO BETWEEN
A QUARTER AND A HALF INCH FARTHER SOUTHEAST ACROSS PARTS OF
CENTRAL ILLINOIS AND NORTHERN INDIANA.
INTERMITTENT CHANCES FOR SCATTERED SHOWERS WILL CONTINUE THROUGH
THE COMING HOLIDAY WEEKEND, THOUGH MANY DRY HOURS ARE LIKELY. A
GRADUAL WARMING TREND IS ALSO EXPECTED THROUGH THE WEEKEND, WITH
DAYTIME HIGHS RETURNING TO THE 70S IN MOST AREAS AND POSSIBLY 80S
IN SPOTS BY MONDAY. WINDS WILL REMAIN ONSHORE OFF OF LAKE MICHIGAN
HOWEVER, KEEPING LOCATIONS CLOSER TO THE SHORE COOLER.
ILZ014-202130-
COOK-
INCLUDING THE CITIES OF CHICAGO, SCHAUMBURG, EVANSTON, OAK LAWN,
LEMONT, ORLAND PARK, AND PARK FOREST
419 AM CDT WED MAY 20 2026
TODAY TONIGHT THU THU NIGHT
CLOUD COVER PCLDY MCLEAR PCLDY MCLDY
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%)
MAX TEMP (24HR TREND) 60 (-19) 62
MIN RH % (24HR TREND) 45 (-14) 38
MIN TEMP (24HR TREND) 44 (-8) 48
MAX RH % (24HR TREND) 84 (+13) 78
20FT WIND AM (MPH) N 10-15 E 10-15
20FT WIND PM (MPH) NE 10-15 NE 10-11 NE 10-15 NE 10-11
PEAK WIND GUSTS (MPH) 23 21 20 19
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 4000 3100
MAX MIXING HGT (FT) 4200 3500
TRANSPORT WND (MPH) NE 17 NE 17
VENT RATE (MPH-FT) 71400 59500
VENT RATE CATEGORY FAIR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. HIGHS IN THE
LOWER 60S. NORTHEAST WINDS AROUND 15 MPH.
FRIDAY NIGHT
CLOUDY. SHOWERS LIKELY, MAINLY IN THE EVENING.
LOWS IN THE MID 50S. NORTHEAST WINDS AROUND 15 MPH, DECREASING TO
AROUND 5 MPH AFTER MIDNIGHT.
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 70S. NORTH WINDS
5 TO 10 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 50S. NORTHEAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SUNDAY
MOSTLY CLOUDY. HIGHS IN THE MID 70S. EAST WINDS AROUND
5 MPH, BECOMING NORTH IN THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 50S. NORTHEAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
MONDAY
PARTLY SUNNY. HIGHS IN THE MID 70S. EAST WINDS AROUND
5 MPH.
MONDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE UPPER 50S. EAST WINDS AROUND 5 MPH.
TUESDAY
PARTLY SUNNY. HIGHS IN THE UPPER 70S. EAST WINDS 5 TO
10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 60S. SOUTHEAST
WINDS AROUND 5 MPH.
ILZ006-202130-
LAKE IL-
INCLUDING THE CITIES OF WAUKEGAN, BUFFALO GROVE, MUNDELEIN,
AND GURNEE
419 AM CDT WED MAY 20 2026
TODAY TONIGHT THU THU NIGHT
CLOUD COVER PCLDY MCLEAR PCLDY MCLDY
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%)
MAX TEMP (24HR TREND) 58 (-20) 59
MIN RH % (24HR TREND) 47 (-12) 44
MIN TEMP (24HR TREND) 40 (-9) 45
MAX RH % (24HR TREND) 86 (+10) 84
20FT WIND AM (MPH) NE 10-12 E 10-15
20FT WIND PM (MPH) NE 10-12 NE 10 NE 10-15 NE 10-11
PEAK WIND GUSTS (MPH) 20 20 19 18
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 4300 2800
MAX MIXING HGT (FT) 4500 3000
TRANSPORT WND (MPH) NE 16 E 16
VENT RATE (MPH-FT) 72000 48000
VENT RATE CATEGORY FAIR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS AROUND 60. NORTHEAST WINDS AROUND 15 MPH.
FRIDAY NIGHT
CLOUDY WITH SHOWERS LIKELY. LOWS IN THE LOWER
50S. NORTHEAST WINDS 10 TO 15 MPH.
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE UPPER 60S. NORTH WINDS
5 TO 10 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. EAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SUNDAY
PARTLY SUNNY. HIGHS IN THE LOWER 70S. SOUTHEAST WINDS
AROUND 5 MPH, BECOMING NORTH IN THE AFTERNOON.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. NORTH WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
MONDAY
PARTLY SUNNY. HIGHS IN THE MID 70S. SOUTHEAST WINDS
AROUND 5 MPH.
MONDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. SOUTHEAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
TUESDAY
PARTLY SUNNY. HIGHS IN THE MID 70S. SOUTHEAST WINDS
5 TO 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 60. SOUTHEAST WINDS
AROUND 5 MPH.
INZ001-202130-
LAKE IN-
INCLUDING THE CITIES OF GARY, HAMMOND, AND MERRILLVILLE
419 AM CDT WED MAY 20 2026
TODAY TONIGHT THU THU NIGHT
CLOUD COVER MCLDY PCLDY PCLDY MCLDY
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%)
MAX TEMP (24HR TREND) 60 (-20) 66
MIN RH % (24HR TREND) 52 (-7) 42
MIN TEMP (24HR TREND) 44 (-9) 48
MAX RH % (24HR TREND) 92 (+16) 75
20FT WIND AM (MPH) N 10-15 E 11-12
20FT WIND PM (MPH) N 10-15 N 9-10 NE 11-12 NE 9
PEAK WIND GUSTS (MPH) 24 21 20 17
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 3200 3400
MAX MIXING HGT (FT) 3400 4200
TRANSPORT WND (MPH) N 18 NE 18
VENT RATE (MPH-FT) 61200 75600
VENT RATE CATEGORY FAIR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE MORNING, THEN
SHOWERS LIKELY IN THE AFTERNOON. HIGHS IN THE MID 60S. NORTHEAST
WINDS AROUND 10 MPH.
FRIDAY NIGHT
CLOUDY. SHOWERS LIKELY, MAINLY IN THE EVENING.
LOWS IN THE MID 50S. EAST WINDS 5 TO 10 MPH.
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 70S. WEST WINDS
5 TO 10 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 50S. NORTH WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SUNDAY
MOSTLY CLOUDY. HIGHS IN THE MID 70S. EAST WINDS AROUND
5 MPH, BECOMING NORTHEAST IN THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 50S. NORTH WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
MONDAY
PARTLY SUNNY. HIGHS IN THE MID 70S. NORTHEAST WINDS
AROUND 5 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 50S. EAST WINDS
AROUND 5 MPH.
TUESDAY
PARTLY SUNNY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS AROUND 80. EAST WINDS AROUND 5 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 60S. SOUTHEAST
WINDS AROUND 5 MPH.
INZ002-202130-
PORTER-
INCLUDING THE CITIES OF PORTAGE, VALPARAISO, AND CHESTERTON
419 AM CDT WED MAY 20 2026
TODAY TONIGHT THU THU NIGHT
CLOUD COVER MCLDY PCLDY PCLDY MCLDY
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%)
MAX TEMP (24HR TREND) 60 (-20) 66
MIN RH % (24HR TREND) 54 (-5) 40
MIN TEMP (24HR TREND) 43 (-9) 48
MAX RH % (24HR TREND) 91 (+12) 74
20FT WIND AM (MPH) N 10-15 E 11
20FT WIND PM (MPH) N 10-15 N 8-10 NE 11 E 9-10
PEAK WIND GUSTS (MPH) 23 20 18 16
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 3200 3300
MAX MIXING HGT (FT) 3400 4600
TRANSPORT WND (MPH) N 18 NE 18
VENT RATE (MPH-FT) 61200 82800
VENT RATE CATEGORY FAIR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE MORNING, THEN
SHOWERS LIKELY IN THE AFTERNOON. HIGHS IN THE MID 60S. EAST WINDS
10 TO 15 MPH.
FRIDAY NIGHT
SHOWERS. LOWS IN THE MID 50S. EAST WINDS 5 TO
10 MPH.
SATURDAY
MOSTLY CLOUDY. HIGHS AROUND 70. WEST WINDS 5 TO
10 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 50S. NORTHEAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SUNDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 70S. EAST WINDS
AROUND 5 MPH, BECOMING NORTH IN THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 50S. NORTH WINDS
AROUND 5 MPH, BECOMING EAST AFTER MIDNIGHT.
MONDAY
PARTLY SUNNY. HIGHS IN THE MID 70S. NORTHEAST WINDS
AROUND 5 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 50S. EAST WINDS
AROUND 5 MPH.
TUESDAY
PARTLY SUNNY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS AROUND 80. EAST WINDS AROUND 5 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 60S. SOUTHEAST
WINDS AROUND 5 MPH.
ILZ013-202130-
DUPAGE-
INCLUDING THE CITIES OF NAPERVILLE, WHEATON, DOWNERS GROVE,
LOMBARD, AND CAROL STREAM
419 AM CDT WED MAY 20 2026
TODAY TONIGHT THU THU NIGHT
CLOUD COVER PCLDY MCLEAR PCLDY MCLDY
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%)
MAX TEMP (24HR TREND) 60 (-18) 63
MIN RH % (24HR TREND) 43 (-19) 38
MIN TEMP (24HR TREND) 44 (-7) 48
MAX RH % (24HR TREND) 82 (+9) 77
20FT WIND AM (MPH) NE 10-12 E 10-15
20FT WIND PM (MPH) NE 10-12 NE 9-11 NE 10-15 NE 10-11
PEAK WIND GUSTS (MPH) 19 19 20 20
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 4200 3500
MAX MIXING HGT (FT) 4400 3700
TRANSPORT WND (MPH) NE 14 NE 17
VENT RATE (MPH-FT) 66000 62900
VENT RATE CATEGORY FAIR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. HIGHS IN THE
MID 60S. NORTHEAST WINDS AROUND 15 MPH.
FRIDAY NIGHT
CLOUDY. SHOWERS LIKELY, MAINLY IN THE EVENING.
LOWS IN THE MID 50S. EAST WINDS AROUND 15 MPH, BECOMING NORTHEAST
AROUND 5 MPH AFTER MIDNIGHT.
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 70S. NORTH WINDS
AROUND 5 MPH, BECOMING WEST IN THE AFTERNOON.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 50S. NORTHEAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SUNDAY
PARTLY SUNNY. HIGHS IN THE UPPER 70S. SOUTH WINDS
AROUND 5 MPH, BECOMING WEST IN THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE MID 50S. NORTHEAST WINDS AROUND 5 MPH
IN THE EVENING, BECOMING LIGHT.
MONDAY
PARTLY SUNNY. HIGHS IN THE UPPER 70S. EAST WINDS AROUND
5 MPH.
MONDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. SOUTHEAST
WINDS AROUND 5 MPH.
TUESDAY
PARTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHEAST WINDS
5 TO 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 60S. SOUTHEAST
WINDS AROUND 5 MPH.
ILZ012-202130-
KANE-
INCLUDING THE CITIES OF AURORA AND ELGIN
419 AM CDT WED MAY 20 2026
TODAY TONIGHT THU THU NIGHT
CLOUD COVER PCLDY MCLEAR PCLDY MCLDY
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 10
MAX TEMP (24HR TREND) 62 (-15) 64
MIN RH % (24HR TREND) 45 (-19) 39
MIN TEMP (24HR TREND) 42 (-6) 46
MAX RH % (24HR TREND) 85 (+5) 82
20FT WIND AM (MPH) N 10-12 E 10-15
20FT WIND PM (MPH) NE 10-12 NE 10 NE 10-15 NE 10-11
PEAK WIND GUSTS (MPH) 19 19 20 19
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 4200 3400
MAX MIXING HGT (FT) 4800 3900
TRANSPORT WND (MPH) NE 14 E 17
VENT RATE (MPH-FT) 72000 66300
VENT RATE CATEGORY FAIR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. HIGHS IN THE
MID 60S. EAST WINDS AROUND 15 MPH.
FRIDAY NIGHT
CLOUDY. SHOWERS LIKELY, MAINLY IN THE EVENING.
LOWS IN THE LOWER 50S. NORTHEAST WINDS 10 TO 15 MPH.
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 70S. NORTH WINDS
AROUND 5 MPH, BECOMING WEST IN THE AFTERNOON.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 50S. EAST WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SUNDAY
PARTLY SUNNY. HIGHS IN THE MID 70S. SOUTH WINDS AROUND
5 MPH, BECOMING WEST IN THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 50S. NORTH WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
MONDAY
PARTLY SUNNY. HIGHS AROUND 80. SOUTHEAST WINDS AROUND
5 MPH.
MONDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. SOUTHEAST
WINDS AROUND 5 MPH.
TUESDAY
PARTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHEAST WINDS
5 TO 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 60. SOUTHEAST WINDS
AROUND 5 MPH.
ILZ005-202130-
MCHENRY-
INCLUDING THE CITIES OF CRYSTAL LAKE, ALGONQUIN, MCHENRY,
AND WOODSTOCK
419 AM CDT WED MAY 20 2026
TODAY TONIGHT THU THU NIGHT
CLOUD COVER PCLDY MCLEAR PCLDY MCLDY
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 10
MAX TEMP (24HR TREND) 61 (-15) 60
MIN RH % (24HR TREND) 47 (-15) 42
MIN TEMP (24HR TREND) 40 (-7) 45
MAX RH % (24HR TREND) 87 (+6) 85
20FT WIND AM (MPH) N 9-11 E 12
20FT WIND PM (MPH) NE 9-11 NE 9-10 E 12 NE 10
PEAK WIND GUSTS (MPH) 17 18 19 18
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 4300 3000
MAX MIXING HGT (FT) 4900 3400
TRANSPORT WND (MPH) NE 12 E 16
VENT RATE (MPH-FT) 63700 54400
VENT RATE CATEGORY FAIR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS IN THE LOWER 60S. EAST WINDS AROUND 15 MPH.
FRIDAY NIGHT
CLOUDY WITH SHOWERS LIKELY. LOWS IN THE LOWER
50S. NORTHEAST WINDS 10 TO 15 MPH.
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 70S. NORTHEAST
WINDS AROUND 5 MPH, BECOMING WEST IN THE AFTERNOON.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. EAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SUNDAY
PARTLY SUNNY. HIGHS IN THE MID 70S. WEST WINDS AROUND
5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. LIGHT WINDS.
MONDAY
PARTLY SUNNY. HIGHS IN THE UPPER 70S. SOUTHEAST WINDS
AROUND 5 MPH.
MONDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. SOUTHEAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
TUESDAY
PARTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHEAST WINDS
5 TO 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 50S. SOUTHEAST
WINDS AROUND 5 MPH.
ILZ004-202130-
BOONE-
INCLUDING THE CITY OF BELVIDERE
419 AM CDT WED MAY 20 2026
TODAY TONIGHT THU THU NIGHT
CLOUD COVER PCLDY MCLEAR PCLDY MCLDY
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 10
MAX TEMP (24HR TREND) 63 (-13) 62
MIN RH % (24HR TREND) 43 (-21) 41
MIN TEMP (24HR TREND) 40 (-6) 45
MAX RH % (24HR TREND) 80 (0) 83
20FT WIND AM (MPH) N 9 E 12
20FT WIND PM (MPH) NE 9 NE 9-10 E 12 E 10
PEAK WIND GUSTS (MPH) 16 18 19 18
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 4300 3100
MAX MIXING HGT (FT) 5400 3700
TRANSPORT WND (MPH) NE 10 E 17
VENT RATE (MPH-FT) 54000 62900
VENT RATE CATEGORY FAIR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS IN THE MID 60S. EAST WINDS AROUND 15 MPH.
FRIDAY NIGHT
CLOUDY WITH SHOWERS LIKELY. LOWS IN THE LOWER
50S. NORTHEAST WINDS 10 TO 15 MPH.
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 70S. NORTHEAST
WINDS AROUND 5 MPH, BECOMING WEST IN THE AFTERNOON.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SUNDAY
PARTLY SUNNY. HIGHS IN THE MID 70S. WEST WINDS AROUND
5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. LIGHT
WINDS.
MONDAY
PARTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHEAST WINDS
AROUND 5 MPH.
MONDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. SOUTHEAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
TUESDAY
PARTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHEAST WINDS
5 TO 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 50S. SOUTHEAST
WINDS AROUND 5 MPH.
ILZ011-202130-
DE KALB-
INCLUDING THE CITIES OF DEKALB AND SYCAMORE
419 AM CDT WED MAY 20 2026
TODAY TONIGHT THU THU NIGHT
CLOUD COVER PCLDY MCLEAR PCLDY MCLDY
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 10
MAX TEMP (24HR TREND) 63 (-13) 65
MIN RH % (24HR TREND) 44 (-20) 39
MIN TEMP (24HR TREND) 41 (-7) 46
MAX RH % (24HR TREND) 82 (+2) 82
20FT WIND AM (MPH) N 10-11 E 10-15
20FT WIND PM (MPH) NE 10-11 NE 10-11 E 10-15 NE 10-11
PEAK WIND GUSTS (MPH) 18 19 20 20
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 4200 3500
MAX MIXING HGT (FT) 5100 4400
TRANSPORT WND (MPH) NE 12 E 17
VENT RATE (MPH-FT) 66300 74800
VENT RATE CATEGORY FAIR GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. HIGHS IN THE
MID 60S. EAST WINDS AROUND 15 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. SHOWERS LIKELY, MAINLY IN THE
EVENING. LOWS IN THE LOWER 50S. NORTHEAST WINDS 10 TO 15 MPH.
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 70S. NORTH WINDS
AROUND 5 MPH, BECOMING WEST IN THE AFTERNOON.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SUNDAY
PARTLY SUNNY. HIGHS IN THE UPPER 70S. SOUTHEAST WINDS
AROUND 5 MPH, BECOMING WEST IN THE AFTERNOON.
SUNDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE MID 50S. NORTHWEST WINDS AROUND 5 MPH
IN THE EVENING, BECOMING LIGHT.
MONDAY
PARTLY SUNNY. HIGHS AROUND 80. EAST WINDS AROUND 5 MPH.
MONDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. SOUTHEAST
WINDS AROUND 5 MPH.
TUESDAY
PARTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHEAST WINDS
5 TO 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 50S. SOUTHEAST
WINDS AROUND 5 MPH.
ILZ003-202130-
WINNEBAGO-
INCLUDING THE CITY OF ROCKFORD
419 AM CDT WED MAY 20 2026
TODAY TONIGHT THU THU NIGHT
CLOUD COVER PCLDY PCLDY PCLDY MCLDY
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 10
MAX TEMP (24HR TREND) 64 (-9) 63
MIN RH % (24HR TREND) 40 (-30) 38
MIN TEMP (24HR TREND) 41 (-5) 46
MAX RH % (24HR TREND) 75 (-6) 81
20FT WIND AM (MPH) N 9 E 11-12
20FT WIND PM (MPH) NE 9 E 8-9 E 11-12 E 9-10
PEAK WIND GUSTS (MPH) 15 18 19 18
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 4400 3200
MAX MIXING HGT (FT) 5500 3800
TRANSPORT WND (MPH) NE 10 E 17
VENT RATE (MPH-FT) 55000 64600
VENT RATE CATEGORY FAIR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS IN THE MID 60S. EAST WINDS AROUND 15 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY WITH SHOWERS LIKELY. LOWS IN THE
LOWER 50S. NORTHEAST WINDS 10 TO 15 MPH.
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 70S. NORTHEAST
WINDS AROUND 5 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SUNDAY
MOSTLY CLOUDY IN THE MORNING, THEN BECOMING MOSTLY
SUNNY. HIGHS IN THE UPPER 70S. WEST WINDS AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. LIGHT
WINDS.
MONDAY
PARTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHEAST WINDS
AROUND 5 MPH.
MONDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. SOUTHEAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
TUESDAY
MOSTLY SUNNY. HIGHS IN THE MID 80S. SOUTHEAST WINDS
5 TO 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 50S. SOUTHEAST
WINDS AROUND 5 MPH.
ILZ008-202130-
OGLE-
INCLUDING THE CITIES OF ROCHELLE, OREGON, AND BYRON
419 AM CDT WED MAY 20 2026
TODAY TONIGHT THU THU NIGHT
CLOUD COVER PCLDY MCLEAR PCLDY MCLDY
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 10
MAX TEMP (24HR TREND) 65 (-9) 65
MIN RH % (24HR TREND) 40 (-29) 38
MIN TEMP (24HR TREND) 41 (-5) 46
MAX RH % (24HR TREND) 75 (-6) 81
20FT WIND AM (MPH) N 9 E 11-12
20FT WIND PM (MPH) NE 9 NE 9-10 E 11-12 E 10-11
PEAK WIND GUSTS (MPH) 16 18 19 18
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 4400 3300
MAX MIXING HGT (FT) 5300 4400
TRANSPORT WND (MPH) NE 11 E 17
VENT RATE (MPH-FT) 63600 74800
VENT RATE CATEGORY FAIR GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS IN THE MID 60S. EAST WINDS AROUND 15 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. SHOWERS LIKELY, MAINLY IN THE
EVENING. LOWS IN THE LOWER 50S. NORTHEAST WINDS 5 TO 10 MPH.
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 70S. NORTHEAST
WINDS AROUND 5 MPH, BECOMING SOUTHWEST IN THE AFTERNOON.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. LIGHT
WINDS.
SUNDAY
PARTLY SUNNY. HIGHS IN THE UPPER 70S. NORTH WINDS
AROUND 5 MPH, BECOMING WEST IN THE AFTERNOON.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. LIGHT WINDS.
MONDAY
PARTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHEAST WINDS
AROUND 5 MPH.
MONDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. SOUTHEAST
WINDS AROUND 5 MPH.
TUESDAY
PARTLY SUNNY. HIGHS IN THE MID 80S. SOUTHEAST WINDS
5 TO 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 60. SOUTHEAST WINDS
AROUND 5 MPH.
ILZ010-202130-
LEE-
INCLUDING THE CITY OF DIXON
419 AM CDT WED MAY 20 2026
TODAY TONIGHT THU THU NIGHT
CLOUD COVER PCLDY MCLEAR PCLDY MCLDY
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 10
MAX TEMP (24HR TREND) 65 (-10) 66
MIN RH % (24HR TREND) 41 (-26) 39
MIN TEMP (24HR TREND) 42 (-5) 47
MAX RH % (24HR TREND) 75 (-6) 79
20FT WIND AM (MPH) N 9-10 E 11-12
20FT WIND PM (MPH) NE 9-10 NE 9-10 E 11-12 E 11-12
PEAK WIND GUSTS (MPH) 17 18 20 20
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 4300 3400
MAX MIXING HGT (FT) 5200 4700
TRANSPORT WND (MPH) NE 12 E 18
VENT RATE (MPH-FT) 67600 84600
VENT RATE CATEGORY FAIR GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. HIGHS IN THE
MID 60S. EAST WINDS AROUND 15 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. SHOWERS LIKELY IN THE EVENING.
LOWS IN THE LOWER 50S. NORTHEAST WINDS 5 TO 10 MPH.
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 70S. NORTHEAST
WINDS AROUND 5 MPH, BECOMING SOUTHWEST IN THE AFTERNOON.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 50S. WEST WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SUNDAY
PARTLY SUNNY. HIGHS IN THE UPPER 70S. NORTH WINDS
AROUND 5 MPH, BECOMING WEST IN THE AFTERNOON.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. NORTH WINDS
AROUND 5 MPH, BECOMING EAST AFTER MIDNIGHT.
MONDAY
PARTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHEAST WINDS
AROUND 5 MPH.
MONDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. SOUTHEAST
WINDS AROUND 5 MPH.
TUESDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHEAST WINDS
5 TO 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 60. SOUTHEAST WINDS
AROUND 5 MPH.
ILZ019-202130-
LA SALLE-
INCLUDING THE CITIES OF OTTAWA, STREATOR, LA SALLE, MENDOTA,
AND MARSEILLES
419 AM CDT WED MAY 20 2026
TODAY TONIGHT THU THU NIGHT
CLOUD COVER PCLDY MCLEAR PCLDY MCLDY
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 10
MAX TEMP (24HR TREND) 65 (-11) 68
MIN RH % (24HR TREND) 42 (-25) 38
MIN TEMP (24HR TREND) 44 (-6) 49
MAX RH % (24HR TREND) 77 (-2) 71
20FT WIND AM (MPH) NE 10 E 10-15
20FT WIND PM (MPH) NE 10 NE 9-10 E 10-15 NE 10-12
PEAK WIND GUSTS (MPH) 19 19 21 21
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 3900 3500
MAX MIXING HGT (FT) 5300 4600
TRANSPORT WND (MPH) NE 13 E 17
VENT RATE (MPH-FT) 74200 78200
VENT RATE CATEGORY GOOD GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE MORNING, THEN
SHOWERS LIKELY IN THE AFTERNOON. HIGHS IN THE MID 60S. EAST WINDS
AROUND 15 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. SHOWERS LIKELY IN THE EVENING.
LOWS IN THE MID 50S. NORTHEAST WINDS 5 TO 10 MPH.
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE MID 70S. NORTH WINDS
AROUND 5 MPH, BECOMING WEST IN THE AFTERNOON.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 50S. NORTHWEST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SUNDAY
MOSTLY CLOUDY. HIGHS IN THE UPPER 70S. NORTH WINDS
AROUND 5 MPH, BECOMING WEST IN THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 50S. NORTH WINDS
AROUND 5 MPH, BECOMING EAST AFTER MIDNIGHT.
MONDAY
PARTLY SUNNY. HIGHS IN THE LOWER 80S. EAST WINDS AROUND
5 MPH.
MONDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. SOUTHEAST
WINDS AROUND 5 MPH.
TUESDAY
PARTLY SUNNY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS IN THE LOWER 80S. SOUTHEAST WINDS 5 TO 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 60S. SOUTHEAST
WINDS AROUND 5 MPH.
ILZ020-202130-
KENDALL-
INCLUDING THE CITIES OF OSWEGO, YORKVILLE, AND PLANO
419 AM CDT WED MAY 20 2026
TODAY TONIGHT THU THU NIGHT
CLOUD COVER PCLDY MCLEAR PCLDY MCLDY
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 10
MAX TEMP (24HR TREND) 64 (-14) 66
MIN RH % (24HR TREND) 44 (-21) 38
MIN TEMP (24HR TREND) 43 (-7) 48
MAX RH % (24HR TREND) 83 (+4) 76
20FT WIND AM (MPH) NE 10-11 E 10-15
20FT WIND PM (MPH) NE 10-11 NE 9 NE 10-15 NE 9-10
PEAK WIND GUSTS (MPH) 19 19 20 20
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 4000 3500
MAX MIXING HGT (FT) 4900 4200
TRANSPORT WND (MPH) NE 14 NE 17
VENT RATE (MPH-FT) 73500 71400
VENT RATE CATEGORY GOOD GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE MORNING, THEN
SHOWERS LIKELY IN THE AFTERNOON. HIGHS IN THE MID 60S. NORTHEAST
WINDS AROUND 15 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. SHOWERS LIKELY, MAINLY IN THE
EVENING. LOWS IN THE MID 50S. NORTHEAST WINDS 5 TO 10 MPH.
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 70S. NORTH WINDS
AROUND 5 MPH, BECOMING WEST IN THE AFTERNOON.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 50S. NORTH WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SUNDAY
MOSTLY CLOUDY. HIGHS IN THE UPPER 70S. WEST WINDS
AROUND 5 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 50S. NORTH WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
MONDAY
PARTLY SUNNY. HIGHS AROUND 80. EAST WINDS AROUND 5 MPH.
MONDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. SOUTHEAST
WINDS AROUND 5 MPH.
TUESDAY
PARTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHEAST WINDS
5 TO 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 60S. SOUTHEAST
WINDS AROUND 5 MPH.
ILZ021-202130-
GRUNDY-
INCLUDING THE CITIES OF MORRIS, COAL CITY, AND MINOOKA
419 AM CDT WED MAY 20 2026
TODAY TONIGHT THU THU NIGHT
CLOUD COVER PCLDY MCLEAR PCLDY MCLDY
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 10
MAX TEMP (24HR TREND) 65 (-13) 68
MIN RH % (24HR TREND) 43 (-22) 39
MIN TEMP (24HR TREND) 45 (-6) 49
MAX RH % (24HR TREND) 86 (+8) 74
20FT WIND AM (MPH) NE 10-12 E 10-15
20FT WIND PM (MPH) NE 10-12 NE 8-10 E 10-15 NE 9-11
PEAK WIND GUSTS (MPH) 19 19 20 20
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 3800 3600
MAX MIXING HGT (FT) 4900 4400
TRANSPORT WND (MPH) NE 14 E 17
VENT RATE (MPH-FT) 73500 74800
VENT RATE CATEGORY GOOD GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE MORNING, THEN
SHOWERS LIKELY IN THE AFTERNOON. HIGHS IN THE UPPER 60S. EAST
WINDS 10 TO 15 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. SHOWERS LIKELY IN THE EVENING.
LOWS IN THE MID 50S. NORTHEAST WINDS 5 TO 10 MPH.
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE MID 70S. NORTH WINDS
AROUND 5 MPH, BECOMING WEST IN THE AFTERNOON.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 50S. LIGHT
WINDS.
SUNDAY
MOSTLY CLOUDY. HIGHS IN THE UPPER 70S. LIGHT WINDS,
BECOMING WEST AROUND 5 MPH IN THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 50S. NORTH WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
MONDAY
PARTLY SUNNY. HIGHS IN THE LOWER 80S. EAST WINDS AROUND
5 MPH.
MONDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. SOUTHEAST
WINDS AROUND 5 MPH.
TUESDAY
PARTLY SUNNY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS IN THE MID 80S. SOUTHEAST WINDS 5 TO 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS AFTER
MIDNIGHT. LOWS IN THE LOWER 60S. SOUTHEAST WINDS AROUND 5 MPH.
ILZ022-202130-
WILL-
INCLUDING THE CITIES OF JOLIET, BOLINGBROOK, AND WILMINGTON
419 AM CDT WED MAY 20 2026
TODAY TONIGHT THU THU NIGHT
CLOUD COVER PCLDY MCLEAR PCLDY MCLDY
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 10
MAX TEMP (24HR TREND) 62 (-17) 66
MIN RH % (24HR TREND) 45 (-18) 40
MIN TEMP (24HR TREND) 44 (-8) 48
MAX RH % (24HR TREND) 87 (+12) 76
20FT WIND AM (MPH) NE 10-15 E 10-15
20FT WIND PM (MPH) NE 10-15 NE 9-10 NE 10-15 NE 9-10
PEAK WIND GUSTS (MPH) 21 21 21 20
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 3900 3500
MAX MIXING HGT (FT) 4400 4200
TRANSPORT WND (MPH) NE 16 NE 17
VENT RATE (MPH-FT) 70400 71400
VENT RATE CATEGORY FAIR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE MORNING, THEN
SHOWERS LIKELY IN THE AFTERNOON. HIGHS IN THE UPPER 60S. EAST
WINDS 10 TO 15 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. SHOWERS LIKELY, MAINLY IN THE
EVENING. LOWS IN THE MID 50S. NORTHEAST WINDS 5 TO 10 MPH.
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE MID 70S. NORTH WINDS
AROUND 5 MPH, BECOMING WEST IN THE AFTERNOON.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 50S. NORTHWEST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SUNDAY
MOSTLY CLOUDY. HIGHS IN THE UPPER 70S. NORTHEAST WINDS
AROUND 5 MPH, BECOMING WEST IN THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 50S. NORTH WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
MONDAY
PARTLY SUNNY. HIGHS IN THE UPPER 70S. EAST WINDS AROUND
5 MPH.
MONDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE UPPER 50S. SOUTHEAST WINDS AROUND
5 MPH.
TUESDAY
PARTLY SUNNY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS IN THE LOWER 80S. SOUTHEAST WINDS 5 TO 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 60S. SOUTHEAST
WINDS AROUND 5 MPH.
ILZ032-202130-
LIVINGSTON-
INCLUDING THE CITIES OF PONTIAC, DWIGHT, AND FAIRBURY
419 AM CDT WED MAY 20 2026
TODAY TONIGHT THU THU NIGHT
CLOUD COVER PCLDY MCLEAR PCLDY MCLDY
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 10
MAX TEMP (24HR TREND) 66 (-12) 69
MIN RH % (24HR TREND) 44 (-28) 39
MIN TEMP (24HR TREND) 45 (-7) 50
MAX RH % (24HR TREND) 84 (+2) 73
20FT WIND AM (MPH) NE 11-12 E 10-15
20FT WIND PM (MPH) NE 11-12 NE 9-12 NE 10-15 NE 10-12
PEAK WIND GUSTS (MPH) 19 20 20 21
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 3500 3600
MAX MIXING HGT (FT) 4900 4700
TRANSPORT WND (MPH) NE 14 E 19
VENT RATE (MPH-FT) 73500 94000
VENT RATE CATEGORY GOOD GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE MORNING, THEN
SHOWERS LIKELY IN THE AFTERNOON. HIGHS IN THE UPPER 60S. EAST
WINDS 10 TO 15 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. SHOWERS LIKELY IN THE EVENING.
LOWS IN THE MID 50S. NORTHEAST WINDS 5 TO 10 MPH.
SATURDAY
PARTLY SUNNY. HIGHS IN THE MID 70S. WEST WINDS AROUND
5 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 50S. LIGHT
WINDS.
SUNDAY
MOSTLY CLOUDY. HIGHS IN THE UPPER 70S. NORTHEAST WINDS
AROUND 5 MPH, BECOMING WEST IN THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 50S. NORTH WINDS
AROUND 5 MPH, BECOMING EAST AFTER MIDNIGHT.
MONDAY
PARTLY SUNNY. HIGHS IN THE LOWER 80S. EAST WINDS AROUND
5 MPH.
MONDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 60. SOUTHEAST WINDS
AROUND 5 MPH.
TUESDAY
PARTLY SUNNY. A CHANCE OF SHOWERS AND THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE MID 80S. SOUTHEAST WINDS 5 TO 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS AFTER
MIDNIGHT. LOWS IN THE LOWER 60S. SOUTHEAST WINDS AROUND 5 MPH.
ILZ023-202130-
KANKAKEE-
INCLUDING THE CITIES OF KANKAKEE, BOURBONNAIS, AND BRADLEY
419 AM CDT WED MAY 20 2026
TODAY TONIGHT THU THU NIGHT
CLOUD COVER PCLDY PCLDY PCLDY MCLDY
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 10
MAX TEMP (24HR TREND) 63 (-17) 67
MIN RH % (24HR TREND) 46 (-14) 39
MIN TEMP (24HR TREND) 44 (-10) 48
MAX RH % (24HR TREND) 89 (+13) 75
20FT WIND AM (MPH) N 10-15 E 10-15
20FT WIND PM (MPH) NE 10-15 NE 8-10 NE 10-15 NE 9-10
PEAK WIND GUSTS (MPH) 21 21 19 18
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 3600 3600
MAX MIXING HGT (FT) 4200 4300
TRANSPORT WND (MPH) NE 16 NE 19
VENT RATE (MPH-FT) 67200 86000
VENT RATE CATEGORY FAIR GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE MORNING, THEN
SHOWERS LIKELY IN THE AFTERNOON. HIGHS IN THE UPPER 60S. EAST
WINDS AROUND 10 MPH.
FRIDAY NIGHT
CLOUDY. SHOWERS LIKELY, MAINLY IN THE EVENING.
LOWS IN THE MID 50S. NORTHEAST WINDS 5 TO 10 MPH.
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE MID 70S. WEST WINDS
AROUND 5 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 50S. LIGHT
WINDS.
SUNDAY
MOSTLY CLOUDY. HIGHS IN THE UPPER 70S. LIGHT WINDS,
BECOMING WEST AROUND 5 MPH IN THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 50S. NORTH WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
MONDAY
PARTLY SUNNY. HIGHS IN THE UPPER 70S. EAST WINDS AROUND
5 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 50S. EAST WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
TUESDAY
PARTLY SUNNY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS IN THE LOWER 80S. SOUTHEAST WINDS AROUND 5 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 60S. SOUTHEAST
WINDS AROUND 5 MPH.
ILZ039-202130-
FORD-
INCLUDING THE CITIES OF PAXTON AND GIBSON CITY
419 AM CDT WED MAY 20 2026
TODAY TONIGHT THU THU NIGHT
CLOUD COVER PCLDY PCLDY PCLDY MCLDY
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 10 10
MAX TEMP (24HR TREND) 65 (-15) 69
MIN RH % (24HR TREND) 46 (-22) 38
MIN TEMP (24HR TREND) 45 (-9) 50
MAX RH % (24HR TREND) 83 (+3) 73
20FT WIND AM (MPH) NE 10-15 E 10-15
20FT WIND PM (MPH) NE 10-15 NE 9-12 E 10-15 NE 10-11
PEAK WIND GUSTS (MPH) 20 20 19 18
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 3400 3500
MAX MIXING HGT (FT) 4300 4500
TRANSPORT WND (MPH) NE 16 E 19
VENT RATE (MPH-FT) 68800 90000
VENT RATE CATEGORY GOOD GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
A CHANCE OF SHOWERS IN THE MORNING, THEN SHOWERS IN THE
AFTERNOON. HIGHS IN THE UPPER 60S. EAST WINDS AROUND 10 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. SHOWERS LIKELY IN THE EVENING.
LOWS IN THE UPPER 50S. NORTHEAST WINDS 5 TO 10 MPH.
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE MID 70S. WEST WINDS 5 TO
10 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 50S. SOUTHWEST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SUNDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE MORNING.
HIGHS IN THE UPPER 70S. EAST WINDS AROUND 5 MPH, BECOMING WEST IN
THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 50S. NORTH WINDS
AROUND 5 MPH, BECOMING NORTHEAST AFTER MIDNIGHT.
MONDAY
PARTLY SUNNY. HIGHS AROUND 80. EAST WINDS AROUND 5 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 60. SOUTHEAST WINDS
AROUND 5 MPH.
TUESDAY
PARTLY SUNNY. A CHANCE OF SHOWERS AND THUNDERSTORMS IN
THE AFTERNOON. HIGHS IN THE LOWER 80S. SOUTHEAST WINDS 5 TO
10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 60S. SOUTHEAST
WINDS AROUND 5 MPH.
ILZ033-202130-
IROQUOIS-
INCLUDING THE CITIES OF WATSEKA AND GILMAN
419 AM CDT WED MAY 20 2026
TODAY TONIGHT THU THU NIGHT
CLOUD COVER MCLDY PCLDY PCLDY MCLDY
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 10 10
MAX TEMP (24HR TREND) 64 (-17) 69
MIN RH % (24HR TREND) 46 (-21) 36
MIN TEMP (24HR TREND) 45 (-10) 49
MAX RH % (24HR TREND) 83 (+4) 71
20FT WIND AM (MPH) N 10-15 E 12
20FT WIND PM (MPH) NE 10-15 NE 8-11 NE 12 NE 9-11
PEAK WIND GUSTS (MPH) 20 20 19 18
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 3400 3400
MAX MIXING HGT (FT) 4100 4600
TRANSPORT WND (MPH) NE 16 E 19
VENT RATE (MPH-FT) 65600 92000
VENT RATE CATEGORY FAIR GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
A CHANCE OF SHOWERS IN THE MORNING, THEN SHOWERS IN THE
AFTERNOON. HIGHS IN THE UPPER 60S. EAST WINDS AROUND 10 MPH.
FRIDAY NIGHT
SHOWERS LIKELY IN THE EVENING. CLOUDY. LOWS IN
THE UPPER 50S. NORTHEAST WINDS AROUND 5 MPH.
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE MID 70S. WEST WINDS
AROUND 5 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 50S. LIGHT
WINDS.
SUNDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE MORNING.
HIGHS IN THE UPPER 70S. LIGHT WINDS, BECOMING WEST AROUND 5 MPH
IN THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 50S. LIGHT
WINDS.
MONDAY
PARTLY SUNNY. HIGHS AROUND 80. EAST WINDS AROUND 5 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 50S. LIGHT
WINDS.
TUESDAY
PARTLY SUNNY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS IN THE LOWER 80S. SOUTHEAST WINDS AROUND 5 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 60S. SOUTHEAST
WINDS AROUND 5 MPH.
INZ010-202130-
NEWTON-
INCLUDING THE CITIES OF ROSELAWN, KENTLAND, AND MOROCCO
419 AM CDT WED MAY 20 2026
TODAY TONIGHT THU THU NIGHT
CLOUD COVER MCLDY PCLDY PCLDY MCLDY
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 10 10
MAX TEMP (24HR TREND) 62 (-19) 68
MIN RH % (24HR TREND) 50 (-5) 37
MIN TEMP (24HR TREND) 44 (-10) 49
MAX RH % (24HR TREND) 87 (+6) 73
20FT WIND AM (MPH) N 10-15 E 12
20FT WIND PM (MPH) N 10-15 N 8-10 NE 12 E 10-11
PEAK WIND GUSTS (MPH) 20 20 19 17
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 3200 3200
MAX MIXING HGT (FT) 3900 4600
TRANSPORT WND (MPH) N 14 NE 18
VENT RATE (MPH-FT) 58500 82800
VENT RATE CATEGORY FAIR GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE MORNING, THEN
SHOWERS LIKELY IN THE AFTERNOON. HIGHS IN THE UPPER 60S. EAST
WINDS AROUND 10 MPH.
FRIDAY NIGHT
CLOUDY. SHOWERS LIKELY, MAINLY IN THE EVENING.
LOWS IN THE UPPER 50S. EAST WINDS 5 TO 10 MPH.
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE MID 70S. WEST WINDS
AROUND 5 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 50S. LIGHT
WINDS.
SUNDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE MORNING.
HIGHS IN THE UPPER 70S. LIGHT WINDS, BECOMING WEST AROUND 5 MPH
IN THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 50S. LIGHT WINDS.
MONDAY
PARTLY SUNNY. HIGHS IN THE UPPER 70S. EAST WINDS AROUND
5 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 50S. LIGHT
WINDS.
TUESDAY
PARTLY SUNNY WITH A CHANCE OF SHOWERS. HIGHS IN THE
LOWER 80S. SOUTHEAST WINDS AROUND 5 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 60S. SOUTHEAST
WINDS AROUND 5 MPH.
INZ011-202130-
JASPER-
INCLUDING THE CITIES OF RENSSELAER AND DEMOTTE
419 AM CDT WED MAY 20 2026
TODAY TONIGHT THU THU NIGHT
CLOUD COVER MCLDY PCLDY PCLDY MCLDY
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 10 10
MAX TEMP (24HR TREND) 63 (-19) 67
MIN RH % (24HR TREND) 52 (+2) 37
MIN TEMP (24HR TREND) 45 (-9) 49
MAX RH % (24HR TREND) 90 (+11) 74
20FT WIND AM (MPH) N 10-15 E 12
20FT WIND PM (MPH) N 10-15 N 8-9 E 12 E 10-11
PEAK WIND GUSTS (MPH) 20 19 19 17
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 3300 3200
MAX MIXING HGT (FT) 4000 4600
TRANSPORT WND (MPH) N 16 E 18
VENT RATE (MPH-FT) 64000 82800
VENT RATE CATEGORY FAIR GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE MORNING, THEN
SHOWERS LIKELY IN THE AFTERNOON. HIGHS IN THE UPPER 60S. EAST
WINDS AROUND 10 MPH.
FRIDAY NIGHT
CLOUDY. SHOWERS LIKELY, MAINLY IN THE EVENING.
LOWS IN THE UPPER 50S. EAST WINDS 5 TO 10 MPH.
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE MID 70S. WEST WINDS 5 TO
10 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 50S. LIGHT
WINDS.
SUNDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE MORNING.
HIGHS IN THE UPPER 70S. LIGHT WINDS, BECOMING WEST AROUND 5 MPH
IN THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS AFTER
MIDNIGHT. LOWS IN THE UPPER 50S. LIGHT WINDS.
MONDAY
PARTLY SUNNY. A CHANCE OF SHOWERS IN THE MORNING. HIGHS
IN THE UPPER 70S. EAST WINDS AROUND 5 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 50S. EAST WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
TUESDAY
PARTLY SUNNY WITH A CHANCE OF SHOWERS. HIGHS IN THE
LOWER 80S. SOUTHEAST WINDS AROUND 5 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE
EVENING. LOWS IN THE LOWER 60S. SOUTHEAST WINDS AROUND 5 MPH.
INZ019-202130-
BENTON-
INCLUDING THE CITIES OF FOWLER AND OXFORD
519 AM EDT WED MAY 20 2026
TODAY TONIGHT THU THU NIGHT
CLOUD COVER MCLDY PCLDY PCLDY MCLDY
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 10 10
MAX TEMP (24HR TREND) 64 (-18) 68
MIN RH % (24HR TREND) 50 (-10) 38
MIN TEMP (24HR TREND) 46 (-10) 50
MAX RH % (24HR TREND) 83 (0) 74
20FT WIND AM (MPH) N 10-15 E 10-15
20FT WIND PM (MPH) N 10-15 N 8-11 E 10-15 E 10-11
PEAK WIND GUSTS (MPH) 19 19 20 18
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 2900 3100
MAX MIXING HGT (FT) 4000 4300
TRANSPORT WND (MPH) N 16 E 18
VENT RATE (MPH-FT) 64000 77400
VENT RATE CATEGORY FAIR GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
FRIDAY
A CHANCE OF SHOWERS IN THE MORNING, THEN SHOWERS IN THE
AFTERNOON. HIGHS IN THE UPPER 60S. EAST WINDS AROUND 10 MPH.
FRIDAY NIGHT
CLOUDY. SHOWERS LIKELY AND A CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN A CHANCE OF SHOWERS AFTER
MIDNIGHT. LOWS IN THE UPPER 50S. EAST WINDS 5 TO 10 MPH.
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE MID 70S. WEST WINDS
AROUND 5 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 50S. LIGHT
WINDS.
SUNDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. HIGHS IN THE
UPPER 70S. LIGHT WINDS, BECOMING SOUTHWEST AROUND 5 MPH IN THE
AFTERNOON.
SUNDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS AFTER
MIDNIGHT. LOWS IN THE UPPER 50S. LIGHT WINDS.
MONDAY
PARTLY SUNNY. A CHANCE OF SHOWERS IN THE MORNING. HIGHS
IN THE UPPER 70S. EAST WINDS AROUND 5 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 60. LIGHT WINDS.
TUESDAY
PARTLY SUNNY WITH A CHANCE OF SHOWERS. HIGHS IN THE
LOWER 80S. SOUTHEAST WINDS AROUND 5 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 60S. SOUTHEAST
WINDS AROUND 5 MPH.
RATZER
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