454
FNUS53 KLOT 210857
FWFLOT
FIRE WEATHER PLANNING FORECAST FOR NORTHERN IL AND NORTHWEST IN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
357 AM CDT THU MAY 21 2026
DISCUSSION
MAINLY DRY, COOL AND BREEZY CONDITIONS WILL CONTINUE TODAY INTO
FRIDAY MORNING. ONSHORE WINDS OFF OF LAKE MICHIGAN WITH GUSTS 20
TO 25 MPH AT TIMES WILL LIMIT TEMPERATURES TO THE 50S NEAR THE
SHORE AND WILL KEEP MIXING HEIGHTS BELOW 1000 FEET. FARTHER
INLAND, TEMPERATURES WILL REACH THE LOWER AND MIDDLE 60S TODAY IN
MOST AREAS, AND MAY TAG 70 IN SPOTS SOUTH OF I-80. FRIDAY WILL SEE
SIMILAR CONDITIONS INITIALLY, THROUGH WITH INCREASING CLOUD COVER
AREAWIDE AND A CHANCE OF SHOWERS IN THE AFTERNOON, ESPECIALLY
ALONG AND SOUTH OF I-80. RAIN CHANCES WILL INCREASE FRIDAY NIGHT
ESPECIALLY SOUTHEAST OF THE I-55 CORRIDOR, BEFORE ENDING SATURDAY
MORNING.
A GRADUAL WARMING TREND IS THEN EXPECTED SATURDAY THROUGH THE
HOLIDAY WEEKEND, WITH DAYTIME TEMPERATURES RISING BACK INTO THE
70S IN MOST AREAS THROUGH SUNDAY AND LOW 80S POSSIBLE MONDAY. LAKE
BREEZES EACH DAY WILL LIMIT TEMPERATURES TO THE 60S HOWEVER NEAR
THE LAKE MICHIGAN SHORE. SPOTTY RAIN CHANCES WILL LINGER THROUGH
THE WEEKEND, THOUGH MANY DRY HOURS ARE EXPECTED.
ILZ014-212115-
COOK-
INCLUDING THE CITIES OF CHICAGO, SCHAUMBURG, EVANSTON, OAK LAWN,
LEMONT, ORLAND PARK, AND PARK FOREST
357 AM CDT THU MAY 21 2026
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER PCLDY PCLDY MCLDY CLOUDY
PRECIP TYPE NONE NONE SHOWERS SHOWERS
CHANCE PRECIP (%) 30 60
MAX TEMP (24HR TREND) 63 (+3) 69
MIN RH % (24HR TREND) 41 (-5) 50
MIN TEMP (24HR TREND) 47 (+1) 52
MAX RH % (24HR TREND) 78 (+2) 100
20FT WIND AM (MPH) E 10-15 E 10-15
20FT WIND PM (MPH) NE 10-15 NE 9-11 NE 10-15 E 9-12
PEAK WIND GUSTS (MPH) 26 25 23 23
PRECIP AMOUNT (IN) 0.00 0.00 0.01-0.05 0.25-0.50
11 AM MIXING HGT (FT) 3200 1800
MAX MIXING HGT (FT) 3700 2200
TRANSPORT WND (MPH) NE 16 NE 19
VENT RATE (MPH-FT) 59200 44000
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. HIGHS AROUND 70. NORTH WINDS AROUND
10 MPH, BECOMING NORTHWEST 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. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS IN THE UPPER 70S. SOUTHEAST WINDS AROUND 5 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE UPPER 50S. NORTH WINDS AROUND 5 MPH IN
THE EVENING, BECOMING LIGHT.
MONDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 70S. NORTHEAST WINDS
AROUND 5 MPH.
MONDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. EAST WINDS
AROUND 5 MPH.
TUESDAY
PARTLY SUNNY. HIGHS AROUND 80. EAST WINDS 5 TO 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS AFTER
MIDNIGHT. LOWS IN THE LOWER 60S. EAST WINDS AROUND 5 MPH.
WEDNESDAY
PARTLY SUNNY. HIGHS AROUND 80. EAST WINDS 5 TO
10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. A CHANCE OF SHOWERS IN THE
EVENING. LOWS IN THE LOWER 60S. EAST WINDS AROUND 5 MPH.
ILZ006-212115-
LAKE IL-
INCLUDING THE CITIES OF WAUKEGAN, BUFFALO GROVE, MUNDELEIN,
AND GURNEE
357 AM CDT THU MAY 21 2026
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER PCLDY PCLDY MCLDY CLOUDY
PRECIP TYPE NONE NONE SHOWERS SHOWERS
CHANCE PRECIP (%) 10 10 20 60
MAX TEMP (24HR TREND) 58 (-1) 63
MIN RH % (24HR TREND) 44 (+1) 53
MIN TEMP (24HR TREND) 45 (+2) 49
MAX RH % (24HR TREND) 84 (+9) 100
20FT WIND AM (MPH) E 10-15 E 10-15
20FT WIND PM (MPH) NE 10-15 NE 9-10 NE 10-15 E 9-12
PEAK WIND GUSTS (MPH) 26 20 24 24
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.25-0.50
11 AM MIXING HGT (FT) 2500 1700
MAX MIXING HGT (FT) 3000 2000
TRANSPORT WND (MPH) NE 17 E 19
VENT RATE (MPH-FT) 51000 40000
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE UPPER 60S. NORTH WINDS
AROUND 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 MID 70S. SOUTHEAST WINDS
AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. LIGHT WINDS.
MONDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S. NORTHEAST WINDS
AROUND 5 MPH.
MONDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. EAST WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
TUESDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 70S. EAST WINDS 5 TO
10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 50S. EAST WINDS
AROUND 5 MPH.
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE UPPER 70S. EAST WINDS
5 TO 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 60. EAST WINDS
AROUND 5 MPH.
INZ001-212115-
LAKE IN-
INCLUDING THE CITIES OF GARY, HAMMOND, AND MERRILLVILLE
357 AM CDT THU MAY 21 2026
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER PCLDY PCLDY MCLDY MCLDY
PRECIP TYPE NONE NONE SHOWERS TSTMS
CHANCE PRECIP (%) 40 70
MAX TEMP (24HR TREND) 66 (+6) 71
MIN RH % (24HR TREND) 41 (-11) 56
MIN TEMP (24HR TREND) 47 (+1) 54
MAX RH % (24HR TREND) 78 (-4) 100
20FT WIND AM (MPH) E 10-15 E 10-12
20FT WIND PM (MPH) NE 10-15 NE 10 E 10-12 E 7-11
PEAK WIND GUSTS (MPH) 26 25 21 21
PRECIP AMOUNT (IN) 0.00 0.00 0.01-0.05 0.25-0.50
11 AM MIXING HGT (FT) 3400 1900
MAX MIXING HGT (FT) 4700 2700
TRANSPORT WND (MPH) NE 17 E 18
VENT RATE (MPH-FT) 79900 48600
VENT RATE CATEGORY FAIR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE UPPER 60S. NORTH WINDS
AROUND 10 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. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS IN THE MID 70S. SOUTH WINDS AROUND 5 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 50S. LIGHT WINDS.
MONDAY
PARTLY SUNNY. HIGHS IN THE UPPER 70S. NORTHEAST WINDS
AROUND 5 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 50S. EAST WINDS
AROUND 5 MPH.
TUESDAY
PARTLY SUNNY. HIGHS AROUND 80. EAST WINDS AROUND
5 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS AFTER
MIDNIGHT. LOWS IN THE LOWER 60S. EAST WINDS AROUND 5 MPH.
WEDNESDAY
PARTLY SUNNY. A CHANCE OF SHOWERS IN THE MORNING.
HIGHS IN THE LOWER 80S. EAST WINDS 5 TO 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. A CHANCE OF SHOWERS IN THE
EVENING. LOWS IN THE LOWER 60S. EAST WINDS AROUND 5 MPH.
INZ002-212115-
PORTER-
INCLUDING THE CITIES OF PORTAGE, VALPARAISO, AND CHESTERTON
357 AM CDT THU MAY 21 2026
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER PCLDY PCLDY PCLDY MCLDY
PRECIP TYPE NONE NONE SHOWERS TSTMS
CHANCE PRECIP (%) 30 80
MAX TEMP (24HR TREND) 66 (+6) 70
MIN RH % (24HR TREND) 39 (-11) 56
MIN TEMP (24HR TREND) 47 (+1) 54
MAX RH % (24HR TREND) 77 (-5) 100
20FT WIND AM (MPH) E 11-12 E 10-12
20FT WIND PM (MPH) NE 11-12 E 9-10 E 10-12 E 8-11
PEAK WIND GUSTS (MPH) 27 20 23 23
PRECIP AMOUNT (IN) 0.00 0.00 0.01-0.05 0.25-0.50
11 AM MIXING HGT (FT) 3400 2000
MAX MIXING HGT (FT) 4800 2700
TRANSPORT WND (MPH) NE 17 E 19
VENT RATE (MPH-FT) 81600 54000
VENT RATE CATEGORY FAIR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE MORNING.
HIGHS IN THE UPPER 60S. NORTH WINDS AROUND 10 MPH, BECOMING WEST
IN THE AFTERNOON.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 50S. LIGHT
WINDS.
SUNDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS IN THE MID 70S. SOUTH WINDS AROUND 5 MPH, BECOMING
SOUTHWEST IN THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 50S. LIGHT WINDS.
MONDAY
PARTLY SUNNY. HIGHS IN THE UPPER 70S. NORTHEAST WINDS
AROUND 5 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 50S. NORTHEAST
WINDS AROUND 5 MPH.
TUESDAY
PARTLY SUNNY. HIGHS AROUND 80. EAST WINDS AROUND
5 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS AFTER
MIDNIGHT. LOWS IN THE LOWER 60S. EAST WINDS AROUND 5 MPH.
WEDNESDAY
PARTLY SUNNY. A CHANCE OF SHOWERS IN THE MORNING.
HIGHS IN THE LOWER 80S. EAST WINDS 5 TO 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 60S. EAST
WINDS AROUND 5 MPH.
ILZ013-212115-
DUPAGE-
INCLUDING THE CITIES OF NAPERVILLE, WHEATON, DOWNERS GROVE,
LOMBARD, AND CAROL STREAM
357 AM CDT THU MAY 21 2026
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER PCLDY PCLDY MCLDY CLOUDY
PRECIP TYPE NONE NONE SHOWERS SHOWERS
CHANCE PRECIP (%) 30 60
MAX TEMP (24HR TREND) 63 (+1) 67
MIN RH % (24HR TREND) 41 (-3) 50
MIN TEMP (24HR TREND) 47 (+1) 52
MAX RH % (24HR TREND) 79 (+6) 100
20FT WIND AM (MPH) E 10-15 E 10-15
20FT WIND PM (MPH) NE 10-15 NE 9-11 NE 10-15 E 9-12
PEAK WIND GUSTS (MPH) 25 19 23 23
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.25-0.50
11 AM MIXING HGT (FT) 3300 1900
MAX MIXING HGT (FT) 4000 2300
TRANSPORT WND (MPH) NE 18 NE 20
VENT RATE (MPH-FT) 72000 48300
VENT RATE CATEGORY FAIR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 70S. NORTH WINDS
AROUND 10 MPH, BECOMING NORTHWEST IN THE AFTERNOON.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 50S. NORTH WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SUNDAY
PARTLY SUNNY. HIGHS IN THE UPPER 70S. SOUTHWEST WINDS
AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. NORTH WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
MONDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. EAST WINDS AROUND
5 MPH.
MONDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. EAST WINDS
AROUND 5 MPH.
TUESDAY
PARTLY SUNNY. HIGHS IN THE LOWER 80S. EAST WINDS 5 TO
10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS AFTER
MIDNIGHT. LOWS IN THE LOWER 60S. EAST WINDS AROUND 5 MPH.
WEDNESDAY
PARTLY SUNNY WITH A CHANCE OF SHOWERS. HIGHS IN THE
MID 80S. EAST WINDS 5 TO 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. A CHANCE OF SHOWERS IN THE
EVENING. LOWS IN THE LOWER 60S. EAST WINDS AROUND 5 MPH.
ILZ012-212115-
KANE-
INCLUDING THE CITIES OF AURORA AND ELGIN
357 AM CDT THU MAY 21 2026
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER PCLDY PCLDY MCLDY CLOUDY
PRECIP TYPE NONE NONE SHOWERS SHOWERS
CHANCE PRECIP (%) 10 20 60
MAX TEMP (24HR TREND) 64 (+1) 68
MIN RH % (24HR TREND) 41 (-5) 52
MIN TEMP (24HR TREND) 46 (+3) 51
MAX RH % (24HR TREND) 84 (+9) 100
20FT WIND AM (MPH) E 10-15 E 10-15
20FT WIND PM (MPH) NE 10-15 NE 9-10 E 10-15 E 9-12
PEAK WIND GUSTS (MPH) 21 19 24 23
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.25-0.50
11 AM MIXING HGT (FT) 3400 1900
MAX MIXING HGT (FT) 4300 2300
TRANSPORT WND (MPH) NE 18 E 20
VENT RATE (MPH-FT) 77400 48300
VENT RATE CATEGORY GOOD POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 70S. NORTH WINDS
AROUND 10 MPH, BECOMING NORTHWEST 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 UPPER 70S. SOUTHWEST WINDS
AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. LIGHT WINDS.
MONDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. EAST WINDS AROUND
5 MPH.
MONDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. EAST WINDS
AROUND 5 MPH.
TUESDAY
PARTLY SUNNY. HIGHS IN THE LOWER 80S. EAST WINDS 5 TO
10 MPH.
TUESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN MOSTLY CLOUDY
WITH A CHANCE OF SHOWERS AFTER MIDNIGHT. LOWS AROUND 60. EAST
WINDS AROUND 5 MPH.
WEDNESDAY
PARTLY SUNNY WITH A CHANCE OF SHOWERS. HIGHS IN THE
MID 80S. SOUTHEAST WINDS AROUND 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 60S. EAST
WINDS 5 TO 10 MPH.
ILZ005-212115-
MCHENRY-
INCLUDING THE CITIES OF CRYSTAL LAKE, ALGONQUIN, MCHENRY,
AND WOODSTOCK
357 AM CDT THU MAY 21 2026
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER PCLDY PCLDY MCLDY CLOUDY
PRECIP TYPE SPRINKLES NONE SHOWERS SHOWERS
CHANCE PRECIP (%) 10 10 20 60
MAX TEMP (24HR TREND) 60 (-1) 64
MIN RH % (24HR TREND) 44 (-2) 55
MIN TEMP (24HR TREND) 44 (+3) 49
MAX RH % (24HR TREND) 86 (+12) 100
20FT WIND AM (MPH) E 12 E 10-15
20FT WIND PM (MPH) E 12 NE 9-10 E 10-15 E 8-12
PEAK WIND GUSTS (MPH) 20 17 25 24
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.25-0.50
11 AM MIXING HGT (FT) 2600 1800
MAX MIXING HGT (FT) 3300 2200
TRANSPORT WND (MPH) E 17 E 20
VENT RATE (MPH-FT) 56100 46200
VENT RATE CATEGORY FAIR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. HIGHS AROUND 70. NORTH WINDS AROUND
10 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. LIGHT
WINDS.
SUNDAY
PARTLY SUNNY. HIGHS IN THE MID 70S. SOUTHWEST WINDS
AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. LIGHT WINDS.
MONDAY
MOSTLY SUNNY. HIGHS AROUND 80. EAST WINDS AROUND 5 MPH.
MONDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. EAST WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
TUESDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. EAST WINDS 5 TO
10 MPH.
TUESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN MOSTLY CLOUDY
WITH A CHANCE OF SHOWERS AFTER MIDNIGHT. LOWS IN THE UPPER 50S.
EAST WINDS AROUND 5 MPH.
WEDNESDAY
PARTLY SUNNY WITH A CHANCE OF SHOWERS. HIGHS IN THE
LOWER 80S. EAST WINDS AROUND 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 60. EAST WINDS
AROUND 5 MPH.
ILZ004-212115-
BOONE-
INCLUDING THE CITY OF BELVIDERE
357 AM CDT THU MAY 21 2026
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER PCLDY PCLDY PCLDY CLOUDY
PRECIP TYPE SPRINKLES NONE SHOWERS SHOWERS
CHANCE PRECIP (%) 10 10 20 50
MAX TEMP (24HR TREND) 61 (-3) 65
MIN RH % (24HR TREND) 43 (+2) 51
MIN TEMP (24HR TREND) 45 (+3) 50
MAX RH % (24HR TREND) 87 (+18) 100
20FT WIND AM (MPH) E 10-15 E 10-15
20FT WIND PM (MPH) E 10-15 E 9-10 E 10-15 E 10-15
PEAK WIND GUSTS (MPH) 20 17 26 26
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.25-0.50
11 AM MIXING HGT (FT) 3000 1800
MAX MIXING HGT (FT) 3700 2400
TRANSPORT WND (MPH) E 17 E 20
VENT RATE (MPH-FT) 62900 50400
VENT RATE CATEGORY FAIR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 70S. NORTHEAST
WINDS AROUND 10 MPH, BECOMING NORTHWEST IN THE AFTERNOON.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. LIGHT
WINDS.
SUNDAY
PARTLY SUNNY. HIGHS IN THE UPPER 70S. SOUTHWEST WINDS
AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. LIGHT
WINDS.
MONDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHEAST WINDS
AROUND 5 MPH.
MONDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. EAST WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
TUESDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHEAST WINDS
5 TO 10 MPH.
TUESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN MOSTLY CLOUDY
WITH A CHANCE OF SHOWERS AFTER MIDNIGHT. LOWS IN THE UPPER 50S.
EAST WINDS AROUND 5 MPH.
WEDNESDAY
PARTLY SUNNY WITH A CHANCE OF SHOWERS. HIGHS IN THE
MID 80S. EAST WINDS AROUND 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 60. EAST WINDS
AROUND 5 MPH.
ILZ011-212115-
DE KALB-
INCLUDING THE CITIES OF DEKALB AND SYCAMORE
357 AM CDT THU MAY 21 2026
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER PCLDY PCLDY MCLDY CLOUDY
PRECIP TYPE NONE NONE SHOWERS SHOWERS
CHANCE PRECIP (%) 10 10 20 50
MAX TEMP (24HR TREND) 65 (0) 67
MIN RH % (24HR TREND) 41 (-3) 52
MIN TEMP (24HR TREND) 45 (+2) 51
MAX RH % (24HR TREND) 85 (+12) 100
20FT WIND AM (MPH) E 10-15 E 10-15
20FT WIND PM (MPH) E 10-15 NE 9-11 E 10-15 E 9-12
PEAK WIND GUSTS (MPH) 21 19 24 23
PRECIP AMOUNT (IN) 0.00 0.00 0.01-0.05 0.25-0.50
11 AM MIXING HGT (FT) 3500 1900
MAX MIXING HGT (FT) 4700 2300
TRANSPORT WND (MPH) E 17 E 20
VENT RATE (MPH-FT) 79900 48300
VENT RATE CATEGORY GOOD POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 70S. NORTH WINDS
AROUND 10 MPH, BECOMING NORTHWEST IN THE AFTERNOON.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. WEST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SUNDAY
PARTLY SUNNY. HIGHS IN THE UPPER 70S. SOUTHWEST WINDS
AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. LIGHT WINDS.
MONDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. EAST WINDS AROUND
5 MPH.
MONDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. EAST WINDS
AROUND 5 MPH.
TUESDAY
PARTLY SUNNY. HIGHS IN THE LOWER 80S. EAST WINDS 5 TO
10 MPH.
TUESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN MOSTLY CLOUDY
WITH A CHANCE OF SHOWERS AFTER MIDNIGHT. LOWS IN THE UPPER 50S.
EAST WINDS AROUND 5 MPH.
WEDNESDAY
MOSTLY SUNNY WITH A CHANCE OF SHOWERS. HIGHS IN THE
MID 80S. SOUTHEAST WINDS AROUND 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 60. EAST WINDS 5 TO
10 MPH.
ILZ003-212115-
WINNEBAGO-
INCLUDING THE CITY OF ROCKFORD
357 AM CDT THU MAY 21 2026
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER PCLDY PCLDY MCLDY CLOUDY
PRECIP TYPE SPRINKLES NONE SHOWERS SHOWERS
CHANCE PRECIP (%) 10 10 20 50
MAX TEMP (24HR TREND) 62 (-4) 66
MIN RH % (24HR TREND) 40 (+1) 49
MIN TEMP (24HR TREND) 45 (+3) 50
MAX RH % (24HR TREND) 85 (+19) 100
20FT WIND AM (MPH) E 11-12 E 10-15
20FT WIND PM (MPH) E 11-12 E 9-10 E 10-15 E 8-12
PEAK WIND GUSTS (MPH) 20 17 24 24
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.25-0.50
11 AM MIXING HGT (FT) 3200 2000
MAX MIXING HGT (FT) 4100 2500
TRANSPORT WND (MPH) E 17 E 20
VENT RATE (MPH-FT) 69700 52500
VENT RATE CATEGORY FAIR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 70S. NORTH WINDS
AROUND 10 MPH, BECOMING NORTHWEST IN THE AFTERNOON.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. WEST
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 CLEAR. LOWS IN THE LOWER 50S. LIGHT WINDS.
MONDAY
MOSTLY 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.
TUESDAY
MOSTLY SUNNY. HIGHS IN THE MID 80S. SOUTHEAST WINDS
5 TO 10 MPH.
TUESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN MOSTLY CLOUDY
WITH A CHANCE OF SHOWERS AFTER MIDNIGHT. LOWS IN THE UPPER 50S.
EAST WINDS AROUND 5 MPH.
WEDNESDAY
PARTLY SUNNY WITH A CHANCE OF SHOWERS. HIGHS IN THE
MID 80S. SOUTHEAST WINDS AROUND 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 60. EAST WINDS
AROUND 5 MPH.
ILZ008-212115-
OGLE-
INCLUDING THE CITIES OF ROCHELLE, OREGON, AND BYRON
357 AM CDT THU MAY 21 2026
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER PCLDY PCLDY MCLDY CLOUDY
PRECIP TYPE SPRINKLES NONE SHOWERS SHOWERS
CHANCE PRECIP (%) 10 10 30 50
MAX TEMP (24HR TREND) 64 (-4) 68
MIN RH % (24HR TREND) 40 (+3) 48
MIN TEMP (24HR TREND) 45 (+2) 51
MAX RH % (24HR TREND) 83 (+15) 100
20FT WIND AM (MPH) E 11-12 E 10-15
20FT WIND PM (MPH) E 11-12 E 9-11 E 10-15 E 7-11
PEAK WIND GUSTS (MPH) 21 18 23 21
PRECIP AMOUNT (IN) 0.00 0.00 0.01-0.05 0.25-0.50
11 AM MIXING HGT (FT) 3400 2000
MAX MIXING HGT (FT) 4800 2500
TRANSPORT WND (MPH) E 17 E 20
VENT RATE (MPH-FT) 81600 52500
VENT RATE CATEGORY GOOD FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE MID 70S. NORTH WINDS
AROUND 10 MPH, BECOMING WEST IN THE AFTERNOON.
SATURDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. LIGHT WINDS.
SUNDAY
PARTLY SUNNY. HIGHS IN THE UPPER 70S. SOUTH WINDS
AROUND 5 MPH, BECOMING WEST IN THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 50S. LIGHT WINDS.
MONDAY
MOSTLY 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 MID 80S. EAST WINDS 5 TO
10 MPH.
TUESDAY NIGHT
PARTLY CLOUDY. A CHANCE OF SHOWERS AFTER
MIDNIGHT. LOWS AROUND 60. EAST WINDS AROUND 5 MPH.
WEDNESDAY
PARTLY SUNNY WITH A CHANCE OF SHOWERS. HIGHS IN THE
MID 80S. SOUTHEAST WINDS AROUND 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 60S. EAST
WINDS AROUND 5 MPH.
ILZ010-212115-
LEE-
INCLUDING THE CITY OF DIXON
357 AM CDT THU MAY 21 2026
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER PCLDY PCLDY MCLDY CLOUDY
PRECIP TYPE NONE NONE SHOWERS SHOWERS
CHANCE PRECIP (%) 10 10 30 50
MAX TEMP (24HR TREND) 66 (-3) 68
MIN RH % (24HR TREND) 40 (+4) 51
MIN TEMP (24HR TREND) 46 (+3) 51
MAX RH % (24HR TREND) 82 (+11) 100
20FT WIND AM (MPH) E 10-15 E 10-15
20FT WIND PM (MPH) E 10-15 E 10-12 E 10-15 E 8-11
PEAK WIND GUSTS (MPH) 23 19 24 21
PRECIP AMOUNT (IN) 0.00 0.00 0.01-0.05 0.10-0.25
11 AM MIXING HGT (FT) 3500 1900
MAX MIXING HGT (FT) 5300 2500
TRANSPORT WND (MPH) E 17 E 20
VENT RATE (MPH-FT) 90100 52500
VENT RATE CATEGORY GOOD FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE MID 70S. NORTH WINDS
AROUND 10 MPH, BECOMING WEST IN THE AFTERNOON.
SATURDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE MID 50S. WEST WINDS AROUND 5 MPH,
BECOMING SOUTH AFTER MIDNIGHT.
SUNDAY
PARTLY SUNNY. HIGHS IN THE UPPER 70S. SOUTH WINDS
AROUND 5 MPH, BECOMING WEST IN THE AFTERNOON.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. LIGHT WINDS.
MONDAY
MOSTLY 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. HIGHS IN THE LOWER 80S. EAST WINDS 5 TO
10 MPH.
TUESDAY NIGHT
PARTLY CLOUDY. A CHANCE OF SHOWERS AFTER
MIDNIGHT. LOWS AROUND 60. EAST WINDS AROUND 5 MPH.
WEDNESDAY
MOSTLY SUNNY WITH A CHANCE OF SHOWERS. A CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE MID 80S. SOUTHEAST
WINDS AROUND 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 60S. EAST
WINDS AROUND 5 MPH.
ILZ019-212115-
LA SALLE-
INCLUDING THE CITIES OF OTTAWA, STREATOR, LA SALLE, MENDOTA,
AND MARSEILLES
357 AM CDT THU MAY 21 2026
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER PCLDY PCLDY MCLDY CLOUDY
PRECIP TYPE NONE NONE SHOWERS SHOWERS
CHANCE PRECIP (%) 40 60
MAX TEMP (24HR TREND) 69 (+1) 70
MIN RH % (24HR TREND) 38 (-5) 51
MIN TEMP (24HR TREND) 48 (+3) 53
MAX RH % (24HR TREND) 74 (+4) 100
20FT WIND AM (MPH) E 10-15 E 10-15
20FT WIND PM (MPH) E 10-15 NE 9-11 E 10-15 E 7-10
PEAK WIND GUSTS (MPH) 23 21 23 20
PRECIP AMOUNT (IN) 0.00 0.00 0.01-0.05 0.25-0.50
11 AM MIXING HGT (FT) 3900 1900
MAX MIXING HGT (FT) 5400 2300
TRANSPORT WND (MPH) E 18 E 20
VENT RATE (MPH-FT) 97200 48300
VENT RATE CATEGORY GOOD POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
PARTLY SUNNY. HIGHS IN THE MID 70S. NORTH WINDS
AROUND 10 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
PARTLY SUNNY. HIGHS IN THE UPPER 70S. SOUTHWEST WINDS
AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. LIGHT WINDS.
MONDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. EAST WINDS AROUND
5 MPH.
MONDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. EAST WINDS
AROUND 5 MPH.
TUESDAY
PARTLY SUNNY. HIGHS IN THE LOWER 80S. EAST WINDS 5 TO
10 MPH.
TUESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN MOSTLY CLOUDY
WITH A CHANCE OF SHOWERS AFTER MIDNIGHT. LOWS IN THE LOWER 60S.
EAST WINDS AROUND 5 MPH.
WEDNESDAY
MOSTLY SUNNY WITH A CHANCE OF SHOWERS. A CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE MID 80S. SOUTHEAST
WINDS AROUND 10 MPH.
WEDNESDAY NIGHT
A CHANCE OF THUNDERSTORMS IN THE EVENING.
PARTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN THE LOWER 60S.
EAST WINDS AROUND 5 MPH.
ILZ020-212115-
KENDALL-
INCLUDING THE CITIES OF OSWEGO, YORKVILLE, AND PLANO
357 AM CDT THU MAY 21 2026
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER PCLDY PCLDY MCLDY MCLDY
PRECIP TYPE NONE NONE SHOWERS SHOWERS
CHANCE PRECIP (%) 30 60
MAX TEMP (24HR TREND) 66 (+1) 69
MIN RH % (24HR TREND) 40 (-6) 52
MIN TEMP (24HR TREND) 47 (+2) 53
MAX RH % (24HR TREND) 78 (+3) 100
20FT WIND AM (MPH) E 10-15 E 10-15
20FT WIND PM (MPH) NE 10-15 NE 9-10 E 10-15 E 8-11
PEAK WIND GUSTS (MPH) 21 19 23 21
PRECIP AMOUNT (IN) 0.00 0.00 0.01-0.05 0.25-0.50
11 AM MIXING HGT (FT) 3800 1800
MAX MIXING HGT (FT) 4800 2200
TRANSPORT WND (MPH) E 17 E 19
VENT RATE (MPH-FT) 81600 44000
VENT RATE CATEGORY GOOD POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 70S. NORTH WINDS
AROUND 10 MPH, BECOMING NORTHWEST IN THE AFTERNOON.
SATURDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. A CHANCE OF SHOWERS AFTER MIDNIGHT. LOWS IN THE
MID 50S. NORTH WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SUNDAY
PARTLY SUNNY. HIGHS IN THE UPPER 70S. LIGHT WINDS,
BECOMING SOUTHWEST AROUND 5 MPH IN THE AFTERNOON.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. LIGHT WINDS.
MONDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. EAST WINDS AROUND
5 MPH.
MONDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. EAST WINDS
AROUND 5 MPH.
TUESDAY
PARTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHEAST WINDS
5 TO 10 MPH.
TUESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN MOSTLY CLOUDY
WITH A CHANCE OF SHOWERS AFTER MIDNIGHT. LOWS IN THE LOWER 60S.
EAST WINDS AROUND 5 MPH.
WEDNESDAY
PARTLY SUNNY WITH A CHANCE OF SHOWERS. A CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE MID 80S. SOUTHEAST
WINDS 5 TO 10 MPH.
WEDNESDAY NIGHT
A CHANCE OF SHOWERS IN THE EVENING. PARTLY
CLOUDY. LOWS IN THE LOWER 60S. EAST WINDS AROUND 5 MPH.
ILZ021-212115-
GRUNDY-
INCLUDING THE CITIES OF MORRIS, COAL CITY, AND MINOOKA
357 AM CDT THU MAY 21 2026
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER PCLDY PCLDY MCLDY MCLDY
PRECIP TYPE NONE NONE SHOWERS SHOWERS
CHANCE PRECIP (%) 40 60
MAX TEMP (24HR TREND) 69 (+3) 71
MIN RH % (24HR TREND) 40 (-6) 55
MIN TEMP (24HR TREND) 49 (+3) 55
MAX RH % (24HR TREND) 73 (-3) 100
20FT WIND AM (MPH) E 10-15 E 11-12
20FT WIND PM (MPH) E 10-15 NE 9-11 E 11-12 E 7-10
PEAK WIND GUSTS (MPH) 23 20 21 20
PRECIP AMOUNT (IN) 0.00 0.00 0.01-0.05 0.25-0.50
11 AM MIXING HGT (FT) 3900 1800
MAX MIXING HGT (FT) 5300 2300
TRANSPORT WND (MPH) E 17 E 19
VENT RATE (MPH-FT) 90100 46000
VENT RATE CATEGORY GOOD POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
PARTLY SUNNY. HIGHS IN THE MID 70S. NORTH WINDS
AROUND 10 MPH, BECOMING WEST IN THE AFTERNOON.
SATURDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE MID 50S. LIGHT WINDS.
SUNDAY
PARTLY SUNNY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS IN THE UPPER 70S. LIGHT WINDS, BECOMING SOUTHWEST AROUND
5 MPH IN THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE UPPER 50S. LIGHT WINDS.
MONDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. EAST WINDS AROUND
5 MPH.
MONDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. EAST WINDS
AROUND 5 MPH.
TUESDAY
PARTLY SUNNY. HIGHS IN THE MID 80S. EAST WINDS 5 TO
10 MPH.
TUESDAY NIGHT
PARTLY CLOUDY. A CHANCE OF SHOWERS AFTER
MIDNIGHT. LOWS IN THE LOWER 60S. EAST WINDS AROUND 5 MPH.
WEDNESDAY
MOSTLY SUNNY WITH A CHANCE OF SHOWERS. A CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE MID 80S. SOUTHEAST
WINDS 5 TO 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. A CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE EVENING. LOWS IN THE MID 60S. SOUTHEAST
WINDS AROUND 5 MPH.
ILZ022-212115-
WILL-
INCLUDING THE CITIES OF JOLIET, BOLINGBROOK, AND WILMINGTON
357 AM CDT THU MAY 21 2026
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER PCLDY PCLDY MCLDY MCLDY
PRECIP TYPE NONE NONE SHOWERS TSTMS
CHANCE PRECIP (%) 40 70
MAX TEMP (24HR TREND) 67 (+4) 70
MIN RH % (24HR TREND) 42 (-4) 54
MIN TEMP (24HR TREND) 47 (+1) 53
MAX RH % (24HR TREND) 77 (-1) 100
20FT WIND AM (MPH) E 10-15 E 10-15
20FT WIND PM (MPH) NE 10-15 NE 10-11 E 10-15 E 8-11
PEAK WIND GUSTS (MPH) 25 20 23 21
PRECIP AMOUNT (IN) 0.00 0.00 0.01-0.05 0.25-0.50
11 AM MIXING HGT (FT) 3700 1800
MAX MIXING HGT (FT) 4800 2300
TRANSPORT WND (MPH) NE 17 E 19
VENT RATE (MPH-FT) 81600 46000
VENT RATE CATEGORY GOOD POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 70S. NORTH WINDS
AROUND 10 MPH, BECOMING WEST IN THE AFTERNOON.
SATURDAY 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.
SUNDAY
PARTLY SUNNY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS IN THE UPPER 70S. SOUTHWEST WINDS AROUND 5 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE MID 50S. LIGHT WINDS.
MONDAY
MOSTLY SUNNY. HIGHS AROUND 80. NORTHEAST WINDS AROUND
5 MPH.
MONDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. EAST WINDS
AROUND 5 MPH.
TUESDAY
PARTLY SUNNY. HIGHS IN THE LOWER 80S. EAST WINDS 5 TO
10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN PARTLY CLOUDY
WITH A CHANCE OF SHOWERS AFTER MIDNIGHT. LOWS IN THE LOWER 60S.
EAST WINDS AROUND 5 MPH.
WEDNESDAY
PARTLY SUNNY WITH A CHANCE OF SHOWERS. A CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE MID 80S. EAST WINDS
5 TO 10 MPH.
WEDNESDAY NIGHT
A CHANCE OF SHOWERS IN THE EVENING. PARTLY
CLOUDY. LOWS IN THE LOWER 60S. EAST WINDS AROUND 5 MPH.
ILZ032-212115-
LIVINGSTON-
INCLUDING THE CITIES OF PONTIAC, DWIGHT, AND FAIRBURY
357 AM CDT THU MAY 21 2026
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER PCLDY PCLDY MCLDY CLOUDY
PRECIP TYPE NONE NONE SHOWERS TSTMS
CHANCE PRECIP (%) 50 60
MAX TEMP (24HR TREND) 70 (+2) 71
MIN RH % (24HR TREND) 38 (-4) 58
MIN TEMP (24HR TREND) 49 (+2) 55
MAX RH % (24HR TREND) 76 (-1) 100
20FT WIND AM (MPH) E 10-15 E 12
20FT WIND PM (MPH) E 10-15 NE 9-12 E 12 E 6-10
PEAK WIND GUSTS (MPH) 23 21 21 19
PRECIP AMOUNT (IN) 0.00 0.00 0.05-0.10 0.10-0.25
11 AM MIXING HGT (FT) 3800 1700
MAX MIXING HGT (FT) 5300 2300
TRANSPORT WND (MPH) E 18 E 19
VENT RATE (MPH-FT) 95400 46000
VENT RATE CATEGORY GOOD POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
PARTLY SUNNY. HIGHS IN THE MID 70S. WEST WINDS AROUND
10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE UPPER 50S. WEST WINDS AROUND 5 MPH IN
THE EVENING, BECOMING LIGHT.
SUNDAY
PARTLY SUNNY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS IN THE UPPER 70S. SOUTHWEST WINDS AROUND 5 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE UPPER 50S. LIGHT WINDS.
MONDAY
PARTLY SUNNY. HIGHS IN THE LOWER 80S. EAST WINDS AROUND
5 MPH.
MONDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 60. EAST WINDS AROUND
5 MPH.
TUESDAY
PARTLY SUNNY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS IN THE MID 80S. EAST WINDS 5 TO 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. A CHANCE OF SHOWERS. LOWS IN THE LOWER 60S. EAST
WINDS AROUND 5 MPH.
WEDNESDAY
MOSTLY SUNNY WITH A CHANCE OF SHOWERS. A CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE MID 80S. SOUTHEAST
WINDS 5 TO 10 MPH.
WEDNESDAY NIGHT
A CHANCE OF THUNDERSTORMS IN THE EVENING.
PARTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN THE MID 60S.
SOUTHEAST WINDS AROUND 5 MPH.
ILZ023-212115-
KANKAKEE-
INCLUDING THE CITIES OF KANKAKEE, BOURBONNAIS, AND BRADLEY
357 AM CDT THU MAY 21 2026
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER PCLDY PCLDY MCLDY MCLDY
PRECIP TYPE NONE NONE SHOWERS TSTMS
CHANCE PRECIP (%) 40 70
MAX TEMP (24HR TREND) 68 (+4) 71
MIN RH % (24HR TREND) 38 (-6) 56
MIN TEMP (24HR TREND) 47 (+1) 54
MAX RH % (24HR TREND) 77 (-4) 100
20FT WIND AM (MPH) E 10-15 E 11
20FT WIND PM (MPH) NE 10-15 NE 10-11 E 11 E 6-10
PEAK WIND GUSTS (MPH) 24 20 19 19
PRECIP AMOUNT (IN) 0.00 0.00 0.05-0.10 0.25-0.50
11 AM MIXING HGT (FT) 3500 1700
MAX MIXING HGT (FT) 5200 2600
TRANSPORT WND (MPH) NE 17 E 19
VENT RATE (MPH-FT) 88400 52000
VENT RATE CATEGORY GOOD FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE MID 70S. NORTHWEST WINDS
AROUND 10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE MID 50S. LIGHT WINDS.
SUNDAY
PARTLY SUNNY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS IN THE UPPER 70S. LIGHT WINDS, BECOMING SOUTHWEST AROUND
5 MPH IN THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE MID 50S. LIGHT WINDS.
MONDAY
PARTLY SUNNY. HIGHS IN THE LOWER 80S. NORTHEAST WINDS
AROUND 5 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 50S. EAST WINDS
AROUND 5 MPH.
TUESDAY
PARTLY SUNNY. HIGHS IN THE LOWER 80S. EAST WINDS
AROUND 5 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS AFTER
MIDNIGHT. LOWS IN THE LOWER 60S. EAST WINDS AROUND 5 MPH.
WEDNESDAY
MOSTLY SUNNY WITH A CHANCE OF SHOWERS. A CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE MID 80S. SOUTHEAST
WINDS 5 TO 10 MPH.
WEDNESDAY NIGHT
A CHANCE OF SHOWERS IN THE EVENING. PARTLY
CLOUDY. LOWS IN THE LOWER 60S. EAST WINDS AROUND 5 MPH.
ILZ039-212115-
FORD-
INCLUDING THE CITIES OF PAXTON AND GIBSON CITY
357 AM CDT THU MAY 21 2026
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER PCLDY PCLDY MCLDY CLOUDY
PRECIP TYPE NONE NONE SHOWERS TSTMS
CHANCE PRECIP (%) 50 70
MAX TEMP (24HR TREND) 69 (+1) 70
MIN RH % (24HR TREND) 38 (-6) 60
MIN TEMP (24HR TREND) 49 (+2) 55
MAX RH % (24HR TREND) 77 (0) 100
20FT WIND AM (MPH) E 10-15 E 12
20FT WIND PM (MPH) E 10-15 NE 10-11 E 12 E 7-11
PEAK WIND GUSTS (MPH) 23 19 20 17
PRECIP AMOUNT (IN) 0.00 0.00 0.05-0.10 0.10-0.25
11 AM MIXING HGT (FT) 3500 1700
MAX MIXING HGT (FT) 4800 2400
TRANSPORT WND (MPH) E 18 E 19
VENT RATE (MPH-FT) 86400 48000
VENT RATE CATEGORY GOOD POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
PARTLY SUNNY. HIGHS IN THE MID 70S. WEST WINDS AROUND
10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE UPPER 50S. SOUTHWEST WINDS AROUND
5 MPH, BECOMING SOUTH AFTER MIDNIGHT.
SUNDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. HIGHS IN THE
UPPER 70S. SOUTHWEST WINDS AROUND 5 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE UPPER 50S. LIGHT WINDS.
MONDAY
PARTLY SUNNY. HIGHS IN THE LOWER 80S. EAST WINDS AROUND
5 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 60. EAST WINDS AROUND
5 MPH.
TUESDAY
PARTLY SUNNY WITH A CHANCE OF SHOWERS. HIGHS IN THE
LOWER 80S. EAST WINDS 5 TO 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE LOWER 60S. SOUTHEAST WINDS AROUND 5 MPH.
WEDNESDAY
PARTLY SUNNY WITH A CHANCE OF SHOWERS. A CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE MID 80S. SOUTHEAST
WINDS AROUND 10 MPH.
WEDNESDAY NIGHT
A CHANCE OF THUNDERSTORMS IN THE EVENING.
PARTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN THE MID 60S.
SOUTHEAST WINDS AROUND 5 MPH.
ILZ033-212115-
IROQUOIS-
INCLUDING THE CITIES OF WATSEKA AND GILMAN
357 AM CDT THU MAY 21 2026
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER PCLDY PCLDY MCLDY CLOUDY
PRECIP TYPE NONE NONE SHOWERS TSTMS
CHANCE PRECIP (%) 50 70
MAX TEMP (24HR TREND) 69 (+2) 70
MIN RH % (24HR TREND) 37 (-14) 57
MIN TEMP (24HR TREND) 48 (+1) 55
MAX RH % (24HR TREND) 77 (-1) 100
20FT WIND AM (MPH) E 12 E 11
20FT WIND PM (MPH) E 12 E 9-11 E 11 E 6-10
PEAK WIND GUSTS (MPH) 23 19 18 16
PRECIP AMOUNT (IN) 0.00 0.00 0.05-0.10 0.25-0.50
11 AM MIXING HGT (FT) 3500 1800
MAX MIXING HGT (FT) 4900 2500
TRANSPORT WND (MPH) E 18 E 19
VENT RATE (MPH-FT) 88200 50000
VENT RATE CATEGORY GOOD FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE MID 70S. WEST WINDS
AROUND 10 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. LOWS IN THE UPPER 50S. LIGHT
WINDS.
MONDAY
PARTLY SUNNY. HIGHS IN THE LOWER 80S. NORTHEAST WINDS
AROUND 5 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 60. EAST WINDS AROUND
5 MPH IN THE EVENING, BECOMING LIGHT.
TUESDAY
PARTLY SUNNY. HIGHS IN THE LOWER 80S. EAST WINDS
AROUND 5 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS AFTER
MIDNIGHT. LOWS IN THE LOWER 60S. EAST WINDS AROUND 5 MPH.
WEDNESDAY
MOSTLY SUNNY WITH A CHANCE OF SHOWERS. A CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE MID 80S. SOUTHEAST
WINDS 5 TO 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. A CHANCE OF SHOWERS AND
THUNDERSTORMS IN THE EVENING. LOWS IN THE MID 60S. EAST WINDS
AROUND 5 MPH.
INZ010-212115-
NEWTON-
INCLUDING THE CITIES OF ROSELAWN, KENTLAND, AND MOROCCO
357 AM CDT THU MAY 21 2026
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER PCLDY PCLDY MCLDY CLOUDY
PRECIP TYPE NONE NONE SHOWERS TSTMS
CHANCE PRECIP (%) 40 70
MAX TEMP (24HR TREND) 68 (+3) 70
MIN RH % (24HR TREND) 38 (-11) 59
MIN TEMP (24HR TREND) 47 (+1) 54
MAX RH % (24HR TREND) 79 (-2) 100
20FT WIND AM (MPH) E 11-12 E 11-12
20FT WIND PM (MPH) NE 11-12 E 10 E 11-12 E 7-11
PEAK WIND GUSTS (MPH) 20 15 18 18
PRECIP AMOUNT (IN) 0.00 0.00 0.05-0.10 0.25-0.50
11 AM MIXING HGT (FT) 3400 1800
MAX MIXING HGT (FT) 5000 2600
TRANSPORT WND (MPH) NE 17 E 20
VENT RATE (MPH-FT) 85000 54600
VENT RATE CATEGORY GOOD FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 70S. NORTHWEST
WINDS AROUND 10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE MID 50S. LIGHT WINDS.
SUNDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. A CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE UPPER 70S. LIGHT
WINDS, BECOMING SOUTHWEST AROUND 5 MPH IN THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 50S. LIGHT WINDS.
MONDAY
PARTLY SUNNY. HIGHS AROUND 80. EAST WINDS AROUND 5 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 50S. NORTHEAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
TUESDAY
PARTLY SUNNY. HIGHS IN THE LOWER 80S. EAST WINDS
AROUND 5 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS AFTER
MIDNIGHT. LOWS IN THE LOWER 60S. EAST WINDS AROUND 5 MPH.
WEDNESDAY
PARTLY SUNNY WITH A CHANCE OF SHOWERS. A CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE LOWER 80S. SOUTHEAST
WINDS 5 TO 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. A CHANCE OF SHOWERS IN THE
EVENING. LOWS IN THE LOWER 60S. EAST WINDS AROUND 5 MPH.
INZ011-212115-
JASPER-
INCLUDING THE CITIES OF RENSSELAER AND DEMOTTE
357 AM CDT THU MAY 21 2026
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER MCLEAR PCLDY PCLDY MCLDY
PRECIP TYPE NONE NONE SHOWERS TSTMS
CHANCE PRECIP (%) 40 80
MAX TEMP (24HR TREND) 68 (+3) 70
MIN RH % (24HR TREND) 37 (-11) 59
MIN TEMP (24HR TREND) 48 (+2) 55
MAX RH % (24HR TREND) 78 (-5) 100
20FT WIND AM (MPH) E 11-12 E 11-12
20FT WIND PM (MPH) NE 11-12 E 10-11 E 11-12 E 7-11
PEAK WIND GUSTS (MPH) 20 20 20
PRECIP AMOUNT (IN) 0.00 0.00 0.05-0.10 0.50-0.75
11 AM MIXING HGT (FT) 3400 1800
MAX MIXING HGT (FT) 5100 2500
TRANSPORT WND (MPH) NE 17 E 20
VENT RATE (MPH-FT) 86700 52500
VENT RATE CATEGORY GOOD FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE MORNING.
HIGHS IN THE LOWER 70S. SOUTH WINDS AROUND 10 MPH, BECOMING WEST
IN THE AFTERNOON.
SATURDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE MID 50S. LIGHT WINDS.
SUNDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. A CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE UPPER 70S. SOUTHWEST
WINDS AROUND 5 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 50S. LIGHT
WINDS.
MONDAY
PARTLY SUNNY. HIGHS IN THE UPPER 70S. NORTHEAST WINDS
AROUND 5 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 50S. NORTHEAST
WINDS AROUND 5 MPH.
TUESDAY
PARTLY SUNNY. HIGHS IN THE LOWER 80S. EAST WINDS
AROUND 5 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS AFTER
MIDNIGHT. LOWS IN THE LOWER 60S. EAST WINDS AROUND 5 MPH.
WEDNESDAY
PARTLY SUNNY WITH A CHANCE OF SHOWERS. A CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE LOWER 80S. SOUTHEAST
WINDS 5 TO 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 60S.
SOUTHEAST WINDS AROUND 5 MPH.
INZ019-212115-
BENTON-
INCLUDING THE CITIES OF FOWLER AND OXFORD
457 AM EDT THU MAY 21 2026
TODAY TONIGHT FRI FRI NIGHT
CLOUD COVER PCLDY PCLDY MCLDY MCLDY
PRECIP TYPE NONE NONE SHOWERS TSTMS
CHANCE PRECIP (%) 50 80
MAX TEMP (24HR TREND) 68 (0) 69
MIN RH % (24HR TREND) 38 (-12) 61
MIN TEMP (24HR TREND) 49 (+1) 56
MAX RH % (24HR TREND) 77 (-4) 100
20FT WIND AM (MPH) E 10-15 E 12
20FT WIND PM (MPH) E 10-15 E 10-12 E 12 E 7-12
PEAK WIND GUSTS (MPH) 20 19 18
PRECIP AMOUNT (IN) 0.00 0.00 0.10-0.25 0.25-0.50
11 AM MIXING HGT (FT) 3300 1600
MAX MIXING HGT (FT) 4300 2300
TRANSPORT WND (MPH) E 18 E 19
VENT RATE (MPH-FT) 77400 46000
VENT RATE CATEGORY GOOD POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE MID 70S. WEST WINDS
AROUND 10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE UPPER 50S. LIGHT WINDS.
SUNDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. A CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE UPPER 70S. SOUTHWEST
WINDS AROUND 5 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 50S. LIGHT
WINDS.
MONDAY
PARTLY SUNNY. HIGHS IN THE UPPER 70S. EAST WINDS AROUND
5 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 60S. EAST WINDS
AROUND 5 MPH.
TUESDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE MORNING.
HIGHS AROUND 80. EAST WINDS AROUND 5 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS AFTER
MIDNIGHT. LOWS IN THE LOWER 60S. SOUTHEAST WINDS AROUND 5 MPH.
WEDNESDAY
PARTLY SUNNY WITH A CHANCE OF SHOWERS. A CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE LOWER 80S. SOUTHEAST
WINDS 5 TO 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 60S. SOUTHEAST
WINDS AROUND 5 MPH.
RATZER
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