829
FNUS53 KLOT 310909
FWFLOT
FIRE WEATHER PLANNING FORECAST FOR NORTHERN IL AND NORTHWEST IN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
409 AM CDT MON AUG 31 2026
DISCUSSION
SCATTERED SHOWERS AND STORMS ARE ONGOING THIS MORNING AND WILL
CONTINUE THROUGH AT LEAST THE LATE MORNING. COVERAGE SHOULD
DIMINISH THROUGH THE DAY, BUT THERE IS ADDITIONAL CHANCES, MAINLY
NORTH OF I-88, THIS AFTERNOON/EVENING. SOUTH-SOUTHWESTERLY WINDS
ARE EXPECTED TO BE BREEZY WITH GUSTS AROUND 20 MPH, PARTICULARLY
IN THE LATE MORNING/EARLY AFTERNOON.
PERIODIC SHOWER/STORM CHANCES WILL CONTINUE THROUGH THE WEEK,
THOUGH THERE WILL BE MANY DRY HOURS. INCREASING HEAT AND HUMIDITY
IS ALSO EXPECTED WITH HOTTEST TEMPERATURES TOMORROW AND WEDNESDAY
WHERE HEAT INDICES ARE EXPECTED TO CLIMB INTO THE 90S AREAWIDE
AND POTENTIALLY AROUND 100 FOR AREAS SOUTH OF I-80.
ILZ014-312115-
COOK-
INCLUDING THE CITIES OF CHICAGO, SCHAUMBURG, EVANSTON, OAK LAWN,
LEMONT, ORLAND PARK, AND PARK FOREST
409 AM CDT MON AUG 31 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER PCLDY PCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS TSTMS NONE
CHANCE PRECIP (%) 40 20 20 10
MAX TEMP (24HR TREND) 87 (+5) 89
MIN RH % (24HR TREND) 52 (-8) 55
MIN TEMP (24HR TREND) 73 (+1) 73
MAX RH % (24HR TREND) 83 (-10) 79
20FT WIND AM (MPH) SW 10 SW 6-8
20FT WIND PM (MPH) SW 10 SW 6-7 SW 6-8 SW 5
PEAK WIND GUSTS (MPH) 20 14
PRECIP AMOUNT (IN) 0.01-0.05 0.00 0.01-0.05 0.00
11 AM MIXING HGT (FT) 1400 2100
MAX MIXING HGT (FT) 2700 3500
TRANSPORT WND (MPH) SW 17 SW 11
VENT RATE (MPH-FT) 45900 42000
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
SUNNY. HIGHS AROUND 90. SOUTHWEST WINDS 10 TO
15 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. A CHANCE OF SHOWERS AND
THUNDERSTORMS AFTER MIDNIGHT. LOWS IN THE LOWER 70S. SOUTHWEST
WINDS AROUND 10 MPH, BECOMING NORTHWEST AFTER MIDNIGHT.
THURSDAY
PARTLY SUNNY. A CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE MORNING. HIGHS IN THE MID 80S. NORTH WINDS AROUND 5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 70S. NORTHEAST
WINDS AROUND 5 MPH.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 80S. NORTHEAST WINDS
AROUND 5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 70. NORTHEAST WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE MID 80S. EAST WINDS AROUND
5 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 60S. EAST
WINDS AROUND 5 MPH.
SUNDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. EAST WINDS AROUND
5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 60S. EAST WINDS
AROUND 5 MPH.
ILZ006-312115-
LAKE IL-
INCLUDING THE CITIES OF WAUKEGAN, BUFFALO GROVE, MUNDELEIN,
AND GURNEE
409 AM CDT MON AUG 31 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER PCLDY PCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 40 20 20 20
MAX TEMP (24HR TREND) 86 (+4) 87
MIN RH % (24HR TREND) 59 (0) 61
MIN TEMP (24HR TREND) 72 (+1) 72
MAX RH % (24HR TREND) 89 (-7) 86
20FT WIND AM (MPH) SW 10-11 SW 5-7
20FT WIND PM (MPH) SW 10-11 LGT/VAR SW 5-7 LGT/VAR
PEAK WIND GUSTS (MPH) 20
PRECIP AMOUNT (IN) 0.05-0.10 0.00 0.01-0.05 0.10-0.25
11 AM MIXING HGT (FT) 1300 1900
MAX MIXING HGT (FT) 2500 3200
TRANSPORT WND (MPH) SW 18 SW 11
VENT RATE (MPH-FT) 45000 38400
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 80S. SOUTHWEST
WINDS 10 TO 15 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. A CHANCE OF SHOWERS AND
THUNDERSTORMS AFTER MIDNIGHT. LOWS AROUND 70. WEST WINDS 5 TO
10 MPH.
THURSDAY
PARTLY SUNNY. A CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE MORNING. HIGHS IN THE LOWER 80S. NORTH WINDS AROUND 5 MPH.
THURSDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE UPPER 60S. LIGHT WINDS.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. EAST WINDS AROUND
5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 60S. LIGHT
WINDS.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. EAST WINDS
AROUND 5 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 60S. LIGHT
WINDS.
SUNDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHEAST WINDS
AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 60S. EAST WINDS
AROUND 5 MPH.
INZ001-312115-
LAKE IN-
INCLUDING THE CITIES OF GARY, HAMMOND, AND MERRILLVILLE
409 AM CDT MON AUG 31 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER PCLDY PCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS TSTMS NONE
CHANCE PRECIP (%) 30 20 20 10
MAX TEMP (24HR TREND) 87 (+5) 89
MIN RH % (24HR TREND) 55 (-10) 56
MIN TEMP (24HR TREND) 72 (+2) 73
MAX RH % (24HR TREND) 81 (-10) 81
20FT WIND AM (MPH) SW 9 SW 6-7
20FT WIND PM (MPH) SW 9 SW 6 SW 6-7 LGT/VAR
PEAK WIND GUSTS (MPH) 19
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 1400 1700
MAX MIXING HGT (FT) 2500 3100
TRANSPORT WND (MPH) SW 20 SW 11
VENT RATE (MPH-FT) 52500 37200
VENT RATE CATEGORY FAIR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
SUNNY. HIGHS IN THE LOWER 90S. SOUTHWEST WINDS
AROUND 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 70S.
SOUTHWEST WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 80S. SOUTH WINDS
AROUND 5 MPH, BECOMING NORTH IN THE AFTERNOON.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 60S. LIGHT
WINDS.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 80S. NORTHEAST WINDS
AROUND 5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 60S. NORTH WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE MID 80S. NORTHEAST WINDS
AROUND 5 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 60S. NORTHEAST
WINDS AROUND 5 MPH, BECOMING EAST AFTER MIDNIGHT.
SUNDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHEAST WINDS
AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 60S. EAST WINDS
AROUND 5 MPH.
INZ002-312115-
PORTER-
INCLUDING THE CITIES OF PORTAGE, VALPARAISO, AND CHESTERTON
409 AM CDT MON AUG 31 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER PCLDY PCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS TSTMS NONE
CHANCE PRECIP (%) 30 20 20 10
MAX TEMP (24HR TREND) 86 (+4) 89
MIN RH % (24HR TREND) 57 (-3) 58
MIN TEMP (24HR TREND) 72 (+2) 73
MAX RH % (24HR TREND) 82 (-9) 81
20FT WIND AM (MPH) SW 9 SW 6-7
20FT WIND PM (MPH) SW 9 SW 6 SW 6-7 LGT/VAR
PEAK WIND GUSTS (MPH) 18
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 1300 1500
MAX MIXING HGT (FT) 2500 2800
TRANSPORT WND (MPH) SW 19 SW 11
VENT RATE (MPH-FT) 50000 33600
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
SUNNY. HIGHS AROUND 90. SOUTHWEST WINDS AROUND
10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 70S.
SOUTHWEST WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 80S. SOUTH WINDS
AROUND 5 MPH, BECOMING NORTHWEST IN THE AFTERNOON.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 60S. NORTH
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 80S. NORTHEAST WINDS
AROUND 5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 60S. NORTH WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. NORTHEAST WINDS
AROUND 5 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 60S. NORTHEAST
WINDS AROUND 5 MPH, BECOMING EAST AFTER MIDNIGHT.
SUNDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. EAST WINDS AROUND
5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 60S. EAST WINDS
AROUND 5 MPH.
ILZ013-312115-
DUPAGE-
INCLUDING THE CITIES OF NAPERVILLE, WHEATON, DOWNERS GROVE,
LOMBARD, AND CAROL STREAM
409 AM CDT MON AUG 31 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER PCLDY PCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS TSTMS NONE
CHANCE PRECIP (%) 40 20 20 10
MAX TEMP (24HR TREND) 87 (+5) 89
MIN RH % (24HR TREND) 55 (-4) 56
MIN TEMP (24HR TREND) 72 (+1) 73
MAX RH % (24HR TREND) 85 (-10) 82
20FT WIND AM (MPH) SW 10 SW 6-7
20FT WIND PM (MPH) SW 10 SW 6 SW 6-7 SW 5
PEAK WIND GUSTS (MPH) 20 15
PRECIP AMOUNT (IN) 0.01-0.05 0.00 0.01-0.05 0.00
11 AM MIXING HGT (FT) 1300 2100
MAX MIXING HGT (FT) 2600 3200
TRANSPORT WND (MPH) SW 18 SW 11
VENT RATE (MPH-FT) 46800 38400
VENT RATE CATEGORY FAIR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
SUNNY. HIGHS IN THE LOWER 90S. SOUTHWEST WINDS 10 TO
15 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. A CHANCE OF SHOWERS AND
THUNDERSTORMS AFTER MIDNIGHT. LOWS IN THE LOWER 70S. SOUTHWEST
WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY SUNNY. A CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE MORNING. HIGHS IN THE MID 80S. NORTH WINDS AROUND 5 MPH,
BECOMING WEST IN THE AFTERNOON.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 70. EAST WINDS
AROUND 5 MPH.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 80S. EAST WINDS AROUND
5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 70. NORTHEAST WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE MID 80S. EAST WINDS AROUND
5 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 60S. EAST
WINDS AROUND 5 MPH.
SUNDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHEAST WINDS
AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 60S. SOUTHEAST
WINDS AROUND 5 MPH.
ILZ012-312115-
KANE-
INCLUDING THE CITIES OF AURORA AND ELGIN
409 AM CDT MON AUG 31 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER PCLDY PCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS TSTMS NONE
CHANCE PRECIP (%) 40 20 20 10
MAX TEMP (24HR TREND) 86 (+5) 88
MIN RH % (24HR TREND) 61 (-1) 62
MIN TEMP (24HR TREND) 72 (+2) 71
MAX RH % (24HR TREND) 88 (-9) 84
20FT WIND AM (MPH) SW 10 SW 6-7
20FT WIND PM (MPH) SW 10 SW 5 SW 6-7 LGT/VAR
PEAK WIND GUSTS (MPH) 20
PRECIP AMOUNT (IN) 0.01-0.05 0.00 0.01-0.05 0.00
11 AM MIXING HGT (FT) 1300 1800
MAX MIXING HGT (FT) 2400 2700
TRANSPORT WND (MPH) SW 18 SW 12
VENT RATE (MPH-FT) 43200 35100
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
SUNNY. HIGHS IN THE UPPER 80S. SOUTHWEST WINDS 10 TO
15 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. A CHANCE OF SHOWERS AND
THUNDERSTORMS AFTER MIDNIGHT. LOWS IN THE LOWER 70S. WEST WINDS
5 TO 10 MPH.
THURSDAY
MOSTLY SUNNY. A CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE MORNING. HIGHS IN THE MID 80S. NORTH WINDS AROUND 5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 60S. EAST
WINDS AROUND 5 MPH.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 80S. EAST WINDS AROUND
5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 60S. NORTHEAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE MID 80S. NORTHEAST WINDS
AROUND 5 MPH, BECOMING EAST IN THE AFTERNOON.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 60S. EAST WINDS
AROUND 5 MPH.
SUNDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHEAST WINDS
AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 60S. EAST WINDS
AROUND 5 MPH.
ILZ005-312115-
MCHENRY-
INCLUDING THE CITIES OF CRYSTAL LAKE, ALGONQUIN, MCHENRY,
AND WOODSTOCK
409 AM CDT MON AUG 31 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER PCLDY PCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 30 20 20 10
MAX TEMP (24HR TREND) 85 (+3) 87
MIN RH % (24HR TREND) 63 (+2) 64
MIN TEMP (24HR TREND) 71 (+1) 71
MAX RH % (24HR TREND) 92 (-4) 87
20FT WIND AM (MPH) SW 10-11 SW 5-7
20FT WIND PM (MPH) SW 10-11 LGT/VAR SW 5-7 LGT/VAR
PEAK WIND GUSTS (MPH) 20
PRECIP AMOUNT (IN) 0.01-0.05 0.00 0.01-0.05 0.10-0.25
11 AM MIXING HGT (FT) 1500 1600
MAX MIXING HGT (FT) 2600 2800
TRANSPORT WND (MPH) SW 19 SW 12
VENT RATE (MPH-FT) 52000 36400
VENT RATE CATEGORY FAIR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 80S. SOUTHWEST
WINDS 10 TO 15 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. A CHANCE OF SHOWERS AND
THUNDERSTORMS AFTER MIDNIGHT. LOWS IN THE UPPER 60S. WEST WINDS
5 TO 10 MPH.
THURSDAY
PARTLY SUNNY. A CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE MORNING. HIGHS IN THE MID 80S. NORTHEAST WINDS AROUND
5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 60S. EAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 80S. EAST WINDS AROUND
5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 60S. LIGHT
WINDS.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE MID 80S. LIGHT WINDS,
BECOMING EAST AROUND 5 MPH IN THE AFTERNOON.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 60S. LIGHT
WINDS.
SUNDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHEAST WINDS
AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 60S. LIGHT
WINDS.
ILZ004-312115-
BOONE-
INCLUDING THE CITY OF BELVIDERE
409 AM CDT MON AUG 31 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER PCLDY PCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 30 20 20 20
MAX TEMP (24HR TREND) 85 (+3) 87
MIN RH % (24HR TREND) 64 (0) 64
MIN TEMP (24HR TREND) 71 (+1) 71
MAX RH % (24HR TREND) 92 (-2) 87
20FT WIND AM (MPH) SW 10 SW 5-7
20FT WIND PM (MPH) SW 10 LGT/VAR SW 5-7 LGT/VAR
PEAK WIND GUSTS (MPH) 20
PRECIP AMOUNT (IN) 0.01-0.05 0.00 0.01-0.05 0.10-0.25
11 AM MIXING HGT (FT) 1600 1700
MAX MIXING HGT (FT) 2600 2800
TRANSPORT WND (MPH) SW 18 SW 12
VENT RATE (MPH-FT) 46800 36400
VENT RATE CATEGORY FAIR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 80S. SOUTHWEST
WINDS 10 TO 15 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. A CHANCE OF SHOWERS AND
THUNDERSTORMS AFTER MIDNIGHT. LOWS IN THE UPPER 60S. WEST WINDS
AROUND 10 MPH IN THE EVENING, BECOMING LIGHT.
THURSDAY
PARTLY SUNNY. A CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE MORNING. HIGHS IN THE MID 80S. EAST WINDS AROUND 5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 60S. EAST
WINDS AROUND 5 MPH.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 80S. EAST WINDS AROUND
5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 60S. EAST WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE MID 80S. EAST WINDS AROUND
5 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 60S. EAST WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SUNDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHEAST WINDS
AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 60S. SOUTHEAST
WINDS AROUND 5 MPH.
ILZ011-312115-
DE KALB-
INCLUDING THE CITIES OF DEKALB AND SYCAMORE
409 AM CDT MON AUG 31 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER PCLDY PCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS TSTMS NONE
CHANCE PRECIP (%) 30 20 20 10
MAX TEMP (24HR TREND) 85 (+4) 88
MIN RH % (24HR TREND) 62 (-6) 63
MIN TEMP (24HR TREND) 72 (+2) 71
MAX RH % (24HR TREND) 89 (-9) 84
20FT WIND AM (MPH) SW 10-11 SW 6-7
20FT WIND PM (MPH) SW 10-11 S 5 SW 6-7 S 5
PEAK WIND GUSTS (MPH) 19
PRECIP AMOUNT (IN) 0.01-0.05 0.00 0.01-0.05 0.00
11 AM MIXING HGT (FT) 1300 1800
MAX MIXING HGT (FT) 2600 2700
TRANSPORT WND (MPH) SW 18 SW 12
VENT RATE (MPH-FT) 46800 35100
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
SUNNY. HIGHS IN THE UPPER 80S. SOUTHWEST WINDS 10 TO
15 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. A CHANCE OF SHOWERS AND
THUNDERSTORMS AFTER MIDNIGHT. LOWS AROUND 70. WEST WINDS 5 TO
10 MPH.
THURSDAY
MOSTLY SUNNY. A CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE MORNING. HIGHS IN THE MID 80S. NORTHEAST WINDS AROUND
5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 60S. EAST
WINDS AROUND 5 MPH.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 80S. EAST WINDS AROUND
5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 60S. NORTHEAST
WINDS AROUND 5 MPH.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE MID 80S. NORTHEAST WINDS
AROUND 5 MPH, BECOMING EAST IN THE AFTERNOON.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 60S. EAST WINDS
AROUND 5 MPH.
SUNDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHEAST WINDS
AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 60S. SOUTHEAST
WINDS AROUND 5 MPH.
ILZ003-312115-
WINNEBAGO-
INCLUDING THE CITY OF ROCKFORD
409 AM CDT MON AUG 31 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER PCLDY PCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 30 20 20 20
MAX TEMP (24HR TREND) 85 (+2) 87
MIN RH % (24HR TREND) 61 (-1) 62
MIN TEMP (24HR TREND) 71 (0) 71
MAX RH % (24HR TREND) 92 (-2) 86
20FT WIND AM (MPH) SW 10-12 SW 5-7
20FT WIND PM (MPH) SW 10-12 LGT/VAR SW 5-7 LGT/VAR
PEAK WIND GUSTS (MPH) 20
PRECIP AMOUNT (IN) 0.01-0.05 0.00 0.01-0.05 0.10-0.25
11 AM MIXING HGT (FT) 1700 1800
MAX MIXING HGT (FT) 2600 2900
TRANSPORT WND (MPH) SW 17 SW 11
VENT RATE (MPH-FT) 44200 34800
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 80S. SOUTHWEST
WINDS 10 TO 15 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. A CHANCE OF SHOWERS AND
THUNDERSTORMS AFTER MIDNIGHT. LOWS AROUND 70. WEST WINDS 5 TO
10 MPH.
THURSDAY
PARTLY SUNNY. A CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE MORNING. HIGHS IN THE MID 80S. EAST WINDS AROUND 5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 60S. EAST
WINDS AROUND 5 MPH.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 80S. EAST WINDS AROUND
5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 60S. EAST WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE MID 80S. EAST WINDS AROUND
5 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 60S. EAST WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SUNDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHEAST WINDS
AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 60S. SOUTHEAST
WINDS AROUND 5 MPH.
ILZ008-312115-
OGLE-
INCLUDING THE CITIES OF ROCHELLE, OREGON, AND BYRON
409 AM CDT MON AUG 31 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER PCLDY PCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS TSTMS NONE
CHANCE PRECIP (%) 30 20 20 10
MAX TEMP (24HR TREND) 86 (+4) 88
MIN RH % (24HR TREND) 61 (-4) 62
MIN TEMP (24HR TREND) 71 (+1) 71
MAX RH % (24HR TREND) 89 (-7) 85
20FT WIND AM (MPH) SW 9-11 SW 5-6
20FT WIND PM (MPH) SW 9-11 LGT/VAR SW 5-6 LGT/VAR
PEAK WIND GUSTS (MPH) 19
PRECIP AMOUNT (IN) 0.01-0.05 0.00 0.01-0.05 0.00
11 AM MIXING HGT (FT) 1700 1600
MAX MIXING HGT (FT) 2700 2800
TRANSPORT WND (MPH) SW 18 SW 12
VENT RATE (MPH-FT) 48600 36400
VENT RATE CATEGORY FAIR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
SUNNY. HIGHS IN THE UPPER 80S. SOUTHWEST WINDS 10 TO
15 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. A CHANCE OF SHOWERS AND
THUNDERSTORMS AFTER MIDNIGHT. LOWS AROUND 70. WEST WINDS AROUND
5 MPH IN THE EVENING, BECOMING LIGHT.
THURSDAY
MOSTLY SUNNY. A CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE MORNING. HIGHS IN THE MID 80S. EAST WINDS AROUND 5 MPH,
BECOMING SOUTHEAST IN THE AFTERNOON.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 60S. EAST
WINDS AROUND 5 MPH.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 80S. EAST WINDS AROUND
5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 60S. NORTHEAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE MID 80S. EAST WINDS AROUND
5 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 60S. EAST WINDS
AROUND 5 MPH.
SUNDAY
MOSTLY SUNNY. HIGHS IN THE MID 80S. SOUTHEAST WINDS
AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 60S. SOUTHEAST
WINDS AROUND 5 MPH.
ILZ010-312115-
LEE-
INCLUDING THE CITY OF DIXON
409 AM CDT MON AUG 31 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER PCLDY PCLDY PCLDY CLEAR
PRECIP TYPE TSTMS TSTMS TSTMS NONE
CHANCE PRECIP (%) 30 20 20 10
MAX TEMP (24HR TREND) 88 (+6) 89
MIN RH % (24HR TREND) 60 (-6) 60
MIN TEMP (24HR TREND) 72 (+2) 71
MAX RH % (24HR TREND) 86 (-10) 82
20FT WIND AM (MPH) SW 9-10 SW 5-6
20FT WIND PM (MPH) SW 9-10 LGT/VAR SW 5-6 S 5
PEAK WIND GUSTS (MPH) 19
PRECIP AMOUNT (IN) 0.01-0.05 0.00 0.00 0.00
11 AM MIXING HGT (FT) 1500 1600
MAX MIXING HGT (FT) 2600 3600
TRANSPORT WND (MPH) SW 18 SW 13
VENT RATE (MPH-FT) 46800 50400
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
SUNNY. HIGHS AROUND 90. SOUTHWEST WINDS 10 TO
15 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 70S. WEST
WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY SUNNY. A CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE MORNING. HIGHS IN THE MID 80S. EAST WINDS AROUND 5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 70. EAST WINDS
AROUND 5 MPH.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 80S. EAST WINDS AROUND
5 MPH.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S. EAST WINDS
AROUND 5 MPH.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE MID 80S. EAST WINDS AROUND
5 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 60S. EAST WINDS
AROUND 5 MPH.
SUNDAY
MOSTLY SUNNY. HIGHS IN THE MID 80S. SOUTHEAST WINDS
AROUND 5 MPH.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 60S. EAST WINDS
AROUND 5 MPH.
ILZ019-312115-
LA SALLE-
INCLUDING THE CITIES OF OTTAWA, STREATOR, LA SALLE, MENDOTA,
AND MARSEILLES
409 AM CDT MON AUG 31 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER PCLDY PCLDY MCLEAR CLEAR
PRECIP TYPE TSTMS TSTMS NONE NONE
CHANCE PRECIP (%) 30 20 10
MAX TEMP (24HR TREND) 88 (+4) 90
MIN RH % (24HR TREND) 57 (-9) 55
MIN TEMP (24HR TREND) 72 (+1) 72
MAX RH % (24HR TREND) 83 (-13) 80
20FT WIND AM (MPH) SW 9 SW 6
20FT WIND PM (MPH) SW 9 S 5-6 SW 6 LGT/VAR
PEAK WIND GUSTS (MPH) 19
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 1200 1500
MAX MIXING HGT (FT) 2700 3600
TRANSPORT WND (MPH) SW 18 SW 13
VENT RATE (MPH-FT) 48600 50400
VENT RATE CATEGORY FAIR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
SUNNY. HIGHS IN THE LOWER 90S. SOUTHWEST WINDS
AROUND 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 70S. SOUTHWEST
WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY SUNNY. A CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE MORNING. HIGHS IN THE UPPER 80S. SOUTH WINDS AROUND 5 MPH,
BECOMING SOUTHWEST IN THE AFTERNOON.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 70S. EAST
WINDS AROUND 5 MPH.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 80S. EAST WINDS AROUND
5 MPH, BECOMING NORTH IN THE AFTERNOON.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S. NORTHEAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 80S. LIGHT WINDS,
BECOMING EAST AROUND 5 MPH IN THE AFTERNOON.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S. EAST WINDS
AROUND 5 MPH.
SUNDAY
SUNNY. HIGHS IN THE MID 80S. EAST WINDS AROUND 5 MPH.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 60S. EAST WINDS
AROUND 5 MPH.
ILZ020-312115-
KENDALL-
INCLUDING THE CITIES OF OSWEGO, YORKVILLE, AND PLANO
409 AM CDT MON AUG 31 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER PCLDY PCLDY PCLDY CLEAR
PRECIP TYPE TSTMS TSTMS TSTMS NONE
CHANCE PRECIP (%) 40 20 20 10
MAX TEMP (24HR TREND) 87 (+5) 89
MIN RH % (24HR TREND) 59 (-6) 61
MIN TEMP (24HR TREND) 72 (+2) 72
MAX RH % (24HR TREND) 86 (-14) 82
20FT WIND AM (MPH) SW 9-10 SW 6-7
20FT WIND PM (MPH) SW 9-10 S 5 SW 6-7 S 5
PEAK WIND GUSTS (MPH) 19
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 1300 1600
MAX MIXING HGT (FT) 2500 2900
TRANSPORT WND (MPH) SW 18 SW 12
VENT RATE (MPH-FT) 45000 37700
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
SUNNY. HIGHS IN THE LOWER 90S. SOUTHWEST WINDS 10 TO
15 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 70S.
SOUTHWEST WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY SUNNY. A CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE MORNING. HIGHS IN THE UPPER 80S. SOUTH WINDS AROUND 5 MPH,
BECOMING WEST IN THE AFTERNOON.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 70. EAST WINDS
AROUND 5 MPH.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 80S. NORTHEAST WINDS
AROUND 5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 60S. NORTHEAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE MID 80S. EAST WINDS AROUND
5 MPH.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S. EAST WINDS
AROUND 5 MPH.
SUNDAY
MOSTLY SUNNY. HIGHS IN THE MID 80S. SOUTHEAST WINDS
AROUND 5 MPH.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 60S. SOUTHEAST
WINDS AROUND 5 MPH.
ILZ021-312115-
GRUNDY-
INCLUDING THE CITIES OF MORRIS, COAL CITY, AND MINOOKA
409 AM CDT MON AUG 31 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER PCLDY PCLDY MCLEAR CLEAR
PRECIP TYPE TSTMS TSTMS NONE NONE
CHANCE PRECIP (%) 30 20 10
MAX TEMP (24HR TREND) 89 (+6) 91
MIN RH % (24HR TREND) 57 (-10) 56
MIN TEMP (24HR TREND) 72 (+2) 72
MAX RH % (24HR TREND) 82 (-18) 81
20FT WIND AM (MPH) SW 9 SW 6
20FT WIND PM (MPH) SW 9 S 5-6 SW 6 LGT/VAR
PEAK WIND GUSTS (MPH) 18
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 1300 1500
MAX MIXING HGT (FT) 2600 3500
TRANSPORT WND (MPH) SW 18 SW 12
VENT RATE (MPH-FT) 46800 45500
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
SUNNY. HIGHS IN THE LOWER 90S. SOUTHWEST WINDS
AROUND 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 70S. SOUTHWEST
WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 80S. SOUTH WINDS
AROUND 5 MPH, BECOMING WEST IN THE AFTERNOON.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 70S. LIGHT
WINDS.
FRIDAY
MOSTLY SUNNY. HIGHS AROUND 90. LIGHT WINDS, BECOMING
NORTHEAST AROUND 5 MPH IN THE AFTERNOON.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S. LIGHT WINDS.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 80S. LIGHT WINDS,
BECOMING EAST AROUND 5 MPH IN THE AFTERNOON.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S. LIGHT
WINDS.
SUNDAY
MOSTLY SUNNY. HIGHS IN THE MID 80S. EAST WINDS AROUND
5 MPH.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 60S. EAST WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
ILZ022-312115-
WILL-
INCLUDING THE CITIES OF JOLIET, BOLINGBROOK, AND WILMINGTON
409 AM CDT MON AUG 31 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER PCLDY PCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS NONE NONE
CHANCE PRECIP (%) 30 20 10
MAX TEMP (24HR TREND) 88 (+5) 90
MIN RH % (24HR TREND) 57 (-10) 57
MIN TEMP (24HR TREND) 72 (+2) 72
MAX RH % (24HR TREND) 83 (-14) 82
20FT WIND AM (MPH) SW 9-10 SW 6-7
20FT WIND PM (MPH) SW 9-10 S 6 SW 6-7 LGT/VAR
PEAK WIND GUSTS (MPH) 19
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 1300 1600
MAX MIXING HGT (FT) 2500 3200
TRANSPORT WND (MPH) SW 18 SW 12
VENT RATE (MPH-FT) 45000 41600
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
SUNNY. HIGHS IN THE LOWER 90S. SOUTHWEST WINDS 10 TO
15 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 70S.
SOUTHWEST WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 80S. NORTH WINDS
AROUND 5 MPH, BECOMING WEST IN THE AFTERNOON.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 70. NORTHEAST WINDS
AROUND 5 MPH.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 80S. NORTHEAST WINDS
AROUND 5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 60S. NORTHEAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE MID 80S. EAST WINDS AROUND
5 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 60S. EAST WINDS
AROUND 5 MPH.
SUNDAY
MOSTLY SUNNY. HIGHS IN THE MID 80S. EAST WINDS AROUND
5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 60S. EAST WINDS
AROUND 5 MPH.
ILZ032-312115-
LIVINGSTON-
INCLUDING THE CITIES OF PONTIAC, DWIGHT, AND FAIRBURY
409 AM CDT MON AUG 31 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER PCLDY MCLEAR MCLEAR CLEAR
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 10 10 10
MAX TEMP (24HR TREND) 90 (+6) 92
MIN RH % (24HR TREND) 55 (-10) 55
MIN TEMP (24HR TREND) 73 (+3) 73
MAX RH % (24HR TREND) 78 (-18) 79
20FT WIND AM (MPH) SW 8-9 SW 6
20FT WIND PM (MPH) SW 8-9 S 6-7 SW 6 LGT/VAR
PEAK WIND GUSTS (MPH) 18
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 1400 1500
MAX MIXING HGT (FT) 2500 4000
TRANSPORT WND (MPH) SW 18 SW 12
VENT RATE (MPH-FT) 45000 52000
VENT RATE CATEGORY POOR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
SUNNY. HIGHS IN THE MID 90S. SOUTHWEST WINDS AROUND
10 MPH.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 70S. SOUTHWEST
WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS AROUND 90. SOUTHWEST WINDS AROUND
5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 70S. LIGHT
WINDS.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 90S. SOUTH WINDS
AROUND 5 MPH, BECOMING NORTH IN THE AFTERNOON.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S. LIGHT WINDS.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 80S. LIGHT WINDS,
BECOMING EAST AROUND 5 MPH IN THE AFTERNOON.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S. LIGHT
WINDS.
SUNDAY
SUNNY. HIGHS IN THE MID 80S. EAST WINDS AROUND 5 MPH.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 60S. EAST WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
ILZ023-312115-
KANKAKEE-
INCLUDING THE CITIES OF KANKAKEE, BOURBONNAIS, AND BRADLEY
409 AM CDT MON AUG 31 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER PCLDY PCLDY MCLEAR CLEAR
PRECIP TYPE TSTMS NONE NONE NONE
CHANCE PRECIP (%) 20 10 10
MAX TEMP (24HR TREND) 89 (+6) 91
MIN RH % (24HR TREND) 54 (-12) 55
MIN TEMP (24HR TREND) 72 (+3) 72
MAX RH % (24HR TREND) 81 (-13) 80
20FT WIND AM (MPH) SW 8 SW 6
20FT WIND PM (MPH) SW 8 S 5 SW 6 LGT/VAR
PEAK WIND GUSTS (MPH) 17
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 1500 1600
MAX MIXING HGT (FT) 2500 3800
TRANSPORT WND (MPH) SW 19 SW 11
VENT RATE (MPH-FT) 50000 45600
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
SUNNY. HIGHS IN THE LOWER 90S. SOUTHWEST WINDS
AROUND 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 70S. SOUTHWEST
WINDS AROUND 5 MPH.
THURSDAY
PARTLY SUNNY IN THE MORNING THEN CLEARING. HIGHS
AROUND 90. SOUTHWEST WINDS AROUND 5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 60S. LIGHT
WINDS.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 80S. LIGHT WINDS,
BECOMING NORTHEAST AROUND 5 MPH IN THE AFTERNOON.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S. LIGHT WINDS.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 80S. LIGHT WINDS,
BECOMING EAST AROUND 5 MPH IN THE AFTERNOON.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 60S. LIGHT WINDS.
SUNDAY
SUNNY. HIGHS IN THE MID 80S. EAST WINDS AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 60S. EAST WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
ILZ039-312115-
FORD-
INCLUDING THE CITIES OF PAXTON AND GIBSON CITY
409 AM CDT MON AUG 31 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER MCLEAR MCLEAR MCLEAR CLEAR
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 10 10 10
MAX TEMP (24HR TREND) 89 (+4) 91
MIN RH % (24HR TREND) 55 (-7) 54
MIN TEMP (24HR TREND) 72 (+3) 73
MAX RH % (24HR TREND) 78 (-11) 78
20FT WIND AM (MPH) SW 8-9 SW 7
20FT WIND PM (MPH) SW 8-9 S 6-7 SW 7 LGT/VAR
PEAK WIND GUSTS (MPH) 17
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 1500 1600
MAX MIXING HGT (FT) 2400 4200
TRANSPORT WND (MPH) S 17 SW 12
VENT RATE (MPH-FT) 40800 54600
VENT RATE CATEGORY POOR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
SUNNY. HIGHS IN THE MID 90S. SOUTHWEST WINDS AROUND
10 MPH.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 70S. SOUTHWEST
WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 90S. SOUTHWEST WINDS
AROUND 5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 70S. LIGHT
WINDS, BECOMING SOUTHEAST AROUND 5 MPH AFTER MIDNIGHT.
FRIDAY
MOSTLY SUNNY. HIGHS AROUND 90. SOUTH WINDS AROUND
5 MPH, BECOMING NORTH IN THE AFTERNOON.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S. LIGHT WINDS.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 80S. LIGHT WINDS,
BECOMING EAST AROUND 5 MPH IN THE AFTERNOON.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 60S. EAST WINDS
AROUND 5 MPH.
SUNDAY
SUNNY. HIGHS IN THE MID 80S. EAST WINDS AROUND 5 MPH.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 60S. EAST WINDS
AROUND 5 MPH.
ILZ033-312115-
IROQUOIS-
INCLUDING THE CITIES OF WATSEKA AND GILMAN
409 AM CDT MON AUG 31 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER PCLDY MCLEAR MCLEAR CLEAR
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 10 10 10
MAX TEMP (24HR TREND) 89 (+5) 91
MIN RH % (24HR TREND) 54 (-8) 53
MIN TEMP (24HR TREND) 72 (+3) 73
MAX RH % (24HR TREND) 80 (-11) 81
20FT WIND AM (MPH) SW 8 SW 6
20FT WIND PM (MPH) SW 8 S 5-6 SW 6 LGT/VAR
PEAK WIND GUSTS (MPH) 16
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 1500 1600
MAX MIXING HGT (FT) 2500 4200
TRANSPORT WND (MPH) SW 18 SW 11
VENT RATE (MPH-FT) 45000 50400
VENT RATE CATEGORY POOR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
SUNNY. HIGHS IN THE MID 90S. SOUTHWEST WINDS AROUND
10 MPH.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 70S. SOUTHWEST
WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 90S. SOUTHWEST WINDS
AROUND 5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 70. LIGHT WINDS.
FRIDAY
MOSTLY SUNNY. HIGHS AROUND 90. LIGHT WINDS.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S. LIGHT WINDS.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 80S. LIGHT WINDS.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 60S. LIGHT WINDS.
SUNDAY
SUNNY. HIGHS IN THE MID 80S. EAST WINDS AROUND 5 MPH.
SUNDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 60S. LIGHT WINDS.
INZ010-312115-
NEWTON-
INCLUDING THE CITIES OF ROSELAWN, KENTLAND, AND MOROCCO
409 AM CDT MON AUG 31 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER PCLDY PCLDY MCLEAR CLEAR
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 20 10 10
MAX TEMP (24HR TREND) 88 (+5) 90
MIN RH % (24HR TREND) 56 (-7) 55
MIN TEMP (24HR TREND) 72 (+3) 73
MAX RH % (24HR TREND) 80 (-19) 81
20FT WIND AM (MPH) SW 8 SW 6-7
20FT WIND PM (MPH) SW 8 S 5-6 SW 6-7 LGT/VAR
PEAK WIND GUSTS (MPH) 17
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 1400 1700
MAX MIXING HGT (FT) 2600 4200
TRANSPORT WND (MPH) SW 19 SW 11
VENT RATE (MPH-FT) 52000 50400
VENT RATE CATEGORY FAIR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
SUNNY. HIGHS IN THE LOWER 90S. SOUTHWEST WINDS
AROUND 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 70S.
SOUTHWEST WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS AROUND 90. SOUTHWEST WINDS AROUND
5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 60S. LIGHT
WINDS.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 80S. LIGHT WINDS,
BECOMING NORTH AROUND 5 MPH IN THE AFTERNOON.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S. LIGHT WINDS.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE MID 80S. LIGHT WINDS,
BECOMING EAST AROUND 5 MPH IN THE AFTERNOON.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 60S. LIGHT
WINDS.
SUNDAY
MOSTLY SUNNY. HIGHS IN THE MID 80S. EAST WINDS AROUND
5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 60S. LIGHT
WINDS.
INZ011-312115-
JASPER-
INCLUDING THE CITIES OF RENSSELAER AND DEMOTTE
409 AM CDT MON AUG 31 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER PCLDY PCLDY MCLEAR CLEAR
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 20 10 10
MAX TEMP (24HR TREND) 87 (+4) 90
MIN RH % (24HR TREND) 56 (-7) 56
MIN TEMP (24HR TREND) 72 (+3) 73
MAX RH % (24HR TREND) 80 (-18) 81
20FT WIND AM (MPH) SW 8-9 SW 6-7
20FT WIND PM (MPH) SW 8-9 SW 5-6 SW 6-7 LGT/VAR
PEAK WIND GUSTS (MPH) 17
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 1500 1800
MAX MIXING HGT (FT) 2800 4100
TRANSPORT WND (MPH) SW 19 SW 11
VENT RATE (MPH-FT) 56000 49200
VENT RATE CATEGORY FAIR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
SUNNY. HIGHS IN THE LOWER 90S. SOUTHWEST WINDS
AROUND 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 70S.
SOUTHWEST WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS AROUND 90. SOUTH WINDS AROUND
5 MPH, BECOMING WEST IN THE AFTERNOON.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 60S. LIGHT
WINDS.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 80S. EAST WINDS AROUND
5 MPH, BECOMING NORTH IN THE AFTERNOON.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S. LIGHT WINDS.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE MID 80S. NORTHEAST WINDS
AROUND 5 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 60S. EAST WINDS
AROUND 5 MPH.
SUNDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. EAST WINDS AROUND
5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 60S. EAST WINDS
AROUND 5 MPH.
INZ019-312115-
BENTON-
INCLUDING THE CITIES OF FOWLER AND OXFORD
509 AM EDT MON AUG 31 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER PCLDY MCLEAR MCLEAR CLEAR
PRECIP TYPE NONE NONE NONE NONE
CHANCE PRECIP (%) 10 10 10
MAX TEMP (24HR TREND) 87 (+4) 89
MIN RH % (24HR TREND) 58 (-3) 57
MIN TEMP (24HR TREND) 72 (+3) 73
MAX RH % (24HR TREND) 83 (-11) 81
20FT WIND AM (MPH) SW 8 SW 6
20FT WIND PM (MPH) SW 8 S 5-6 SW 6 LGT/VAR
PEAK WIND GUSTS (MPH) 17
PRECIP AMOUNT (IN) 0.00 0.00 0.00 0.00
11 AM MIXING HGT (FT) 1500 1600
MAX MIXING HGT (FT) 2700 4100
TRANSPORT WND (MPH) SW 18 SW 11
VENT RATE (MPH-FT) 48600 49200
VENT RATE CATEGORY FAIR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
SUNNY. HIGHS IN THE LOWER 90S. SOUTHWEST WINDS
AROUND 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 70S. SOUTHWEST
WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS AROUND 90. SOUTHWEST WINDS AROUND
5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 70S. LIGHT
WINDS.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 80S. LIGHT WINDS.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 60S. LIGHT WINDS.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE MID 80S. LIGHT WINDS.
SATURDAY NIGHT
MOSTLY CLEAR. LOWS IN THE MID 60S. LIGHT WINDS.
SUNDAY
SUNNY. HIGHS IN THE MID 80S. EAST WINDS AROUND 5 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 60S. LIGHT
WINDS.
DK
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