387
FNUS53 KLOT 150736
FWFLOT
FIRE WEATHER PLANNING FORECAST FOR NORTHERN IL AND NORTHWEST IN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
236 AM CDT SAT AUG 15 2026
DISCUSSION
SHOWERS AND THUNDERSTORMS WILL SPREAD ACROSS NORTHERN IL AND
NORTHWEST IN THIS MORNING AND RESULT IN A PERIOD OF HEAVY
RAINFALL, ESPECIALLY SOUTH OF I-80 WHERE RAINFALL AMOUNTS IN
EXCESS OF 2-4 INCHES ARE POSSIBLE. MOSTLY DRY CONDITIONS ARE
EXPECTED THIS AFTERNOON, HOWEVER, THERE IS A 15% CHANCE FOR AN
ISOLATED SHOWER OR TWO. ADDITIONAL SHOWERS AND THUNDERSTORMS ARE
EXPECTED TO OCCUR WITH A COLD FRONT TONIGHT INTO SUNDAY MORNING, A
FEW OF WHICH COULD BE STRONG WITH GUSTY WINDS AND HEAVY RAINFALL.
DRIER CONDITIONS ARE EXPECTED TO SETTLE IN FROM NORTHWEST TO
SOUTHEAST SUNDAY AFTERNOON AND PERSIST THROUGH TUESDAY AFTERNOON.
HOWEVER, RAIN CHANCES ARE FORECAST TO RETURN TUESDAY NIGHT INTO
WEDNESDAY AS YET ANOTHER STORM SYSTEM MOVES THROUGH. OTHERWISE,
EXPECT SEASONABLE TEMPERATURES IN THE 80S THROUGH THE WEEK.
ILZ014-152115-
COOK-
INCLUDING THE CITIES OF CHICAGO, SCHAUMBURG, EVANSTON, OAK LAWN,
LEMONT, ORLAND PARK, AND PARK FOREST
236 AM CDT SAT AUG 15 2026
TODAY TONIGHT SUN SUN NIGHT
CLOUD COVER CLOUDY PCLDY MCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS NONE
CHANCE PRECIP (%) 90 40 40 10
MAX TEMP (24HR TREND) 81 (+2) 84
MIN RH % (24HR TREND) 80 (+6) 69
MIN TEMP (24HR TREND) 72 (+1) 65
MAX RH % (24HR TREND) 100 (+4) 96
20FT WIND AM (MPH) SE 7 W 8-10
20FT WIND PM (MPH) SW 7 LGT/VAR NW 8-10 NW 6-7
PEAK WIND GUSTS (MPH) 16
PRECIP AMOUNT (IN) 0.50-0.75 0.25-0.50 0.05-0.10 0.00
11 AM MIXING HGT (FT) 1300 2600
MAX MIXING HGT (FT) 2200 4000
TRANSPORT WND (MPH) SW 9 NW 13
VENT RATE (MPH-FT) 19800 56000
VENT RATE CATEGORY POOR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
MONDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 70S. NORTH WINDS
AROUND 5 MPH.
MONDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 60S. LIGHT WINDS,
BECOMING SOUTH AROUND 5 MPH AFTER MIDNIGHT.
TUESDAY
PARTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS
5 TO 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE
EVENING, THEN SHOWERS LIKELY AND A CHANCE OF THUNDERSTORMS AFTER
MIDNIGHT. LOWS IN THE UPPER 60S. SOUTH WINDS AROUND 5 MPH.
WEDNESDAY
PARTLY SUNNY. A CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE MORNING. HIGHS IN THE UPPER 70S. SOUTHWEST WINDS AROUND
10 MPH, BECOMING NORTHWEST IN THE AFTERNOON.
WEDNESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE LOWER 60S. NORTH WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 70S. NORTH WINDS
AROUND 5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. NORTHEAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S. SOUTHEAST WINDS
AROUND 5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 60S. EAST WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
ILZ006-152115-
LAKE IL-
INCLUDING THE CITIES OF WAUKEGAN, BUFFALO GROVE, MUNDELEIN,
AND GURNEE
236 AM CDT SAT AUG 15 2026
TODAY TONIGHT SUN SUN NIGHT
CLOUD COVER MCLDY MCLDY PCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS NONE
CHANCE PRECIP (%) 70 40 40
MAX TEMP (24HR TREND) 80 (+2) 83
MIN RH % (24HR TREND) 83 (+13) 70
MIN TEMP (24HR TREND) 70 (+1) 63
MAX RH % (24HR TREND) 100 (+3) 99
20FT WIND AM (MPH) SE 6-7 W 8-10
20FT WIND PM (MPH) S 6-7 LGT/VAR NW 8-10 NW 5-7
PEAK WIND GUSTS (MPH) 17
PRECIP AMOUNT (IN) 0.25-0.50 0.25-0.50 0.01-0.05 0.00
11 AM MIXING HGT (FT) 1300 2600
MAX MIXING HGT (FT) 2000 3600
TRANSPORT WND (MPH) S 5 NW 13
VENT RATE (MPH-FT) 12000 50400
VENT RATE CATEGORY POOR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
MONDAY
SUNNY. HIGHS IN THE UPPER 70S. NORTH WINDS AROUND
5 MPH.
MONDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 60S. EAST WINDS
AROUND 5 MPH, BECOMING SOUTHWEST AFTER MIDNIGHT.
TUESDAY
PARTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS
5 TO 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF THUNDERSTORMS. A
CHANCE OF SHOWERS IN THE EVENING, THEN SHOWERS LIKELY AFTER
MIDNIGHT. LOWS IN THE MID 60S. SOUTHWEST WINDS AROUND 5 MPH.
WEDNESDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE MORNING. HIGHS IN THE UPPER 70S. SOUTHWEST WINDS AROUND
10 MPH, BECOMING NORTHWEST IN THE AFTERNOON.
WEDNESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE UPPER 50S. NORTH WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 70S. NORTH WINDS
AROUND 5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. LIGHT
WINDS.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S. SOUTHWEST WINDS
AROUND 5 MPH, BECOMING SOUTHEAST IN THE AFTERNOON.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. LIGHT
WINDS.
INZ001-152115-
LAKE IN-
INCLUDING THE CITIES OF GARY, HAMMOND, AND MERRILLVILLE
236 AM CDT SAT AUG 15 2026
TODAY TONIGHT SUN SUN NIGHT
CLOUD COVER CLOUDY PCLDY MCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS NONE
CHANCE PRECIP (%) 90 40 40 10
MAX TEMP (24HR TREND) 80 (+2) 83
MIN RH % (24HR TREND) 82 (+2) 75
MIN TEMP (24HR TREND) 71 (+1) 65
MAX RH % (24HR TREND) 100 (+1) 100
20FT WIND AM (MPH) SE 7-8 W 8
20FT WIND PM (MPH) SW 7-8 LGT/VAR NW 8 NW 5-6
PEAK WIND GUSTS (MPH) 15 15
PRECIP AMOUNT (IN) 1.00-1.50 0.10-0.25 0.10-0.25 0.00
11 AM MIXING HGT (FT) 1300 2100
MAX MIXING HGT (FT) 2000 3200
TRANSPORT WND (MPH) SW 11 W 11
VENT RATE (MPH-FT) 24000 38400
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
MONDAY
SUNNY. HIGHS IN THE UPPER 70S. NORTH WINDS AROUND
5 MPH.
MONDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 60S. LIGHT WINDS.
TUESDAY
MOSTLY SUNNY. HIGHS AROUND 80. SOUTHWEST WINDS AROUND
5 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS AFTER
MIDNIGHT. LOWS IN THE MID 60S. SOUTH WINDS AROUND 5 MPH.
WEDNESDAY
PARTLY SUNNY WITH A CHANCE OF SHOWERS AND
THUNDERSTORMS. HIGHS IN THE UPPER 70S. SOUTHWEST WINDS AROUND
10 MPH, BECOMING NORTHWEST IN THE AFTERNOON.
WEDNESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS AROUND 60. NORTH WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 70S. NORTH WINDS
AROUND 5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. NORTH
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 70S. SOUTHEAST WINDS
AROUND 5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. LIGHT
WINDS.
INZ002-152115-
PORTER-
INCLUDING THE CITIES OF PORTAGE, VALPARAISO, AND CHESTERTON
236 AM CDT SAT AUG 15 2026
TODAY TONIGHT SUN SUN NIGHT
CLOUD COVER CLOUDY MCLDY MCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS NONE
CHANCE PRECIP (%) 90 40 40 10
MAX TEMP (24HR TREND) 80 (+1) 83
MIN RH % (24HR TREND) 83 (+3) 78
MIN TEMP (24HR TREND) 71 (+1) 66
MAX RH % (24HR TREND) 100 (0) 100
20FT WIND AM (MPH) SE 7-8 W 8
20FT WIND PM (MPH) S 7-8 LGT/VAR NW 8 NW 5-6
PEAK WIND GUSTS (MPH) 15
PRECIP AMOUNT (IN) 1.00-1.50 0.10-0.25 0.10-0.25 0.00
11 AM MIXING HGT (FT) 1300 2100
MAX MIXING HGT (FT) 1700 2900
TRANSPORT WND (MPH) SW 11 NW 10
VENT RATE (MPH-FT) 20400 29000
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
MONDAY
SUNNY. HIGHS IN THE UPPER 70S. NORTH WINDS AROUND
5 MPH.
MONDAY NIGHT
MOSTLY CLEAR. LOWS AROUND 60. LIGHT WINDS,
BECOMING SOUTH AROUND 5 MPH AFTER MIDNIGHT.
TUESDAY
MOSTLY SUNNY. HIGHS AROUND 80. SOUTHWEST WINDS AROUND
5 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS AFTER
MIDNIGHT. LOWS IN THE MID 60S. SOUTH WINDS AROUND 5 MPH.
WEDNESDAY
PARTLY SUNNY WITH A CHANCE OF SHOWERS AND
THUNDERSTORMS. HIGHS IN THE UPPER 70S. SOUTHWEST WINDS AROUND
10 MPH, BECOMING NORTHWEST IN THE AFTERNOON.
WEDNESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS AROUND 60. NORTH WINDS AROUND 5 MPH.
THURSDAY
PARTLY SUNNY. HIGHS IN THE LOWER 70S. NORTH WINDS
AROUND 5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. NORTH WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 70S. SOUTHEAST WINDS
AROUND 5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. LIGHT
WINDS.
ILZ013-152115-
DUPAGE-
INCLUDING THE CITIES OF NAPERVILLE, WHEATON, DOWNERS GROVE,
LOMBARD, AND CAROL STREAM
236 AM CDT SAT AUG 15 2026
TODAY TONIGHT SUN SUN NIGHT
CLOUD COVER CLOUDY PCLDY MCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS TSTMS NONE
CHANCE PRECIP (%) 90 40 40
MAX TEMP (24HR TREND) 81 (+1) 84
MIN RH % (24HR TREND) 80 (+9) 71
MIN TEMP (24HR TREND) 71 (0) 65
MAX RH % (24HR TREND) 100 (+4) 96
20FT WIND AM (MPH) SE 6 W 8-10
20FT WIND PM (MPH) SW 6 LGT/VAR NW 8-10 NW 5-6
PEAK WIND GUSTS (MPH) 16
PRECIP AMOUNT (IN) 0.50-0.75 0.25-0.50 0.10-0.25 0.00
11 AM MIXING HGT (FT) 1200 2400
MAX MIXING HGT (FT) 2300 3400
TRANSPORT WND (MPH) SW 9 NW 13
VENT RATE (MPH-FT) 20700 47600
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
MONDAY
MOSTLY SUNNY. HIGHS AROUND 80. NORTH WINDS AROUND
5 MPH, BECOMING NORTHWEST IN THE AFTERNOON.
MONDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 60S. LIGHT
WINDS, BECOMING SOUTH AROUND 5 MPH AFTER MIDNIGHT.
TUESDAY
PARTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS
5 TO 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF THUNDERSTORMS. A
CHANCE OF SHOWERS IN THE EVENING, THEN SHOWERS LIKELY AFTER
MIDNIGHT. LOWS IN THE UPPER 60S. SOUTH WINDS 5 TO 10 MPH.
WEDNESDAY
PARTLY SUNNY. A CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE MORNING. HIGHS IN THE UPPER 70S. SOUTHWEST WINDS AROUND
10 MPH, BECOMING NORTHWEST IN THE AFTERNOON.
WEDNESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS AROUND 60. NORTH WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S. NORTH WINDS
AROUND 5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. NORTH
WINDS AROUND 5 MPH.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S. NORTH WINDS AROUND
5 MPH, BECOMING SOUTHEAST IN THE AFTERNOON.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 60. NORTHEAST WINDS
AROUND 5 MPH.
ILZ012-152115-
KANE-
INCLUDING THE CITIES OF AURORA AND ELGIN
236 AM CDT SAT AUG 15 2026
TODAY TONIGHT SUN SUN NIGHT
CLOUD COVER MCLDY MCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS TSTMS NONE
CHANCE PRECIP (%) 90 40 40
MAX TEMP (24HR TREND) 81 (+1) 83
MIN RH % (24HR TREND) 81 (+10) 74
MIN TEMP (24HR TREND) 71 (+2) 63
MAX RH % (24HR TREND) 100 (+2) 97
20FT WIND AM (MPH) SE 5-6 W 8-10
20FT WIND PM (MPH) SW 5-6 LGT/VAR NW 8-10 NW 5-7
PEAK WIND GUSTS (MPH) 16
PRECIP AMOUNT (IN) 0.25-0.50 0.25-0.50 0.10-0.25 0.00
11 AM MIXING HGT (FT) 1100 2200
MAX MIXING HGT (FT) 2400 3000
TRANSPORT WND (MPH) SW 9 NW 13
VENT RATE (MPH-FT) 21600 42000
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
MONDAY
SUNNY. HIGHS IN THE UPPER 70S. NORTH WINDS AROUND
5 MPH, BECOMING NORTHWEST IN THE AFTERNOON.
MONDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 60S. LIGHT
WINDS, BECOMING SOUTHWEST AROUND 5 MPH AFTER MIDNIGHT.
TUESDAY
PARTLY SUNNY. HIGHS AROUND 80. SOUTHWEST WINDS 5 TO
10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF THUNDERSTORMS. A
CHANCE OF SHOWERS IN THE EVENING, THEN SHOWERS LIKELY AFTER
MIDNIGHT. LOWS IN THE MID 60S. SOUTH WINDS 5 TO 10 MPH.
WEDNESDAY
PARTLY SUNNY. A CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE MORNING. HIGHS IN THE UPPER 70S. SOUTHWEST WINDS AROUND
10 MPH, BECOMING NORTHWEST IN THE AFTERNOON.
WEDNESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE UPPER 50S. NORTH WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 70S. NORTH WINDS
AROUND 5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. NORTHEAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S. NORTHEAST WINDS
AROUND 5 MPH, BECOMING SOUTHEAST IN THE AFTERNOON.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. LIGHT
WINDS.
ILZ005-152115-
MCHENRY-
INCLUDING THE CITIES OF CRYSTAL LAKE, ALGONQUIN, MCHENRY,
AND WOODSTOCK
236 AM CDT SAT AUG 15 2026
TODAY TONIGHT SUN SUN NIGHT
CLOUD COVER MCLDY MCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS NONE NONE
CHANCE PRECIP (%) 70 40 30
MAX TEMP (24HR TREND) 80 (+1) 83
MIN RH % (24HR TREND) 83 (+16) 71
MIN TEMP (24HR TREND) 70 (+2) 62
MAX RH % (24HR TREND) 100 (+4) 99
20FT WIND AM (MPH) SE 5-6 W 8-10
20FT WIND PM (MPH) S 5-6 LGT/VAR NW 8-10 LGT/VAR
PEAK WIND GUSTS (MPH) 17
PRECIP AMOUNT (IN) 0.25-0.50 0.25-0.50 0.00 0.00
11 AM MIXING HGT (FT) 1400 2400
MAX MIXING HGT (FT) 2300 3200
TRANSPORT WND (MPH) S 6 NW 14
VENT RATE (MPH-FT) 16100 48000
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
MONDAY
SUNNY. HIGHS IN THE UPPER 70S. NORTH WINDS AROUND
5 MPH, BECOMING NORTHWEST IN THE AFTERNOON.
MONDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 60S. LIGHT
WINDS, BECOMING SOUTHWEST AROUND 5 MPH AFTER MIDNIGHT.
TUESDAY
PARTLY SUNNY. HIGHS AROUND 80. SOUTHWEST WINDS 5 TO
10 MPH.
TUESDAY NIGHT
A CHANCE OF THUNDERSTORMS. A CHANCE OF SHOWERS
IN THE EVENING, THEN SHOWERS AFTER MIDNIGHT. LOWS IN THE MID 60S.
SOUTHWEST WINDS AROUND 5 MPH.
WEDNESDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE MORNING. HIGHS IN THE UPPER 70S. WEST WINDS AROUND 5 MPH,
BECOMING NORTHWEST IN THE AFTERNOON.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. NORTH
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 70S. NORTH WINDS
AROUND 5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. LIGHT
WINDS.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S. SOUTHEAST WINDS
AROUND 5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. LIGHT
WINDS.
ILZ004-152115-
BOONE-
INCLUDING THE CITY OF BELVIDERE
236 AM CDT SAT AUG 15 2026
TODAY TONIGHT SUN SUN NIGHT
CLOUD COVER MCLDY MCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS NONE NONE
CHANCE PRECIP (%) 60 30 20
MAX TEMP (24HR TREND) 81 (+1) 82
MIN RH % (24HR TREND) 82 (+18) 68
MIN TEMP (24HR TREND) 70 (+2) 61
MAX RH % (24HR TREND) 100 (+4) 98
20FT WIND AM (MPH) SE 5 NW 8-10
20FT WIND PM (MPH) S 5 LGT/VAR NW 8-10 LGT/VAR
PEAK WIND GUSTS (MPH) 17
PRECIP AMOUNT (IN) 0.10-0.25 0.25-0.50 0.00 0.00
11 AM MIXING HGT (FT) 1400 2200
MAX MIXING HGT (FT) 2400 2900
TRANSPORT WND (MPH) SW 8 NW 13
VENT RATE (MPH-FT) 19200 40600
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
MONDAY
SUNNY. HIGHS IN THE UPPER 70S. LIGHT WINDS, BECOMING
NORTHWEST AROUND 5 MPH IN THE AFTERNOON.
MONDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 60S. LIGHT
WINDS.
TUESDAY
PARTLY SUNNY. HIGHS AROUND 80. SOUTHWEST WINDS 5 TO
10 MPH.
TUESDAY NIGHT
A CHANCE OF THUNDERSTORMS. A CHANCE OF SHOWERS
IN THE EVENING, THEN SHOWERS AFTER MIDNIGHT. LOWS IN THE MID 60S.
SOUTHWEST WINDS AROUND 5 MPH.
WEDNESDAY
PARTLY SUNNY. A CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE MORNING. HIGHS IN THE UPPER 70S. NORTHWEST WINDS AROUND
10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. NORTH
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 70S. NORTHEAST WINDS
AROUND 5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. LIGHT
WINDS.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S. NORTHEAST WINDS
AROUND 5 MPH, BECOMING SOUTH IN THE AFTERNOON.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. LIGHT WINDS.
ILZ011-152115-
DE KALB-
INCLUDING THE CITIES OF DEKALB AND SYCAMORE
236 AM CDT SAT AUG 15 2026
TODAY TONIGHT SUN SUN NIGHT
CLOUD COVER MCLDY MCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS TSTMS NONE
CHANCE PRECIP (%) 80 40 30
MAX TEMP (24HR TREND) 81 (+2) 82
MIN RH % (24HR TREND) 81 (+8) 73
MIN TEMP (24HR TREND) 71 (+2) 62
MAX RH % (24HR TREND) 100 (+1) 97
20FT WIND AM (MPH) SE 5-6 W 8-10
20FT WIND PM (MPH) SW 5-6 LGT/VAR NW 8-10 NW 5-6
PEAK WIND GUSTS (MPH) 16
PRECIP AMOUNT (IN) 0.25-0.50 0.25-0.50 0.05-0.10 0.00
11 AM MIXING HGT (FT) 1300 2100
MAX MIXING HGT (FT) 2400 3000
TRANSPORT WND (MPH) SW 9 NW 13
VENT RATE (MPH-FT) 21600 42000
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
MONDAY
SUNNY. HIGHS AROUND 80. NORTH WINDS AROUND 5 MPH,
BECOMING NORTHWEST IN THE AFTERNOON.
MONDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 60S. LIGHT WINDS,
BECOMING SOUTH AROUND 5 MPH AFTER MIDNIGHT.
TUESDAY
PARTLY SUNNY. HIGHS AROUND 80. SOUTHWEST WINDS 5 TO
10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF THUNDERSTORMS. A
CHANCE OF SHOWERS IN THE EVENING, THEN SHOWERS LIKELY AFTER
MIDNIGHT. LOWS IN THE MID 60S. SOUTH WINDS 5 TO 10 MPH.
WEDNESDAY
PARTLY SUNNY. A CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE MORNING. HIGHS IN THE UPPER 70S. WEST WINDS AROUND 10 MPH,
BECOMING NORTHWEST IN THE AFTERNOON.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. NORTH
WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S. NORTH WINDS
AROUND 5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. NORTHEAST
WINDS AROUND 5 MPH.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S. NORTH WINDS AROUND
5 MPH, BECOMING EAST IN THE AFTERNOON.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. SOUTHEAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
ILZ003-152115-
WINNEBAGO-
INCLUDING THE CITY OF ROCKFORD
236 AM CDT SAT AUG 15 2026
TODAY TONIGHT SUN SUN NIGHT
CLOUD COVER MCLDY MCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS NONE NONE
CHANCE PRECIP (%) 60 40 20
MAX TEMP (24HR TREND) 81 (+1) 83
MIN RH % (24HR TREND) 79 (+14) 65
MIN TEMP (24HR TREND) 70 (+3) 60
MAX RH % (24HR TREND) 100 (+3) 99
20FT WIND AM (MPH) SE 5 NW 8-11
20FT WIND PM (MPH) S 5 LGT/VAR NW 8-11 LGT/VAR
PEAK WIND GUSTS (MPH) 17
PRECIP AMOUNT (IN) 0.10-0.25 0.25-0.50 0.00 0.00
11 AM MIXING HGT (FT) 1400 2400
MAX MIXING HGT (FT) 2600 3200
TRANSPORT WND (MPH) S 6 NW 14
VENT RATE (MPH-FT) 18200 48000
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
MONDAY
SUNNY. HIGHS AROUND 80. NORTH WINDS AROUND 5 MPH,
BECOMING NORTHWEST IN THE AFTERNOON.
MONDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 60S. LIGHT
WINDS, BECOMING SOUTHWEST AROUND 5 MPH AFTER MIDNIGHT.
TUESDAY
PARTLY SUNNY. HIGHS AROUND 80. SOUTHWEST WINDS 5 TO
10 MPH.
TUESDAY NIGHT
A CHANCE OF THUNDERSTORMS. SHOWERS. LOWS IN THE
MID 60S. SOUTHWEST WINDS AROUND 5 MPH.
WEDNESDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE MORNING. HIGHS IN THE UPPER 70S. NORTHWEST WINDS AROUND
10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. NORTH
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
THURSDAY
PARTLY SUNNY. HIGHS IN THE LOWER 70S. NORTH WINDS
AROUND 5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. LIGHT
WINDS.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S. NORTH WINDS AROUND
5 MPH, BECOMING SOUTH IN THE AFTERNOON.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. LIGHT WINDS.
ILZ008-152115-
OGLE-
INCLUDING THE CITIES OF ROCHELLE, OREGON, AND BYRON
236 AM CDT SAT AUG 15 2026
TODAY TONIGHT SUN SUN NIGHT
CLOUD COVER MCLDY MCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS NONE NONE
CHANCE PRECIP (%) 70 40 20
MAX TEMP (24HR TREND) 81 (+3) 82
MIN RH % (24HR TREND) 80 (+8) 68
MIN TEMP (24HR TREND) 70 (+1) 61
MAX RH % (24HR TREND) 100 (+1) 97
20FT WIND AM (MPH) LGT/VAR NW 8-10
20FT WIND PM (MPH) SW 4-5 LGT/VAR NW 8-10 NW 5-7
PEAK WIND GUSTS (MPH) 17
PRECIP AMOUNT (IN) 0.25-0.50 0.25-0.50 0.00 0.00
11 AM MIXING HGT (FT) 1300 2200
MAX MIXING HGT (FT) 2500 3200
TRANSPORT WND (MPH) SW 8 NW 14
VENT RATE (MPH-FT) 20000 48000
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
MONDAY
SUNNY. HIGHS AROUND 80. NORTHWEST WINDS AROUND 5 MPH.
MONDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 60S. LIGHT WINDS.
TUESDAY
PARTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS
5 TO 10 MPH.
TUESDAY NIGHT
A CHANCE OF THUNDERSTORMS. A CHANCE OF SHOWERS
IN THE EVENING, THEN SHOWERS AFTER MIDNIGHT. LOWS IN THE MID 60S.
SOUTH WINDS AROUND 5 MPH.
WEDNESDAY
PARTLY SUNNY. A CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE MORNING. HIGHS IN THE UPPER 70S. WEST WINDS AROUND 10 MPH,
BECOMING NORTHWEST IN THE AFTERNOON.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. NORTH
WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S. NORTHEAST WINDS
AROUND 5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. LIGHT
WINDS.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S. NORTHEAST WINDS
AROUND 5 MPH, BECOMING SOUTHEAST IN THE AFTERNOON.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. LIGHT
WINDS.
ILZ010-152115-
LEE-
INCLUDING THE CITY OF DIXON
236 AM CDT SAT AUG 15 2026
TODAY TONIGHT SUN SUN NIGHT
CLOUD COVER MCLDY MCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS NONE NONE
CHANCE PRECIP (%) 80 40 30
MAX TEMP (24HR TREND) 82 (+4) 82
MIN RH % (24HR TREND) 83 (+4) 71
MIN TEMP (24HR TREND) 71 (+1) 61
MAX RH % (24HR TREND) 100 (0) 98
20FT WIND AM (MPH) S 5 NW 8-10
20FT WIND PM (MPH) SW 5 LGT/VAR NW 8-10 NW 5-7
PEAK WIND GUSTS (MPH) 16
PRECIP AMOUNT (IN) 0.25-0.50 0.25-0.50 0.00 0.00
11 AM MIXING HGT (FT) 1500 2100
MAX MIXING HGT (FT) 2500 3000
TRANSPORT WND (MPH) SW 10 NW 13
VENT RATE (MPH-FT) 25000 42000
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
MONDAY
SUNNY. HIGHS AROUND 80. NORTH WINDS AROUND 5 MPH.
MONDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 60S. LIGHT WINDS.
TUESDAY
PARTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS
5 TO 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE
EVENING, THEN SHOWERS LIKELY AND A CHANCE OF THUNDERSTORMS AFTER
MIDNIGHT. LOWS IN THE MID 60S. SOUTH WINDS 5 TO 10 MPH.
WEDNESDAY
PARTLY SUNNY. A CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE MORNING. HIGHS IN THE UPPER 70S. WEST WINDS AROUND 10 MPH,
BECOMING NORTHWEST IN THE AFTERNOON.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. NORTH
WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S. NORTHEAST WINDS
AROUND 5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. NORTHEAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S. NORTHEAST WINDS
AROUND 5 MPH, BECOMING EAST IN THE AFTERNOON.
FRIDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 50S. LIGHT WINDS.
ILZ019-152115-
LA SALLE-
INCLUDING THE CITIES OF OTTAWA, STREATOR, LA SALLE, MENDOTA,
AND MARSEILLES
236 AM CDT SAT AUG 15 2026
TODAY TONIGHT SUN SUN NIGHT
CLOUD COVER MCLDY PCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS TSTMS NONE
CHANCE PRECIP (%) 100 40 40 10
MAX TEMP (24HR TREND) 83 (+4) 84
MIN RH % (24HR TREND) 81 (0) 74
MIN TEMP (24HR TREND) 72 (0) 64
MAX RH % (24HR TREND) 100 (+2) 93
20FT WIND AM (MPH) S 6-7 W 8-9
20FT WIND PM (MPH) SW 6-7 LGT/VAR NW 8-9 NW 5-6
PEAK WIND GUSTS (MPH) 16
PRECIP AMOUNT (IN) 0.75-1.00 0.10-0.25 0.01-0.05 0.00
11 AM MIXING HGT (FT) 1500 2200
MAX MIXING HGT (FT) 2500 3100
TRANSPORT WND (MPH) SW 10 NW 13
VENT RATE (MPH-FT) 25000 43400
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
MONDAY
SUNNY. HIGHS IN THE LOWER 80S. NORTH WINDS AROUND
5 MPH.
MONDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 60S. LIGHT WINDS.
TUESDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS
AROUND 5 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE
EVENING, THEN SHOWERS LIKELY AFTER MIDNIGHT. LOWS IN THE UPPER
60S. SOUTH WINDS 5 TO 10 MPH.
WEDNESDAY
PARTLY SUNNY. A CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE MORNING. HIGHS AROUND 80. SOUTHWEST WINDS AROUND 10 MPH,
BECOMING NORTHWEST IN THE AFTERNOON.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 60S. NORTH
WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S. NORTHEAST WINDS
AROUND 5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. NORTHEAST
WINDS AROUND 5 MPH.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S. NORTHEAST WINDS
AROUND 5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 60. LIGHT WINDS.
ILZ020-152115-
KENDALL-
INCLUDING THE CITIES OF OSWEGO, YORKVILLE, AND PLANO
236 AM CDT SAT AUG 15 2026
TODAY TONIGHT SUN SUN NIGHT
CLOUD COVER MCLDY PCLDY PCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS TSTMS NONE
CHANCE PRECIP (%) 90 40 40 10
MAX TEMP (24HR TREND) 82 (+2) 83
MIN RH % (24HR TREND) 81 (+4) 75
MIN TEMP (24HR TREND) 71 (0) 64
MAX RH % (24HR TREND) 100 (+1) 96
20FT WIND AM (MPH) S 6-7 W 8-10
20FT WIND PM (MPH) SW 6-7 LGT/VAR NW 8-10 NW 5-7
PEAK WIND GUSTS (MPH) 16
PRECIP AMOUNT (IN) 0.75-1.00 0.25-0.50 0.05-0.10 0.00
11 AM MIXING HGT (FT) 1400 2100
MAX MIXING HGT (FT) 2500 3100
TRANSPORT WND (MPH) SW 11 NW 13
VENT RATE (MPH-FT) 30000 43400
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
MONDAY
SUNNY. HIGHS AROUND 80. NORTH WINDS AROUND 5 MPH.
MONDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 60S. LIGHT WINDS.
TUESDAY
PARTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS
5 TO 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF THUNDERSTORMS. A
CHANCE OF SHOWERS IN THE EVENING, THEN SHOWERS LIKELY AFTER
MIDNIGHT. LOWS IN THE UPPER 60S. SOUTH WINDS 5 TO 10 MPH.
WEDNESDAY
PARTLY SUNNY. A CHANCE OF SHOWERS AND THUNDERSTORMS
IN THE MORNING. HIGHS IN THE UPPER 70S. SOUTHWEST WINDS AROUND
10 MPH, BECOMING NORTHWEST IN THE AFTERNOON.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 60. NORTH WINDS
AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S. NORTH WINDS
AROUND 5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. NORTHEAST
WINDS AROUND 5 MPH.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S. NORTHEAST WINDS
AROUND 5 MPH, BECOMING SOUTHEAST IN THE AFTERNOON.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. EAST WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
ILZ021-152115-
GRUNDY-
INCLUDING THE CITIES OF MORRIS, COAL CITY, AND MINOOKA
236 AM CDT SAT AUG 15 2026
TODAY TONIGHT SUN SUN NIGHT
CLOUD COVER MCLDY PCLDY MCLDY MCLEAR
PRECIP TYPE TSTMS TSTMS TSTMS NONE
CHANCE PRECIP (%) 100 40 40 10
MAX TEMP (24HR TREND) 83 (+5) 84
MIN RH % (24HR TREND) 82 (-1) 75
MIN TEMP (24HR TREND) 72 (0) 66
MAX RH % (24HR TREND) 100 (+1) 94
20FT WIND AM (MPH) S 6-7 W 8-9
20FT WIND PM (MPH) SW 6-7 LGT/VAR NW 8-9 NW 5-6
PEAK WIND GUSTS (MPH) 14 15
PRECIP AMOUNT (IN) 1.00-1.50 0.10-0.25 0.01-0.05 0.00
11 AM MIXING HGT (FT) 1400 2000
MAX MIXING HGT (FT) 2500 3400
TRANSPORT WND (MPH) SW 10 NW 14
VENT RATE (MPH-FT) 25000 51000
VENT RATE CATEGORY POOR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
MONDAY
SUNNY. HIGHS IN THE LOWER 80S. NORTH WINDS AROUND
5 MPH.
MONDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 60S. LIGHT WINDS.
TUESDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS
AROUND 5 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. SHOWERS LIKELY AFTER MIDNIGHT.
LOWS IN THE UPPER 60S. SOUTH WINDS AROUND 5 MPH.
WEDNESDAY
PARTLY SUNNY WITH A CHANCE OF SHOWERS. A CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE LOWER 80S. SOUTHWEST
WINDS AROUND 5 MPH, BECOMING NORTHWEST IN THE AFTERNOON.
WEDNESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE LOWER 60S. NORTH WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S. NORTH WINDS
AROUND 5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. LIGHT
WINDS.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S. NORTHEAST WINDS
AROUND 5 MPH, BECOMING EAST IN THE AFTERNOON.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 60. LIGHT WINDS.
ILZ022-152115-
WILL-
INCLUDING THE CITIES OF JOLIET, BOLINGBROOK, AND WILMINGTON
236 AM CDT SAT AUG 15 2026
TODAY TONIGHT SUN SUN NIGHT
CLOUD COVER CLOUDY PCLDY MCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS NONE
CHANCE PRECIP (%) 100 40 40 10
MAX TEMP (24HR TREND) 82 (+3) 84
MIN RH % (24HR TREND) 83 (+3) 75
MIN TEMP (24HR TREND) 71 (0) 65
MAX RH % (24HR TREND) 100 (+1) 98
20FT WIND AM (MPH) S 7-8 W 8-9
20FT WIND PM (MPH) SW 7-8 LGT/VAR NW 8-9 NW 5-6
PEAK WIND GUSTS (MPH) 15 16
PRECIP AMOUNT (IN) 1.00-1.50 0.10-0.25 0.10-0.25 0.00
11 AM MIXING HGT (FT) 1300 2100
MAX MIXING HGT (FT) 2400 3200
TRANSPORT WND (MPH) SW 11 W 13
VENT RATE (MPH-FT) 28800 44800
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
MONDAY
MOSTLY SUNNY. HIGHS AROUND 80. NORTH WINDS AROUND
5 MPH.
MONDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 60S. LIGHT
WINDS.
TUESDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS
AROUND 5 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS AFTER
MIDNIGHT. LOWS IN THE UPPER 60S. SOUTH WINDS 5 TO 10 MPH.
WEDNESDAY
PARTLY SUNNY WITH A CHANCE OF SHOWERS. A CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE UPPER 70S. SOUTHWEST
WINDS AROUND 10 MPH, BECOMING NORTHWEST IN THE AFTERNOON.
WEDNESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS AROUND 60. NORTH WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S. NORTH WINDS
AROUND 5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. NORTHEAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S. NORTH WINDS AROUND
5 MPH, BECOMING SOUTHEAST IN THE AFTERNOON.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. LIGHT
WINDS.
ILZ032-152115-
LIVINGSTON-
INCLUDING THE CITIES OF PONTIAC, DWIGHT, AND FAIRBURY
236 AM CDT SAT AUG 15 2026
TODAY TONIGHT SUN SUN NIGHT
CLOUD COVER MCLDY PCLDY MCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS NONE
CHANCE PRECIP (%) 100 40 40 10
MAX TEMP (24HR TREND) 84 (+5) 85
MIN RH % (24HR TREND) 80 (-1) 74
MIN TEMP (24HR TREND) 73 (+1) 66
MAX RH % (24HR TREND) 99 (-1) 97
20FT WIND AM (MPH) S 5-7 W 8-9
20FT WIND PM (MPH) SW 5-7 LGT/VAR NW 8-9 NW 5-6
PEAK WIND GUSTS (MPH) 14
PRECIP AMOUNT (IN) 0.75-1.00 0.05-0.10 0.05-0.10 0.00
11 AM MIXING HGT (FT) 1700 1900
MAX MIXING HGT (FT) 2500 3400
TRANSPORT WND (MPH) SW 10 NW 14
VENT RATE (MPH-FT) 25000 51000
VENT RATE CATEGORY POOR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
MONDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. NORTH WINDS
AROUND 5 MPH.
MONDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 60S. LIGHT WINDS.
TUESDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS
AROUND 5 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS AFTER
MIDNIGHT. LOWS IN THE UPPER 60S. SOUTH WINDS 5 TO 10 MPH.
WEDNESDAY
PARTLY SUNNY WITH A CHANCE OF SHOWERS AND
THUNDERSTORMS. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS AROUND
10 MPH, BECOMING NORTHWEST IN THE AFTERNOON.
WEDNESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE LOWER 60S. NORTH WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S. NORTH WINDS
AROUND 5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. LIGHT
WINDS.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S. NORTHEAST WINDS
AROUND 5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 60. LIGHT WINDS.
ILZ023-152115-
KANKAKEE-
INCLUDING THE CITIES OF KANKAKEE, BOURBONNAIS, AND BRADLEY
236 AM CDT SAT AUG 15 2026
TODAY TONIGHT SUN SUN NIGHT
CLOUD COVER CLOUDY PCLDY MCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS NONE
CHANCE PRECIP (%) 100 40 40 10
MAX TEMP (24HR TREND) 82 (+4) 84
MIN RH % (24HR TREND) 81 (-1) 75
MIN TEMP (24HR TREND) 71 (0) 65
MAX RH % (24HR TREND) 99 (-1) 99
20FT WIND AM (MPH) S 6-7 W 8-9
20FT WIND PM (MPH) SW 6-7 LGT/VAR NW 8-9 NW 5-6
PEAK WIND GUSTS (MPH) 15
PRECIP AMOUNT (IN) 1.00-1.50 0.01-0.05 0.10-0.25 0.00
11 AM MIXING HGT (FT) 1500 1900
MAX MIXING HGT (FT) 2100 2900
TRANSPORT WND (MPH) SW 11 NW 13
VENT RATE (MPH-FT) 25200 40600
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
MONDAY
MOSTLY SUNNY. HIGHS AROUND 80. NORTH WINDS AROUND
5 MPH.
MONDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 60S. LIGHT
WINDS.
TUESDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS
AROUND 5 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS AFTER
MIDNIGHT. LOWS IN THE MID 60S. SOUTH WINDS AROUND 5 MPH.
WEDNESDAY
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS AND
THUNDERSTORMS. HIGHS AROUND 80. SOUTHWEST WINDS AROUND 5 MPH,
BECOMING NORTHWEST IN THE AFTERNOON.
WEDNESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS AROUND 60. NORTH WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S. NORTH WINDS
AROUND 5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. LIGHT
WINDS.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S. EAST WINDS AROUND
5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. LIGHT
WINDS.
ILZ039-152115-
FORD-
INCLUDING THE CITIES OF PAXTON AND GIBSON CITY
236 AM CDT SAT AUG 15 2026
TODAY TONIGHT SUN SUN NIGHT
CLOUD COVER MCLDY PCLDY MCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS NONE
CHANCE PRECIP (%) 100 40 40 10
MAX TEMP (24HR TREND) 84 (+3) 85
MIN RH % (24HR TREND) 77 (-1) 74
MIN TEMP (24HR TREND) 73 (+2) 66
MAX RH % (24HR TREND) 99 (0) 96
20FT WIND AM (MPH) S 6 W 8-9
20FT WIND PM (MPH) SW 6 LGT/VAR NW 8-9 NW 5-6
PEAK WIND GUSTS (MPH) 15
PRECIP AMOUNT (IN) 0.75-1.00 0.01-0.05 0.05-0.10 0.00
11 AM MIXING HGT (FT) 1500 1800
MAX MIXING HGT (FT) 2500 3700
TRANSPORT WND (MPH) SW 11 NW 14
VENT RATE (MPH-FT) 30000 55500
VENT RATE CATEGORY POOR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
MONDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. NORTH WINDS
AROUND 5 MPH.
MONDAY NIGHT
MOSTLY CLEAR. LOWS IN THE LOWER 60S. LIGHT WINDS.
TUESDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTH WINDS
AROUND 5 MPH.
TUESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN MOSTLY CLOUDY
WITH A CHANCE OF SHOWERS AFTER MIDNIGHT. LOWS IN THE UPPER 60S.
SOUTH WINDS 5 TO 10 MPH.
WEDNESDAY
PARTLY SUNNY WITH A CHANCE OF SHOWERS AND
THUNDERSTORMS. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS AROUND
10 MPH, BECOMING WEST IN THE AFTERNOON.
WEDNESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS AROUND 60. NORTH WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S. NORTH WINDS
AROUND 5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. NORTHEAST
WINDS AROUND 5 MPH.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S. NORTHEAST WINDS
AROUND 5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. LIGHT
WINDS.
ILZ033-152115-
IROQUOIS-
INCLUDING THE CITIES OF WATSEKA AND GILMAN
236 AM CDT SAT AUG 15 2026
TODAY TONIGHT SUN SUN NIGHT
CLOUD COVER MCLDY PCLDY MCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS NONE
CHANCE PRECIP (%) 100 40 40 10
MAX TEMP (24HR TREND) 84 (+4) 85
MIN RH % (24HR TREND) 77 (-1) 72
MIN TEMP (24HR TREND) 72 (+1) 65
MAX RH % (24HR TREND) 99 (0) 98
20FT WIND AM (MPH) S 6 W 7-8
20FT WIND PM (MPH) SW 6 LGT/VAR NW 7-8 NW 5
PEAK WIND GUSTS (MPH) 15
PRECIP AMOUNT (IN) 1.00-1.50 0.01-0.05 0.05-0.10 0.00
11 AM MIXING HGT (FT) 1500 1900
MAX MIXING HGT (FT) 2500 3400
TRANSPORT WND (MPH) SW 11 NW 14
VENT RATE (MPH-FT) 30000 51000
VENT RATE CATEGORY POOR FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
MONDAY
MOSTLY SUNNY. HIGHS AROUND 80. NORTH WINDS AROUND
5 MPH.
MONDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 60S. LIGHT
WINDS.
TUESDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS
AROUND 5 MPH.
TUESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN MOSTLY CLOUDY
WITH A CHANCE OF SHOWERS AFTER MIDNIGHT. LOWS IN THE MID 60S.
LIGHT WINDS, BECOMING SOUTH AROUND 5 MPH AFTER MIDNIGHT.
WEDNESDAY
PARTLY SUNNY WITH A CHANCE OF SHOWERS AND
THUNDERSTORMS. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS AROUND
5 MPH, BECOMING WEST IN THE AFTERNOON.
WEDNESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS AROUND 60. NORTH WINDS AROUND 5 MPH IN THE
EVENING, BECOMING LIGHT.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S. NORTH WINDS
AROUND 5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. LIGHT
WINDS.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S. NORTHEAST WINDS
AROUND 5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. LIGHT
WINDS.
INZ010-152115-
NEWTON-
INCLUDING THE CITIES OF ROSELAWN, KENTLAND, AND MOROCCO
236 AM CDT SAT AUG 15 2026
TODAY TONIGHT SUN SUN NIGHT
CLOUD COVER CLOUDY PCLDY MCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS SHOWERS
CHANCE PRECIP (%) 100 40 40 20
MAX TEMP (24HR TREND) 81 (+3) 83
MIN RH % (24HR TREND) 81 (-3) 76
MIN TEMP (24HR TREND) 72 (+2) 65
MAX RH % (24HR TREND) 99 (-1) 99
20FT WIND AM (MPH) SE 6 W 8-9
20FT WIND PM (MPH) SW 6 LGT/VAR W 8-9 LGT/VAR
PEAK WIND GUSTS (MPH) 16
PRECIP AMOUNT (IN) 1.00-1.50 0.01-0.05 0.10-0.25 0.01-0.05
11 AM MIXING HGT (FT) 1400 2000
MAX MIXING HGT (FT) 2200 2900
TRANSPORT WND (MPH) SW 11 NW 13
VENT RATE (MPH-FT) 26400 40600
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
MONDAY
SUNNY. HIGHS IN THE UPPER 70S. NORTH WINDS AROUND
5 MPH.
MONDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 60. LIGHT WINDS.
TUESDAY
MOSTLY SUNNY. HIGHS AROUND 80. SOUTHWEST WINDS AROUND
5 MPH.
TUESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN MOSTLY CLOUDY
WITH A CHANCE OF SHOWERS AFTER MIDNIGHT. LOWS IN THE MID 60S.
LIGHT WINDS, BECOMING SOUTH AROUND 5 MPH AFTER MIDNIGHT.
WEDNESDAY
PARTLY SUNNY WITH A CHANCE OF SHOWERS. A CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE UPPER 70S. SOUTHWEST
WINDS AROUND 10 MPH, BECOMING WEST IN THE AFTERNOON.
WEDNESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE UPPER 50S. NORTH WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 70S. NORTH WINDS
AROUND 5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. LIGHT
WINDS.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S. EAST WINDS AROUND
5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. LIGHT
WINDS.
INZ011-152115-
JASPER-
INCLUDING THE CITIES OF RENSSELAER AND DEMOTTE
236 AM CDT SAT AUG 15 2026
TODAY TONIGHT SUN SUN NIGHT
CLOUD COVER CLOUDY PCLDY MCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 100 40 40 20
MAX TEMP (24HR TREND) 80 (+3) 83
MIN RH % (24HR TREND) 84 (0) 77
MIN TEMP (24HR TREND) 72 (+2) 66
MAX RH % (24HR TREND) 99 (-1) 99
20FT WIND AM (MPH) SE 6 W 8-9
20FT WIND PM (MPH) S 6 LGT/VAR W 8-9 NW 5
PEAK WIND GUSTS (MPH) 16
PRECIP AMOUNT (IN) 1.00-1.50 0.01-0.05 0.10-0.25 0.01-0.05
11 AM MIXING HGT (FT) 1300 2100
MAX MIXING HGT (FT) 2100 2900
TRANSPORT WND (MPH) S 12 W 13
VENT RATE (MPH-FT) 27300 40600
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
MONDAY
SUNNY. HIGHS IN THE UPPER 70S. NORTH WINDS AROUND
5 MPH.
MONDAY NIGHT
MOSTLY CLEAR. LOWS IN THE UPPER 50S. LIGHT WINDS.
TUESDAY
MOSTLY SUNNY. HIGHS AROUND 80. SOUTHWEST WINDS AROUND
5 MPH.
TUESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN MOSTLY CLOUDY
WITH A CHANCE OF SHOWERS AFTER MIDNIGHT. LOWS IN THE MID 60S.
SOUTH WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY CLOUDY. SHOWERS LIKELY IN THE MORNING, THEN A
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. HIGHS IN
THE UPPER 70S. SOUTHWEST WINDS AROUND 10 MPH, BECOMING WEST IN
THE AFTERNOON.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 50S. NORTH
WINDS AROUND 5 MPH.
THURSDAY
PARTLY SUNNY. HIGHS IN THE LOWER 70S. NORTH WINDS
AROUND 5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. LIGHT
WINDS.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 70S. EAST WINDS AROUND
5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. LIGHT
WINDS.
INZ019-152115-
BENTON-
INCLUDING THE CITIES OF FOWLER AND OXFORD
336 AM EDT SAT AUG 15 2026
TODAY TONIGHT SUN SUN NIGHT
CLOUD COVER MCLDY PCLDY MCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 90 40 40 20
MAX TEMP (24HR TREND) 82 (+3) 84
MIN RH % (24HR TREND) 81 (+4) 76
MIN TEMP (24HR TREND) 73 (+2) 66
MAX RH % (24HR TREND) 99 (0) 98
20FT WIND AM (MPH) S 6 W 8-9
20FT WIND PM (MPH) SW 6 LGT/VAR W 8-9 NW 5-6
PEAK WIND GUSTS (MPH) 16
PRECIP AMOUNT (IN) 0.75-1.00 0.01-0.05 0.05-0.10 0.01-0.05
11 AM MIXING HGT (FT) 1400 2100
MAX MIXING HGT (FT) 2400 3000
TRANSPORT WND (MPH) SW 9 W 14
VENT RATE (MPH-FT) 21600 45000
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
MONDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 70S. NORTH WINDS
AROUND 5 MPH.
MONDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 60S. LIGHT
WINDS.
TUESDAY
SUNNY. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS AROUND
5 MPH.
TUESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN MOSTLY CLOUDY
WITH A CHANCE OF SHOWERS AFTER MIDNIGHT. LOWS IN THE MID 60S.
LIGHT WINDS, BECOMING SOUTH AROUND 5 MPH AFTER MIDNIGHT.
WEDNESDAY
PARTLY SUNNY WITH A CHANCE OF SHOWERS. A CHANCE OF
THUNDERSTORMS IN THE AFTERNOON. HIGHS AROUND 80. SOUTH WINDS
AROUND 10 MPH, BECOMING WEST IN THE AFTERNOON.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 60S. NORTH
WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S. NORTH WINDS
AROUND 5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 50S. LIGHT
WINDS.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 70S. NORTHEAST WINDS
AROUND 5 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 50S. LIGHT
WINDS.
YACK
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