041
FNUS53 KLOT 040927
FWFLOT
FIRE WEATHER PLANNING FORECAST FOR NORTHERN IL AND NORTHWEST IN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
427 AM CDT MON MAY 4 2026
DISCUSSION
TODAY WILL BE WINDY AND WARM WITH HIGHS WELL INTO THE 70S TO
LOWER 80S. DEEP MIXING IS EXPECTED THIS AFTERNOON, ESPECIALLY
NORTH OF I-80. THIS DEEP MIXING SHOULD ALLOW DEWPOINTS TO MIX OUT
RESULTING IN LOW AFTERNOON RELATIVE HUMIDITIES. IT IS POSSIBLE
THAT MIN RH VALUES THIS AFTERNOON END UP EVEN A BIT LOWER THAN
FORECAST BELOW.
A COLD FRONT WILL MOVE ACROSS THE REGION TONIGHT RESULTING IN AN
INCREASING COVERAGE OF SHOWERS AND THUNDERSTORMS THIS EVENING.
SHOWERS MAY LINGER INTO TUESDAY MORNING SOUTH OF I-80. MUCH COLDER
CONDITIONS AND BELOW AVERAGE TEMPERATURES ARE EXPECTED TUESDAY AND
WEDNESDAY BEFORE TEMPERATURES MODERATE BACK UP TO MORE SEASONABLE
LEVELS BY THE END OF THE WEEK INTO NEXT WEEK. NO SIGNIFICANT RAIN
IS EXPECTED THROUGH THE WEEKEND AFTER RAIN ENDS TUESDAY.
ILZ014-042115-
COOK-
INCLUDING THE CITIES OF CHICAGO, SCHAUMBURG, EVANSTON, OAK LAWN,
LEMONT, ORLAND PARK, AND PARK FOREST
427 AM CDT MON MAY 4 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER MCLEAR PCLDY MCLDY MCLDY
PRECIP TYPE NONE TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 60 30 20
MAX TEMP (24HR TREND) 79 (+12) 56
MIN RH % (24HR TREND) 29 (-8) 44
MIN TEMP (24HR TREND) 50 (+2) 41
MAX RH % (24HR TREND) 86 (+4) 75
20FT WIND AM (MPH) SW 10-15 N 6-7
20FT WIND PM (MPH) SW 10-15 W 6-10 NE 6-7 LGT/VAR
PEAK WIND GUSTS (MPH) 30 20
PRECIP AMOUNT (IN) 0.00 0.10-0.25 0.01-0.05 0.00
11 AM MIXING HGT (FT) 4100 4200
MAX MIXING HGT (FT) 8300 5900
TRANSPORT WND (MPH) SW 26 N 11
VENT RATE (MPH-FT) 215800 70800
VENT RATE CATEGORY EXCELLENT FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 50S. NORTH WINDS
5 TO 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 40S. NORTH
WINDS AROUND 5 MPH, BECOMING WEST AFTER MIDNIGHT.
THURSDAY
PARTLY SUNNY. HIGHS IN THE UPPER 50S. WEST WINDS 5 TO
10 MPH.
THURSDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE MID 40S. SOUTHWEST WINDS AROUND 5 MPH.
FRIDAY
PARTLY SUNNY. HIGHS IN THE LOWER 60S. SOUTHWEST WINDS
5 TO 10 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY IN THE EVENING THEN CLEARING. LOWS
IN THE LOWER 40S. NORTHEAST WINDS AROUND 5 MPH, BECOMING WEST
AFTER MIDNIGHT.
SATURDAY
SUNNY. HIGHS IN THE UPPER 60S. WEST WINDS 5 TO
10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. SOUTHEAST WINDS AROUND
5 MPH.
SUNDAY
MOSTLY SUNNY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS IN THE MID 60S. SOUTHWEST WINDS AROUND 5 MPH, BECOMING
NORTH IN THE AFTERNOON.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S. NORTHEAST
WINDS AROUND 5 MPH, BECOMING WEST AFTER MIDNIGHT.
ILZ006-042115-
LAKE IL-
INCLUDING THE CITIES OF WAUKEGAN, BUFFALO GROVE, MUNDELEIN,
AND GURNEE
427 AM CDT MON MAY 4 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER MCLEAR PCLDY MCLDY PCLDY
PRECIP TYPE NONE TSTMS SHOWERS NONE
CHANCE PRECIP (%) 20 50 20 10
MAX TEMP (24HR TREND) 78 (+10) 55
MIN RH % (24HR TREND) 27 (-10) 43
MIN TEMP (24HR TREND) 47 (0) 38
MAX RH % (24HR TREND) 73 (-9) 74
20FT WIND AM (MPH) SW 10-15 NW 6-7
20FT WIND PM (MPH) SW 10-15 W 5-9 NW 6-7 LGT/VAR
PEAK WIND GUSTS (MPH) 29 18
PRECIP AMOUNT (IN) 0.00 0.10-0.25 0.00 0.00
11 AM MIXING HGT (FT) 5100 4100
MAX MIXING HGT (FT) 8200 6100
TRANSPORT WND (MPH) SW 26 NW 14
VENT RATE (MPH-FT) 213200 91500
VENT RATE CATEGORY EXCELLENT GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE MID 50S. NORTHWEST WINDS
5 TO 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 30S. SOUTH
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
THURSDAY
PARTLY SUNNY. HIGHS IN THE UPPER 50S. WEST WINDS 5 TO
10 MPH.
THURSDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE LOWER 40S. SOUTHWEST WINDS AROUND
5 MPH.
FRIDAY
MOSTLY SUNNY. HIGHS AROUND 60. WEST WINDS 5 TO 10 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY IN THE EVENING THEN CLEARING. LOWS
IN THE LOWER 40S. LIGHT WINDS, BECOMING WEST AROUND 5 MPH AFTER
MIDNIGHT.
SATURDAY
SUNNY. HIGHS IN THE MID 60S. WEST WINDS 5 TO 10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S. SOUTH WINDS
AROUND 5 MPH, BECOMING SOUTHWEST AFTER MIDNIGHT.
SUNDAY
PARTLY SUNNY. HIGHS IN THE LOWER 60S. WEST WINDS AROUND
5 MPH, BECOMING NORTH IN THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE MID 40S. EAST WINDS AROUND 5 MPH,
BECOMING NORTHWEST AFTER MIDNIGHT.
INZ001-042115-
LAKE IN-
INCLUDING THE CITIES OF GARY, HAMMOND, AND MERRILLVILLE
427 AM CDT MON MAY 4 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER MCLEAR PCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 70 50 30
MAX TEMP (24HR TREND) 78 (+15) 54
MIN RH % (24HR TREND) 37 (-2) 58
MIN TEMP (24HR TREND) 49 (+1) 41
MAX RH % (24HR TREND) 95 (+8) 87
20FT WIND AM (MPH) SW 15-20 N 6
20FT WIND PM (MPH) SW 15-20 SW 6-10 NE 6 LGT/VAR
PEAK WIND GUSTS (MPH) 31 20
PRECIP AMOUNT (IN) 0.01-0.05 0.10-0.25 0.05-0.10 0.01-0.05
11 AM MIXING HGT (FT) 3100 2900
MAX MIXING HGT (FT) 7800 4800
TRANSPORT WND (MPH) SW 27 N 10
VENT RATE (MPH-FT) 218400 48000
VENT RATE CATEGORY EXCELLENT POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE MID 50S. NORTH WINDS 5 TO
10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 40. NORTH WINDS
AROUND 5 MPH, BECOMING NORTHWEST AFTER MIDNIGHT.
THURSDAY
PARTLY SUNNY. HIGHS IN THE UPPER 50S. NORTHWEST WINDS
5 TO 10 MPH.
THURSDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE LOWER 40S. LIGHT WINDS, BECOMING
SOUTHWEST AROUND 5 MPH AFTER MIDNIGHT.
FRIDAY
PARTLY SUNNY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS IN THE LOWER 60S. SOUTHWEST WINDS 5 TO 10 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S. LIGHT
WINDS, BECOMING SOUTHWEST AROUND 5 MPH AFTER MIDNIGHT.
SATURDAY
SUNNY. HIGHS IN THE MID 60S. WEST WINDS AROUND 5 MPH.
SATURDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. NORTH WINDS AROUND 5 MPH,
BECOMING SOUTHEAST AFTER MIDNIGHT.
SUNDAY
MOSTLY SUNNY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS IN THE MID 60S. WEST WINDS AROUND 5 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE MID 40S. NORTH WINDS AROUND 5 MPH,
BECOMING SOUTHWEST AFTER MIDNIGHT.
INZ002-042115-
PORTER-
INCLUDING THE CITIES OF PORTAGE, VALPARAISO, AND CHESTERTON
427 AM CDT MON MAY 4 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER MCLEAR PCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 70 50 30
MAX TEMP (24HR TREND) 77 (+15) 53
MIN RH % (24HR TREND) 37 (-5) 59
MIN TEMP (24HR TREND) 48 (-1) 41
MAX RH % (24HR TREND) 93 (+8) 89
20FT WIND AM (MPH) SW 10-15 N 6
20FT WIND PM (MPH) SW 10-15 SW 6-10 N 6 LGT/VAR
PEAK WIND GUSTS (MPH) 30 20
PRECIP AMOUNT (IN) 0.00 0.10-0.25 0.05-0.10 0.01-0.05
11 AM MIXING HGT (FT) 3000 2400
MAX MIXING HGT (FT) 7700 3700
TRANSPORT WND (MPH) SW 27 N 11
VENT RATE (MPH-FT) 215600 44400
VENT RATE CATEGORY EXCELLENT POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE MID 50S. NORTHWEST WINDS
5 TO 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 40. NORTH WINDS
AROUND 5 MPH, BECOMING WEST AFTER MIDNIGHT.
THURSDAY
PARTLY SUNNY. HIGHS IN THE MID 50S. NORTHWEST WINDS
5 TO 10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S. LIGHT
WINDS, BECOMING SOUTHWEST AROUND 5 MPH AFTER MIDNIGHT.
FRIDAY
PARTLY SUNNY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS AROUND 60. SOUTHWEST WINDS 5 TO 10 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S. WEST WINDS
AROUND 5 MPH.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S. WEST WINDS AROUND
5 MPH.
SATURDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE MID 40S. NORTH WINDS AROUND 5 MPH,
BECOMING SOUTH AFTER MIDNIGHT.
SUNDAY
MOSTLY SUNNY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS IN THE LOWER 60S. WEST WINDS AROUND 5 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE MID 40S. NORTHEAST WINDS AROUND 5 MPH,
BECOMING WEST AFTER MIDNIGHT.
ILZ013-042115-
DUPAGE-
INCLUDING THE CITIES OF NAPERVILLE, WHEATON, DOWNERS GROVE,
LOMBARD, AND CAROL STREAM
427 AM CDT MON MAY 4 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER MCLEAR PCLDY MCLDY PCLDY
PRECIP TYPE NONE TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 50 30 10
MAX TEMP (24HR TREND) 79 (+11) 56
MIN RH % (24HR TREND) 30 (-6) 43
MIN TEMP (24HR TREND) 49 (+1) 41
MAX RH % (24HR TREND) 82 (0) 73
20FT WIND AM (MPH) SW 15-20 N 6-7
20FT WIND PM (MPH) SW 15-20 W 6-10 NW 6-7 LGT/VAR
PEAK WIND GUSTS (MPH) 30 21 13
PRECIP AMOUNT (IN) 0.00 0.10-0.25 0.00 0.00
11 AM MIXING HGT (FT) 4100 4000
MAX MIXING HGT (FT) 8300 5700
TRANSPORT WND (MPH) SW 25 NW 11
VENT RATE (MPH-FT) 207500 68400
VENT RATE CATEGORY EXCELLENT FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
MOSTLY CLOUDY. HIGHS IN THE UPPER 50S. NORTHWEST
WINDS 5 TO 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 40S.
NORTHWEST WINDS AROUND 5 MPH.
THURSDAY
PARTLY SUNNY. HIGHS IN THE UPPER 50S. WEST WINDS 5 TO
10 MPH.
THURSDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE LOWER 40S. WEST WINDS AROUND 5 MPH,
BECOMING SOUTH AFTER MIDNIGHT.
FRIDAY
PARTLY SUNNY. HIGHS IN THE LOWER 60S. WEST WINDS 5 TO
10 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S. NORTH WINDS
AROUND 5 MPH, BECOMING WEST AFTER MIDNIGHT.
SATURDAY
SUNNY. HIGHS IN THE UPPER 60S. WEST WINDS 5 TO
10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. WEST WINDS AROUND 5 MPH,
BECOMING SOUTH AFTER MIDNIGHT.
SUNDAY
MOSTLY SUNNY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS IN THE MID 60S. WEST WINDS 5 TO 10 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S. NORTH WINDS
AROUND 5 MPH, BECOMING WEST AFTER MIDNIGHT.
ILZ012-042115-
KANE-
INCLUDING THE CITIES OF AURORA AND ELGIN
427 AM CDT MON MAY 4 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER MCLEAR PCLDY MCLDY PCLDY
PRECIP TYPE NONE TSTMS SHOWERS NONE
CHANCE PRECIP (%) 20 50 20 10
MAX TEMP (24HR TREND) 79 (+11) 56
MIN RH % (24HR TREND) 29 (-9) 44
MIN TEMP (24HR TREND) 47 (+1) 38
MAX RH % (24HR TREND) 80 (-2) 75
20FT WIND AM (MPH) SW 15-20 N 6-8
20FT WIND PM (MPH) SW 15-20 W 6-10 NW 6-8 LGT/VAR
PEAK WIND GUSTS (MPH) 31 19 13
PRECIP AMOUNT (IN) 0.00 0.10-0.25 0.00 0.00
11 AM MIXING HGT (FT) 3500 3900
MAX MIXING HGT (FT) 8700 5700
TRANSPORT WND (MPH) SW 26 NW 13
VENT RATE (MPH-FT) 226200 79800
VENT RATE CATEGORY EXCELLENT GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 50S. NORTHWEST WINDS
5 TO 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 30S.
NORTHWEST WINDS AROUND 5 MPH.
THURSDAY
PARTLY SUNNY. HIGHS IN THE UPPER 50S. WEST WINDS 5 TO
10 MPH.
THURSDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE LOWER 40S. SOUTHWEST WINDS AROUND
5 MPH.
FRIDAY
PARTLY SUNNY. HIGHS IN THE LOWER 60S. WEST WINDS 5 TO
10 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S. NORTHWEST
WINDS AROUND 5 MPH.
SATURDAY
SUNNY. HIGHS IN THE UPPER 60S. WEST WINDS 5 TO
10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S. WEST WINDS
AROUND 5 MPH, BECOMING SOUTH AFTER MIDNIGHT.
SUNDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTHWEST WINDS
5 TO 10 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S. NORTH WINDS
AROUND 5 MPH, BECOMING NORTHWEST AFTER MIDNIGHT.
ILZ005-042115-
MCHENRY-
INCLUDING THE CITIES OF CRYSTAL LAKE, ALGONQUIN, MCHENRY,
AND WOODSTOCK
427 AM CDT MON MAY 4 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER MCLEAR PCLDY MCLDY PCLDY
PRECIP TYPE NONE TSTMS SHOWERS NONE
CHANCE PRECIP (%) 20 50 20 10
MAX TEMP (24HR TREND) 78 (+10) 55
MIN RH % (24HR TREND) 28 (-8) 43
MIN TEMP (24HR TREND) 45 (-1) 37
MAX RH % (24HR TREND) 72 (-14) 76
20FT WIND AM (MPH) SW 10-15 NW 6-8
20FT WIND PM (MPH) SW 10-15 NW 5-9 NW 6-8 LGT/VAR
PEAK WIND GUSTS (MPH) 30 18 14
PRECIP AMOUNT (IN) 0.00 0.10-0.25 0.00 0.00
11 AM MIXING HGT (FT) 3700 4000
MAX MIXING HGT (FT) 8500 5900
TRANSPORT WND (MPH) SW 27 NW 17
VENT RATE (MPH-FT) 238000 100300
VENT RATE CATEGORY EXCELLENT GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE MID 50S. NORTHWEST WINDS
5 TO 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 30S.
NORTHWEST WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
THURSDAY
PARTLY SUNNY. HIGHS IN THE UPPER 50S. WEST WINDS 5 TO
10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S. WEST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 60S. WEST WINDS 5 TO
10 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 40. LIGHT WINDS.
SATURDAY
SUNNY. HIGHS IN THE MID 60S. WEST WINDS 5 TO 10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S. WEST WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SUNDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTHWEST WINDS
5 TO 10 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S. NORTH WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
ILZ004-042115-
BOONE-
INCLUDING THE CITY OF BELVIDERE
427 AM CDT MON MAY 4 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER MCLEAR PCLDY MCLDY PCLDY
PRECIP TYPE NONE TSTMS SHOWERS NONE
CHANCE PRECIP (%) 30 50 10 10
MAX TEMP (24HR TREND) 79 (+10) 55
MIN RH % (24HR TREND) 27 (-8) 39
MIN TEMP (24HR TREND) 45 (0) 37
MAX RH % (24HR TREND) 70 (-15) 74
20FT WIND AM (MPH) SW 10-15 NW 6-8
20FT WIND PM (MPH) W 10-15 NW 5-9 NW 6-8 LGT/VAR
PEAK WIND GUSTS (MPH) 30 18 14
PRECIP AMOUNT (IN) 0.00 0.05-0.10 0.00 0.00
11 AM MIXING HGT (FT) 3500 4100
MAX MIXING HGT (FT) 9100 5900
TRANSPORT WND (MPH) SW 27 NW 18
VENT RATE (MPH-FT) 254800 106200
VENT RATE CATEGORY EXCELLENT GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE MID 50S. NORTHWEST WINDS
5 TO 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 30S.
NORTHWEST WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 50S. WEST WINDS 5 TO
10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 40. SOUTHWEST WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 60S. WEST WINDS 5 TO
10 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 30S. LIGHT
WINDS.
SATURDAY
SUNNY. HIGHS IN THE UPPER 60S. WEST WINDS 5 TO
10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE MID 40S. WEST WINDS AROUND 5 MPH,
BECOMING SOUTH AFTER MIDNIGHT.
SUNDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. WEST WINDS 5 TO
10 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S. NORTHWEST
WINDS AROUND 5 MPH.
ILZ011-042115-
DE KALB-
INCLUDING THE CITIES OF DEKALB AND SYCAMORE
427 AM CDT MON MAY 4 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER MCLEAR PCLDY MCLDY PCLDY
PRECIP TYPE NONE TSTMS SHOWERS NONE
CHANCE PRECIP (%) 20 50 20 10
MAX TEMP (24HR TREND) 79 (+10) 55
MIN RH % (24HR TREND) 28 (-9) 43
MIN TEMP (24HR TREND) 46 (-2) 38
MAX RH % (24HR TREND) 79 (+2) 73
20FT WIND AM (MPH) SW 15-20 N 7-8
20FT WIND PM (MPH) SW 15-20 W 7-10 NW 7-8 N 5
PEAK WIND GUSTS (MPH) 31 18 13
PRECIP AMOUNT (IN) 0.00 0.10-0.25 0.00 0.00
11 AM MIXING HGT (FT) 3900 4000
MAX MIXING HGT (FT) 9100 5800
TRANSPORT WND (MPH) SW 26 NW 14
VENT RATE (MPH-FT) 236600 87000
VENT RATE CATEGORY EXCELLENT GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 50S. NORTHWEST WINDS
5 TO 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 30S.
NORTHWEST WINDS AROUND 5 MPH.
THURSDAY
PARTLY SUNNY. HIGHS IN THE UPPER 50S. WEST WINDS 5 TO
10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S. SOUTHWEST
WINDS AROUND 5 MPH.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 60S. WEST WINDS 5 TO
10 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S. NORTHWEST
WINDS AROUND 5 MPH.
SATURDAY
SUNNY. HIGHS IN THE UPPER 60S. WEST WINDS AROUND
10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S. WEST WINDS
AROUND 5 MPH, BECOMING SOUTH AFTER MIDNIGHT.
SUNDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHWEST WINDS
5 TO 10 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S. NORTH WINDS
AROUND 5 MPH, BECOMING NORTHWEST AFTER MIDNIGHT.
ILZ003-042115-
WINNEBAGO-
INCLUDING THE CITY OF ROCKFORD
427 AM CDT MON MAY 4 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER MCLEAR PCLDY MCLDY PCLDY
PRECIP TYPE TSTMS TSTMS NONE NONE
CHANCE PRECIP (%) 30 50 10
MAX TEMP (24HR TREND) 79 (+9) 55
MIN RH % (24HR TREND) 26 (-10) 37
MIN TEMP (24HR TREND) 45 (+1) 37
MAX RH % (24HR TREND) 69 (-15) 72
20FT WIND AM (MPH) SW 10-15 NW 6-8
20FT WIND PM (MPH) SW 10-15 NW 6-9 NW 6-8 LGT/VAR
PEAK WIND GUSTS (MPH) 31 17 14
PRECIP AMOUNT (IN) 0.05-0.10 0.05-0.10 0.00 0.00
11 AM MIXING HGT (FT) 3600 4400
MAX MIXING HGT (FT) 9500 6000
TRANSPORT WND (MPH) SW 27 NW 18
VENT RATE (MPH-FT) 266000 108000
VENT RATE CATEGORY EXCELLENT GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE MID 50S. NORTHWEST WINDS
5 TO 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 30S.
NORTHWEST WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 50S. WEST WINDS 5 TO
10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S. SOUTHWEST
WINDS AROUND 5 MPH.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S. WEST WINDS 5 TO
10 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 40. NORTHWEST WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SATURDAY
SUNNY. HIGHS IN THE UPPER 60S. WEST WINDS 5 TO
10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE MID 40S. WEST WINDS AROUND 5 MPH,
BECOMING SOUTH AFTER MIDNIGHT.
SUNDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. WEST WINDS 5 TO
10 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S. NORTHWEST
WINDS AROUND 5 MPH.
ILZ008-042115-
OGLE-
INCLUDING THE CITIES OF ROCHELLE, OREGON, AND BYRON
427 AM CDT MON MAY 4 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER MCLEAR PCLDY MCLDY PCLDY
PRECIP TYPE NONE TSTMS SHOWERS NONE
CHANCE PRECIP (%) 30 50 20 10
MAX TEMP (24HR TREND) 80 (+10) 56
MIN RH % (24HR TREND) 27 (-9) 36
MIN TEMP (24HR TREND) 46 (+1) 37
MAX RH % (24HR TREND) 69 (-10) 71
20FT WIND AM (MPH) SW 10-15 N 6-8
20FT WIND PM (MPH) SW 10-15 NW 6-9 NW 6-8 LGT/VAR
PEAK WIND GUSTS (MPH) 31 18 13
PRECIP AMOUNT (IN) 0.00 0.10-0.25 0.00 0.00
11 AM MIXING HGT (FT) 3700 4200
MAX MIXING HGT (FT) 9500 5900
TRANSPORT WND (MPH) SW 27 NW 17
VENT RATE (MPH-FT) 266000 100300
VENT RATE CATEGORY EXCELLENT GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE UPPER 50S. NORTHWEST
WINDS 5 TO 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 30S.
NORTHWEST WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS AROUND 60. WEST WINDS 5 TO
10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S. SOUTHWEST
WINDS AROUND 5 MPH.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S. WEST WINDS 5 TO
10 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S. NORTHWEST
WINDS AROUND 5 MPH.
SATURDAY
SUNNY. HIGHS IN THE UPPER 60S. WEST WINDS 5 TO
10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S. WEST WINDS
AROUND 5 MPH, BECOMING SOUTHWEST AFTER MIDNIGHT.
SUNDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHWEST WINDS
5 TO 10 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S. NORTHWEST
WINDS AROUND 5 MPH.
ILZ010-042115-
LEE-
INCLUDING THE CITY OF DIXON
427 AM CDT MON MAY 4 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER CLEAR PCLDY MCLDY PCLDY
PRECIP TYPE NONE TSTMS SHOWERS NONE
CHANCE PRECIP (%) 20 50 30 10
MAX TEMP (24HR TREND) 80 (+9) 56
MIN RH % (24HR TREND) 29 (-5) 40
MIN TEMP (24HR TREND) 46 (+1) 38
MAX RH % (24HR TREND) 75 (-4) 72
20FT WIND AM (MPH) SW 10-15 N 7-8
20FT WIND PM (MPH) SW 10-15 W 7-9 NW 7-8 N 5
PEAK WIND GUSTS (MPH) 30 18
PRECIP AMOUNT (IN) 0.00 0.10-0.25 0.00 0.00
11 AM MIXING HGT (FT) 4000 4200
MAX MIXING HGT (FT) 9500 5800
TRANSPORT WND (MPH) SW 25 NW 14
VENT RATE (MPH-FT) 237500 87000
VENT RATE CATEGORY EXCELLENT GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE UPPER 50S. NORTHWEST
WINDS 5 TO 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 30S.
NORTHWEST WINDS AROUND 5 MPH.
THURSDAY
PARTLY SUNNY. HIGHS AROUND 60. WEST WINDS 5 TO
10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S. SOUTHWEST
WINDS AROUND 5 MPH.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S. WEST WINDS 5 TO
10 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S. NORTHWEST
WINDS AROUND 5 MPH.
SATURDAY
SUNNY. HIGHS IN THE UPPER 60S. WEST WINDS 5 TO
10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. WEST WINDS AROUND 5 MPH,
BECOMING SOUTHWEST AFTER MIDNIGHT.
SUNDAY
MOSTLY SUNNY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS IN THE UPPER 60S. NORTHWEST WINDS 5 TO 10 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S. NORTHWEST
WINDS AROUND 5 MPH.
ILZ019-042115-
LA SALLE-
INCLUDING THE CITIES OF OTTAWA, STREATOR, LA SALLE, MENDOTA,
AND MARSEILLES
427 AM CDT MON MAY 4 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER CLEAR PCLDY MCLDY MCLDY
PRECIP TYPE NONE TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 60 40 20
MAX TEMP (24HR TREND) 80 (+9) 56
MIN RH % (24HR TREND) 31 (0) 44
MIN TEMP (24HR TREND) 49 (0) 40
MAX RH % (24HR TREND) 86 (+6) 75
20FT WIND AM (MPH) SW 15-20 N 6-7
20FT WIND PM (MPH) SW 15-20 W 7-10 N 6-7 N 5
PEAK WIND GUSTS (MPH) 33 20
PRECIP AMOUNT (IN) 0.00 0.10-0.25 0.01-0.05 0.00
11 AM MIXING HGT (FT) 3800 3900
MAX MIXING HGT (FT) 8700 5700
TRANSPORT WND (MPH) SW 25 N 13
VENT RATE (MPH-FT) 217500 79800
VENT RATE CATEGORY EXCELLENT GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE UPPER 50S. NORTHWEST
WINDS 5 TO 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 40. NORTHWEST WINDS
AROUND 5 MPH.
THURSDAY
PARTLY SUNNY. HIGHS AROUND 60. WEST WINDS 5 TO
10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S. SOUTHWEST
WINDS AROUND 5 MPH.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S. SOUTHWEST WINDS
5 TO 10 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S. WEST WINDS
AROUND 5 MPH.
SATURDAY
SUNNY. HIGHS IN THE UPPER 60S. WEST WINDS 5 TO
10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. WEST WINDS AROUND 5 MPH,
BECOMING SOUTH AFTER MIDNIGHT.
SUNDAY
MOSTLY SUNNY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS IN THE UPPER 60S. SOUTHWEST WINDS AROUND 5 MPH, BECOMING
WEST IN THE AFTERNOON.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S. NORTH WINDS
AROUND 5 MPH.
ILZ020-042115-
KENDALL-
INCLUDING THE CITIES OF OSWEGO, YORKVILLE, AND PLANO
427 AM CDT MON MAY 4 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER MCLEAR PCLDY MCLDY PCLDY
PRECIP TYPE NONE TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 60 40 20
MAX TEMP (24HR TREND) 80 (+10) 56
MIN RH % (24HR TREND) 32 (-3) 47
MIN TEMP (24HR TREND) 49 (+3) 39
MAX RH % (24HR TREND) 87 (-1) 78
20FT WIND AM (MPH) SW 10-15 N 6
20FT WIND PM (MPH) SW 10-15 W 6-10 N 6 LGT/VAR
PEAK WIND GUSTS (MPH) 31 20
PRECIP AMOUNT (IN) 0.00 0.10-0.25 0.01-0.05 0.00
11 AM MIXING HGT (FT) 3800 3800
MAX MIXING HGT (FT) 8300 5600
TRANSPORT WND (MPH) SW 25 NW 12
VENT RATE (MPH-FT) 207500 72800
VENT RATE CATEGORY EXCELLENT GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE UPPER 50S. NORTHWEST
WINDS 5 TO 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 40. NORTHWEST WINDS
AROUND 5 MPH.
THURSDAY
PARTLY SUNNY. HIGHS IN THE UPPER 50S. WEST WINDS 5 TO
10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S. SOUTHWEST
WINDS AROUND 5 MPH.
FRIDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S. WEST WINDS 5 TO
10 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S. NORTHWEST
WINDS AROUND 5 MPH.
SATURDAY
SUNNY. HIGHS IN THE UPPER 60S. WEST WINDS 5 TO
10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. WEST WINDS AROUND 5 MPH,
BECOMING SOUTH AFTER MIDNIGHT.
SUNDAY
MOSTLY SUNNY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS IN THE UPPER 60S. NORTHWEST WINDS 5 TO 10 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S. NORTH WINDS
AROUND 5 MPH, BECOMING WEST AFTER MIDNIGHT.
ILZ021-042115-
GRUNDY-
INCLUDING THE CITIES OF MORRIS, COAL CITY, AND MINOOKA
427 AM CDT MON MAY 4 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER MCLEAR PCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 60 50 20
MAX TEMP (24HR TREND) 80 (+11) 57
MIN RH % (24HR TREND) 33 (+1) 51
MIN TEMP (24HR TREND) 50 (0) 41
MAX RH % (24HR TREND) 90 (+10) 82
20FT WIND AM (MPH) SW 15-20 N 6
20FT WIND PM (MPH) SW 15-20 W 6-10 N 6 LGT/VAR
PEAK WIND GUSTS (MPH) 33 20
PRECIP AMOUNT (IN) 0.00 0.10-0.25 0.01-0.05 0.01-0.05
11 AM MIXING HGT (FT) 3800 3500
MAX MIXING HGT (FT) 8200 5400
TRANSPORT WND (MPH) SW 26 N 13
VENT RATE (MPH-FT) 213200 75600
VENT RATE CATEGORY EXCELLENT GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE UPPER 50S. NORTHWEST
WINDS 5 TO 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 40S.
NORTHWEST WINDS AROUND 5 MPH.
THURSDAY
PARTLY SUNNY. HIGHS AROUND 60. WEST WINDS 5 TO
10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S. LIGHT
WINDS, BECOMING SOUTHWEST AROUND 5 MPH AFTER MIDNIGHT.
FRIDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. SOUTHWEST WINDS
5 TO 10 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S. LIGHT
WINDS.
SATURDAY
SUNNY. HIGHS AROUND 70. WEST WINDS 5 TO 10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. WEST WINDS AROUND 5 MPH IN
THE EVENING, BECOMING LIGHT.
SUNDAY
MOSTLY SUNNY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS IN THE UPPER 60S. SOUTH WINDS AROUND 5 MPH, BECOMING WEST
IN THE AFTERNOON.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S. NORTH WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
ILZ022-042115-
WILL-
INCLUDING THE CITIES OF JOLIET, BOLINGBROOK, AND WILMINGTON
427 AM CDT MON MAY 4 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER MCLEAR PCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 20 70 50 20
MAX TEMP (24HR TREND) 79 (+11) 56
MIN RH % (24HR TREND) 35 (-3) 50
MIN TEMP (24HR TREND) 50 (+3) 40
MAX RH % (24HR TREND) 93 (-1) 85
20FT WIND AM (MPH) SW 15-20 N 6
20FT WIND PM (MPH) SW 15-20 SW 6-10 N 6 LGT/VAR
PEAK WIND GUSTS (MPH) 32 21
PRECIP AMOUNT (IN) 0.00 0.10-0.25 0.01-0.05 0.01-0.05
11 AM MIXING HGT (FT) 3600 3500
MAX MIXING HGT (FT) 7900 5300
TRANSPORT WND (MPH) SW 26 N 11
VENT RATE (MPH-FT) 205400 63600
VENT RATE CATEGORY EXCELLENT FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE UPPER 50S. NORTHWEST
WINDS 5 TO 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 40. NORTHWEST WINDS
AROUND 5 MPH.
THURSDAY
PARTLY SUNNY. HIGHS IN THE UPPER 50S. WEST WINDS 5 TO
10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S. SOUTHWEST
WINDS AROUND 5 MPH.
FRIDAY
PARTLY SUNNY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS IN THE MID 60S. SOUTHWEST WINDS 5 TO 10 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S. WEST WINDS
AROUND 5 MPH.
SATURDAY
SUNNY. HIGHS IN THE UPPER 60S. WEST WINDS 5 TO
10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. WEST WINDS AROUND 5 MPH,
BECOMING SOUTH AFTER MIDNIGHT.
SUNDAY
MOSTLY SUNNY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS IN THE UPPER 60S. WEST WINDS 5 TO 10 MPH.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S. NORTH WINDS
AROUND 5 MPH, BECOMING WEST AFTER MIDNIGHT.
ILZ032-042115-
LIVINGSTON-
INCLUDING THE CITIES OF PONTIAC, DWIGHT, AND FAIRBURY
427 AM CDT MON MAY 4 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER MCLEAR PCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 70 60 30
MAX TEMP (24HR TREND) 79 (+11) 57
MIN RH % (24HR TREND) 38 (+7) 52
MIN TEMP (24HR TREND) 51 (-1) 41
MAX RH % (24HR TREND) 92 (+12) 86
20FT WIND AM (MPH) SW 15-20 N 7-8
20FT WIND PM (MPH) SW 15-20 SW 6-11 N 7-8 LGT/VAR
PEAK WIND GUSTS (MPH) 36 21 14
PRECIP AMOUNT (IN) 0.00 0.10-0.25 0.05-0.10 0.01-0.05
11 AM MIXING HGT (FT) 3400 3000
MAX MIXING HGT (FT) 6800 5100
TRANSPORT WND (MPH) SW 26 N 11
VENT RATE (MPH-FT) 176800 61200
VENT RATE CATEGORY VERY GOOD FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE UPPER 50S. NORTH WINDS
5 TO 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 40. NORTHWEST WINDS
AROUND 5 MPH.
THURSDAY
PARTLY SUNNY. HIGHS IN THE LOWER 60S. WEST WINDS 5 TO
10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S. SOUTHWEST
WINDS AROUND 5 MPH.
FRIDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. SOUTHWEST WINDS
AROUND 10 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S. WEST WINDS
AROUND 5 MPH.
SATURDAY
SUNNY. HIGHS AROUND 70. WEST WINDS 5 TO 10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S. WEST
WINDS AROUND 5 MPH, BECOMING SOUTH AFTER MIDNIGHT.
SUNDAY
MOSTLY SUNNY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS AROUND 70. SOUTH WINDS AROUND 5 MPH, BECOMING WEST IN THE
AFTERNOON.
SUNDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S. NORTH WINDS
AROUND 5 MPH.
ILZ023-042115-
KANKAKEE-
INCLUDING THE CITIES OF KANKAKEE, BOURBONNAIS, AND BRADLEY
427 AM CDT MON MAY 4 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER MCLEAR PCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 30 70 60 30
MAX TEMP (24HR TREND) 79 (+13) 56
MIN RH % (24HR TREND) 38 (+3) 56
MIN TEMP (24HR TREND) 50 (+1) 40
MAX RH % (24HR TREND) 96 (+11) 89
20FT WIND AM (MPH) SW 15-20 N 5
20FT WIND PM (MPH) SW 15-20 SW 5-10 N 5 LGT/VAR
PEAK WIND GUSTS (MPH) 33 19
PRECIP AMOUNT (IN) 0.01-0.05 0.10-0.25 0.05-0.10 0.01-0.05
11 AM MIXING HGT (FT) 3400 3000
MAX MIXING HGT (FT) 7600 5100
TRANSPORT WND (MPH) SW 27 N 10
VENT RATE (MPH-FT) 212800 51000
VENT RATE CATEGORY EXCELLENT FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE UPPER 50S. NORTHWEST
WINDS AROUND 5 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 30S.
NORTHWEST WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
THURSDAY
PARTLY SUNNY. HIGHS IN THE UPPER 50S. NORTHWEST WINDS
5 TO 10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S. LIGHT
WINDS, BECOMING SOUTH AROUND 5 MPH AFTER MIDNIGHT.
FRIDAY
PARTLY SUNNY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS IN THE MID 60S. SOUTHWEST WINDS 5 TO 10 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S. WEST WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SATURDAY
SUNNY. HIGHS IN THE UPPER 60S. WEST WINDS 5 TO
10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. WEST WINDS AROUND 5 MPH,
BECOMING SOUTH AFTER MIDNIGHT.
SUNDAY
MOSTLY SUNNY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS IN THE UPPER 60S. SOUTH WINDS AROUND 5 MPH, BECOMING WEST
IN THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE MID 40S. NORTH WINDS AROUND 5 MPH,
BECOMING WEST AFTER MIDNIGHT.
ILZ039-042115-
FORD-
INCLUDING THE CITIES OF PAXTON AND GIBSON CITY
427 AM CDT MON MAY 4 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER MCLEAR PCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 80 70 40
MAX TEMP (24HR TREND) 78 (+11) 56
MIN RH % (24HR TREND) 41 (+7) 59
MIN TEMP (24HR TREND) 51 (0) 41
MAX RH % (24HR TREND) 93 (+11) 87
20FT WIND AM (MPH) SW 15-20 N 8-9
20FT WIND PM (MPH) SW 15-20 SW 8-12 N 8-9 NE 5-6
PEAK WIND GUSTS (MPH) 36 23 14
PRECIP AMOUNT (IN) 0.01-0.05 0.25-0.50 0.10-0.25 0.01-0.05
11 AM MIXING HGT (FT) 3500 2600
MAX MIXING HGT (FT) 6000 4500
TRANSPORT WND (MPH) SW 31 N 11
VENT RATE (MPH-FT) 186000 54000
VENT RATE CATEGORY VERY GOOD FAIR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE UPPER 50S. NORTH WINDS
5 TO 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 30S.
NORTHWEST WINDS AROUND 5 MPH.
THURSDAY
PARTLY SUNNY. HIGHS AROUND 60. NORTHWEST WINDS 5 TO
10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S. SOUTHWEST
WINDS AROUND 5 MPH.
FRIDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. SOUTHWEST WINDS
AROUND 10 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S. WEST WINDS
AROUND 5 MPH.
SATURDAY
SUNNY. HIGHS IN THE UPPER 60S. WEST WINDS AROUND
10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. WEST WINDS AROUND 5 MPH,
BECOMING SOUTH AFTER MIDNIGHT.
SUNDAY
MOSTLY SUNNY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS IN THE UPPER 60S. SOUTH WINDS AROUND 5 MPH, BECOMING
NORTHWEST IN THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHWEST WINDS AROUND
5 MPH.
ILZ033-042115-
IROQUOIS-
INCLUDING THE CITIES OF WATSEKA AND GILMAN
427 AM CDT MON MAY 4 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER MCLEAR PCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 80 70 40
MAX TEMP (24HR TREND) 78 (+12) 56
MIN RH % (24HR TREND) 39 (+5) 58
MIN TEMP (24HR TREND) 50 (0) 40
MAX RH % (24HR TREND) 93 (+12) 87
20FT WIND AM (MPH) SW 15-20 N 6
20FT WIND PM (MPH) SW 15-20 SW 6-10 NE 6 LGT/VAR
PEAK WIND GUSTS (MPH) 35 20
PRECIP AMOUNT (IN) 0.01-0.05 0.25-0.50 0.10-0.25 0.01-0.05
11 AM MIXING HGT (FT) 3600 2600
MAX MIXING HGT (FT) 6500 4700
TRANSPORT WND (MPH) SW 28 N 10
VENT RATE (MPH-FT) 188500 47000
VENT RATE CATEGORY EXCELLENT POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE UPPER 50S. NORTH WINDS
AROUND 5 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 30S. NORTH
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
THURSDAY
PARTLY SUNNY. HIGHS IN THE UPPER 50S. NORTHWEST WINDS
5 TO 10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S. LIGHT
WINDS, BECOMING SOUTHWEST AROUND 5 MPH AFTER MIDNIGHT.
FRIDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. SOUTHWEST WINDS
5 TO 10 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S. WEST WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SATURDAY
SUNNY. HIGHS IN THE UPPER 60S. WEST WINDS 5 TO
10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. WEST WINDS AROUND 5 MPH,
BECOMING SOUTH AFTER MIDNIGHT.
SUNDAY
MOSTLY SUNNY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS IN THE UPPER 60S. SOUTH WINDS AROUND 5 MPH, BECOMING WEST
IN THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE MID 40S. NORTH WINDS AROUND 5 MPH,
BECOMING WEST AFTER MIDNIGHT.
INZ010-042115-
NEWTON-
INCLUDING THE CITIES OF ROSELAWN, KENTLAND, AND MOROCCO
427 AM CDT MON MAY 4 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER MCLEAR PCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 80 70 40
MAX TEMP (24HR TREND) 78 (+16) 55
MIN RH % (24HR TREND) 41 (+3) 61
MIN TEMP (24HR TREND) 50 (+1) 41
MAX RH % (24HR TREND) 93 (+10) 88
20FT WIND AM (MPH) SW 15-20 N 5-6
20FT WIND PM (MPH) SW 15-20 SW 6-10 NE 5-6 LGT/VAR
PEAK WIND GUSTS (MPH) 33 20
PRECIP AMOUNT (IN) 0.01-0.05 0.25-0.50 0.10-0.25 0.01-0.05
11 AM MIXING HGT (FT) 3400 2500
MAX MIXING HGT (FT) 7000 4500
TRANSPORT WND (MPH) SW 29 N 8
VENT RATE (MPH-FT) 210000 36000
VENT RATE CATEGORY EXCELLENT POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE MID 50S. NORTH WINDS
AROUND 5 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 30S. NORTH
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
THURSDAY
PARTLY SUNNY. HIGHS IN THE UPPER 50S. NORTHWEST WINDS
5 TO 10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S. LIGHT
WINDS, BECOMING SOUTH AROUND 5 MPH AFTER MIDNIGHT.
FRIDAY
PARTLY SUNNY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS IN THE LOWER 60S. SOUTHWEST WINDS 5 TO 10 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S. LIGHT
WINDS.
SATURDAY
SUNNY. HIGHS IN THE UPPER 60S. WEST WINDS AROUND
5 MPH.
SATURDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. WEST WINDS AROUND 5 MPH,
BECOMING SOUTH AFTER MIDNIGHT.
SUNDAY
MOSTLY SUNNY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS IN THE UPPER 60S. SOUTHWEST WINDS AROUND 5 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE MID 40S. NORTH WINDS AROUND 5 MPH,
BECOMING WEST AFTER MIDNIGHT.
INZ011-042115-
JASPER-
INCLUDING THE CITIES OF RENSSELAER AND DEMOTTE
427 AM CDT MON MAY 4 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER MCLEAR PCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS SHOWERS SHOWERS
CHANCE PRECIP (%) 40 70 70 40
MAX TEMP (24HR TREND) 77 (+16) 54
MIN RH % (24HR TREND) 42 (+1) 63
MIN TEMP (24HR TREND) 50 (+1) 41
MAX RH % (24HR TREND) 93 (+11) 88
20FT WIND AM (MPH) SW 15-20 N 6
20FT WIND PM (MPH) SW 15-20 SW 6-11 N 6 LGT/VAR
PEAK WIND GUSTS (MPH) 33 21
PRECIP AMOUNT (IN) 0.01-0.05 0.25-0.50 0.10-0.25 0.01-0.05
11 AM MIXING HGT (FT) 3300 2300
MAX MIXING HGT (FT) 7300 3900
TRANSPORT WND (MPH) SW 31 N 10
VENT RATE (MPH-FT) 226300 39000
VENT RATE CATEGORY EXCELLENT POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE MID 50S. NORTH WINDS
AROUND 5 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 40. NORTH WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
THURSDAY
PARTLY SUNNY. HIGHS IN THE UPPER 50S. NORTHWEST WINDS
5 TO 10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S. LIGHT
WINDS, BECOMING SOUTH AROUND 5 MPH AFTER MIDNIGHT.
FRIDAY
PARTLY SUNNY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS IN THE LOWER 60S. SOUTHWEST WINDS 5 TO 10 MPH.
FRIDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S. WEST WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SATURDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. WEST WINDS
AROUND 5 MPH.
SATURDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. WEST WINDS AROUND 5 MPH,
BECOMING SOUTH AFTER MIDNIGHT.
SUNDAY
MOSTLY SUNNY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS IN THE MID 60S. WEST WINDS AROUND 5 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE MID 40S. NORTH WINDS AROUND 5 MPH,
BECOMING WEST AFTER MIDNIGHT.
INZ019-042115-
BENTON-
INCLUDING THE CITIES OF FOWLER AND OXFORD
527 AM EDT MON MAY 4 2026
TODAY TONIGHT TUE TUE NIGHT
CLOUD COVER MCLEAR PCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS TSTMS SHOWERS
CHANCE PRECIP (%) 50 80 80 50
MAX TEMP (24HR TREND) 76 (+14) 55
MIN RH % (24HR TREND) 43 (+2) 66
MIN TEMP (24HR TREND) 51 (+2) 41
MAX RH % (24HR TREND) 92 (+10) 89
20FT WIND AM (MPH) SW 15-20 N 6-7
20FT WIND PM (MPH) SW 15-20 SW 7-12 N 6-7 LGT/VAR
PEAK WIND GUSTS (MPH) 33 21
PRECIP AMOUNT (IN) 0.01-0.05 0.25-0.50 0.25-0.50 0.05-0.10
11 AM MIXING HGT (FT) 3200 2000
MAX MIXING HGT (FT) 5800 3500
TRANSPORT WND (MPH) SW 31 N 9
VENT RATE (MPH-FT) 179800 31500
VENT RATE CATEGORY VERY GOOD POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
WEDNESDAY
MOSTLY SUNNY IN THE MORNING, THEN BECOMING MOSTLY
CLOUDY. HIGHS IN THE UPPER 50S. NORTH WINDS AROUND 5 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 40. NORTH WINDS
AROUND 5 MPH.
THURSDAY
PARTLY SUNNY. HIGHS IN THE UPPER 50S. NORTHWEST WINDS
5 TO 10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S. LIGHT
WINDS, BECOMING SOUTHWEST AROUND 5 MPH AFTER MIDNIGHT.
FRIDAY
PARTLY SUNNY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS IN THE LOWER 60S. SOUTHWEST WINDS 5 TO 10 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS IN THE
EVENING, THEN PARTLY CLOUDY AFTER MIDNIGHT. LOWS IN THE LOWER
40S. LIGHT WINDS.
SATURDAY
SUNNY. HIGHS IN THE UPPER 60S. WEST WINDS 5 TO
10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. SOUTHWEST WINDS AROUND
5 MPH.
SUNDAY
MOSTLY SUNNY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS IN THE UPPER 60S. SOUTHWEST WINDS AROUND 5 MPH, BECOMING
WEST IN THE AFTERNOON.
SUNDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE UPPER 40S. NORTH WINDS AROUND 5 MPH,
BECOMING WEST AFTER MIDNIGHT.
- IZZI
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