657
FNUS53 KLOT 181150
FWFLOT
FIRE WEATHER PLANNING FORECAST FOR NORTHERN IL AND NORTHWEST IN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
650 AM CDT FRI SEP 18 2026
DISCUSSION
MAINLY DRY WEATHER IS EXPECTED ACROSS THE AREA THROUGH THIS
EVENING, BEFORE SHOWER AND THUNDERSTORM CHANCES RAMP UP OVERNIGHT
TONIGHT. SEVERAL WAVES OF SHOWERS AND THUNDERSTORMS ARE EXPECTED
TO AFFECT THE AREA FROM LATE TONIGHT THROUGH SUNDAY NIGHT, WITH
LOCALLY HEAVY RAINFALL AMOUNTS POSSIBLE ESPECIALLY ALONG AND
NORTH OF THE I-80 CORRIDOR.
SHOWER CHANCES WILL GRADUALLY TAPER OFF EARLY NEXT WEEK, WITH
DRIER AND COOLER THAN AVERAGE WEATHER CONDITIONS EXPECTED BY
MID-WEEK.
ILZ014-182115-
COOK-
INCLUDING THE CITIES OF CHICAGO, SCHAUMBURG, EVANSTON, OAK LAWN,
LEMONT, ORLAND PARK, AND PARK FOREST
650 AM CDT FRI SEP 18 2026
TODAY TONIGHT SAT SAT NIGHT
CLOUD COVER PCLDY MCLDY CLOUDY CLOUDY
PRECIP TYPE NONE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 70 100 90
MAX TEMP (24HR TREND) 72 (-8) 75
MIN RH % (24HR TREND) 68 (-7) 83
MIN TEMP (24HR TREND) 59 (-5) 60
MAX RH % (24HR TREND) 98 (+4) 100
20FT WIND AM (MPH) E 9-10 SE 7-10
20FT WIND PM (MPH) E 9-10 E 9-10 S 7-10 NE 5-6
PEAK WIND GUSTS (MPH) 17 18 18
PRECIP AMOUNT (IN) 0.00 0.25-0.50 0.75-1.00 0.75-1.00
11 AM MIXING HGT (FT) 2400 1100
MAX MIXING HGT (FT) 2500 1600
TRANSPORT WND (MPH) E 12 S 9
VENT RATE (MPH-FT) 32500 14400
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SUNDAY
CLOUDY WITH SHOWERS LIKELY. HIGHS IN THE UPPER 60S.
NORTHEAST WINDS 10 TO 15 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE MID 50S. NORTHEAST WINDS AROUND 15 MPH.
MONDAY
MOSTLY CLOUDY. SHOWERS LIKELY, MAINLY IN THE MORNING.
HIGHS IN THE LOWER 60S. NORTHEAST WINDS AROUND 15 MPH.
MONDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE LOWER 50S. NORTHEAST WINDS 10 TO 15 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 60S. NORTHEAST WINDS
AROUND 15 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST
WINDS 5 TO 10 MPH.
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTH WINDS
AROUND 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. NORTH
WINDS AROUND 5 MPH.
THURSDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. NORTH WINDS
5 TO 10 MPH.
THURSDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE MID 50S. NORTH WINDS AROUND 5 MPH.
ILZ006-182115-
LAKE IL-
INCLUDING THE CITIES OF WAUKEGAN, BUFFALO GROVE, MUNDELEIN,
AND GURNEE
650 AM CDT FRI SEP 18 2026
TODAY TONIGHT SAT SAT NIGHT
CLOUD COVER PCLDY CLOUDY CLOUDY CLOUDY
PRECIP TYPE NONE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 10 90 100 80
MAX TEMP (24HR TREND) 70 (-2) 72
MIN RH % (24HR TREND) 72 (-21) 92
MIN TEMP (24HR TREND) 57 (-4) 57
MAX RH % (24HR TREND) 100 (+1) 100
20FT WIND AM (MPH) E 9-11 SE 8-11
20FT WIND PM (MPH) E 9-11 E 10-12 E 8-11 NE 8
PEAK WIND GUSTS (MPH) 17 19 19 15
PRECIP AMOUNT (IN) 0.00 0.75-1.00 0.75-1.00 0.75-1.00
11 AM MIXING HGT (FT) 2600 1200
MAX MIXING HGT (FT) 2600 1400
TRANSPORT WND (MPH) E 14 SE 10
VENT RATE (MPH-FT) 39000 14000
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SUNDAY
MOSTLY CLOUDY. SHOWERS LIKELY, MAINLY IN THE MORNING.
HIGHS IN THE MID 60S. NORTHEAST WINDS AROUND 15 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS AFTER
MIDNIGHT. LOWS IN THE LOWER 50S. NORTHEAST WINDS AROUND 15 MPH.
MONDAY
CLOUDY WITH A CHANCE OF SHOWERS. HIGHS IN THE LOWER
60S. EAST WINDS AROUND 15 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS AFTER
MIDNIGHT. LOWS AROUND 50. NORTHEAST WINDS 10 TO 15 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 60S. NORTHEAST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 50. NORTHEAST WINDS
AROUND 5 MPH.
WEDNESDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 60S. NORTH WINDS
AROUND 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. NORTH
WINDS AROUND 5 MPH.
THURSDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. NORTH WINDS
AROUND 5 MPH.
THURSDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE LOWER 50S. LIGHT WINDS.
INZ001-182115-
LAKE IN-
INCLUDING THE CITIES OF GARY, HAMMOND, AND MERRILLVILLE
650 AM CDT FRI SEP 18 2026
TODAY TONIGHT SAT SAT NIGHT
CLOUD COVER PCLDY PCLDY CLOUDY CLOUDY
PRECIP TYPE NONE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 60 100 90
MAX TEMP (24HR TREND) 74 (-9) 75
MIN RH % (24HR TREND) 67 (+1) 85
MIN TEMP (24HR TREND) 57 (-8) 61
MAX RH % (24HR TREND) 96 (-1) 100
20FT WIND AM (MPH) NE 7 SE 6-8
20FT WIND PM (MPH) E 7 E 6-8 S 6-8 LGT/VAR
PEAK WIND GUSTS (MPH) 16 15
PRECIP AMOUNT (IN) 0.00 0.10-0.25 0.75-1.00 0.50-0.75
11 AM MIXING HGT (FT) 2100 1100
MAX MIXING HGT (FT) 2900 1500
TRANSPORT WND (MPH) E 9 S 10
VENT RATE (MPH-FT) 26100 15000
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SUNDAY
SHOWERS. HIGHS AROUND 70. NORTHEAST WINDS 5 TO 10 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE LOWER 50S. NORTHEAST WINDS 10 TO
15 MPH.
MONDAY
MOSTLY CLOUDY. SHOWERS LIKELY, MAINLY IN THE MORNING.
HIGHS IN THE MID 60S. NORTHEAST WINDS 10 TO 15 MPH.
MONDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE LOWER 50S. NORTHEAST WINDS AROUND 10 MPH.
TUESDAY
PARTLY SUNNY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS IN THE LOWER 60S. NORTHEAST WINDS AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 50. NORTHEAST WINDS
5 TO 10 MPH.
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTH WINDS 5 TO
10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. NORTH
WINDS AROUND 5 MPH.
THURSDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. NORTH WINDS
5 TO 10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. NORTH
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
INZ002-182115-
PORTER-
INCLUDING THE CITIES OF PORTAGE, VALPARAISO, AND CHESTERTON
650 AM CDT FRI SEP 18 2026
TODAY TONIGHT SAT SAT NIGHT
CLOUD COVER PCLDY PCLDY CLOUDY CLOUDY
PRECIP TYPE NONE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 60 100 90
MAX TEMP (24HR TREND) 74 (-8) 75
MIN RH % (24HR TREND) 63 (-7) 82
MIN TEMP (24HR TREND) 57 (-7) 61
MAX RH % (24HR TREND) 95 (-3) 100
20FT WIND AM (MPH) E 7 SE 7-9
20FT WIND PM (MPH) E 7 E 6-8 S 7-9 LGT/VAR
PEAK WIND GUSTS (MPH) 16 16
PRECIP AMOUNT (IN) 0.00 0.10-0.25 0.75-1.00 0.50-0.75
11 AM MIXING HGT (FT) 2000 1100
MAX MIXING HGT (FT) 3000 1400
TRANSPORT WND (MPH) E 10 S 10
VENT RATE (MPH-FT) 30000 14000
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SUNDAY
SHOWERS. HIGHS AROUND 70. NORTHEAST WINDS 5 TO 10 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE LOWER 50S. NORTHEAST WINDS AROUND
10 MPH.
MONDAY
MOSTLY CLOUDY. SHOWERS LIKELY, MAINLY IN THE MORNING.
HIGHS IN THE MID 60S. NORTHEAST WINDS AROUND 10 MPH.
MONDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS
AROUND 50. NORTHEAST WINDS AROUND 10 MPH.
TUESDAY
PARTLY SUNNY. A CHANCE OF SHOWERS IN THE AFTERNOON.
HIGHS IN THE LOWER 60S. NORTHEAST WINDS AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 50. NORTHEAST WINDS
5 TO 10 MPH.
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTH WINDS 5 TO
10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 50. NORTH WINDS
AROUND 5 MPH.
THURSDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. NORTH WINDS
5 TO 10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. NORTH
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
ILZ013-182115-
DUPAGE-
INCLUDING THE CITIES OF NAPERVILLE, WHEATON, DOWNERS GROVE,
LOMBARD, AND CAROL STREAM
650 AM CDT FRI SEP 18 2026
TODAY TONIGHT SAT SAT NIGHT
CLOUD COVER PCLDY MCLDY CLOUDY CLOUDY
PRECIP TYPE NONE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 80 100 90
MAX TEMP (24HR TREND) 72 (-10) 74
MIN RH % (24HR TREND) 70 (-5) 86
MIN TEMP (24HR TREND) 59 (-5) 61
MAX RH % (24HR TREND) 100 (+6) 100
20FT WIND AM (MPH) E 9-10 SE 7-9
20FT WIND PM (MPH) E 9-10 E 9 S 7-9 NE 5-6
PEAK WIND GUSTS (MPH) 17 16 16
PRECIP AMOUNT (IN) 0.00 0.25-0.50 0.75-1.00 0.75-1.00
11 AM MIXING HGT (FT) 2500 1000
MAX MIXING HGT (FT) 2500 1500
TRANSPORT WND (MPH) E 14 S 9
VENT RATE (MPH-FT) 37500 13500
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SUNDAY
CLOUDY. SHOWERS LIKELY, MAINLY IN THE MORNING. HIGHS IN
THE UPPER 60S. NORTHEAST WINDS 10 TO 15 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE MID 50S. NORTHEAST WINDS AROUND 15 MPH.
MONDAY
MOSTLY CLOUDY. SHOWERS LIKELY, MAINLY IN THE MORNING.
HIGHS IN THE LOWER 60S. NORTHEAST WINDS AROUND 15 MPH.
MONDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE LOWER 50S. NORTHEAST WINDS 10 TO 15 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 60S. NORTHEAST WINDS
AROUND 15 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST
WINDS 5 TO 10 MPH.
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTH WINDS
AROUND 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. NORTH
WINDS AROUND 5 MPH.
THURSDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. NORTH WINDS
AROUND 5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. NORTH
WINDS AROUND 5 MPH.
ILZ012-182115-
KANE-
INCLUDING THE CITIES OF AURORA AND ELGIN
650 AM CDT FRI SEP 18 2026
TODAY TONIGHT SAT SAT NIGHT
CLOUD COVER PCLDY MCLDY CLOUDY CLOUDY
PRECIP TYPE NONE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 10 80 100 90
MAX TEMP (24HR TREND) 72 (-8) 74
MIN RH % (24HR TREND) 72 (-6) 87
MIN TEMP (24HR TREND) 58 (-4) 60
MAX RH % (24HR TREND) 100 (+5) 100
20FT WIND AM (MPH) NE 9-10 SE 7-9
20FT WIND PM (MPH) E 9-10 E 9 SE 7-9 NE 5-6
PEAK WIND GUSTS (MPH) 18 16 17
PRECIP AMOUNT (IN) 0.00 0.50-0.75 0.75-1.00 0.75-1.00
11 AM MIXING HGT (FT) 2500 1100
MAX MIXING HGT (FT) 2500 1500
TRANSPORT WND (MPH) E 13 SE 10
VENT RATE (MPH-FT) 35000 15000
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SUNDAY
CLOUDY. SHOWERS LIKELY, MAINLY IN THE MORNING. HIGHS IN
THE UPPER 60S. NORTHEAST WINDS 10 TO 15 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE LOWER 50S. NORTHEAST WINDS AROUND 15 MPH.
MONDAY
MOSTLY CLOUDY. SHOWERS LIKELY, MAINLY IN THE MORNING.
HIGHS IN THE LOWER 60S. NORTHEAST WINDS AROUND 15 MPH.
MONDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS
AROUND 50. NORTHEAST WINDS 10 TO 15 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 60S. NORTHEAST WINDS
AROUND 15 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHEAST
WINDS 5 TO 10 MPH.
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTH WINDS
AROUND 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. NORTH
WINDS AROUND 5 MPH.
THURSDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. NORTH WINDS
AROUND 5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 50. NORTH WINDS
AROUND 5 MPH.
ILZ005-182115-
MCHENRY-
INCLUDING THE CITIES OF CRYSTAL LAKE, ALGONQUIN, MCHENRY,
AND WOODSTOCK
650 AM CDT FRI SEP 18 2026
TODAY TONIGHT SAT SAT NIGHT
CLOUD COVER PCLDY CLOUDY CLOUDY CLOUDY
PRECIP TYPE NONE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 10 90 100 80
MAX TEMP (24HR TREND) 70 (-3) 72
MIN RH % (24HR TREND) 73 (-16) 93
MIN TEMP (24HR TREND) 57 (-3) 58
MAX RH % (24HR TREND) 100 (+3) 100
20FT WIND AM (MPH) E 8-10 SE 7-10
20FT WIND PM (MPH) E 8-10 E 9 E 7-10 NE 6
PEAK WIND GUSTS (MPH) 18 17 17
PRECIP AMOUNT (IN) 0.00 0.75-1.00 1.00-1.50 0.75-1.00
11 AM MIXING HGT (FT) 2700 1200
MAX MIXING HGT (FT) 2700 1400
TRANSPORT WND (MPH) E 14 SE 11
VENT RATE (MPH-FT) 40500 16800
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SUNDAY
CLOUDY. SHOWERS LIKELY, MAINLY IN THE MORNING. HIGHS IN
THE MID 60S. NORTHEAST WINDS AROUND 15 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS AFTER
MIDNIGHT. LOWS IN THE LOWER 50S. NORTHEAST WINDS AROUND 15 MPH.
MONDAY
CLOUDY WITH A CHANCE OF SHOWERS. HIGHS IN THE LOWER
60S. EAST WINDS AROUND 15 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS AFTER
MIDNIGHT. LOWS IN THE UPPER 40S. NORTHEAST WINDS AROUND 10 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 60S. NORTHEAST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHEAST WINDS AROUND
5 MPH.
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE LOWER 60S. NORTH WINDS
5 TO 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. NORTH
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
THURSDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. NORTH WINDS
AROUND 5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S. LIGHT
WINDS.
ILZ004-182115-
BOONE-
INCLUDING THE CITY OF BELVIDERE
650 AM CDT FRI SEP 18 2026
TODAY TONIGHT SAT SAT NIGHT
CLOUD COVER MCLDY MCLDY CLOUDY CLOUDY
PRECIP TYPE SHOWERS TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 20 90 100 80
MAX TEMP (24HR TREND) 71 (-1) 74
MIN RH % (24HR TREND) 70 (-19) 90
MIN TEMP (24HR TREND) 58 (-2) 58
MAX RH % (24HR TREND) 100 (+4) 100
20FT WIND AM (MPH) E 8-11 SE 7-9
20FT WIND PM (MPH) E 8-11 E 9-10 E 7-9 NE 6
PEAK WIND GUSTS (MPH) 19 18 16
PRECIP AMOUNT (IN) 0.01-0.05 0.75-1.00 0.75-1.00 0.75-1.00
11 AM MIXING HGT (FT) 2700 1200
MAX MIXING HGT (FT) 2700 1500
TRANSPORT WND (MPH) E 16 E 11
VENT RATE (MPH-FT) 43200 18000
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SUNDAY
MOSTLY CLOUDY. SHOWERS LIKELY, MAINLY IN THE MORNING.
HIGHS IN THE MID 60S. NORTHEAST WINDS AROUND 15 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS AFTER
MIDNIGHT. LOWS IN THE LOWER 50S. NORTHEAST WINDS AROUND 15 MPH.
MONDAY
CLOUDY WITH A CHANCE OF SHOWERS. HIGHS IN THE LOWER
60S. NORTHEAST WINDS AROUND 15 MPH.
MONDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS AFTER
MIDNIGHT. LOWS IN THE UPPER 40S. NORTHEAST WINDS 10 TO 15 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 60S. NORTHEAST WINDS
AROUND 15 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHEAST WINDS 5 TO
10 MPH.
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 40S. NORTH
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
THURSDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. NORTH WINDS
AROUND 5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S. LIGHT
WINDS.
ILZ011-182115-
DE KALB-
INCLUDING THE CITIES OF DEKALB AND SYCAMORE
650 AM CDT FRI SEP 18 2026
TODAY TONIGHT SAT SAT NIGHT
CLOUD COVER MCLDY MCLDY CLOUDY CLOUDY
PRECIP TYPE NONE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 20 80 100 90
MAX TEMP (24HR TREND) 72 (-9) 75
MIN RH % (24HR TREND) 69 (-8) 83
MIN TEMP (24HR TREND) 59 (-4) 59
MAX RH % (24HR TREND) 100 (+2) 100
20FT WIND AM (MPH) E 9-10 SE 7-10
20FT WIND PM (MPH) E 9-10 E 9-10 S 7-10 NE 5-6
PEAK WIND GUSTS (MPH) 18 17 17
PRECIP AMOUNT (IN) 0.00 0.25-0.50 0.75-1.00 0.75-1.00
11 AM MIXING HGT (FT) 2600 1000
MAX MIXING HGT (FT) 2600 1500
TRANSPORT WND (MPH) E 13 S 10
VENT RATE (MPH-FT) 36400 15000
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SUNDAY
MOSTLY CLOUDY. SHOWERS LIKELY, MAINLY IN THE MORNING.
HIGHS IN THE UPPER 60S. NORTHEAST WINDS 10 TO 15 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE LOWER 50S. NORTHEAST WINDS AROUND 15 MPH.
MONDAY
MOSTLY CLOUDY. SHOWERS LIKELY, MAINLY IN THE MORNING.
HIGHS IN THE LOWER 60S. EAST WINDS AROUND 15 MPH.
MONDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE UPPER 40S. NORTHEAST WINDS 10 TO 15 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 60S. NORTHEAST WINDS
AROUND 15 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHEAST WINDS 5 TO
10 MPH.
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTH WINDS
AROUND 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. NORTH
WINDS AROUND 5 MPH.
THURSDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. NORTH WINDS
AROUND 5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 50. NORTH WINDS
AROUND 5 MPH.
ILZ003-182115-
WINNEBAGO-
INCLUDING THE CITY OF ROCKFORD
650 AM CDT FRI SEP 18 2026
TODAY TONIGHT SAT SAT NIGHT
CLOUD COVER MCLDY MCLDY CLOUDY MCLDY
PRECIP TYPE SHOWERS TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 20 90 100 80
MAX TEMP (24HR TREND) 71 (-1) 73
MIN RH % (24HR TREND) 70 (-19) 90
MIN TEMP (24HR TREND) 58 (-3) 57
MAX RH % (24HR TREND) 100 (+4) 100
20FT WIND AM (MPH) E 8-11 SE 7-10
20FT WIND PM (MPH) E 8-11 E 10-11 E 7-10 NE 7-8
PEAK WIND GUSTS (MPH) 18 18 17
PRECIP AMOUNT (IN) 0.01-0.05 0.75-1.00 0.75-1.00 0.75-1.00
11 AM MIXING HGT (FT) 2400 1200
MAX MIXING HGT (FT) 2600 1600
TRANSPORT WND (MPH) E 14 SE 12
VENT RATE (MPH-FT) 39000 20800
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SUNDAY
MOSTLY CLOUDY. SHOWERS LIKELY, MAINLY IN THE MORNING.
HIGHS IN THE MID 60S. NORTHEAST WINDS AROUND 15 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS AFTER
MIDNIGHT. LOWS AROUND 50. NORTHEAST WINDS AROUND 15 MPH.
MONDAY
CLOUDY WITH A CHANCE OF SHOWERS. HIGHS IN THE LOWER
60S. NORTHEAST WINDS AROUND 15 MPH.
MONDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE UPPER 40S. NORTHEAST WINDS 10 TO 15 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 60S. NORTHEAST WINDS
AROUND 15 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE MID 40S. NORTHEAST WINDS 5 TO 10 MPH.
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE MID 40S. NORTH WINDS AROUND 5 MPH IN
THE EVENING, BECOMING LIGHT.
THURSDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. NORTH WINDS
AROUND 5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S. LIGHT
WINDS.
ILZ008-182115-
OGLE-
INCLUDING THE CITIES OF ROCHELLE, OREGON, AND BYRON
650 AM CDT FRI SEP 18 2026
TODAY TONIGHT SAT SAT NIGHT
CLOUD COVER MCLDY MCLDY CLOUDY MCLDY
PRECIP TYPE SHOWERS TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 20 80 100 90
MAX TEMP (24HR TREND) 72 (-7) 75
MIN RH % (24HR TREND) 69 (-12) 86
MIN TEMP (24HR TREND) 59 (-3) 58
MAX RH % (24HR TREND) 100 (+2) 100
20FT WIND AM (MPH) E 8-10 SE 7-10
20FT WIND PM (MPH) E 8-10 E 9-10 SE 7-10 NE 6
PEAK WIND GUSTS (MPH) 18 18 17
PRECIP AMOUNT (IN) 0.01-0.05 0.50-0.75 0.75-1.00 1.00-1.50
11 AM MIXING HGT (FT) 2300 1200
MAX MIXING HGT (FT) 2500 1600
TRANSPORT WND (MPH) E 16 S 13
VENT RATE (MPH-FT) 40000 22400
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SUNDAY
MOSTLY CLOUDY. SHOWERS LIKELY, MAINLY IN THE MORNING.
HIGHS IN THE UPPER 60S. NORTHEAST WINDS 10 TO 15 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE LOWER 50S. NORTHEAST WINDS AROUND 15 MPH.
MONDAY
MOSTLY CLOUDY. SHOWERS LIKELY, MAINLY IN THE MORNING.
HIGHS IN THE LOWER 60S. NORTHEAST WINDS AROUND 15 MPH.
MONDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE UPPER 40S. NORTHEAST WINDS 10 TO 15 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 60S. NORTHEAST WINDS
AROUND 15 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE MID 40S. NORTHEAST WINDS 5 TO 10 MPH.
WEDNESDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S. NORTH WINDS
AROUND 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE MID 40S. NORTH WINDS AROUND 5 MPH IN
THE EVENING, BECOMING LIGHT.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. NORTH WINDS
AROUND 5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE UPPER 40S. LIGHT
WINDS.
ILZ010-182115-
LEE-
INCLUDING THE CITY OF DIXON
650 AM CDT FRI SEP 18 2026
TODAY TONIGHT SAT SAT NIGHT
CLOUD COVER MCLDY MCLDY CLOUDY MCLDY
PRECIP TYPE SHOWERS TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 20 80 100 90
MAX TEMP (24HR TREND) 73 (-11) 77
MIN RH % (24HR TREND) 72 (+2) 82
MIN TEMP (24HR TREND) 60 (-4) 60
MAX RH % (24HR TREND) 100 (0) 100
20FT WIND AM (MPH) E 8-9 SE 6-9
20FT WIND PM (MPH) E 8-9 E 9-10 S 6-9 NE 5-6
PEAK WIND GUSTS (MPH) 17 17 16
PRECIP AMOUNT (IN) 0.01-0.05 0.25-0.50 0.75-1.00 0.75-1.00
11 AM MIXING HGT (FT) 2200 1100
MAX MIXING HGT (FT) 2500 1600
TRANSPORT WND (MPH) E 14 S 14
VENT RATE (MPH-FT) 37500 24000
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SUNDAY
SHOWERS. HIGHS IN THE UPPER 60S. NORTHEAST WINDS 10 TO
15 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE
EVENING, THEN SHOWERS LIKELY AND A CHANCE OF THUNDERSTORMS AFTER
MIDNIGHT. LOWS IN THE LOWER 50S. NORTHEAST WINDS AROUND 15 MPH.
MONDAY
MOSTLY CLOUDY. SHOWERS LIKELY, MAINLY IN THE MORNING.
HIGHS IN THE LOWER 60S. NORTHEAST WINDS AROUND 15 MPH.
MONDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS
AROUND 50. NORTHEAST WINDS 10 TO 15 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 60S. NORTHEAST WINDS
AROUND 15 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHEAST WINDS 5 TO
10 MPH.
WEDNESDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S. NORTH WINDS
AROUND 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE UPPER 40S. NORTH WINDS AROUND 5 MPH IN
THE EVENING, BECOMING LIGHT.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. NORTH WINDS
AROUND 5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 50. NORTH WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
ILZ019-182115-
LA SALLE-
INCLUDING THE CITIES OF OTTAWA, STREATOR, LA SALLE, MENDOTA,
AND MARSEILLES
650 AM CDT FRI SEP 18 2026
TODAY TONIGHT SAT SAT NIGHT
CLOUD COVER PCLDY PCLDY CLOUDY MCLDY
PRECIP TYPE SHOWERS TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 20 70 100 90
MAX TEMP (24HR TREND) 77 (-10) 80
MIN RH % (24HR TREND) 68 (+7) 77
MIN TEMP (24HR TREND) 62 (-4) 63
MAX RH % (24HR TREND) 99 (+3) 100
20FT WIND AM (MPH) NE 7-9 SE 6-8
20FT WIND PM (MPH) E 7-9 E 8 S 6-8 LGT/VAR
PEAK WIND GUSTS (MPH) 16 16
PRECIP AMOUNT (IN) 0.00 0.25-0.50 0.50-0.75 0.50-0.75
11 AM MIXING HGT (FT) 2100 1000
MAX MIXING HGT (FT) 2500 1700
TRANSPORT WND (MPH) E 11 S 11
VENT RATE (MPH-FT) 30000 20400
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SUNDAY
SHOWERS. HIGHS IN THE LOWER 70S. NORTHEAST WINDS 10 TO
15 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF THUNDERSTORMS. A
CHANCE OF SHOWERS IN THE EVENING, THEN SHOWERS LIKELY AFTER
MIDNIGHT. LOWS IN THE MID 50S. NORTHEAST WINDS AROUND 15 MPH.
MONDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY. HIGHS IN THE MID
60S. NORTHEAST WINDS AROUND 15 MPH.
MONDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE LOWER 50S. NORTHEAST WINDS 10 TO 15 MPH.
TUESDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST WINDS 5 TO
10 MPH.
WEDNESDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. NORTH WINDS
5 TO 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE LOWER 50S. NORTH WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS AROUND 70. NORTH WINDS AROUND
5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. NORTH
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
ILZ020-182115-
KENDALL-
INCLUDING THE CITIES OF OSWEGO, YORKVILLE, AND PLANO
650 AM CDT FRI SEP 18 2026
TODAY TONIGHT SAT SAT NIGHT
CLOUD COVER MCLDY MCLDY CLOUDY MCLDY
PRECIP TYPE NONE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 10 70 100 90
MAX TEMP (24HR TREND) 74 (-11) 77
MIN RH % (24HR TREND) 70 (+2) 83
MIN TEMP (24HR TREND) 61 (-3) 63
MAX RH % (24HR TREND) 100 (+3) 100
20FT WIND AM (MPH) NE 8-9 SE 7-9
20FT WIND PM (MPH) E 8-9 E 8-9 S 7-9 NE 5-6
PEAK WIND GUSTS (MPH) 16 16 15
PRECIP AMOUNT (IN) 0.00 0.25-0.50 0.75-1.00 0.75-1.00
11 AM MIXING HGT (FT) 2300 1000
MAX MIXING HGT (FT) 2800 1500
TRANSPORT WND (MPH) E 11 S 9
VENT RATE (MPH-FT) 33600 13500
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SUNDAY
SHOWERS. HIGHS AROUND 70. NORTHEAST WINDS 10 TO 15 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF THUNDERSTORMS. A
CHANCE OF SHOWERS IN THE EVENING, THEN SHOWERS LIKELY AFTER
MIDNIGHT. LOWS IN THE MID 50S. NORTHEAST WINDS AROUND 15 MPH.
MONDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY. HIGHS IN THE MID
60S. NORTHEAST WINDS AROUND 15 MPH.
MONDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE LOWER 50S. NORTHEAST WINDS 10 TO 15 MPH.
TUESDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 15 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST
WINDS 5 TO 10 MPH.
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTH WINDS
AROUND 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 50. NORTH WINDS
AROUND 5 MPH.
THURSDAY
PARTLY SUNNY. HIGHS AROUND 70. NORTH WINDS 5 TO
10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. NORTH
WINDS AROUND 5 MPH.
ILZ021-182115-
GRUNDY-
INCLUDING THE CITIES OF MORRIS, COAL CITY, AND MINOOKA
650 AM CDT FRI SEP 18 2026
TODAY TONIGHT SAT SAT NIGHT
CLOUD COVER MCLDY PCLDY CLOUDY MCLDY
PRECIP TYPE NONE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 10 70 100 90
MAX TEMP (24HR TREND) 77 (-12) 81
MIN RH % (24HR TREND) 71 (+10) 80
MIN TEMP (24HR TREND) 62 (-4) 65
MAX RH % (24HR TREND) 96 (-2) 100
20FT WIND AM (MPH) NE 7-8 SE 6-7
20FT WIND PM (MPH) E 7-8 E 6-7 S 6-7 LGT/VAR
PEAK WIND GUSTS (MPH) 15
PRECIP AMOUNT (IN) 0.00 0.25-0.50 0.50-0.75 0.50-0.75
11 AM MIXING HGT (FT) 2100 1000
MAX MIXING HGT (FT) 2700 1600
TRANSPORT WND (MPH) E 10 S 10
VENT RATE (MPH-FT) 27000 16000
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SUNDAY
SHOWERS. HIGHS IN THE LOWER 70S. NORTHEAST WINDS 5 TO
10 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF THUNDERSTORMS. A
CHANCE OF SHOWERS IN THE EVENING, THEN SHOWERS LIKELY AFTER
MIDNIGHT. LOWS IN THE MID 50S. NORTHEAST WINDS 10 TO 15 MPH.
MONDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY. HIGHS IN THE MID
60S. NORTHEAST WINDS 10 TO 15 MPH.
MONDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE LOWER 50S. NORTHEAST WINDS AROUND 10 MPH.
TUESDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST
WINDS AROUND 5 MPH.
WEDNESDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. NORTH WINDS
AROUND 5 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 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 LOWER 50S. LIGHT
WINDS.
ILZ022-182115-
WILL-
INCLUDING THE CITIES OF JOLIET, BOLINGBROOK, AND WILMINGTON
650 AM CDT FRI SEP 18 2026
TODAY TONIGHT SAT SAT NIGHT
CLOUD COVER PCLDY PCLDY CLOUDY CLOUDY
PRECIP TYPE NONE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 10 70 100 90
MAX TEMP (24HR TREND) 75 (-11) 77
MIN RH % (24HR TREND) 69 (+3) 84
MIN TEMP (24HR TREND) 59 (-6) 62
MAX RH % (24HR TREND) 98 (+1) 100
20FT WIND AM (MPH) NE 7-8 SE 6-8
20FT WIND PM (MPH) E 7-8 E 8-9 S 6-8 LGT/VAR
PEAK WIND GUSTS (MPH) 16 16 15
PRECIP AMOUNT (IN) 0.00 0.25-0.50 0.75-1.00 0.50-0.75
11 AM MIXING HGT (FT) 2200 1000
MAX MIXING HGT (FT) 2700 1500
TRANSPORT WND (MPH) E 10 S 9
VENT RATE (MPH-FT) 27000 13500
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SUNDAY
SHOWERS. HIGHS AROUND 70. NORTHEAST WINDS 10 TO 15 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS AND
THUNDERSTORMS. LOWS IN THE MID 50S. NORTHEAST WINDS AROUND
15 MPH.
MONDAY
MOSTLY CLOUDY. SHOWERS LIKELY, MAINLY IN THE MORNING.
HIGHS IN THE MID 60S. NORTHEAST WINDS AROUND 15 MPH.
MONDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE LOWER 50S. NORTHEAST WINDS 10 TO 15 MPH.
TUESDAY
PARTLY SUNNY. HIGHS IN THE LOWER 60S. NORTHEAST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHEAST
WINDS 5 TO 10 MPH.
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTH WINDS
AROUND 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. NORTH
WINDS AROUND 5 MPH.
THURSDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. NORTH WINDS
AROUND 5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. NORTH
WINDS AROUND 5 MPH.
ILZ032-182115-
LIVINGSTON-
INCLUDING THE CITIES OF PONTIAC, DWIGHT, AND FAIRBURY
650 AM CDT FRI SEP 18 2026
TODAY TONIGHT SAT SAT NIGHT
CLOUD COVER PCLDY PCLDY CLOUDY MCLDY
PRECIP TYPE SHOWERS TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 20 50 80 80
MAX TEMP (24HR TREND) 78 (-13) 82
MIN RH % (24HR TREND) 73 (+17) 77
MIN TEMP (24HR TREND) 63 (-4) 65
MAX RH % (24HR TREND) 100 (0) 100
20FT WIND AM (MPH) NE 5-6 SE 6
20FT WIND PM (MPH) E 5-6 E 6 S 6 LGT/VAR
PEAK WIND GUSTS (MPH)
PRECIP AMOUNT (IN) 0.00 0.05-0.10 0.25-0.50 0.50-0.75
11 AM MIXING HGT (FT) 1800 1100
MAX MIXING HGT (FT) 2500 1500
TRANSPORT WND (MPH) E 11 S 12
VENT RATE (MPH-FT) 30000 19500
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SUNDAY
SHOWERS. HIGHS IN THE MID 70S. NORTHEAST WINDS 5 TO
10 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH SHOWERS LIKELY AND A CHANCE OF
THUNDERSTORMS. LOWS IN THE MID 50S. NORTHEAST WINDS AROUND
10 MPH.
MONDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY. HIGHS IN THE UPPER
60S. NORTHEAST WINDS AROUND 10 MPH.
MONDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE LOWER 50S. NORTHEAST WINDS AROUND 10 MPH.
TUESDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 50. NORTHEAST WINDS
AROUND 5 MPH.
WEDNESDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. NORTH WINDS
5 TO 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 50. 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 LOWER 50S. NORTH
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
ILZ023-182115-
KANKAKEE-
INCLUDING THE CITIES OF KANKAKEE, BOURBONNAIS, AND BRADLEY
650 AM CDT FRI SEP 18 2026
TODAY TONIGHT SAT SAT NIGHT
CLOUD COVER PCLDY PCLDY CLOUDY MCLDY
PRECIP TYPE NONE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 10 60 100 80
MAX TEMP (24HR TREND) 76 (-13) 79
MIN RH % (24HR TREND) 69 (+11) 79
MIN TEMP (24HR TREND) 59 (-6) 63
MAX RH % (24HR TREND) 97 (-1) 100
20FT WIND AM (MPH) NE 6 SE 5-6
20FT WIND PM (MPH) E 6 E 5-7 S 5-6 LGT/VAR
PEAK WIND GUSTS (MPH)
PRECIP AMOUNT (IN) 0.00 0.10-0.25 0.25-0.50 0.50-0.75
11 AM MIXING HGT (FT) 2000 1100
MAX MIXING HGT (FT) 2500 1400
TRANSPORT WND (MPH) E 10 S 11
VENT RATE (MPH-FT) 25000 16800
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SUNDAY
SHOWERS. HIGHS IN THE LOWER 70S. NORTHEAST WINDS 5 TO
10 MPH.
SUNDAY NIGHT
CLOUDY WITH A CHANCE OF THUNDERSTORMS. A CHANCE
OF SHOWERS IN THE EVENING, THEN SHOWERS LIKELY AFTER MIDNIGHT.
LOWS IN THE MID 50S. NORTHEAST WINDS AROUND 10 MPH.
MONDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY. HIGHS IN THE MID
60S. NORTHEAST WINDS AROUND 10 MPH.
MONDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE LOWER 50S. NORTHEAST WINDS AROUND 10 MPH.
TUESDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 50. NORTHEAST WINDS
AROUND 5 MPH.
WEDNESDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. NORTH WINDS
AROUND 5 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 50. NORTH WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
THURSDAY
PARTLY SUNNY. HIGHS AROUND 70. NORTH WINDS AROUND
5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. NORTH
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
ILZ039-182115-
FORD-
INCLUDING THE CITIES OF PAXTON AND GIBSON CITY
650 AM CDT FRI SEP 18 2026
TODAY TONIGHT SAT SAT NIGHT
CLOUD COVER PCLDY PCLDY CLOUDY MCLDY
PRECIP TYPE NONE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 10 30 70 70
MAX TEMP (24HR TREND) 79 (-14) 83
MIN RH % (24HR TREND) 70 (+19) 72
MIN TEMP (24HR TREND) 62 (-6) 65
MAX RH % (24HR TREND) 100 (+2) 100
20FT WIND AM (MPH) NE 5-6 SE 6
20FT WIND PM (MPH) E 5-6 E 6 S 6 LGT/VAR
PEAK WIND GUSTS (MPH)
PRECIP AMOUNT (IN) 0.00 0.01-0.05 0.10-0.25 0.50-0.75
11 AM MIXING HGT (FT) 1600 1300
MAX MIXING HGT (FT) 2400 1600
TRANSPORT WND (MPH) E 10 S 11
VENT RATE (MPH-FT) 24000 19200
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SUNDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY. HIGHS IN THE UPPER
70S. NORTHEAST WINDS 5 TO 10 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH SHOWERS LIKELY AND A CHANCE OF
THUNDERSTORMS. LOWS IN THE MID 50S. NORTHEAST WINDS AROUND
10 MPH.
MONDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY. COOLER. HIGHS IN THE
UPPER 60S. NORTHEAST WINDS AROUND 10 MPH.
MONDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE LOWER 50S. NORTHEAST WINDS AROUND 10 MPH.
TUESDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 50. NORTHEAST WINDS
5 TO 10 MPH.
WEDNESDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. NORTH WINDS
5 TO 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 50. 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 LOWER 50S. NORTH
WINDS AROUND 5 MPH.
ILZ033-182115-
IROQUOIS-
INCLUDING THE CITIES OF WATSEKA AND GILMAN
650 AM CDT FRI SEP 18 2026
TODAY TONIGHT SAT SAT NIGHT
CLOUD COVER PCLDY PCLDY CLOUDY MCLDY
PRECIP TYPE NONE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 10 40 80 70
MAX TEMP (24HR TREND) 78 (-13) 82
MIN RH % (24HR TREND) 66 (+15) 71
MIN TEMP (24HR TREND) 60 (-7) 64
MAX RH % (24HR TREND) 96 (-1) 100
20FT WIND AM (MPH) LGT/VAR LGT/VAR
20FT WIND PM (MPH) E 4-5 E 5 S 4-5 LGT/VAR
PEAK WIND GUSTS (MPH)
PRECIP AMOUNT (IN) 0.00 0.01-0.05 0.25-0.50 0.50-0.75
11 AM MIXING HGT (FT) 1700 1300
MAX MIXING HGT (FT) 2600 1400
TRANSPORT WND (MPH) E 11 S 11
VENT RATE (MPH-FT) 31200 16800
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SUNDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY. HIGHS IN THE MID
70S. NORTHEAST WINDS AROUND 5 MPH.
SUNDAY NIGHT
CLOUDY WITH SHOWERS LIKELY AND A CHANCE OF
THUNDERSTORMS. LOWS IN THE MID 50S. NORTHEAST WINDS AROUND
10 MPH.
MONDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY. HIGHS IN THE UPPER
60S. NORTHEAST WINDS AROUND 10 MPH.
MONDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE LOWER 50S. NORTHEAST WINDS 5 TO 10 MPH.
TUESDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 50. NORTHEAST WINDS
AROUND 5 MPH.
WEDNESDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. NORTH WINDS
AROUND 5 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 50. NORTH WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
THURSDAY
PARTLY SUNNY. HIGHS AROUND 70. NORTH WINDS AROUND
5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. LIGHT
WINDS.
INZ010-182115-
NEWTON-
INCLUDING THE CITIES OF ROSELAWN, KENTLAND, AND MOROCCO
650 AM CDT FRI SEP 18 2026
TODAY TONIGHT SAT SAT NIGHT
CLOUD COVER PCLDY PCLDY CLOUDY MCLDY
PRECIP TYPE NONE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 40 90 80
MAX TEMP (24HR TREND) 75 (-13) 78
MIN RH % (24HR TREND) 65 (+12) 77
MIN TEMP (24HR TREND) 58 (-8) 63
MAX RH % (24HR TREND) 93 (-7) 100
20FT WIND AM (MPH) NE 5 LGT/VAR
20FT WIND PM (MPH) E 5 E 5-6 S 4-6 LGT/VAR
PEAK WIND GUSTS (MPH)
PRECIP AMOUNT (IN) 0.00 0.10-0.25 0.25-0.50 0.50-0.75
11 AM MIXING HGT (FT) 1800 1200
MAX MIXING HGT (FT) 2600 1600
TRANSPORT WND (MPH) E 10 S 10
VENT RATE (MPH-FT) 26000 16000
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SUNDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY. HIGHS IN THE MID
70S. NORTHEAST WINDS AROUND 5 MPH.
SUNDAY NIGHT
CLOUDY WITH A CHANCE OF THUNDERSTORMS. A CHANCE
OF SHOWERS IN THE EVENING, THEN SHOWERS LIKELY AFTER MIDNIGHT.
LOWS IN THE MID 50S. NORTHEAST WINDS AROUND 10 MPH.
MONDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY. HIGHS IN THE MID
60S. NORTHEAST WINDS AROUND 10 MPH.
MONDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS
AROUND 50. NORTHEAST WINDS AROUND 10 MPH.
TUESDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHEAST
WINDS AROUND 5 MPH.
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. NORTH WINDS
AROUND 5 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. NORTH
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
THURSDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. NORTH WINDS
AROUND 5 MPH.
THURSDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS AROUND 50. NORTH WINDS AROUND 5 MPH IN THE
EVENING, BECOMING LIGHT.
INZ011-182115-
JASPER-
INCLUDING THE CITIES OF RENSSELAER AND DEMOTTE
650 AM CDT FRI SEP 18 2026
TODAY TONIGHT SAT SAT NIGHT
CLOUD COVER PCLDY PCLDY CLOUDY MCLDY
PRECIP TYPE NONE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 40 90 90
MAX TEMP (24HR TREND) 75 (-12) 77
MIN RH % (24HR TREND) 65 (+8) 79
MIN TEMP (24HR TREND) 58 (-8) 62
MAX RH % (24HR TREND) 92 (-8) 100
20FT WIND AM (MPH) NE 6 SE 5-7
20FT WIND PM (MPH) E 6 E 5-7 S 5-7 LGT/VAR
PEAK WIND GUSTS (MPH)
PRECIP AMOUNT (IN) 0.00 0.05-0.10 0.25-0.50 0.50-0.75
11 AM MIXING HGT (FT) 1900 1200
MAX MIXING HGT (FT) 2700 1600
TRANSPORT WND (MPH) E 10 S 10
VENT RATE (MPH-FT) 27000 16000
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SUNDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY. HIGHS IN THE LOWER
70S. NORTHEAST WINDS 5 TO 10 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF THUNDERSTORMS. A
CHANCE OF SHOWERS IN THE EVENING, THEN SHOWERS LIKELY AFTER
MIDNIGHT. LOWS IN THE LOWER 50S. NORTHEAST WINDS AROUND 10 MPH.
MONDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY. HIGHS IN THE MID
60S. NORTHEAST WINDS AROUND 10 MPH.
MONDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS
AROUND 50. NORTHEAST WINDS AROUND 10 MPH.
TUESDAY
MOSTLY CLOUDY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHEAST
WINDS AROUND 5 MPH.
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. NORTH WINDS
5 TO 10 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. NORTH
WINDS AROUND 5 MPH.
THURSDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. NORTH WINDS
AROUND 5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS AROUND 50. NORTH WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
INZ019-182115-
BENTON-
INCLUDING THE CITIES OF FOWLER AND OXFORD
750 AM EDT FRI SEP 18 2026
TODAY TONIGHT SAT SAT NIGHT
CLOUD COVER PCLDY PCLDY CLOUDY MCLDY
PRECIP TYPE NONE TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 10 30 80 80
MAX TEMP (24HR TREND) 76 (-13) 80
MIN RH % (24HR TREND) 66 (+15) 73
MIN TEMP (24HR TREND) 60 (-8) 65
MAX RH % (24HR TREND) 90 (-9) 100
20FT WIND AM (MPH) NE 5-6 LGT/VAR
20FT WIND PM (MPH) E 5-6 E 5-6 S 4-6 LGT/VAR
PEAK WIND GUSTS (MPH)
PRECIP AMOUNT (IN) 0.00 0.00 0.10-0.25 0.50-0.75
11 AM MIXING HGT (FT) 1500 1400
MAX MIXING HGT (FT) 2400 1500
TRANSPORT WND (MPH) E 11 SE 10
VENT RATE (MPH-FT) 28800 15000
VENT RATE CATEGORY POOR POOR
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
SUNDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY. HIGHS IN THE UPPER
70S. NORTHEAST WINDS AROUND 5 MPH.
SUNDAY NIGHT
MOSTLY CLOUDY WITH SHOWERS LIKELY AND A CHANCE OF
THUNDERSTORMS. LOWS IN THE UPPER 50S. NORTHEAST WINDS AROUND
10 MPH.
MONDAY
MOSTLY CLOUDY WITH SHOWERS LIKELY. COOLER. HIGHS IN THE
UPPER 60S. NORTHEAST WINDS AROUND 10 MPH.
MONDAY NIGHT
MOSTLY CLOUDY WITH A CHANCE OF SHOWERS. LOWS IN
THE LOWER 50S. NORTHEAST WINDS AROUND 10 MPH.
TUESDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. NORTH
WINDS AROUND 5 MPH.
WEDNESDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. NORTH WINDS
AROUND 5 MPH.
WEDNESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE LOWER 50S. NORTH WINDS AROUND 5 MPH IN
THE EVENING, BECOMING LIGHT.
THURSDAY
PARTLY SUNNY. HIGHS AROUND 70. NORTH WINDS AROUND
5 MPH.
THURSDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 50S. NORTH
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
RATZER
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