429
FNUS53 KLOT 170833
FWFLOT
FIRE WEATHER PLANNING FORECAST FOR NORTHERN IL AND NORTHWEST IN
NATIONAL WEATHER SERVICE CHICAGO/ROMEOVILLE IL
333 AM CDT SUN MAY 17 2026
DISCUSSION
SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED THIS MORNING
MAINLY ACROSS NORTHWEST AND NORTH-CENTRAL ILLINOIS. BY MIDDAY, A
DEVELOPING WARM FRONT WILL LIFT NORTH ACROSS THE AREA, GIVING WAY
TO BREEZY, WARM SUMMERLIKE WEATHER CONDITIONS WITH WIND GUSTS
APPROACHING 30 MPH AT TIMES LATER IN THE AFTERNOON, ESPECIALLY
ACROSS NORTHERN ILLINOIS. THE EXCEPTION WILL BE ALONG THE
IMMEDIATE LAKE MICHIGAN SHORE NORTH OF CHICAGO, WHERE A SOUTHEAST
WIND DIRECTION WILL KEEP GUSTS AND MIXING HEIGHTS LOWER THAN OVER
THE REST OF THE AREA. BREEZY AND MILD CONDITIONS WILL CONTINUE
TONIGHT.
BREEZY SOUTH WINDS WILL MAINTAIN WARM AND INCREASINGLY HUMID
WEATHER ACROSS THE REGION MONDAY INTO TUESDAY, BEFORE A SLOW-
MOVING COLD FRONT PUSHES THROUGH THE AREA. PERIODS OF SHOWERS AND
THUNDERSTORMS ARE EXPECTED FROM LATE TONIGHT THROUGH TUESDAY, WITH
SOME STRONG TO SEVERE STORMS POSSIBLE. COOL, DRY HIGH PRESSURE
WILL THEN SETTLE ACROSS THE GREAT LAKES REGION MID TO LATE WEEK,
WITH DAYTIME TEMPERATURES IN THE 60S TO LOW 70S, BUT COOLER NEAR
LAKE MICHIGAN WITH ONSHORE WINDS.
ILZ014-172130-
COOK-
INCLUDING THE CITIES OF CHICAGO, SCHAUMBURG, EVANSTON, OAK LAWN,
LEMONT, ORLAND PARK, AND PARK FOREST
333 AM CDT SUN MAY 17 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER PCLDY PCLDY MCLDY PCLDY
PRECIP TYPE SHOWERS NONE TSTMS TSTMS
CHANCE PRECIP (%) 20 70 50
MAX TEMP (24HR TREND) 84 (+2) 84
MIN RH % (24HR TREND) 43 (-1) 55
MIN TEMP (24HR TREND) 69 (+5) 66
MAX RH % (24HR TREND) 71 (-18) 93
20FT WIND AM (MPH) SE 15-20 SW 15-20
20FT WIND PM (MPH) S 15-20 S 10-15 SW 15-20 S 10-15
PEAK WIND GUSTS (MPH) 28 26 30 28
PRECIP AMOUNT (IN) 0.01-0.05 0.00 0.25-0.50 0.05-0.10
11 AM MIXING HGT (FT) 2600 2900
MAX MIXING HGT (FT) 5600 4100
TRANSPORT WND (MPH) S 23 SW 25
VENT RATE (MPH-FT) 128800 102500
VENT RATE CATEGORY GOOD GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE MORNING,
THEN SHOWERS LIKELY AND A CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS 15 TO 20 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHWEST
WINDS AROUND 10 MPH.
WEDNESDAY
MOSTLY SUNNY. MUCH COOLER. HIGHS IN THE LOWER 60S.
NORTH WINDS AROUND 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S. NORTHEAST
WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 60S. NORTHEAST WINDS
AROUND 10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHEAST WINDS AROUND
5 MPH.
FRIDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. EAST WINDS 5 TO
10 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. EAST WINDS
AROUND 5 MPH.
SATURDAY
PARTLY SUNNY. HIGHS IN THE LOWER 70S. NORTHEAST WINDS
5 TO 10 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 50S. NORTHEAST
WINDS AROUND 5 MPH.
ILZ006-172130-
LAKE IL-
INCLUDING THE CITIES OF WAUKEGAN, BUFFALO GROVE, MUNDELEIN,
AND GURNEE
333 AM CDT SUN MAY 17 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER MCLDY PCLDY MCLDY PCLDY
PRECIP TYPE TSTMS NONE TSTMS TSTMS
CHANCE PRECIP (%) 50 10 70 60
MAX TEMP (24HR TREND) 82 (-1) 83
MIN RH % (24HR TREND) 48 (+5) 59
MIN TEMP (24HR TREND) 66 (+4) 64
MAX RH % (24HR TREND) 77 (-6) 96
20FT WIND AM (MPH) E 10-15 SW 15-20
20FT WIND PM (MPH) S 10-15 S 10-15 SW 15-20 S 15-20
PEAK WIND GUSTS (MPH) 26 25 29 27
PRECIP AMOUNT (IN) 0.10-0.25 0.00 0.25-0.50 0.05-0.10
11 AM MIXING HGT (FT) 1400 2800
MAX MIXING HGT (FT) 3500 3800
TRANSPORT WND (MPH) S 16 SW 25
VENT RATE (MPH-FT) 56000 95000
VENT RATE CATEGORY POOR GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE MORNING,
THEN SHOWERS LIKELY IN THE AFTERNOON. HIGHS AROUND 80. SOUTHWEST
WINDS 15 TO 20 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHWEST
WINDS AROUND 10 MPH.
WEDNESDAY
MOSTLY SUNNY. COOLER. HIGHS AROUND 60. NORTH WINDS
AROUND 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S.
NORTHEAST WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 50S. NORTHEAST WINDS
AROUND 10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE MID 40S. NORTHEAST WINDS AROUND 5 MPH.
FRIDAY
PARTLY SUNNY. HIGHS IN THE MID 60S. EAST WINDS 5 TO
10 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. EAST WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SATURDAY
PARTLY SUNNY. HIGHS AROUND 70. EAST WINDS 5 TO
10 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 50S. EAST WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
INZ001-172130-
LAKE IN-
INCLUDING THE CITIES OF GARY, HAMMOND, AND MERRILLVILLE
333 AM CDT SUN MAY 17 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER PCLDY MCLEAR PCLDY PCLDY
PRECIP TYPE NONE NONE TSTMS TSTMS
CHANCE PRECIP (%) 10 70 40
MAX TEMP (24HR TREND) 84 (+2) 84
MIN RH % (24HR TREND) 45 (+3) 56
MIN TEMP (24HR TREND) 67 (+5) 65
MAX RH % (24HR TREND) 72 (-26) 96
20FT WIND AM (MPH) S 15-20 S 10-15
20FT WIND PM (MPH) S 15-20 S 10-15 SW 10-15 S 10-15
PEAK WIND GUSTS (MPH) 27 27 30 26
PRECIP AMOUNT (IN) 0.00 0.00 0.25-0.50 0.05-0.10
11 AM MIXING HGT (FT) 2800 3000
MAX MIXING HGT (FT) 5200 4000
TRANSPORT WND (MPH) S 25 SW 27
VENT RATE (MPH-FT) 130000 112000
VENT RATE CATEGORY VERY GOOD GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE MORNING,
THEN SHOWERS LIKELY AND A CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS 15 TO 20 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE
EVENING. LOWS AROUND 50. WEST WINDS AROUND 10 MPH.
WEDNESDAY
MOSTLY SUNNY. MUCH COOLER. HIGHS IN THE UPPER 50S.
NORTH WINDS AROUND 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S. NORTH
WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 60S. NORTHEAST WINDS
AROUND 10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHEAST WINDS AROUND
5 MPH.
FRIDAY
MOSTLY CLOUDY. HIGHS IN THE UPPER 60S. EAST WINDS
AROUND 5 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. EAST WINDS
AROUND 5 MPH.
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 70S. NORTHEAST
WINDS AROUND 5 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 50S. NORTHEAST
WINDS AROUND 5 MPH.
INZ002-172130-
PORTER-
INCLUDING THE CITIES OF PORTAGE, VALPARAISO, AND CHESTERTON
333 AM CDT SUN MAY 17 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER PCLDY MCLEAR PCLDY PCLDY
PRECIP TYPE NONE NONE TSTMS TSTMS
CHANCE PRECIP (%) 10 70 40
MAX TEMP (24HR TREND) 84 (+2) 84
MIN RH % (24HR TREND) 46 (+4) 56
MIN TEMP (24HR TREND) 66 (+4) 65
MAX RH % (24HR TREND) 75 (-20) 95
20FT WIND AM (MPH) S 15-20 S 10-15
20FT WIND PM (MPH) S 15-20 S 10-15 S 10-15 S 10-15
PEAK WIND GUSTS (MPH) 27 26 30 24
PRECIP AMOUNT (IN) 0.00 0.00 0.25-0.50 0.01-0.05
11 AM MIXING HGT (FT) 2800 3100
MAX MIXING HGT (FT) 5200 4000
TRANSPORT WND (MPH) S 23 S 27
VENT RATE (MPH-FT) 119600 112000
VENT RATE CATEGORY GOOD GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE MORNING,
THEN SHOWERS LIKELY AND A CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS 15 TO 20 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE
EVENING. LOWS AROUND 50. NORTHWEST WINDS AROUND 10 MPH.
WEDNESDAY
MOSTLY SUNNY. MUCH COOLER. HIGHS IN THE UPPER 50S.
NORTH WINDS AROUND 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S. NORTH
WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
5 TO 10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHEAST WINDS AROUND
5 MPH.
FRIDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. EAST WINDS AROUND
5 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. EAST WINDS
AROUND 5 MPH.
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE MID 70S. NORTHEAST WINDS
AROUND 5 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 50S. NORTHEAST
WINDS AROUND 5 MPH, BECOMING EAST AFTER MIDNIGHT.
ILZ013-172130-
DUPAGE-
INCLUDING THE CITIES OF NAPERVILLE, WHEATON, DOWNERS GROVE,
LOMBARD, AND CAROL STREAM
333 AM CDT SUN MAY 17 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER PCLDY PCLDY MCLDY PCLDY
PRECIP TYPE SHOWERS NONE TSTMS TSTMS
CHANCE PRECIP (%) 30 10 70 50
MAX TEMP (24HR TREND) 84 (+2) 84
MIN RH % (24HR TREND) 46 (+1) 55
MIN TEMP (24HR TREND) 68 (+3) 66
MAX RH % (24HR TREND) 74 (-16) 96
20FT WIND AM (MPH) S 15-20 SW 15-20
20FT WIND PM (MPH) S 15-20 S 10-15 SW 15-20 S 10-15
PEAK WIND GUSTS (MPH) 27 25 30 27
PRECIP AMOUNT (IN) 0.01-0.05 0.00 0.25-0.50 0.05-0.10
11 AM MIXING HGT (FT) 2500 2800
MAX MIXING HGT (FT) 5500 3900
TRANSPORT WND (MPH) S 25 SW 27
VENT RATE (MPH-FT) 137500 109200
VENT RATE CATEGORY VERY GOOD GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE MORNING,
THEN SHOWERS LIKELY AND A CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS 15 TO 20 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 50. NORTHWEST WINDS
AROUND 10 MPH.
WEDNESDAY
MOSTLY SUNNY. COOLER. HIGHS IN THE LOWER 60S. NORTH
WINDS AROUND 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S. NORTHEAST
WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHEAST WINDS 5 TO
10 MPH.
FRIDAY
PARTLY SUNNY. HIGHS AROUND 70. EAST WINDS 5 TO 10 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. EAST WINDS
AROUND 5 MPH.
SATURDAY
PARTLY SUNNY. HIGHS IN THE MID 70S. EAST WINDS 5 TO
10 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 50S. EAST WINDS
AROUND 5 MPH.
ILZ012-172130-
KANE-
INCLUDING THE CITIES OF AURORA AND ELGIN
333 AM CDT SUN MAY 17 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER MCLDY PCLDY MCLDY PCLDY
PRECIP TYPE TSTMS NONE TSTMS TSTMS
CHANCE PRECIP (%) 30 10 70 60
MAX TEMP (24HR TREND) 83 (0) 82
MIN RH % (24HR TREND) 50 (+5) 62
MIN TEMP (24HR TREND) 66 (+2) 65
MAX RH % (24HR TREND) 80 (-9) 99
20FT WIND AM (MPH) SE 15-20 SW 15-20
20FT WIND PM (MPH) S 15-20 S 10-15 SW 15-20 S 15-20
PEAK WIND GUSTS (MPH) 27 25 30 29
PRECIP AMOUNT (IN) 0.01-0.05 0.00 0.25-0.50 0.10-0.25
11 AM MIXING HGT (FT) 2500 2400
MAX MIXING HGT (FT) 5100 4100
TRANSPORT WND (MPH) S 27 SW 28
VENT RATE (MPH-FT) 142800 118900
VENT RATE CATEGORY VERY GOOD GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
MOSTLY CLOUDY. SHOWERS LIKELY IN THE MORNING, THEN A
CHANCE OF SHOWERS AND THUNDERSTORMS IN THE AFTERNOON. HIGHS
AROUND 80. SOUTH WINDS AROUND 20 MPH, BECOMING WEST IN THE
AFTERNOON.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHWEST
WINDS AROUND 10 MPH.
WEDNESDAY
MOSTLY SUNNY. COOLER. HIGHS IN THE LOWER 60S. NORTH
WINDS AROUND 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S.
NORTHEAST WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE MID 40S. EAST WINDS 5 TO 10 MPH.
FRIDAY
PARTLY SUNNY. HIGHS AROUND 70. EAST WINDS 5 TO 10 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 50. EAST WINDS AROUND
5 MPH.
SATURDAY
PARTLY SUNNY. HIGHS IN THE MID 70S. EAST WINDS 5 TO
10 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 50S. EAST WINDS
AROUND 5 MPH.
ILZ005-172130-
MCHENRY-
INCLUDING THE CITIES OF CRYSTAL LAKE, ALGONQUIN, MCHENRY,
AND WOODSTOCK
333 AM CDT SUN MAY 17 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER MCLDY PCLDY MCLDY PCLDY
PRECIP TYPE TSTMS NONE TSTMS TSTMS
CHANCE PRECIP (%) 50 20 70 70
MAX TEMP (24HR TREND) 81 (-3) 82
MIN RH % (24HR TREND) 57 (+16) 62
MIN TEMP (24HR TREND) 67 (+3) 65
MAX RH % (24HR TREND) 84 (-2) 98
20FT WIND AM (MPH) SE 10-15 SW 15-20
20FT WIND PM (MPH) S 10-15 S 10-15 SW 15-20 S 15-20
PEAK WIND GUSTS (MPH) 27 25 30 28
PRECIP AMOUNT (IN) 0.10-0.25 0.00 0.25-0.50 0.10-0.25
11 AM MIXING HGT (FT) 1900 2400
MAX MIXING HGT (FT) 4400 3800
TRANSPORT WND (MPH) S 23 SW 27
VENT RATE (MPH-FT) 101200 106400
VENT RATE CATEGORY GOOD GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
MOSTLY CLOUDY. SHOWERS LIKELY, MAINLY IN THE MORNING.
HIGHS IN THE UPPER 70S. SOUTHWEST WINDS 15 TO 20 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHWEST
WINDS AROUND 10 MPH.
WEDNESDAY
MOSTLY SUNNY. COOLER. HIGHS IN THE LOWER 60S. NORTH
WINDS AROUND 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S.
NORTHEAST WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 60S. NORTHEAST WINDS
AROUND 10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE MID 40S. EAST WINDS AROUND 5 MPH.
FRIDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. EAST WINDS 5 TO
10 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 50. EAST WINDS AROUND
5 MPH.
SATURDAY
PARTLY SUNNY. HIGHS IN THE MID 70S. EAST WINDS 5 TO
10 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 50S. EAST WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
ILZ004-172130-
BOONE-
INCLUDING THE CITY OF BELVIDERE
333 AM CDT SUN MAY 17 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER MCLDY PCLDY MCLDY PCLDY
PRECIP TYPE TSTMS SHOWERS TSTMS TSTMS
CHANCE PRECIP (%) 50 30 70 80
MAX TEMP (24HR TREND) 82 (0) 82
MIN RH % (24HR TREND) 57 (+14) 64
MIN TEMP (24HR TREND) 67 (+2) 65
MAX RH % (24HR TREND) 85 (0) 97
20FT WIND AM (MPH) SE 10-15 SW 15-20
20FT WIND PM (MPH) S 10-15 S 10-15 SW 15-20 S 15-20
PEAK WIND GUSTS (MPH) 27 23 29 28
PRECIP AMOUNT (IN) 0.10-0.25 0.01-0.05 0.25-0.50 0.10-0.25
11 AM MIXING HGT (FT) 2100 2400
MAX MIXING HGT (FT) 4700 3700
TRANSPORT WND (MPH) S 24 SW 27
VENT RATE (MPH-FT) 112800 103600
VENT RATE CATEGORY GOOD GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
SHOWERS LIKELY IN THE MORNING. PARTLY SUNNY. HIGHS IN
THE UPPER 70S. SOUTHWEST WINDS 15 TO 20 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHWEST
WINDS AROUND 10 MPH.
WEDNESDAY
MOSTLY SUNNY. COOLER. HIGHS IN THE LOWER 60S. NORTH
WINDS AROUND 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S.
NORTHEAST WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE LOWER 60S. EAST WINDS
AROUND 10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE MID 40S. EAST WINDS AROUND 5 MPH.
FRIDAY
PARTLY SUNNY. HIGHS IN THE UPPER 60S. EAST WINDS AROUND
10 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. EAST WINDS
AROUND 5 MPH.
SATURDAY
PARTLY SUNNY. HIGHS IN THE MID 70S. EAST WINDS 5 TO
10 MPH.
SATURDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. EAST WINDS AROUND 5 MPH.
ILZ011-172130-
DE KALB-
INCLUDING THE CITIES OF DEKALB AND SYCAMORE
333 AM CDT SUN MAY 17 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER MCLDY PCLDY MCLDY PCLDY
PRECIP TYPE TSTMS NONE TSTMS TSTMS
CHANCE PRECIP (%) 40 20 70 70
MAX TEMP (24HR TREND) 83 (0) 82
MIN RH % (24HR TREND) 50 (+7) 64
MIN TEMP (24HR TREND) 66 (+2) 64
MAX RH % (24HR TREND) 82 (-7) 99
20FT WIND AM (MPH) SE 15-20 SW 15-20
20FT WIND PM (MPH) S 15-20 S 10-15 SW 15-20 S 15-20
PEAK WIND GUSTS (MPH) 28 26 30 29
PRECIP AMOUNT (IN) 0.01-0.05 0.00 0.25-0.50 0.10-0.25
11 AM MIXING HGT (FT) 2500 2200
MAX MIXING HGT (FT) 5300 3900
TRANSPORT WND (MPH) S 28 SW 27
VENT RATE (MPH-FT) 153700 109200
VENT RATE CATEGORY VERY GOOD GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
BREEZY. PARTLY SUNNY. SHOWERS LIKELY, MAINLY IN THE
MORNING. HIGHS IN THE UPPER 70S. SOUTHWEST WINDS 20 TO 25 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHWEST
WINDS AROUND 10 MPH.
WEDNESDAY
MOSTLY SUNNY. COOLER. HIGHS IN THE LOWER 60S. NORTH
WINDS AROUND 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE LOWER 40S. NORTHEAST WINDS 5 TO
10 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE MID 40S. EAST WINDS 5 TO 10 MPH.
FRIDAY
PARTLY SUNNY. HIGHS AROUND 70. EAST WINDS AROUND
10 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 50. EAST WINDS AROUND
5 MPH.
SATURDAY
PARTLY SUNNY. HIGHS IN THE MID 70S. EAST WINDS 5 TO
10 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 50S. EAST WINDS
AROUND 5 MPH.
ILZ003-172130-
WINNEBAGO-
INCLUDING THE CITY OF ROCKFORD
333 AM CDT SUN MAY 17 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER MCLDY PCLDY MCLDY MCLDY
PRECIP TYPE TSTMS TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 50 40 70 80
MAX TEMP (24HR TREND) 82 (0) 82
MIN RH % (24HR TREND) 57 (+13) 63
MIN TEMP (24HR TREND) 67 (+2) 65
MAX RH % (24HR TREND) 87 (0) 96
20FT WIND AM (MPH) SE 10-15 SW 15-20
20FT WIND PM (MPH) S 10-15 S 10-15 SW 15-20 S 15-20
PEAK WIND GUSTS (MPH) 27 24 28 29
PRECIP AMOUNT (IN) 0.10-0.25 0.05-0.10 0.25-0.50 0.25-0.50
11 AM MIXING HGT (FT) 2200 2700
MAX MIXING HGT (FT) 4800 3500
TRANSPORT WND (MPH) S 25 SW 27
VENT RATE (MPH-FT) 120000 98000
VENT RATE CATEGORY GOOD GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
PARTLY SUNNY. A CHANCE OF SHOWERS IN THE MORNING.
HIGHS IN THE UPPER 70S. SOUTH WINDS AROUND 20 MPH, BECOMING WEST
IN THE AFTERNOON.
TUESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHWEST WINDS AROUND
10 MPH.
WEDNESDAY
MOSTLY SUNNY. COOLER. HIGHS IN THE LOWER 60S.
NORTHWEST WINDS AROUND 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S.
NORTHEAST WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S. EAST WINDS AROUND
10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE MID 40S. EAST WINDS AROUND 5 MPH.
FRIDAY
PARTLY SUNNY. HIGHS AROUND 70. EAST WINDS 5 TO 10 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. EAST WINDS
AROUND 5 MPH.
SATURDAY
PARTLY SUNNY. HIGHS IN THE MID 70S. EAST WINDS 5 TO
10 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 50S. EAST WINDS
AROUND 5 MPH.
ILZ008-172130-
OGLE-
INCLUDING THE CITIES OF ROCHELLE, OREGON, AND BYRON
333 AM CDT SUN MAY 17 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER MCLDY PCLDY MCLDY PCLDY
PRECIP TYPE TSTMS TSTMS TSTMS TSTMS
CHANCE PRECIP (%) 50 40 70 80
MAX TEMP (24HR TREND) 83 (0) 82
MIN RH % (24HR TREND) 54 (+11) 63
MIN TEMP (24HR TREND) 67 (+2) 65
MAX RH % (24HR TREND) 85 (-3) 96
20FT WIND AM (MPH) SE 10-15 SW 15-20
20FT WIND PM (MPH) S 10-15 S 10-15 SW 15-20 S 15-20
PEAK WIND GUSTS (MPH) 28 26 30 29
PRECIP AMOUNT (IN) 0.05-0.10 0.05-0.10 0.25-0.50 0.25-0.50
11 AM MIXING HGT (FT) 2400 2600
MAX MIXING HGT (FT) 4700 3600
TRANSPORT WND (MPH) S 26 SW 25
VENT RATE (MPH-FT) 122200 90000
VENT RATE CATEGORY VERY GOOD GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
A CHANCE OF SHOWERS IN THE MORNING. PARTLY SUNNY.
HIGHS IN THE UPPER 70S. SOUTHWEST WINDS 15 TO 20 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHWEST WINDS AROUND
10 MPH.
WEDNESDAY
MOSTLY SUNNY. COOLER. HIGHS IN THE MID 60S. NORTH
WINDS AROUND 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S.
NORTHEAST WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S. EAST WINDS AROUND
10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE MID 40S. EAST WINDS 5 TO 10 MPH.
FRIDAY
PARTLY SUNNY. HIGHS IN THE LOWER 70S. EAST WINDS 5 TO
10 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 50. EAST WINDS AROUND
5 MPH.
SATURDAY
PARTLY SUNNY. HIGHS IN THE UPPER 70S. EAST WINDS 5 TO
10 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE MID 50S. EAST WINDS AROUND 5 MPH.
ILZ010-172130-
LEE-
INCLUDING THE CITY OF DIXON
333 AM CDT SUN MAY 17 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER MCLDY PCLDY MCLDY PCLDY
PRECIP TYPE TSTMS SHOWERS TSTMS TSTMS
CHANCE PRECIP (%) 40 40 70 70
MAX TEMP (24HR TREND) 84 (0) 82
MIN RH % (24HR TREND) 53 (+11) 64
MIN TEMP (24HR TREND) 67 (+2) 65
MAX RH % (24HR TREND) 84 (-5) 97
20FT WIND AM (MPH) SE 15-20 SW 15-20
20FT WIND PM (MPH) S 15-20 S 10-15 S 15-20 S 15-20
PEAK WIND GUSTS (MPH) 28 27 29 29
PRECIP AMOUNT (IN) 0.01-0.05 0.05-0.10 0.25-0.50 0.10-0.25
11 AM MIXING HGT (FT) 2400 2400
MAX MIXING HGT (FT) 5100 3600
TRANSPORT WND (MPH) S 28 S 25
VENT RATE (MPH-FT) 147900 90000
VENT RATE CATEGORY VERY GOOD GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
MOSTLY CLOUDY. SHOWERS LIKELY, MAINLY IN THE MORNING.
HIGHS IN THE UPPER 70S. SOUTHWEST WINDS 15 TO 20 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHWEST WINDS AROUND
10 MPH.
WEDNESDAY
MOSTLY SUNNY. COOLER. HIGHS IN THE MID 60S. NORTH
WINDS AROUND 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE LOWER 40S.
NORTHEAST WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S. EAST WINDS AROUND
10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE MID 40S. EAST WINDS 5 TO 10 MPH.
FRIDAY
PARTLY SUNNY. HIGHS IN THE LOWER 70S. EAST WINDS AROUND
10 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 50. EAST WINDS AROUND
5 MPH.
SATURDAY
PARTLY SUNNY. HIGHS IN THE UPPER 70S. EAST WINDS 5 TO
10 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE MID 50S. EAST WINDS AROUND 5 MPH.
ILZ019-172130-
LA SALLE-
INCLUDING THE CITIES OF OTTAWA, STREATOR, LA SALLE, MENDOTA,
AND MARSEILLES
333 AM CDT SUN MAY 17 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER PCLDY PCLDY MCLDY PCLDY
PRECIP TYPE SHOWERS NONE TSTMS TSTMS
CHANCE PRECIP (%) 20 20 70 70
MAX TEMP (24HR TREND) 86 (+4) 83
MIN RH % (24HR TREND) 46 (-5) 61
MIN TEMP (24HR TREND) 68 (+4) 66
MAX RH % (24HR TREND) 76 (-16) 94
20FT WIND AM (MPH) S 15-20 SW 10-15
20FT WIND PM (MPH) S 15-20 S 10-15 SW 10-15 S 15-20
PEAK WIND GUSTS (MPH) 29 27 32 28
PRECIP AMOUNT (IN) 0.01-0.05 0.00 0.25-0.50 0.10-0.25
11 AM MIXING HGT (FT) 2500 2500
MAX MIXING HGT (FT) 5400 3800
TRANSPORT WND (MPH) S 29 SW 27
VENT RATE (MPH-FT) 162000 106400
VENT RATE CATEGORY VERY GOOD GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE MORNING,
THEN SHOWERS LIKELY AND A CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS 15 TO 20 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 50. NORTHWEST WINDS
AROUND 10 MPH.
WEDNESDAY
MOSTLY SUNNY. COOLER. HIGHS IN THE MID 60S. NORTH
WINDS AROUND 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE MID 40S. NORTHEAST WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST WINDS
AROUND 10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. EAST WINDS 5 TO 10 MPH.
FRIDAY
PARTLY SUNNY. HIGHS IN THE LOWER 70S. EAST WINDS AROUND
5 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. EAST WINDS
AROUND 5 MPH.
SATURDAY
PARTLY SUNNY. HIGHS IN THE UPPER 70S. EAST WINDS
AROUND 5 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 50S. EAST
WINDS AROUND 5 MPH.
ILZ020-172130-
KENDALL-
INCLUDING THE CITIES OF OSWEGO, YORKVILLE, AND PLANO
333 AM CDT SUN MAY 17 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER PCLDY PCLDY MCLDY PCLDY
PRECIP TYPE SHOWERS NONE TSTMS TSTMS
CHANCE PRECIP (%) 20 10 70 60
MAX TEMP (24HR TREND) 85 (+2) 83
MIN RH % (24HR TREND) 47 (-1) 60
MIN TEMP (24HR TREND) 67 (+3) 66
MAX RH % (24HR TREND) 77 (-16) 95
20FT WIND AM (MPH) S 15-20 SW 15-20
20FT WIND PM (MPH) S 15-20 S 10-15 SW 15-20 S 10-15
PEAK WIND GUSTS (MPH) 28 26 29 26
PRECIP AMOUNT (IN) 0.01-0.05 0.00 0.25-0.50 0.10-0.25
11 AM MIXING HGT (FT) 2500 2500
MAX MIXING HGT (FT) 5500 4000
TRANSPORT WND (MPH) S 28 SW 27
VENT RATE (MPH-FT) 159500 112000
VENT RATE CATEGORY VERY GOOD GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE MORNING,
THEN SHOWERS LIKELY AND A CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS 15 TO 20 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 50. NORTHWEST WINDS
AROUND 10 MPH.
WEDNESDAY
MOSTLY SUNNY. COOLER. HIGHS IN THE MID 60S. NORTH
WINDS AROUND 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S. NORTHEAST
WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. EAST WINDS 5 TO 10 MPH.
FRIDAY
PARTLY SUNNY. HIGHS IN THE LOWER 70S. EAST WINDS 5 TO
10 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. EAST WINDS
AROUND 5 MPH.
SATURDAY
PARTLY SUNNY. HIGHS IN THE MID 70S. EAST WINDS 5 TO
10 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 50S. EAST WINDS
AROUND 5 MPH.
ILZ021-172130-
GRUNDY-
INCLUDING THE CITIES OF MORRIS, COAL CITY, AND MINOOKA
333 AM CDT SUN MAY 17 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER PCLDY MCLEAR MCLDY PCLDY
PRECIP TYPE NONE NONE TSTMS TSTMS
CHANCE PRECIP (%) 10 10 70 60
MAX TEMP (24HR TREND) 86 (+5) 84
MIN RH % (24HR TREND) 45 (-8) 60
MIN TEMP (24HR TREND) 69 (+6) 67
MAX RH % (24HR TREND) 73 (-22) 93
20FT WIND AM (MPH) S 15-20 SW 10-15
20FT WIND PM (MPH) S 15-20 S 10-15 SW 10-15 S 10-15
PEAK WIND GUSTS (MPH) 28 26 28 27
PRECIP AMOUNT (IN) 0.00 0.00 0.25-0.50 0.05-0.10
11 AM MIXING HGT (FT) 2500 2500
MAX MIXING HGT (FT) 5500 4200
TRANSPORT WND (MPH) S 28 SW 28
VENT RATE (MPH-FT) 159500 121800
VENT RATE CATEGORY VERY GOOD GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE MORNING,
THEN SHOWERS LIKELY AND A CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS 15 TO 20 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. NORTHWEST
WINDS AROUND 10 MPH.
WEDNESDAY
MOSTLY SUNNY. COOLER. HIGHS IN THE MID 60S. NORTH
WINDS AROUND 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE MID 40S. NORTHEAST WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST WINDS
5 TO 10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. EAST WINDS AROUND 5 MPH.
FRIDAY
PARTLY SUNNY. HIGHS IN THE LOWER 70S. EAST WINDS AROUND
5 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. EAST WINDS
AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
SATURDAY
PARTLY SUNNY. HIGHS IN THE UPPER 70S. EAST WINDS
AROUND 5 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 50S. EAST
WINDS AROUND 5 MPH IN THE EVENING, BECOMING LIGHT.
ILZ022-172130-
WILL-
INCLUDING THE CITIES OF JOLIET, BOLINGBROOK, AND WILMINGTON
333 AM CDT SUN MAY 17 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER PCLDY MCLEAR MCLDY PCLDY
PRECIP TYPE NONE NONE TSTMS TSTMS
CHANCE PRECIP (%) 10 10 70 50
MAX TEMP (24HR TREND) 85 (+4) 84
MIN RH % (24HR TREND) 47 (-2) 58
MIN TEMP (24HR TREND) 68 (+5) 66
MAX RH % (24HR TREND) 73 (-23) 96
20FT WIND AM (MPH) S 15-20 SW 15-20
20FT WIND PM (MPH) S 15-20 S 10-15 SW 15-20 S 10-15
PEAK WIND GUSTS (MPH) 27 25 32 27
PRECIP AMOUNT (IN) 0.00 0.00 0.25-0.50 0.05-0.10
11 AM MIXING HGT (FT) 2600 2700
MAX MIXING HGT (FT) 5400 4100
TRANSPORT WND (MPH) S 26 SW 26
VENT RATE (MPH-FT) 140400 106600
VENT RATE CATEGORY VERY GOOD GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE MORNING,
THEN SHOWERS LIKELY AND A CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS 15 TO 20 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. LOWS AROUND 50. WEST WINDS AROUND
10 MPH.
WEDNESDAY
MOSTLY SUNNY. COOLER. HIGHS IN THE MID 60S. NORTH
WINDS AROUND 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY. LOWS IN THE MID 40S. NORTHEAST
WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHEAST WINDS 5 TO
10 MPH.
FRIDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 70S. EAST WINDS 5 TO
10 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. EAST WINDS
AROUND 5 MPH.
SATURDAY
PARTLY SUNNY. HIGHS IN THE MID 70S. EAST WINDS 5 TO
10 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 50S. EAST WINDS
AROUND 5 MPH.
ILZ032-172130-
LIVINGSTON-
INCLUDING THE CITIES OF PONTIAC, DWIGHT, AND FAIRBURY
333 AM CDT SUN MAY 17 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER PCLDY MCLEAR MCLDY PCLDY
PRECIP TYPE NONE NONE TSTMS TSTMS
CHANCE PRECIP (%) 10 10 70 60
MAX TEMP (24HR TREND) 86 (+6) 84
MIN RH % (24HR TREND) 45 (-12) 59
MIN TEMP (24HR TREND) 68 (+5) 67
MAX RH % (24HR TREND) 74 (-22) 92
20FT WIND AM (MPH) S 15-20 SW 15-20
20FT WIND PM (MPH) S 15-20 S 10-15 S 15-20 S 15-20
PEAK WIND GUSTS (MPH) 30 28 31 28
PRECIP AMOUNT (IN) 0.00 0.00 0.50-0.75 0.05-0.10
11 AM MIXING HGT (FT) 3100 3100
MAX MIXING HGT (FT) 5300 4100
TRANSPORT WND (MPH) S 27 SW 28
VENT RATE (MPH-FT) 148400 118900
VENT RATE CATEGORY VERY GOOD GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE MORNING,
THEN SHOWERS LIKELY AND A CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS 15 TO 20 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE
EVENING. LOWS IN THE LOWER 50S. NORTHWEST WINDS AROUND 10 MPH.
WEDNESDAY
MOSTLY SUNNY. COOLER. HIGHS IN THE MID 60S. NORTH
WINDS AROUND 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE MID 40S. NORTHEAST WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST WINDS
AROUND 10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHEAST WINDS 5 TO
10 MPH.
FRIDAY
MOSTLY CLOUDY. HIGHS IN THE MID 70S. EAST WINDS AROUND
5 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. EAST WINDS
AROUND 5 MPH.
SATURDAY
PARTLY SUNNY. HIGHS IN THE UPPER 70S. EAST WINDS 5 TO
10 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY IN THE EVENING, THEN BECOMING
PARTLY CLOUDY. LOWS IN THE UPPER 50S. EAST WINDS AROUND 5 MPH.
ILZ023-172130-
KANKAKEE-
INCLUDING THE CITIES OF KANKAKEE, BOURBONNAIS, AND BRADLEY
333 AM CDT SUN MAY 17 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER PCLDY MCLEAR PCLDY PCLDY
PRECIP TYPE NONE NONE TSTMS TSTMS
CHANCE PRECIP (%) 10 70 40
MAX TEMP (24HR TREND) 86 (+4) 84
MIN RH % (24HR TREND) 45 (-1) 57
MIN TEMP (24HR TREND) 67 (+4) 66
MAX RH % (24HR TREND) 73 (-23) 94
20FT WIND AM (MPH) S 15-20 SW 10-15
20FT WIND PM (MPH) S 15-20 S 10-15 SW 10-15 S 10-15
PEAK WIND GUSTS (MPH) 28 26 31 26
PRECIP AMOUNT (IN) 0.00 0.00 0.25-0.50 0.05-0.10
11 AM MIXING HGT (FT) 2800 3200
MAX MIXING HGT (FT) 5300 4200
TRANSPORT WND (MPH) S 26 SW 26
VENT RATE (MPH-FT) 137800 109200
VENT RATE CATEGORY VERY GOOD GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE MORNING,
THEN SHOWERS LIKELY AND A CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS 15 TO 20 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE
EVENING. LOWS IN THE LOWER 50S. WEST WINDS AROUND 10 MPH.
WEDNESDAY
MOSTLY SUNNY. COOLER. HIGHS IN THE MID 60S. NORTH
WINDS AROUND 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE MID 40S. NORTHEAST WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST WINDS
AROUND 10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHEAST WINDS AROUND
5 MPH.
FRIDAY
PARTLY SUNNY. HIGHS IN THE LOWER 70S. EAST WINDS AROUND
5 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. EAST WINDS
AROUND 5 MPH.
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE UPPER 70S. EAST WINDS
AROUND 5 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 50S. NORTHEAST
WINDS AROUND 5 MPH, BECOMING EAST AFTER MIDNIGHT.
ILZ039-172130-
FORD-
INCLUDING THE CITIES OF PAXTON AND GIBSON CITY
333 AM CDT SUN MAY 17 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER PCLDY MCLEAR PCLDY PCLDY
PRECIP TYPE NONE NONE TSTMS TSTMS
CHANCE PRECIP (%) 70 50
MAX TEMP (24HR TREND) 85 (+7) 84
MIN RH % (24HR TREND) 45 (-12) 58
MIN TEMP (24HR TREND) 68 (+5) 67
MAX RH % (24HR TREND) 73 (-23) 92
20FT WIND AM (MPH) S 15-20 S 15-20
20FT WIND PM (MPH) S 15-20 S 10-15 S 15-20 S 10-15
PEAK WIND GUSTS (MPH) 30 27 31 28
PRECIP AMOUNT (IN) 0.00 0.00 0.25-0.50 0.01-0.05
11 AM MIXING HGT (FT) 3300 3100
MAX MIXING HGT (FT) 5300 4200
TRANSPORT WND (MPH) S 26 SW 26
VENT RATE (MPH-FT) 137800 109200
VENT RATE CATEGORY VERY GOOD GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
A CHANCE OF SHOWERS IN THE MORNING, THEN SHOWERS AND A
CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE LOWER 80S.
SOUTHWEST WINDS 15 TO 20 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE
EVENING. LOWS IN THE LOWER 50S. WEST WINDS AROUND 10 MPH,
BECOMING NORTHWEST AFTER MIDNIGHT.
WEDNESDAY
MOSTLY SUNNY. COOLER. HIGHS IN THE MID 60S. NORTH
WINDS AROUND 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE MID 40S. NORTHEAST WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST WINDS
AROUND 10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHEAST WINDS 5 TO
10 MPH.
FRIDAY
MOSTLY CLOUDY. HIGHS IN THE LOWER 70S. EAST WINDS
AROUND 5 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. EAST WINDS
AROUND 5 MPH.
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE UPPER 70S. EAST WINDS
5 TO 10 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 50S. EAST
WINDS AROUND 5 MPH, BECOMING SOUTHEAST AFTER MIDNIGHT.
ILZ033-172130-
IROQUOIS-
INCLUDING THE CITIES OF WATSEKA AND GILMAN
333 AM CDT SUN MAY 17 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER PCLDY MCLEAR PCLDY PCLDY
PRECIP TYPE NONE NONE TSTMS TSTMS
CHANCE PRECIP (%) 10 70 40
MAX TEMP (24HR TREND) 86 (+6) 84
MIN RH % (24HR TREND) 44 (-15) 54
MIN TEMP (24HR TREND) 66 (+3) 67
MAX RH % (24HR TREND) 73 (-23) 90
20FT WIND AM (MPH) S 15-20 S 10-15
20FT WIND PM (MPH) S 15-20 S 10-15 SW 10-15 S 10-15
PEAK WIND GUSTS (MPH) 29 26 32 26
PRECIP AMOUNT (IN) 0.00 0.00 0.25-0.50 0.01-0.05
11 AM MIXING HGT (FT) 3100 3200
MAX MIXING HGT (FT) 5200 4100
TRANSPORT WND (MPH) S 25 SW 27
VENT RATE (MPH-FT) 130000 114800
VENT RATE CATEGORY VERY GOOD GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
A CHANCE OF SHOWERS IN THE MORNING, THEN SHOWERS AND A
CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE LOWER 80S.
SOUTHWEST WINDS 15 TO 20 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE
EVENING. LOWS IN THE LOWER 50S. WEST WINDS AROUND 10 MPH.
WEDNESDAY
MOSTLY SUNNY. COOLER. HIGHS IN THE MID 60S. NORTH
WINDS AROUND 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE MID 40S. NORTHEAST WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST WINDS
AROUND 10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHEAST WINDS AROUND
5 MPH.
FRIDAY
PARTLY SUNNY. HIGHS IN THE LOWER 70S. EAST WINDS AROUND
5 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. EAST WINDS
AROUND 5 MPH.
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE UPPER 70S. NORTHEAST
WINDS AROUND 5 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 50S. NORTHEAST
WINDS AROUND 5 MPH, BECOMING EAST AFTER MIDNIGHT.
INZ010-172130-
NEWTON-
INCLUDING THE CITIES OF ROSELAWN, KENTLAND, AND MOROCCO
333 AM CDT SUN MAY 17 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER PCLDY MCLEAR PCLDY PCLDY
PRECIP TYPE NONE NONE TSTMS TSTMS
CHANCE PRECIP (%) 10 70 40
MAX TEMP (24HR TREND) 85 (+4) 84
MIN RH % (24HR TREND) 47 (-2) 55
MIN TEMP (24HR TREND) 66 (+4) 66
MAX RH % (24HR TREND) 74 (-24) 93
20FT WIND AM (MPH) S 15-20 S 10-15
20FT WIND PM (MPH) S 15-20 S 11-12 SW 10-15 S 10-15
PEAK WIND GUSTS (MPH) 28 24 31 24
PRECIP AMOUNT (IN) 0.00 0.00 0.25-0.50 0.01-0.05
11 AM MIXING HGT (FT) 2800 3200
MAX MIXING HGT (FT) 5000 4200
TRANSPORT WND (MPH) S 24 SW 27
VENT RATE (MPH-FT) 120000 117600
VENT RATE CATEGORY VERY GOOD GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
A CHANCE OF SHOWERS IN THE MORNING, THEN SHOWERS AND A
CHANCE OF THUNDERSTORMS IN THE AFTERNOON. HIGHS IN THE LOWER 80S.
SOUTHWEST WINDS 15 TO 20 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. A CHANCE OF SHOWERS IN THE
EVENING. LOWS IN THE LOWER 50S. WEST WINDS AROUND 10 MPH.
WEDNESDAY
MOSTLY SUNNY. COOLER. HIGHS IN THE LOWER 60S. NORTH
WINDS AROUND 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE MID 40S. NORTHEAST WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST WINDS
AROUND 10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. EAST WINDS AROUND 5 MPH.
FRIDAY
PARTLY SUNNY. HIGHS IN THE LOWER 70S. EAST WINDS AROUND
5 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. EAST WINDS
AROUND 5 MPH.
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE MID 70S. EAST WINDS
AROUND 5 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 50S. NORTHEAST
WINDS AROUND 5 MPH, BECOMING EAST AFTER MIDNIGHT.
INZ011-172130-
JASPER-
INCLUDING THE CITIES OF RENSSELAER AND DEMOTTE
333 AM CDT SUN MAY 17 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER PCLDY MCLEAR PCLDY PCLDY
PRECIP TYPE NONE NONE TSTMS TSTMS
CHANCE PRECIP (%) 10 70 40
MAX TEMP (24HR TREND) 84 (+2) 84
MIN RH % (24HR TREND) 48 (0) 57
MIN TEMP (24HR TREND) 66 (+4) 66
MAX RH % (24HR TREND) 76 (-23) 93
20FT WIND AM (MPH) S 15-20 S 10-15
20FT WIND PM (MPH) S 15-20 S 11-12 SW 10-15 S 10-15
PEAK WIND GUSTS (MPH) 28 25 31 24
PRECIP AMOUNT (IN) 0.00 0.00 0.25-0.50 0.05-0.10
11 AM MIXING HGT (FT) 2900 3200
MAX MIXING HGT (FT) 5100 4100
TRANSPORT WND (MPH) S 23 S 27
VENT RATE (MPH-FT) 117300 114800
VENT RATE CATEGORY VERY GOOD GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
SHOWERS AND A CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS 15 TO 20 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. SHOWERS LIKELY IN THE EVENING.
LOWS IN THE LOWER 50S. WEST WINDS AROUND 10 MPH.
WEDNESDAY
MOSTLY SUNNY. COOLER. HIGHS IN THE LOWER 60S. NORTH
WINDS AROUND 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE MID 40S. NORTH WINDS AROUND 5 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE MID 60S. NORTHEAST WINDS
AROUND 10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. NORTHEAST WINDS AROUND
5 MPH.
FRIDAY
PARTLY SUNNY. HIGHS IN THE LOWER 70S. EAST WINDS AROUND
5 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE LOWER 50S. EAST WINDS
AROUND 5 MPH.
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE MID 70S. NORTHEAST WINDS
AROUND 5 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 50S. EAST
WINDS AROUND 5 MPH.
INZ019-172130-
BENTON-
INCLUDING THE CITIES OF FOWLER AND OXFORD
433 AM EDT SUN MAY 17 2026
TODAY TONIGHT MON MON NIGHT
CLOUD COVER PCLDY MCLEAR PCLDY PCLDY
PRECIP TYPE NONE NONE TSTMS TSTMS
CHANCE PRECIP (%) 10 70 40
MAX TEMP (24HR TREND) 84 (+7) 84
MIN RH % (24HR TREND) 49 (-16) 56
MIN TEMP (24HR TREND) 65 (+3) 67
MAX RH % (24HR TREND) 77 (-20) 89
20FT WIND AM (MPH) S 15-20 S 10-15
20FT WIND PM (MPH) S 15-20 S 11-12 S 10-15 S 10-15
PEAK WIND GUSTS (MPH) 28 24 32 24
PRECIP AMOUNT (IN) 0.00 0.00 0.25-0.50 0.01-0.05
11 AM MIXING HGT (FT) 2800 3000
MAX MIXING HGT (FT) 4900 3700
TRANSPORT WND (MPH) S 23 S 26
VENT RATE (MPH-FT) 112700 96200
VENT RATE CATEGORY GOOD GOOD
FORECAST FOR DAYS 3 THROUGH 7
(WINDS ARE 20 FT LEVEL)
TUESDAY
SHOWERS AND A CHANCE OF THUNDERSTORMS IN THE
AFTERNOON. HIGHS IN THE LOWER 80S. SOUTHWEST WINDS 15 TO 20 MPH.
TUESDAY NIGHT
MOSTLY CLOUDY. SHOWERS LIKELY AND A CHANCE OF
THUNDERSTORMS IN THE EVENING, THEN A CHANCE OF SHOWERS AFTER
MIDNIGHT. LOWS IN THE MID 50S. WEST WINDS AROUND 10 MPH.
WEDNESDAY
PARTLY SUNNY. COOLER. HIGHS IN THE MID 60S. NORTH
WINDS AROUND 10 MPH.
WEDNESDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE MID 40S. NORTHEAST WINDS 5 TO 10 MPH.
THURSDAY
MOSTLY SUNNY. HIGHS IN THE UPPER 60S. NORTHEAST WINDS
AROUND 10 MPH.
THURSDAY NIGHT
PARTLY CLOUDY IN THE EVENING, THEN BECOMING
MOSTLY CLOUDY. LOWS IN THE UPPER 40S. EAST WINDS AROUND 5 MPH.
FRIDAY
PARTLY SUNNY. HIGHS IN THE LOWER 70S. EAST WINDS AROUND
5 MPH.
FRIDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE MID 50S. EAST WINDS
AROUND 5 MPH.
SATURDAY
MOSTLY CLOUDY. HIGHS IN THE MID 70S. NORTHEAST WINDS
AROUND 5 MPH.
SATURDAY NIGHT
MOSTLY CLOUDY. LOWS IN THE UPPER 50S. NORTHEAST
WINDS AROUND 5 MPH, BECOMING SOUTHEAST AFTER MIDNIGHT.
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