Grant Park, IL Weather Forecast & Alerts

Current conditions, 5-day forecast, and active NWS weather alerts for Grant Park, IL.

Current Conditions — Grant Park, IL

KANKAKEE (KIKK)

Partly Cloudy

52.0 F
Humidity:60%
Wind Speed:W 4.7 mph
Barometer:30.06 in
Dewpoint:38.7 F
Visibility:10.00 mi
Precip:--
Heat Index:NA
Wind Chill:NA
Apr 30 2026, 09:35 AM CDT
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5-Day Forecast — Grant Park, IL

Thursday

High 57 °F
Chance of Rain Showers
Thursday
Night
Low 39 °F
Chance of Rain
Friday

High 51 °F
Mostly Cloudy
Friday
Night
Low 33 °F
Partly Cloudy
Saturday

High 53 °F
Mostly Cloudy
Saturday
Night
Low 37 °F
Mostly Clear
Sunday

High 66 °F
Slight Chance of Showers
Sunday
Night
Low 46 °F
Chance of Rain
Monday

High 69 °F
Isolated T-storm

Detailed Forecast — Grant Park, IL

Thursday
Chance of Rain Showers. High near 57°F. Wind 3 to 10 mph, with gusts as high as 17 mph.
Thursday Night
Chance of Rain. Low around 39°F. Wind 5 to 7 mph, with gusts as high as 12 mph.
Friday
Mostly Cloudy. High near 51°F. Wind 8 to 12 mph, with gusts as high as 16 mph.
Friday Night
Partly Cloudy. Low around 33°F. Wind 2 to 6 mph, with gusts as high as 7 mph.
Saturday
Mostly Cloudy. High near 53°F. Wind 5 to 8 mph, with gusts as high as 14 mph.
Saturday Night
Mostly Clear. Low around 37°F. Wind around 6 mph, with gusts as high as 9 mph.
Sunday
Slight Chance of Showers. High near 66°F. Wind 9 to 16 mph, with gusts as high as 23 mph.
Sunday Night
Chance of Rain. Low around 46°F. Wind around 9 mph, with gusts as high as 15 mph.
Monday
Isolated T-storm. High near 69°F. Wind 9 to 15 mph, with gusts as high as 22 mph.
Monday Night
Partly Cloudy. Low around 44°F. Wind around 6 mph, with gusts as high as 10 mph.
Tuesday
Slight Chance of Showers. High near 68°F. Wind 9 to 15 mph, with gusts as high as 21 mph.
Tuesday Night
Chance of Rain. Low around 48°F. Wind around 9 mph, with gusts as high as 14 mph.
Wednesday
Chance of Thunderstorms. High near 68°F. Wind 12 to 14 mph, with gusts as high as 20 mph.
IL Radar
Current Radar • IL
Day 1 Outlook • April 30, 2026

Observation History — Grant Park, IL

Time Wind
(mph)		 Vis
(mi)		 Weather Precip (in) Temperature (F) Relative
Humidity		 Wind
Chill
(F)		 Heat
Index
(F)		 Pressure
Air Dwpt altimeter
(in)		 sea level
(mb)
09:35 AM CDT W 4.7 10.00 Partly Cloudy -- 52.0 38.7 60% NA NA 30.06 1018.0
09:15 AM CDT W 5.8 10.00 Mostly Cloudy -- 50.5 39.0 65% NA NA 30.07 1018.3
08:55 AM CDT W 5.8 10.00 Partly Cloudy -- 49.3 39.9 70% 46.9 NA 30.07 1018.3
08:35 AM CDT W 5.8 10.00 Partly Cloudy -- 47.5 40.5 76% 44.8 NA 30.07 1018.3
08:15 AM CDT W 4.7 10.00 Partly Cloudy -- 46.0 40.3 80% 43.7 NA 30.06 1018.0
07:55 AM CDT 3.4 10.00 Clear -- 45.1 40.5 84% 43.9 NA 30.06 1018.0
07:35 AM CDT W 3.4 10.00 Clear -- 42.1 39.4 90% 40.3 NA 30.06 1018.0
07:15 AM CDT 10.00 Clear -- NULL % NA NA M
06:55 AM CDT 0.0 7.00 Clear -- 37.0 35.8 95% NA NA 30.05 1017.6
06:35 AM CDT 0.0 5.00 Fog/Mist -- 36.5 35.1 94% NA NA 30.05 1017.6
06:15 AM CDT 0.0 5.00 Fog/Mist -- 35.6 34.2 94% NA NA 30.05 1017.6
05:55 AM CDT SW 3.4 0.50 Fog -- 34.7 33.4 95% 32.0 NA 30.05 1017.6
05:35 AM CDT SW 3.4 0.25 Fog -- 36.3 34.9 94% 33.8 NA 30.05 1017.6
05:15 AM CDT SW 3.4 1.25 Fog/Mist -- 37.0 35.8 95% 34.5 NA 30.05 1017.6
04:35 AM CDT SW 3.4 5.00 Fog/Mist -- 38.1 36.7 94% 35.8 NA 30.05 1017.6
04:15 AM CDT 0.0 5.00 Fog/Mist -- 37.2 36.0 95% NA NA 30.05 1017.6
03:55 AM CDT 0.0 7.00 Clear -- 37.6 36.3 95% NA NA 30.05 1017.6
03:35 AM CDT 0.0 5.00 Fog/Mist -- 36.9 35.6 95% NA NA 30.05 1017.6
03:15 AM CDT 0.0 7.00 Clear -- 37.8 36.5 95% NA NA 30.04 1017.3
02:55 AM CDT 0.0 7.00 Clear -- 38.3 36.9 95% NA NA 30.04 1017.3
02:35 AM CDT 3.4 7.00 Clear -- 36.9 35.6 95% 34.3 NA 30.04 1017.3
02:15 AM CDT 0.0 7.00 Clear -- 37.6 36.3 95% NA NA 30.04 1017.3
01:55 AM CDT 0.0 10.00 Clear -- 39.0 37.6 95% NA NA 30.05 1017.6
01:35 AM CDT 0.0 10.00 Clear -- 38.7 37.4 95% NA NA 30.05 1017.6

Regional Weather Observation

KANKAKEE (KIKK)

Partly Cloudy
52.0 F

CHICAGO/LANSING (KIGQ)

Partly Cloudy
50.4 F

CHICAGO (KMDW)

Partly Cloudy
50.0 F

GARY REGIONAL (KGYY)

Clear
50.0 F

CHICAGO O HARE (KORD)

Partly Cloudy
51.8 F

ROMEOVILLE/CHI (KLOT)

Mostly Clear
48.2 F
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