Grant Park, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Grant Park, a village in Kankakee County, Illinois.
Tonight
62°F
Mostly Cloudy then Chance Showers And Thunderstorms
A chance of showers and thunderstorms after 4am. Mostly cloudy, with a low around 62. East southeast wind 5 to 10 mph. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Grant Park
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 62°F | Mostly Cloudy then Chance Showers And Thunderstorms | 5 to 10 mph ESE | 31% |
| Saturday | 80°F | Showers And Thunderstorms Likely | 5 to 10 mph SE | 74% |
| Saturday Night | 66°F | Showers And Thunderstorms Likely | 5 mph SSW | 78% |
| Sunday | 72°F | Showers And Thunderstorms | 5 to 15 mph N | 78% |
| Sunday Night | 54°F | Showers And Thunderstorms Likely | 10 to 15 mph NE | 69% |
| Monday | 66°F | Showers And Thunderstorms Likely | 10 to 15 mph ENE | 61% |
| Monday Night | 50°F | Chance Rain Showers | 10 to 15 mph NE | 38% |
| Tuesday | 65°F | Slight Chance Rain Showers | 10 mph NE | 21% |
| Tuesday Night | 50°F | Slight Chance Rain Showers then Mostly Cloudy | 5 to 10 mph NE | 19% |
| Wednesday | 66°F | Partly Sunny | 5 to 10 mph NNE | 7% |
| Wednesday Night | 51°F | Mostly Cloudy | 5 to 10 mph NNE | 7% |
| Thursday | 69°F | Partly Sunny | 5 to 10 mph NNE | 4% |
| Thursday Night | 52°F | Mostly Cloudy | 0 to 5 mph NNE | 3% |
| Friday | 71°F | Mostly Sunny | 0 to 5 mph NNE | 4% |
Forecast source: National Weather Service (api.weather.gov) for Grant Park (41.243, -87.636). Updated through the day.
Growing snapshot for Grant Park
Last spring frost
Apr 29
First fall frost
Oct 16
Growing season
171 days
Hardiness zone
5b
More local growing data for Grant Park: nearby ZIP 60940 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
Aroma Park
Bonfield
Bourbonnais
Bradley
Buckingham
Chebanse
Essex
Herscher
Hopkins Park
Irwin
Kankakee
Limestone
Manteno
Momence
Reddick
Sammons Point
St. Anne
Sun River Terrace
Union Hill
Climate data from the nearest NOAA station, Lowell, In (11.7 mi from Grant Park). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.