River Forest, IL Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for River Forest, a village in Cook County, Illinois.
Today
85°F
Mostly Sunny
Mostly sunny, with a high near 85. South southwest wind 5 to 10 mph.
7-day forecast for River Forest
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 85°F | Mostly Sunny | 5 to 10 mph SSW | 1% |
| Tonight | 70°F | Mostly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph SSW | 21% |
| Wednesday | 81°F | Showers And Thunderstorms Likely then Slight Chance Showers And Thunderstorms | 5 mph WSW | 68% |
| Wednesday Night | 66°F | Showers And Thunderstorms | 5 mph W | 90% |
| Thursday | 78°F | Rain Showers Likely | 0 to 5 mph NNE | 72% |
| Thursday Night | 64°F | Chance Showers And Thunderstorms then Partly Cloudy | 0 to 5 mph SE | 29% |
| Friday | 82°F | Mostly Sunny | 0 to 5 mph S | 4% |
| Friday Night | 66°F | Mostly Clear | 0 to 5 mph S | 8% |
| Saturday | 85°F | Mostly Sunny | 5 to 10 mph SW | 9% |
| Saturday Night | 71°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 to 10 mph SSW | 19% |
| Sunday | 87°F | Slight Chance Showers And Thunderstorms | 5 to 15 mph SW | 19% |
| Sunday Night | 72°F | Slight Chance Showers And Thunderstorms then Chance Showers And Thunderstorms | 5 to 10 mph SW | 44% |
| Monday | 86°F | Chance Showers And Thunderstorms | 5 to 10 mph SSW | 44% |
| Monday Night | 71°F | Chance Showers And Thunderstorms | 5 to 10 mph WSW | 47% |
Forecast source: National Weather Service (api.weather.gov) for River Forest (41.895, -87.819). Updated through the day.
Growing snapshot for River Forest
Last spring frost
Apr 11
First fall frost
Oct 31
Growing season
201 days
Hardiness zone
6a
More local growing data for River Forest: nearby ZIP 60305 weather · frost dates · planting calendar · Illinois frost dates
Nearby towns & communities
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Calumet City
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Chicago
Chicago Heights
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Country Club Hills
Countryside
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East Hazel Crest
Elk Grove Village
Climate data from the nearest NOAA station, Chicago Midway Ap, Il (8.3 mi from River Forest). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.