River Forest, IN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for River Forest, a town in Madison County, Indiana.
Tonight
46°F
Slight Chance Light Rain then Mostly Cloudy
A slight chance of rain before 7pm. Mostly cloudy. Low around 46, with temperatures rising to around 48 overnight. Southwest wind 5 to 10 mph, with gusts as high as 18 mph. Chance of precipitation is 20%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for River Forest
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 46°F | Slight Chance Light Rain then Mostly Cloudy | 5 to 10 mph SW | 17% |
| Thursday | 61°F | Mostly Cloudy | 7 to 14 mph SW | 3% |
| Thursday Night | 42°F | Chance Light Rain | 2 to 7 mph W | 28% |
| Friday | 53°F | Slight Chance Light Rain | 6 to 12 mph NNW | 23% |
| Friday Night | 33°F | Slight Chance Light Rain then Mostly Cloudy | 5 to 9 mph NW | 23% |
| Saturday | 53°F | Mostly Sunny | 3 to 8 mph NW | 0% |
| Saturday Night | 29°F | Partly Cloudy | 0 to 3 mph NW | 0% |
| Sunday | 57°F | Sunny | 0 to 10 mph W | 0% |
| Sunday Night | 31°F | Mostly Clear | 0 to 6 mph W | 0% |
| Monday | 61°F | Sunny | 0 to 7 mph W | 0% |
| Monday Night | 35°F | Clear | 5 mph SW | 0% |
| Tuesday | 63°F | Sunny | 3 to 7 mph W | 1% |
| Tuesday Night | 35°F | Mostly Clear | 0 to 3 mph NW | 2% |
| Veterans Day | 61°F | Mostly Sunny | 0 to 5 mph NNW | 3% |
Forecast source: National Weather Service (api.weather.gov) for River Forest (40.111, -85.729). Updated through the day.
Growing snapshot for River Forest
Last spring frost
Apr 19
First fall frost
Oct 23
Growing season
186 days
Hardiness zone
6a
More local growing data for River Forest: nearby ZIP 46011 weather · frost dates · planting calendar · Indiana frost dates
Nearby towns & communities
Alexandria
Anderson
Chesterfield
Country Club Heights
Edgewood
Elwood
Fishersburg
Frankton
Ingalls
Lapel
Markleville
Orestes
Pendleton
Perkinsville
Summitville
Woodlawn Heights
Climate data from the nearest NOAA station, Anderson Sewage Plt, In (2.7 mi from River Forest). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.