River Falls, WI Weather & Growing Conditions
Tonight
54°F
Patchy Fog
Rain showers and patchy fog before 10pm, then patchy fog and showers and thunderstorms likely. Cloudy. Low around 54, with temperatures rising to around 57 overnight. East wind 10 to 15 mph, with gusts as high as 35 mph. Chance of precipitation is 50%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Patchy Fog | 10 to 15 mph E | 46% |
| Saturday | 64°F | Chance Rain Showers then Cloudy | 10 to 15 mph ENE | 34% |
| Saturday Night | 52°F | Slight Chance Drizzle then Mostly Cloudy | 5 to 10 mph NE | 15% |
| Sunday | 69°F | Partly Sunny | 10 mph NE | 2% |
| Sunday Night | 46°F | Mostly Cloudy | 5 to 10 mph ENE | 2% |
| Monday | 64°F | Mostly Cloudy | 5 to 10 mph E | 7% |
| Monday Night | 42°F | Mostly Cloudy | 5 mph E | 7% |
| Tuesday | 64°F | Mostly Sunny | 5 to 10 mph E | 3% |
| Tuesday Night | 43°F | Partly Cloudy | 0 to 5 mph ESE | 1% |
| Wednesday | 67°F | Sunny | 0 to 5 mph SE | 0% |
| Wednesday Night | 47°F | Partly Cloudy | 0 to 5 mph SE | 8% |
| Thursday | 69°F | Mostly Sunny | 0 to 5 mph SSE | 11% |
| Thursday Night | 50°F | Partly Cloudy | 0 to 5 mph SSE | 10% |
| Friday | 71°F | Mostly Sunny | 0 to 5 mph SE | 5% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for River Falls, WI
Last spring frost
May 11
First fall frost
Oct 1
Growing season
143 days
Hardiness zone
4b
Explore more for River Falls, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, River Falls, Wi (0.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.