River Falls, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for River Falls, a city in Pierce County, Wisconsin.
Tonight
54°F
Patchy Fog
Patchy fog and showers and thunderstorms likely. Cloudy. Low around 54, with temperatures rising to around 57 overnight. East southeast wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 40%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for River Falls
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Patchy Fog | 15 mph ESE | 43% |
| Saturday | 64°F | Chance Rain Showers then Cloudy | 10 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 | 65°F | Mostly Sunny | 5 to 10 mph E | 3% |
| Tuesday Night | 42°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 | 12% |
| Thursday Night | 49°F | Partly Cloudy | 0 to 5 mph SSE | 10% |
| Friday | 72°F | Mostly Sunny | 0 to 5 mph SE | 5% |
Forecast source: National Weather Service (api.weather.gov) for River Falls (44.860, -92.625). Updated through the day.
Growing snapshot for River Falls
Last spring frost
May 11
First fall frost
Oct 1
Growing season
143 days
Hardiness zone
4b
More local growing data for River Falls: nearby ZIP 54022 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, River Falls, Wi (0.5 mi from River Falls). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.