Trempealeau, WI Weather & Growing Conditions
Today
78°F
Mostly Cloudy then Isolated Rain Showers
Isolated rain showers after 4pm. Mostly cloudy, with a high near 78. West wind around 8 mph. Chance of precipitation is 20%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 78°F | Mostly Cloudy then Isolated Rain Showers | 8 mph W | 22% |
| Tonight | 58°F | Scattered Rain Showers | 2 to 6 mph W | 27% |
| Wednesday | 78°F | Mostly Sunny | 3 mph NW | 1% |
| Wednesday Night | 55°F | Mostly Clear | 0 to 3 mph SW | 0% |
| Thursday | 83°F | Sunny | 0 to 6 mph S | 0% |
| Thursday Night | 60°F | Mostly Clear | 5 mph S | 1% |
| Friday | 86°F | Sunny | 2 to 10 mph S | 8% |
| Friday Night | 64°F | Slight Chance Rain Showers | 5 to 9 mph SW | 18% |
| Saturday | 86°F | Slight Chance Rain Showers then Mostly Sunny | 3 to 7 mph SW | 18% |
| Saturday Night | 68°F | Slight Chance Showers And Thunderstorms | 7 mph SW | 41% |
| Sunday | 86°F | Chance Showers And Thunderstorms | 5 to 8 mph W | 41% |
| Sunday Night | 65°F | Chance Showers And Thunderstorms | 2 to 6 mph SE | 41% |
| Monday | 84°F | Chance Rain Showers then Slight Chance Showers And Thunderstorms | 6 mph E | 41% |
| Monday Night | 65°F | Slight Chance Showers And Thunderstorms | 5 mph N | 28% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Trempealeau, WI
Last spring frost
Apr 29
First fall frost
Oct 11
Growing season
165 days
Hardiness zone
5a
Explore more for Trempealeau, WI: full frost dates · planting calendar · Wisconsin frost dates
Climate data from the nearest NOAA station, Trempealeau Dam 6, Wi (4.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.