Trempealeau, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Trempealeau, a village in Trempealeau County, Wisconsin.
Today
78°F
Scattered Rain Showers
Scattered rain showers. Mostly cloudy, with a high near 78. West wind 5 to 8 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Trempealeau
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 78°F | Scattered Rain Showers | 5 to 8 mph W | 54% |
| Tonight | 59°F | Scattered Rain Showers | 2 to 6 mph W | 30% |
| 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 5 mph S | 0% |
| Thursday Night | 60°F | Mostly Clear | 5 mph S | 0% |
| Friday | 86°F | Sunny | 2 to 9 mph S | 8% |
| Friday Night | 64°F | Slight Chance Rain Showers | 5 to 9 mph SW | 17% |
| Saturday | 86°F | Slight Chance Rain Showers then Mostly Sunny | 7 mph SW | 17% |
| Saturday Night | 67°F | Slight Chance Showers And Thunderstorms | 7 mph SW | 40% |
| Sunday | 86°F | Chance Showers And Thunderstorms | 5 to 8 mph W | 40% |
| 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 | 2 to 6 mph E | 41% |
| Monday Night | 65°F | Slight Chance Showers And Thunderstorms | 5 mph N | 29% |
Forecast source: National Weather Service (api.weather.gov) for Trempealeau (44.002, -91.428). Updated through the day.
Growing snapshot for Trempealeau
Last spring frost
Apr 29
First fall frost
Oct 11
Growing season
165 days
Hardiness zone
5a
More local growing data for Trempealeau: nearby ZIP 54661 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Trempealeau Dam 6, Wi (4.3 mi from Trempealeau). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.