Osseo, WI Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Osseo, a city in Trempealeau County, Wisconsin.
This Afternoon
65°F
Showers And Thunderstorms Likely
Rain showers before 3pm, then showers and thunderstorms likely. Cloudy. High near 65, with temperatures falling to around 63 in the afternoon. South wind around 8 mph. Chance of precipitation is 90%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Osseo
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 65°F | Showers And Thunderstorms Likely | 8 mph S | 86% |
| Tonight | 55°F | Rain Showers | 7 mph SE | 97% |
| Wednesday | 59°F | Rain Showers | 6 to 9 mph S | 86% |
| Wednesday Night | 44°F | Rain Showers | 5 to 8 mph W | 89% |
| Thursday | 49°F | Rain Showers Likely | 8 to 13 mph N | 63% |
| Thursday Night | 34°F | Mostly Cloudy | 7 to 12 mph N | 7% |
| Friday | 46°F | Partly Sunny | 2 to 8 mph N | 2% |
| Friday Night | 27°F | Partly Cloudy | 1 mph N | 1% |
| Saturday | 50°F | Mostly Sunny | 0 to 5 mph W | 0% |
| Saturday Night | 32°F | Partly Cloudy | 3 mph W | 7% |
| Sunday | 55°F | Mostly Sunny | 3 to 8 mph W | 14% |
| Sunday Night | 33°F | Mostly Clear | 5 mph SW | 3% |
| Monday | 57°F | Mostly Sunny | 5 to 9 mph SW | 0% |
| Monday Night | 36°F | Partly Cloudy | 6 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov) for Osseo (44.580, -91.214). Updated through the day.
Growing snapshot for Osseo
Last spring frost
May 7
First fall frost
Oct 1
Growing season
146 days
Hardiness zone
4b
More local growing data for Osseo: nearby ZIP 54758 weather · frost dates · planting calendar · Wisconsin frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Augusta Rs, Wi (9.5 mi from Osseo). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.