Oslo, MN Weather & Growing Conditions
This Afternoon
47°F
Cloudy
Cloudy. High near 47, with temperatures falling to around 43 in the afternoon. North wind around 17 mph, with gusts as high as 28 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 47°F | Cloudy | 17 mph N | 11% |
| Tonight | 35°F | Cloudy | 13 to 16 mph N | 13% |
| Wednesday | 47°F | Mostly Cloudy | 20 mph N | 1% |
| Wednesday Night | 30°F | Mostly Cloudy | 15 to 18 mph N | 0% |
| Thursday | 40°F | Partly Sunny | 6 to 18 mph N | 0% |
| Thursday Night | 23°F | Partly Cloudy | 5 mph ESE | 0% |
| Friday | 45°F | Mostly Sunny | 3 to 13 mph S | 0% |
| Friday Night | 28°F | Partly Cloudy | 10 mph S | 0% |
| Saturday | 54°F | Mostly Sunny | 10 to 14 mph SW | 10% |
| Saturday Night | 33°F | Partly Cloudy | 10 mph W | 8% |
| Sunday | 52°F | Mostly Sunny | 10 mph SW | 1% |
| Sunday Night | 35°F | Mostly Cloudy | 8 to 12 mph S | 0% |
| Monday | 55°F | Mostly Sunny | 13 to 21 mph W | 1% |
| Monday Night | 32°F | Partly Cloudy | 6 to 13 mph W | 0% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Oslo, MN
Last spring frost
May 15
First fall frost
Sep 26
Growing season
134 days
Hardiness zone
4a
Explore more for Oslo, MN: full frost dates · planting calendar · Minnesota frost dates
Climate data from the nearest NOAA station, Argyle, Mn (15 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.