Oslo, MN Weather & Growing Conditions
Tonight
52°F
Mostly Cloudy
Mostly cloudy. Low around 52, with temperatures rising to around 54 overnight. South southeast wind 3 to 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 52°F | Mostly Cloudy | 3 to 8 mph SSE | 3% |
| Saturday | 70°F | Mostly Cloudy | 2 to 14 mph E | 14% |
| Saturday Night | 48°F | Mostly Cloudy | 8 to 14 mph NNE | 0% |
| Sunday | 67°F | Mostly Cloudy | 7 to 10 mph NE | 0% |
| Sunday Night | 44°F | Mostly Cloudy | 3 to 8 mph E | 0% |
| Monday | 68°F | Sunny | 3 to 8 mph SE | 0% |
| Monday Night | 43°F | Mostly Clear | 6 to 9 mph SE | 0% |
| Tuesday | 69°F | Sunny | 9 to 16 mph SSE | 0% |
| Tuesday Night | 47°F | Partly Cloudy | 10 to 14 mph SSE | 3% |
| Wednesday | 70°F | Partly Sunny | 13 to 20 mph SSE | 8% |
| Wednesday Night | 52°F | Partly Cloudy | 14 mph SSE | 12% |
| Thursday | 73°F | Mostly Sunny | 10 to 14 mph S | 12% |
| Thursday Night | 53°F | Mostly Clear | 10 mph SSE | 8% |
| Friday | 74°F | Mostly Sunny | 9 to 15 mph S | 8% |
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 Sep 19, 2026.