Oslo, MN Weather & Growing Conditions
Today
72°F
Sunny
Sunny. High near 72, with temperatures falling to around 70 in the afternoon. West northwest wind around 15 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 72°F | Sunny | 15 mph WNW | 0% |
| Tonight | 48°F | Mostly Clear | 3 to 12 mph WSW | 1% |
| Wednesday | 81°F | Sunny | 6 to 16 mph SW | 0% |
| Wednesday Night | 56°F | Slight Chance Rain Showers | 7 to 13 mph SW | 21% |
| Thursday | 82°F | Sunny | 7 to 14 mph WSW | 11% |
| Thursday Night | 57°F | Mostly Clear | 6 to 10 mph W | 2% |
| Friday | 80°F | Sunny | 7 to 14 mph NW | 2% |
| Friday Night | 54°F | Mostly Clear | 5 to 12 mph N | 8% |
| Saturday | 79°F | Mostly Sunny | 5 to 13 mph N | 9% |
| Saturday Night | 55°F | Partly Cloudy | 5 to 12 mph NNE | 11% |
| Sunday | 77°F | Mostly Sunny | 5 to 10 mph N | 11% |
| Sunday Night | 56°F | Partly Cloudy then Chance Rain Showers | 5 to 10 mph NNE | 25% |
| Monday | 77°F | Chance Rain Showers then Partly Sunny | 5 to 10 mph N | 25% |
| Monday Night | 55°F | Slight Chance Rain Showers | 5 to 10 mph N | 15% |
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 Aug 4, 2026.