Fosston, MN Weather & Growing Conditions
Tonight
51°F
Mostly Cloudy
Mostly cloudy. Low around 51, with temperatures rising to around 53 overnight. East southeast wind 5 to 8 mph.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 51°F | Mostly Cloudy | 5 to 8 mph ESE | 2% |
| Saturday | 69°F | Partly Sunny | 3 to 9 mph ENE | 4% |
| Saturday Night | 49°F | Mostly Cloudy | 6 to 9 mph NE | 0% |
| Sunday | 65°F | Partly Sunny | 10 mph ENE | 0% |
| Sunday Night | 43°F | Mostly Cloudy | 5 to 8 mph E | 0% |
| Monday | 65°F | Mostly Sunny | 7 mph ESE | 1% |
| Monday Night | 40°F | Mostly Clear | 7 mph SE | 1% |
| Tuesday | 66°F | Sunny | 7 to 10 mph SSE | 0% |
| Tuesday Night | 43°F | Mostly Clear | 8 mph SSE | 1% |
| Wednesday | 67°F | Mostly Sunny | 9 to 13 mph SSE | 5% |
| Wednesday Night | 49°F | Partly Cloudy | 10 mph SSE | 14% |
| Thursday | 70°F | Partly Sunny | 10 mph S | 14% |
| Thursday Night | 50°F | Partly Cloudy | 7 mph S | 9% |
| Friday | 71°F | Mostly Sunny | 7 to 12 mph S | 7% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Fosston, MN
Last spring frost
May 15
First fall frost
Sep 26
Growing season
132 days
Hardiness zone
3b
Explore more for Fosston, MN: full frost dates · planting calendar · Minnesota frost dates
Climate data from the nearest NOAA station, Fosston 1 E, Mn (0.3 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.