Fosston, MN Weather & Growing Conditions
Tonight
40°F
Chance Light Rain
A chance of rain before midnight, then a chance of rain and patchy fog. Cloudy. Low around 40, with temperatures rising to around 43 overnight. North wind 12 to 15 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 40°F | Chance Light Rain | 12 to 15 mph N | 47% |
| Wednesday | 47°F | Light Rain Likely | 17 mph N | 55% |
| Wednesday Night | 32°F | Mostly Cloudy | 12 to 16 mph N | 0% |
| Thursday | 41°F | Partly Sunny | 7 to 13 mph NNE | 0% |
| Thursday Night | 24°F | Partly Cloudy | 2 to 6 mph E | 0% |
| Friday | 43°F | Mostly Sunny | 2 to 7 mph S | 0% |
| Friday Night | 28°F | Partly Cloudy | 5 to 9 mph SSW | 0% |
| Saturday | 51°F | Mostly Sunny | 9 to 13 mph SW | 8% |
| Saturday Night | 32°F | Slight Chance Light Rain then Partly Cloudy | 6 to 9 mph W | 16% |
| Sunday | 51°F | Mostly Sunny | 6 to 9 mph WSW | 3% |
| Sunday Night | 35°F | Partly Cloudy | 7 to 12 mph SSW | 2% |
| Monday | 53°F | Mostly Sunny | 12 to 17 mph WSW | 1% |
| Monday Night | 33°F | Mostly Clear | 6 to 10 mph W | 0% |
| Tuesday | 49°F | Mostly Sunny | 8 mph W | 0% |
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 Nov 4, 2026.