Fosston, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fosston, a city in Polk County, Minnesota.
Tonight
49°F
Scattered Rain Showers then Mostly Cloudy
Scattered rain showers between 7pm and 9pm. Mostly cloudy, with a low around 49. Northeast wind around 8 mph. Chance of precipitation is 40%.
7-day forecast for Fosston
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 49°F | Scattered Rain Showers then Mostly Cloudy | 8 mph NE | 37% |
| Sunday | 65°F | Partly Sunny | 9 mph ENE | 0% |
| Sunday Night | 44°F | Mostly Cloudy | 5 to 8 mph E | 0% |
| Monday | 64°F | Mostly Sunny | 6 mph ESE | 0% |
| Monday Night | 39°F | Mostly Clear | 6 mph SE | 0% |
| Tuesday | 65°F | Sunny | 6 to 9 mph SSE | 0% |
| Tuesday Night | 42°F | Clear | 9 mph SSE | 0% |
| Wednesday | 66°F | Sunny | 9 to 15 mph SSE | 0% |
| Wednesday Night | 48°F | Partly Cloudy then Slight Chance Rain Showers | 10 mph SSE | 17% |
| Thursday | 68°F | Chance Rain Showers | 13 mph SSE | 45% |
| Thursday Night | 51°F | Chance Rain Showers then Mostly Cloudy | 9 mph SSE | 34% |
| Friday | 72°F | Partly Sunny | 6 to 10 mph S | 5% |
| Friday Night | 55°F | Partly Cloudy | 12 mph SSE | 11% |
| Saturday | 71°F | Chance Rain Showers | 13 to 17 mph SSE | 27% |
Forecast source: National Weather Service (api.weather.gov) for Fosston (47.585, -95.753). Updated through the day.
Growing snapshot for Fosston
Last spring frost
May 15
First fall frost
Sep 26
Growing season
132 days
Hardiness zone
3b
More local growing data for Fosston: nearby ZIP 56542 weather · frost dates · planting calendar · Minnesota frost dates
Nearby towns & communities
Beltrami
Climax
Crookston
Erskine
Fertile
Fisher
Gully
McIntosh
Mentor
Nielsville
Trail
Warren
Winger
Climate data from the nearest NOAA station, Fosston 1 E, Mn (0.3 mi from Fosston). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.