Fosston, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fosston, a city in Polk County, Minnesota.
Overnight
40°F
Light Rain Likely
Rain likely. Cloudy. Low around 40, with temperatures rising to around 43 overnight. North wind around 14 mph. Chance of precipitation is 60%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast for Fosston
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 40°F | Light Rain Likely | 14 mph N | 57% |
| Wednesday | 47°F | Light Rain Likely | 14 to 17 mph N | 64% |
| Wednesday Night | 31°F | Mostly Cloudy | 13 to 16 mph N | 3% |
| Thursday | 40°F | Mostly Cloudy | 8 to 14 mph N | 0% |
| Thursday Night | 21°F | Partly Cloudy | 5 mph E | 0% |
| Friday | 42°F | Sunny | 3 to 8 mph S | 0% |
| Friday Night | 27°F | Partly Cloudy | 8 mph SSW | 0% |
| Saturday | 49°F | Mostly Sunny | 8 to 14 mph SW | 8% |
| Saturday Night | 32°F | Partly Cloudy | 7 to 10 mph W | 7% |
| Sunday | 50°F | Mostly Sunny | 9 mph WSW | 0% |
| Sunday Night | 35°F | Partly Cloudy | 6 to 9 mph SSW | 0% |
| Monday | 54°F | Mostly Sunny | 9 to 15 mph W | 1% |
| Monday Night | 32°F | Mostly Clear | 5 to 9 mph WNW | 1% |
| Tuesday | 49°F | Mostly Sunny | 5 to 8 mph W | 2% |
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 Nov 4, 2026.