Fairmont, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fairmont, a city in Martin County, Minnesota.
This Afternoon
47°F
Light Rain
Rain. Cloudy, with a high near 47. West wind around 15 mph. Chance of precipitation is 80%.
7-day forecast for Fairmont
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 47°F | Light Rain | 15 mph W | 77% |
| Tonight | 38°F | Light Rain | 15 mph NW | 84% |
| Thursday | 44°F | Cloudy | 15 mph NNW | 12% |
| Thursday Night | 30°F | Mostly Cloudy | 5 to 10 mph N | 0% |
| Friday | 44°F | Patchy Fog then Mostly Sunny | 0 to 5 mph NNE | 0% |
| Friday Night | 27°F | Partly Cloudy then Patchy Fog | 0 to 5 mph SSE | 0% |
| Saturday | 50°F | Mostly Sunny | 5 to 10 mph SSW | 0% |
| Saturday Night | 33°F | Mostly Clear | 5 mph WSW | 0% |
| Sunday | 56°F | Sunny | 5 mph WSW | 0% |
| Sunday Night | 36°F | Clear | 5 to 10 mph SW | 0% |
| Monday | 63°F | Sunny | 5 to 10 mph WSW | 0% |
| Monday Night | 36°F | Mostly Clear | 5 mph WNW | 0% |
| Tuesday | 56°F | Mostly Sunny | 5 mph NNW | 0% |
| Tuesday Night | 36°F | Partly Cloudy | 5 mph NW | 1% |
Forecast source: National Weather Service (api.weather.gov) for Fairmont (43.645, -94.464). Updated through the day.
Growing snapshot for Fairmont
Last spring frost
Apr 25
First fall frost
Oct 14
Growing season
171 days
Hardiness zone
5a
More local growing data for Fairmont: nearby ZIP 56031 weather · frost dates · planting calendar · Minnesota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Fairmont, Mn (1.2 mi from Fairmont). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 5, 2026.