Fairmont, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Fairmont, a city in Martin County, Minnesota.
Overnight
61°F
Chance Drizzle
A chance of drizzle and patchy fog. Cloudy, with a low around 61. Northeast wind around 5 mph. Chance of precipitation is 30%.
7-day forecast for Fairmont
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 61°F | Chance Drizzle | 5 mph NE | 32% |
| Saturday | 62°F | Chance Drizzle then Areas Of Fog | 5 to 10 mph NNE | 30% |
| Saturday Night | 57°F | Cloudy | 10 mph NNE | 10% |
| Sunday | 66°F | Mostly Cloudy | 10 to 15 mph NE | 10% |
| Sunday Night | 51°F | Chance Rain Showers | 10 mph ENE | 28% |
| Monday | 61°F | Chance Rain Showers | 10 mph ENE | 30% |
| Monday Night | 46°F | Chance Rain Showers then Mostly Cloudy | 5 to 10 mph ENE | 28% |
| Tuesday | 63°F | Mostly Sunny | 5 mph E | 4% |
| Tuesday Night | 43°F | Mostly Clear | 0 to 5 mph ESE | 1% |
| Wednesday | 65°F | Sunny | 0 to 5 mph SE | 2% |
| Wednesday Night | 48°F | Partly Cloudy | 5 mph SE | 12% |
| Thursday | 67°F | Slight Chance Rain Showers | 5 mph SSE | 17% |
| Thursday Night | 51°F | Partly Cloudy | 5 mph SE | 8% |
| Friday | 70°F | Mostly Sunny | 5 to 10 mph SE | 6% |
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 Sep 19, 2026.