Blue Earth, MN Weather & Growing Conditions
Tonight
43°F
Rain
Rain likely before 7pm, then rain and patchy fog. Cloudy. Low around 43, with temperatures rising to around 47 overnight. Northwest wind around 15 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 43°F | Rain | 15 mph NW | 95% |
| Wednesday | 49°F | Light Rain | 15 mph WNW | 93% |
| Wednesday Night | 39°F | Light Rain | 15 mph NW | 82% |
| Thursday | 47°F | Light Rain Likely | 15 mph NNW | 57% |
| Thursday Night | 33°F | Mostly Cloudy | 5 to 10 mph N | 9% |
| Friday | 46°F | Partly Sunny | 0 to 5 mph NNE | 0% |
| Friday Night | 29°F | Partly Cloudy | 0 mph | 0% |
| Saturday | 53°F | Mostly Sunny | 0 to 10 mph SW | 2% |
| Saturday Night | 34°F | Partly Cloudy | 5 mph W | 4% |
| Sunday | 58°F | Sunny | 5 to 10 mph W | 5% |
| Sunday Night | 35°F | Mostly Clear | 5 to 10 mph SSW | 1% |
| Monday | 61°F | Mostly Sunny | 10 mph WSW | 0% |
| Monday Night | 37°F | Mostly Clear | 5 mph WNW | 0% |
| Tuesday | 57°F | Mostly Sunny | 5 mph W | 1% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Blue Earth, MN
Last spring frost
Apr 27
First fall frost
Oct 10
Growing season
166 days
Hardiness zone
5a
Explore more for Blue Earth, MN: full frost dates · planting calendar · Minnesota frost dates
Climate data from the nearest NOAA station, Winnebago, Mn (10.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.