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Mankato, MN Weather & Growing Conditions

This Afternoon
66°F
Cloudy
Cloudy. High near 66, with temperatures falling to around 63 in the afternoon. North northeast wind around 10 mph.

7-day forecast

WhenTempForecastWindPrecip
This Afternoon 66°F Cloudy 10 mph NNE 14%
Tonight 54°F Mostly Cloudy 10 mph NNE 8%
Sunday 68°F Mostly Cloudy 10 to 15 mph NE 2%
Sunday Night 50°F Mostly Cloudy 10 mph ENE 3%
Monday 61°F Slight Chance Rain Showers 10 mph ENE 18%
Monday Night 46°F Slight Chance Rain Showers then Mostly Cloudy 5 mph ENE 18%
Tuesday 63°F Mostly Sunny 5 to 10 mph E 3%
Tuesday Night 44°F Mostly Clear 5 mph ESE 0%
Wednesday 67°F Sunny 5 mph SE 0%
Wednesday Night 50°F Partly Cloudy then Slight Chance Rain Showers 5 mph SE 17%
Thursday 69°F Chance Rain Showers 5 to 10 mph SSE 34%
Thursday Night 54°F Slight Chance Rain Showers then Mostly Cloudy 5 mph SE 24%
Friday 73°F Partly Sunny 5 mph SE 13%
Friday Night 57°F Mostly Cloudy then Slight Chance Rain Showers 5 mph SE 15%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Mankato, MN

Last spring frost
May 2
First fall frost
Oct 4
Growing season
153 days
Hardiness zone
5a

Explore more for Mankato, MN: full frost dates · planting calendar · Minnesota frost dates

Climate data from the nearest NOAA station, St Peter, Mn (4.4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 20, 2026.