Harman US

Mankato, MN Weather & Growing Conditions

Overnight
58°F
Slight Chance Drizzle
A slight chance of drizzle. Cloudy, with a low around 58. East northeast wind around 10 mph. Chance of precipitation is 20%.

7-day forecast

WhenTempForecastWindPrecip
Overnight 58°F Slight Chance Drizzle 10 mph ENE 22%
Saturday 63°F Chance Drizzle 5 to 10 mph NE 31%
Saturday Night 56°F Mostly Cloudy 10 mph NNE 8%
Sunday 67°F Partly Sunny 10 to 15 mph NE 2%
Sunday Night 50°F Mostly Cloudy 10 mph ENE 5%
Monday 63°F Mostly Cloudy 5 to 10 mph ENE 8%
Monday Night 45°F Mostly Cloudy 5 mph E 8%
Tuesday 64°F Mostly Sunny 5 to 10 mph E 3%
Tuesday Night 43°F Mostly Clear 5 mph ESE 1%
Wednesday 67°F Sunny 5 mph SE 2%
Wednesday Night 48°F Mostly Clear 5 mph SE 9%
Thursday 69°F Mostly Sunny 5 mph SSE 11%
Thursday Night 51°F Partly Cloudy 5 mph SE 6%
Friday 72°F Mostly Sunny 5 mph SE 4%

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 19, 2026.