Mankato, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Mankato, a city in Blue Earth County, Minnesota.
Today
71°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 5pm. Mostly cloudy, with a high near 71. Northwest wind around 10 mph. Chance of precipitation is 30%.
7-day forecast for Mankato
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 71°F | Chance Showers And Thunderstorms | 10 mph NW | 33% |
| Tonight | 55°F | Partly Cloudy | 0 to 5 mph WNW | 11% |
| Wednesday | 74°F | Sunny | 0 to 5 mph SW | 0% |
| Wednesday Night | 56°F | Mostly Clear | 0 to 5 mph SSW | 0% |
| Thursday | 78°F | Sunny | 5 to 10 mph SSW | 1% |
| Thursday Night | 63°F | Mostly Clear | 10 mph S | 3% |
| Friday | 82°F | Sunny | 10 mph SSW | 11% |
| Friday Night | 65°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph S | 23% |
| Saturday | 82°F | Sunny | 5 to 10 mph S | 10% |
| Saturday Night | 66°F | Chance Showers And Thunderstorms | 10 mph SSE | 45% |
| Sunday | 82°F | Chance Showers And Thunderstorms | 5 to 10 mph SSE | 45% |
| Sunday Night | 66°F | Slight Chance Showers And Thunderstorms | 5 mph E | 31% |
| Monday | 80°F | Chance Showers And Thunderstorms | 5 to 10 mph ENE | 31% |
| Monday Night | 66°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 to 10 mph NE | 22% |
Forecast source: National Weather Service (api.weather.gov) for Mankato (44.171, -93.976). Updated through the day.
Growing snapshot for Mankato
Last spring frost
Apr 30
First fall frost
Oct 9
Growing season
161 days
Hardiness zone
5a
More local growing data for Mankato: nearby ZIP 56001 weather · frost dates · planting calendar · Minnesota frost dates
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St. Clair
Vernon Center
Climate data from the nearest NOAA station, Mankato, Mn (2.8 mi from Mankato). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.