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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| 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.