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