Willmar, MN Weather & Growing Conditions
Tonight
54°F
Drizzle Likely
Drizzle likely before 5am. Cloudy. Low around 54, with temperatures rising to around 57 overnight. East northeast wind 10 to 15 mph. Chance of precipitation is 30%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Tonight | 54°F | Drizzle Likely | 10 to 15 mph ENE | 33% |
| Saturday | 63°F | Cloudy | 10 mph NE | 17% |
| Saturday Night | 51°F | Mostly Cloudy | 5 to 10 mph NNE | 4% |
| Sunday | 66°F | Partly Sunny | 10 to 15 mph NE | 1% |
| Sunday Night | 47°F | Cloudy | 10 to 15 mph ENE | 6% |
| Monday | 62°F | Mostly Cloudy | 10 mph E | 10% |
| Monday Night | 44°F | Mostly Cloudy | 5 mph E | 7% |
| Tuesday | 64°F | Mostly Sunny | 5 to 10 mph ESE | 1% |
| Tuesday Night | 45°F | Mostly Clear | 5 mph SE | 0% |
| Wednesday | 65°F | Mostly Sunny | 5 to 10 mph SE | 5% |
| Wednesday Night | 48°F | Partly Cloudy then Slight Chance Rain Showers | 5 mph SSE | 20% |
| Thursday | 69°F | Slight Chance Rain Showers then Partly Sunny | 5 to 10 mph SSE | 20% |
| Thursday Night | 51°F | Partly Cloudy | 5 mph SE | 6% |
| Friday | 70°F | Mostly Sunny | 5 to 10 mph SSE | 9% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Willmar, MN
Last spring frost
Apr 30
First fall frost
Oct 7
Growing season
159 days
Hardiness zone
4b
Explore more for Willmar, MN: full frost dates · planting calendar · Minnesota frost dates
Climate data from the nearest NOAA station, Willmar Wwtp, Mn (0.5 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.