Willmar, MN Weather & Growing Conditions
Overnight
45°F
Light Rain
Rain and patchy fog. Cloudy, with a low around 45. Northwest wind around 15 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 45°F | Light Rain | 15 mph NW | 90% |
| Wednesday | 48°F | Light Rain | 15 mph NW | 95% |
| Wednesday Night | 39°F | Light Rain then Slight Chance Drizzle | 15 mph NW | 83% |
| Thursday | 44°F | Mostly Cloudy | 10 to 15 mph NNW | 3% |
| Thursday Night | 30°F | Mostly Cloudy | 0 to 10 mph NNE | 0% |
| Friday | 43°F | Sunny | 0 mph | 0% |
| Friday Night | 28°F | Partly Cloudy | 0 mph | 0% |
| Saturday | 49°F | Mostly Sunny | 0 to 10 mph SW | 2% |
| Saturday Night | 34°F | Mostly Clear | 5 mph W | 1% |
| Sunday | 52°F | Sunny | 5 mph WSW | 0% |
| Sunday Night | 36°F | Mostly Clear | 5 mph SSW | 0% |
| Monday | 57°F | Mostly Sunny | 5 to 10 mph WSW | 0% |
| Monday Night | 36°F | Mostly Clear | 5 mph WNW | 0% |
| Tuesday | 53°F | Mostly Sunny | 5 mph WNW | 1% |
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 Nov 4, 2026.