Willmar, MN Weather & Growing Conditions
Overnight
58°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms before 5am. Mostly cloudy, with a low around 58. North northwest wind around 10 mph, with gusts as high as 30 mph. Chance of precipitation is 30%.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Overnight | 58°F | Chance Showers And Thunderstorms | 10 mph NNW | 29% |
| Tuesday | 71°F | Patchy Smoke then Partly Sunny | 10 mph NW | 5% |
| Tuesday Night | 53°F | Mostly Clear | 0 to 10 mph WSW | 1% |
| Wednesday | 76°F | Sunny | 0 to 10 mph SW | 0% |
| Wednesday Night | 57°F | Mostly Clear | 5 to 10 mph SSW | 0% |
| Thursday | 81°F | Sunny | 5 to 15 mph SSW | 0% |
| Thursday Night | 62°F | Mostly Clear | 10 mph S | 2% |
| Friday | 83°F | Sunny | 5 to 10 mph SSW | 5% |
| Friday Night | 62°F | Mostly Clear | 5 to 10 mph S | 7% |
| Saturday | 82°F | Sunny | 5 to 10 mph SSW | 10% |
| Saturday Night | 63°F | Chance Showers And Thunderstorms | 10 mph ESE | 41% |
| Sunday | 81°F | Chance Showers And Thunderstorms then Mostly Sunny | 5 to 10 mph E | 41% |
| Sunday Night | 63°F | Partly Cloudy then Slight Chance Showers And Thunderstorms | 5 mph ENE | 17% |
| Monday | 80°F | Slight Chance Showers And Thunderstorms | 5 to 10 mph NE | 17% |
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 Aug 4, 2026.