Willmar, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Willmar, a city in Kandiyohi County, Minnesota.
This Afternoon
54°F
Light Rain
Rain and patchy fog. Cloudy. High near 54, with temperatures falling to around 50 in the afternoon. North northwest wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast for Willmar
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 54°F | Light Rain | 15 mph NNW | 100% |
| Tonight | 43°F | Rain | 15 mph NNW | 100% |
| Wednesday | 49°F | Rain | 15 mph NNW | 96% |
| Wednesday Night | 39°F | Light Rain | 15 mph NNW | 89% |
| Thursday | 45°F | Mostly Cloudy | 10 to 15 mph N | 13% |
| Thursday Night | 32°F | Mostly Cloudy | 0 to 10 mph NNE | 0% |
| Friday | 43°F | Mostly Sunny | 0 to 5 mph ESE | 0% |
| Friday Night | 30°F | Mostly Cloudy | 0 to 5 mph S | 1% |
| Saturday | 53°F | Mostly Sunny | 5 to 10 mph SW | 2% |
| Saturday Night | 35°F | Partly Cloudy | 5 mph W | 7% |
| Sunday | 55°F | Mostly Sunny | 5 to 10 mph W | 4% |
| Sunday Night | 36°F | Partly Cloudy | 5 mph S | 0% |
| Monday | 57°F | Mostly Sunny | 5 to 15 mph WSW | 0% |
| Monday Night | 36°F | Mostly Clear | 5 to 10 mph WNW | 0% |
Forecast source: National Weather Service (api.weather.gov) for Willmar (45.121, -95.059). Updated through the day.
Growing snapshot for Willmar
Last spring frost
Apr 30
First fall frost
Oct 7
Growing season
159 days
Hardiness zone
4b
More local growing data for Willmar: nearby ZIP 56201 weather · frost dates · planting calendar · Minnesota frost dates
Nearby towns & communities
Climate data from the nearest NOAA station, Willmar Wwtp, Mn (0.5 mi from Willmar). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 3, 2026.