Willmar, MN Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Willmar, a city in Kandiyohi County, Minnesota.
This Afternoon
61°F
Chance Rain Showers
A chance of rain showers and patchy fog. Cloudy, with a high near 61. East wind around 15 mph, with gusts as high as 30 mph. Chance of precipitation is 40%. New rainfall amounts between a quarter and half of an inch possible.
7-day forecast for Willmar
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 61°F | Chance Rain Showers | 15 mph E | 43% |
| Tonight | 54°F | Chance Rain Showers then Drizzle Likely | 10 to 15 mph E | 63% |
| Saturday | 63°F | Cloudy | 10 to 15 mph NE | 13% |
| Saturday Night | 51°F | Mostly Cloudy | 5 to 10 mph NNE | 3% |
| Sunday | 66°F | Partly Sunny | 10 to 15 mph NE | 1% |
| Sunday Night | 47°F | Cloudy | 10 to 15 mph ENE | 6% |
| Monday | 61°F | Mostly Cloudy | 10 mph E | 10% |
| Monday Night | 44°F | Mostly Cloudy | 5 mph E | 7% |
| Tuesday | 63°F | Mostly Sunny | 5 to 10 mph ESE | 1% |
| Tuesday Night | 44°F | Partly Cloudy | 5 mph ESE | 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% |
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 Sep 19, 2026.