Willmar (MN) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Willmar.
Climate overview of Willmar
Willmar, Minnesota, United States of America, experiences significant temperature variation throughout the year. Summers bring daytime highs of 28°C (82°F) in July, while winters cool to -6°C (21°F) in January.
Annual rain/snowfall is moderate at around 763 mm (30 in), with August being the wettest month. The city also has a distinct dry season from November to February, with warm summers and very cold winters.
Willmar Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Willmar - and find the best time to visit.
Monthly Temperature in Willmar
Depending on the time of the year, temperatures range from comfortable to very cold in Willmar. Average daytime temperatures reach a comfortable 28°C (82°F) in July. In January, the coolest month of the year, temperatures drop to a very cold -6°C (21°F).
At night, temperatures range from around 16°C (61°F) in July to -16°C (3°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Willmar
Generally, Willmar has a moderate amount of precipitation, averaging 763 mm (30 in) of rain/snowfall annually. Willmar can be quite wet during August, receiving approximately 134 mm (5.3 in) of precipitation over 10 rainy days.
In contrast, during the driest month (January), you will experience much drier conditions, with 12 mm (0.5 in) of precipitation spread across 6 snowy days. For more details, please visit our Willmar Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Willmar
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May, July and September
- Warmest weather: July
- Fewest rainy days: January, February and November
- Seasonal pattern: A distinct dry season from November to February, with warm summers and very cold winters
- Coldest conditions: January, with freezing nights around -16°C (3°F).
Frequently asked questions about the climate in Willmar
What is the best time to visit Willmar?
May, July and September typically offer the most optimal weather in Willmar. In contrast, January, February, March and December tend to have less optimal conditions. Willmar has a distinct dry season from November to February, with warm summers and very cold winters.
What temperatures can I expect in Willmar?
Daytime highs range from -6°C (21°F) in January to 28°C (82°F) in July. Nighttime lows range from -16°C (3°F) to 16°C (61°F). Temperatures vary considerably through the year.
How much rain does Willmar get?
Annual rainfall is around 763 mm (30 in). August is the wettest month with 134 mm (5.3 in), while January is the driest with 12 mm (0.5 in).
Willmar 3-Day Forecast
Willmar on the map
Willmar is highlighted - select any city to see its climate.
Popular this month
Where to go in August - average daytime high across popular destinations.
Kissimmee
33°C (91°F) Orlando33°C (91°F) Miami Beach32°C (90°F) Destin32°C (90°F) New York City
29°C (84°F) Big Bear Lake
27°C (81°F) Los Angeles
24°C (75°F) San Francisco22°C (72°F) 
Bucket list
Need travel inspiration? Check out our bucket list articles and be inspired.
Yosemite National Park is definitely worth a visit
Vast forests, blue lakes, towering sequoias, and majestic waterfalls hint at the beauty of Yosemite National Park—a true natural masterpiece.
The 10 most alternative cities in the United States
Discover the top 10 fun and alternative U.S. cities rich in art, culture, and adventure. From Portland's hippy charm to Sedona's stunning landscapes.
Sedona: Explore Majestic Red Rock Landscapes
A picturesque artists' town surrounded by red rocks and known for its spirituality, vortex energy, and stunning hikes like Cathedral Rock.
10 most idyllic villages to visit in the United States
Discover 10 idyllic villages in the USA, from California to Vermont. Explore their unique charm, rich history, stunning nature, and vibrant arts scenes.