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Weather in Willmar for September 2025

Your guide to Willmar weather in September - trends and predictions
  • In general, the average temperature in Willmar at the beginning of September is 22.6 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 25.9 °F by the end of September.

  • The climate of Willmar in September is notably wet, with an average of 11 rainy days.

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Average dry days
19
Dry days
Average rainy days
11
Rainy days
Average snowy days
0
Snow days
Average temperatures
26°/14°
Temperatures
Average wind speed
24 km/h
Avg max wind
Average humidity
65 %
Avg humidity

Willmar in September average weather

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Temperatures trend during September in Willmar

See the weather trend as well as the moving average line

September weather day by day

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Date Weather Temperatures Rain UV More
Sept. 1 Overcast
Overcast
20° /11° 0 mm 5
Sept. 2 Sunny
Sunny
22° /9° 0 mm 6
Sept. 3 Sunny
Sunny
26° /14° 0 mm 7
Sept. 4 Sunny
Sunny
29° /15° 0.1 mm 7
Sept. 5 Partly cloudy
Partly cloudy
22° /16° 0.3 mm 6
Sept. 6 Partly cloudy
Partly cloudy
19° /9° 0 mm 5
Sept. 7 Sunny
Sunny
20° /7° 0 mm 6
Sept. 8 Sunny
Sunny
27° /10° 0 mm 7
Sept. 9 Sunny
Sunny
30° /15° 0 mm 8
Sept. 10 Patchy rain possible
Patchy rain possible
28° /17° 1.3 mm 6
Sept. 11 Sunny
Sunny
32° /16° 0 mm 8
Sept. 12 Sunny
Sunny
31° /16° 0 mm 8
Sept. 13 Sunny
Sunny
29° /17° 0 mm 7
Sept. 14 Overcast
Overcast
27° /17° 0 mm 6
Sept. 15 Patchy rain possible
Patchy rain possible
32° /18° 0.6 mm 7
Sept. 16 Patchy rain possible
Patchy rain possible
31° /20° 0.1 mm 7
Sept. 17 Light rain shower
Light rain shower
26° /18° 8.4 mm 6
Sept. 18 Partly cloudy
Partly cloudy
29° /12° 0 mm 7
Sept. 19 Thundery outbreaks possible
Thundery outbreaks possible
31° /15° 0 mm 7
Sept. 20 Fog
Fog
30° /12° 0 mm 7
Sept. 21 Mist
Mist
27° /13° 0 mm 7
Sept. 22 Fog
Fog
23° /8° 2.2 mm 6
Sept. 23 Patchy light rain with thunder
Patchy light rain with thunder
26° /11° 31.2 mm 6
Sept. 24 Fog
Fog
22° /11° 0.5 mm 5
Sept. 25 Light rain shower
Light rain shower
27° /11° 0.5 mm 6
Sept. 26 Fog
Fog
23° /12° 0.3 mm 6
Sept. 27 Fog
Fog
26° /12° 0.2 mm 6
Sept. 28 Overcast
Overcast
28° /12° 0 mm 7
Sept. 29 Light rain shower
Light rain shower
28° /14° 6.3 mm 7
Sept. 30 Fog
Fog
27° /14° 1 mm 7
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Important Notice
Our weather forecast for Willmar in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Willmar forecast closer to your planned date for the most up-to-date weather information.

Willmar in September - FAQ

What are the expected maximum and minimum temperatures in Willmar during September?
Enjoy moderate daytime temperatures of up to 26° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Willmar during September?
Moderate rainfall is anticipated in Willmar during September, with a total of 95.3 mm spread over approximately 11 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Willmar during September?
The average wind speed in Willmar during September is 24 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Willmar

Explore the daily rainfall trends and prepare for Willmars September weather 💧

UV exposure in Willmar during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️

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Location coordinates Where is Willmar?

Get accurate weather forecasts for Willmar, located at latitude 45.122 and longitude -95.043. Stay updated with localized weather information tailored for Willmar.

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