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Weather in Willmar for September 2025

Your guide to Willmar weather in September - trends and predictions

    Temperatures

  • 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.

    • Rain 🌧️

  • Willmar experiences moderate rainfall in September, with an average of 6 rainy days and a total precipitation of 53 mm.

    • More

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Average dry days
24
Dry days
Average rainy days
6
Rainy days
Average snowy days
0
Snow days
Average temperatures
26°/14°
Temperatures
Average wind speed
23 km/h
Avg max wind
Average humidity
62 %
Avg humidity

Willmar in September average weather

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Overcast
20°
2
Sunny
22°
3
Sunny
26°
4
Sunny
29°
5
Partly cloudy
22°
6
Partly cloudy
19°
7
Sunny
20°
8
Sunny
27°
9
Sunny
30°
10
Patchy rain possible
28°
11
Sunny
32°
12
Sunny
31°
13
Sunny
29°
14
Overcast
27°
15
Patchy rain possible
32°
16
Patchy rain possible
31°
17
Light rain shower
26°
18
Partly cloudy
29°
19
Thundery outbreaks possible
31°
20
Fog
30°
21
Mist
27°
22
Fog
23°
23
Patchy light rain with thunder
26°
24
Fog
22°
25
Light rain shower
27°
26
Fog
23°
27
Fog
26°
28
Overcast
28°
29
Light rain shower
28°
30
Fog
27°
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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

Click on a date for more information
August October
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 53 mm spread over approximately 6 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 23 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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