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Weather in Des Moines for September 2025

Your guide to Des Moines weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in Des Moines at the beginning of September is 31.4 °F. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 28.4 °F by the end of September.

    • Rain 🌧️

  • Des Moines experiences moderate rainfall in September, with an average of 7 rainy days and a total precipitation of 71.3 mm.

    • More

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Average dry days
23
Dry days
Average rainy days
7
Rainy days
Average snowy days
0
Snow days
Average temperatures
29°/14°
Temperatures
Average wind speed
21 km/h
Avg max wind
Average humidity
57 %
Avg humidity

Des Moines in September average weather

Move between months or click on a day
August
October
Mon.Tue.Wed.Thu.Fri.Sat.Sun.
1
Sunny
31°
2
Sunny
33°
3
Sunny
34°
4
Mist
34°
5
Thundery outbreaks possible
35°
6
Overcast
27°
7
Mist
26°
8
Cloudy
30°
9
Partly cloudy
33°
10
Overcast
32°
11
Heavy rain
30°
12
Mist
30°
13
Partly cloudy
28°
14
Partly cloudy
30°
15
Overcast
30°
16
Fog
29°
17
Cloudy
27°
18
Mist
30°
19
Thundery outbreaks possible
30°
20
Thundery outbreaks possible
30°
21
Partly cloudy
29°
22
Light rain shower
24°
23
Patchy rain possible
26°
24
Fog
25°
25
Fog
28°
26
Cloudy
27°
27
Fog
26°
28
Mist
29°
29
Partly cloudy
32°
30
Patchy light rain with thunder
32°
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Temperatures trend during September in Des Moines

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 Sunny
Sunny
 31° /12° 0 mm 8
Sept. 2 Sunny
Sunny
 33° /12° 0 mm 9
Sept. 3 Sunny
Sunny
 34° /13° 0 mm 9
Sept. 4 Mist
Mist
 34° /15° 0 mm 8
Sept. 5 Thundery outbreaks possible
Thundery outbreaks possible
 35° /20° 0.8 mm 8
Sept. 6 Overcast
Overcast
 27° /13° 0 mm 6
Sept. 7 Mist
Mist
 26° /7° 0 mm 7
Sept. 8 Cloudy
Cloudy
 30° /10° 0 mm 7
Sept. 9 Partly cloudy
Partly cloudy
 33° /11° 0 mm 8
Sept. 10 Overcast
Overcast
 32° /16° 0.2 mm 8
Sept. 11 Heavy rain
Heavy rain
 30° /15° 13.5 mm 7
Sept. 12 Mist
Mist
 30° /13° 0 mm 7
Sept. 13 Partly cloudy
Partly cloudy
 28° /14° 0 mm 7
Sept. 14 Partly cloudy
Partly cloudy
 30° /12° 0 mm 8
Sept. 15 Overcast
Overcast
 30° /16° 0 mm 7
Sept. 16 Fog
Fog
 29° /15° 0.2 mm 7
Sept. 17 Cloudy
Cloudy
 27° /12° 0 mm 6
Sept. 18 Mist
Mist
 30° /12° 0 mm 7
Sept. 19 Thundery outbreaks possible
Thundery outbreaks possible
 30° /17° 2.9 mm 7
Sept. 20 Thundery outbreaks possible
Thundery outbreaks possible
 30° /16° 3 mm 7
Sept. 21 Partly cloudy
Partly cloudy
 29° /14° 27.5 mm 7
Sept. 22 Light rain shower
Light rain shower
 24° /13° 16.6 mm 5
Sept. 23 Patchy rain possible
Patchy rain possible
 26° /11° 4.2 mm 6
Sept. 24 Fog
Fog
 25° /11° 0.4 mm 6
Sept. 25 Fog
Fog
 28° /11° 0 mm 6
Sept. 26 Cloudy
Cloudy
 27° /13° 0 mm 7
Sept. 27 Fog
Fog
 26° /12° 0 mm 6
Sept. 28 Mist
Mist
 29° /13° 0 mm 6
Sept. 29 Partly cloudy
Partly cloudy
 32° /14° 0 mm 8
Sept. 30 Patchy light rain with thunder
Patchy light rain with thunder
 32° /15° 2 mm 7
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Important Notice
Our weather forecast for Des Moines 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 Des Moines forecast closer to your planned date for the most up-to-date weather information.

Des Moines in September - FAQ

What are the expected maximum and minimum temperatures in Des Moines during September?
Enjoy moderate daytime temperatures of up to 29° and cooler nights around 14°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Des Moines during September?
Moderate rainfall is anticipated in Des Moines during September, with a total of 71.3 mm spread over approximately 7 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Des Moines during September?
The average wind speed in Des Moines during September is 21 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Des Moines

Explore the daily rainfall trends and prepare for Des Moiness September weather 💧

UV exposure in Des Moines during September

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

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Location coordinates Where is Des Moines?

Get accurate weather forecasts for Des Moines, located at latitude 41.601 and longitude -93.609. Stay updated with localized weather information tailored for Des Moines.

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