| < September >
|Normal Max/ High Temperature
|Min/ Low Temperature
|Number of Wet Days (probability of rain on a day)
|Average Sunlight per day
|Average Daylight per day
|Sunny (Cloudy) Daylight Hours
|Sun altitude at solar noon on the 21st day.
- The average temperature in Des Moines, Iowa in September is somewhat warm at 18.4 °C (65.12 °F).
- Afternoons can be fairly hot with average high temperatures reaching 24.2 °C (75.6 °F).
- Overnight temperatures are generally quite mild with an average low of 12.5 °C (54.5 °F).
- The variation/ range of diurnal mean temperatures in September is 11.7 °C (21.1 °F).
- The weather in September is dryish with intermittent rain. Just 89.7mm (3.5in) of H2O descends during on average 8 days.
- The blue above Des Moines, Iowa is quite sunny having an average of a respectable 8:40 of gorgeous sunshine per day.
- The shortest day is 11:44 long and the longest day is 13:06 long with an average length of 12:25.
- There are approximately 3:34 per day when bright sunshine is absent due to cloud, haze or the sun being too low on the horizon to register.
- It is sunny approximately 70.8% of daylight hours and cloudy 29.2% of daylight hours.
Check the distance to and compare the Des Moines, Iowa September averages with somewhere beginning with:
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Weather Trend Graph for September in Des Moines, Iowa, Usa
Navigate to September Weather in Locations Surrounding Des Moines, Iowa:
- Algona , Ia, Usa - 165.6 kms (102.9 miles) N
- Fort Dodge, Ia, Usa - 165.6 kms (102.9 miles) N
- Storm Lake, Ia, Usa - 178.1 kms (110.7 miles) NW
- Rockwell City, Ia, Usa - 123.4 kms (76.7 miles) WNW
- Omaha, Nebraska, Usa - 189.4 kms (117.7 miles) W
- Indianola, Ia, Usa - 66.1 kms (41.1 miles) SSW
- Clarinda, Ia, Usa - 127.5 kms (79.2 miles) WSW
- Spickard, Mo, Usa - 142.8 kms (88.7 miles) S
- Charles City, Ia, Usa - 171.6 kms (106.7 miles) NNE
- Iowa Falls, Ia, Usa - 114.8 kms (71.3 miles) NNE
- Toledo, Ia, Usa - 74.8 kms (46.5 miles) NE
- Belle Plaine, Ia, Usa - 146.3 kms (90.9 miles) ENE
- Washington, Ia, Usa - 150.1 kms (93.3 miles) ESE
- Fairfield, Ia, Usa - 150.1 kms (93.3 miles) ESE