Woodbury County (Sioux City)
September
Weather in Woodbury County, Iowa for September 2026
Your guide to Woodbury County weather in September - trends and predictions
So far, September 2026 in Woodbury County shows a warmer trend than usual by 2.6 °F.
The forecast for the next days in Woodbury County predicts a temperature of 24 °F, which is cooler than the historical average.
In general, the average temperature in Woodbury County at the beginning of September is 28.1 °F. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 25.7 °F by the end of September.
Woodbury County experiences moderate rainfall in September, with an average of 6 rainy days and a total precipitation of 56 mm.
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Temperatures
Rain 🌧️
More
24
Dry days
6
Rainy days
0
Snow days
26°/13°
Temperatures
22 km/h
Avg max wind
76 %
Avg humidity
Woodbury County Weather September
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Temperatures trend during September in Woodbury County
See the weather trend as well as the moving average line
September weather in Woodbury County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Moderate or heavy rain shower | 28° /17° | 4.9 mm | 4 | |
| Sept. 2 |  Fog | 31° /16° | 0.6 mm | 5 | |
| Sept. 3 |  Heavy rain at times | 27° /16° | 2.1 mm | 6 | |
| Sept. 4 |  Overcast | 29° /14° | 0 mm | 6 | |
| Sept. 5 |  Sunny | 29° /15° | 0.4 mm | 7 | |
| Sept. 6 | Sunny | 26° /11° | 87.1 mm | 4 | |
| Sept. 7 | Fog | 27° /11° | 4 mm | 3 | |
| Sept. 8 | Overcast | 30° /17° | 12.9 mm | 4 | |
| Sept. 9 |  Thundery outbreaks possible | 27° /16° | 0 mm | 7 | |
| Sept. 10 | Mist | 29° /14° | 0 mm | 7 | |
| Sept. 11 | Overcast | 30° /17° | 0.2 mm | 6 | |
| Sept. 12 |  Partly cloudy | 28° /17° | 0 mm | 7 | |
| Sept. 13 | Mist | 29° /14° | 1.2 mm | 7 | |
| Sept. 14 | Overcast | 28° /15° | 13 mm | 4 | |
| Sept. 15 | Fog | 28° /15° | 2.2 mm | 4 | |
| Sept. 16 | Overcast | 19° /14° | 1.3 mm | 1.4 | |
| Sept. 17 | Fog | 25° /19° | 4.5 mm | 5.7 | |
| Sept. 18 | Sunny | 34° /20° | 7 mm | 4.4 | |
| Sept. 19 | Overcast | 23° /15° | 2.9 mm | 2 | |
| Sept. 20 | Overcast | 17° /13° | 0.7 mm | 4 | |
| Sept. 21 |  Patchy rain possible | 16° /13° | 2.3 mm | 3 | |
| Sept. 22 | Sunny | 23° /12° | 0.1 mm | 6 | |
| Sept. 23 | Patchy rain possible | 24° /16° | 2.2 mm | 6 | |
| Sept. 24 | Sunny | 19° /11° | 0 mm | 5 | |
| Sept. 25 | Sunny | 24° /11° | 0 mm | 6 | |
| Sept. 26 | Sunny | 28° /16° | 0 mm | 7 | |
| Sept. 27 | Overcast | 32° /21° | 0 mm | 8 | |
| Sept. 28 | Sunny | 32° /18° | 0 mm | 8 | |
| Sept. 29 | Sunny | 20° /9° | 0 mm | 5 | |
| Sept. 30 | Mist | 25° /16° | 0 mm | 6 | |
| Next | |||||
Important Notice
Our weather forecast for Woodbury County 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 Woodbury County forecast closer to your planned date for the most up-to-date weather information.
Change Month
Woodbury County in September - FAQ
What are the expected maximum and minimum temperatures in Woodbury County during September?
Enjoy moderate daytime temperatures of up to 26° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Woodbury County during September?
Moderate rainfall is anticipated in Woodbury County during September, with a total of 56 mm spread over approximately 6 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in Woodbury County during September?
The average wind speed in Woodbury County during September is 22 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Woodbury County
Explore the daily rainfall trends and prepare for Woodbury Countys September weather 💧
Typically, Woodbury County has 6 rainy days in September with a total of 56 mm of rainfall.
UV exposure in Woodbury County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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Where is Woodbury County?Get accurate weather forecasts for Woodbury County, located at latitude 42.5 and longitude -96.4. Stay updated with localized weather information tailored for Woodbury County.
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