Minnehaha County (Sioux Falls)
September
Weather in Minnehaha County, South Dakota for September 2027
Your guide to Minnehaha County weather in September - trends and predictions
In general, the average temperature in Minnehaha County at the beginning of September is 29.2 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 25.1 °C by the end of September.
Minnehaha County experiences moderate rainfall in September, with an average of 8 rainy days and a total precipitation of 216.5 mm.
Is September a good time to visit Minnehaha County? check out the best time to travel to Minnehaha County page.
✨ Is September a good time to visit Minnehaha County? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
22
Dry days
8
Rainy days
0
Snow days
27°/13°
Temperatures
24 km/h
Avg max wind
65 %
Avg humidity
Minnehaha County Weather September
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Temperatures trend during September in Minnehaha County
See the weather trend as well as the moving average line
September weather in Minnehaha County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Moderate rain | 28° /15° | 22.5 mm | 5 | |
| Sept. 2 |  Patchy rain possible | 32° /14° | 1.3 mm | 7 | |
| Sept. 3 |  Thundery outbreaks possible | 32° /15° | 0.4 mm | 7 | |
| Sept. 4 | Patchy rain possible | 34° /15° | 1.9 mm | 7.3 | |
| Sept. 5 |  Heavy rain | 28° /15° | 103.7 mm | 6 | |
| Sept. 6 |  Light rain | 25° /11° | 3.7 mm | 4 | |
| Sept. 7 |  Sunny | 26° /8° | 0.1 mm | 6 | |
| Sept. 8 | Moderate rain | 30° /13° | 16.9 mm | 6 | |
| Sept. 9 | Thundery outbreaks possible | 29° /16° | 1 mm | 6.8 | |
| Sept. 10 |  Fog | 29° /15° | 0.2 mm | 6 | |
| Sept. 11 | Mist | 29° /13° | 0 mm | 6.6 | |
| Sept. 12 | Thundery outbreaks possible | 28° /13° | 0 mm | 6.5 | |
| Sept. 13 |  Partly cloudy | 30° /14° | 0 mm | 6.4 | |
| Sept. 14 | Light rain | 28° /13° | 3.8 mm | 6 | |
| Sept. 15 | Fog | 28° /15° | 0.9 mm | 6 | |
| Sept. 16 | Partly cloudy | 28° /14° | 0.5 mm | 6 | |
| Sept. 17 | Thundery outbreaks possible | 25° /14° | 3.8 mm | 5 | |
| Sept. 18 | Moderate rain | 27° /15° | 13.3 mm | 5 | |
| Sept. 19 | Light rain | 26° /15° | 4.2 mm | 5 | |
| Sept. 20 | Light rain | 24° /12° | 3.2 mm | 5 | |
| Sept. 21 | Light rain | 22° /12° | 3 mm | 5 | |
| Sept. 22 | Light rain | 22° /11° | 3.1 mm | 4 | |
| Sept. 23 | Light rain | 22° /11° | 9.9 mm | 5 | |
| Sept. 24 | Light rain | 22° /12° | 4.1 mm | 4 | |
| Sept. 25 | Patchy rain possible | 24° /12° | 0.9 mm | 5 | |
| Sept. 26 | Light rain | 25° /12° | 6.2 mm | 5 | |
| Sept. 27 | Light rain | 25° /13° | 2.6 mm | 5 | |
| Sept. 28 | Sunny | 26° /11° | 0.4 mm | 5 | |
| Sept. 29 | Light rain | 29° /14° | 5.1 mm | 5 | |
| Sept. 30 |  Overcast | 26° /15° | 0 mm | 4.9 | |
| Next | |||||
Important Notice
Our weather forecast for Minnehaha 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 Minnehaha County forecast closer to your planned date for the most up-to-date weather information.
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Minnehaha County in September - FAQ
What are the expected maximum and minimum temperatures in Minnehaha County during September?
Enjoy moderate daytime temperatures of up to 27° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Minnehaha County during September?
Significant rainfall exceeding 216.5 mm is expected in Minnehaha County during September, occurring over more than 8 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Minnehaha County during September?
The average wind speed in Minnehaha County during September is 24 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Minnehaha County
Explore the daily rainfall trends and prepare for Minnehaha Countys September weather 💧
Typically, Minnehaha County has 8 rainy days in September with a total of 216.5 mm of rainfall.
UV exposure in Minnehaha County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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