Weather in Cass County, North Dakota for September 2026
Until now, September 2026 in Cass County has been nearly identical to the historical average, with a temperature of 26.1 °F (showing only a slight deviation of 0 °F).
The forecast for the next days in Cass County predicts temperatures to be around 20 °F, close to the historical average.
In general, the average temperature in Cass County at the beginning of September is 24.7 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 20.6 °F by the end of September.
Cass County experiences moderate rainfall in September, with an average of 9 rainy days and a total precipitation of 79.9 mm.
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Cass County Weather September
Temperatures trend during September in Cass County
September weather in Cass County day by day
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Overcast | 26° /11° | 0 mm | 5 | |
| Sept. 2 |  Sunny | 26° /13° | 4.2 mm | 6 | |
| Sept. 3 | Sunny | 27° /14° | 11.8 mm | 5 | |
| Sept. 4 |  Moderate rain at times | 23° /12° | 7.5 mm | 5 | |
| Sept. 5 |  Partly cloudy | 23° /13° | 0.1 mm | 5 | |
| Sept. 6 |  Patchy rain possible | 24° /11° | 0.2 mm | 5 | |
| Sept. 7 | Sunny | 24° /11° | 5.1 mm | 4 | |
| Sept. 8 | Sunny | 28° /13° | 0 mm | 6 | |
| Sept. 9 | Sunny | 28° /15° | 0.4 mm | 7 | |
| Sept. 10 | Partly cloudy | 31° /14° | 0 mm | 6 | |
| Sept. 11 | Overcast | 27° /15° | 0 mm | 5 | |
| Sept. 12 | Sunny | 25° /15° | 4.2 mm | 6 | |
| Sept. 13 | Partly cloudy | 25° /16° | 2.2 mm | 6 | |
| Sept. 14 | Sunny | 26° /17° | 7.7 mm | 5 | |
| Sept. 15 |  Cloudy | 28° /16° | 0 mm | 7 | |
| Sept. 16 | Moderate or heavy rain shower | 27° /14° | 5.8 mm | 5 | |
| Sept. 17 | Overcast | 26° /15° | 6.1 mm | 5 | |
| Sept. 18 | Moderate or heavy rain shower | 24° /17° | 19.3 mm | 4 | |
| Sept. 19 | Overcast | 21° /13° | 0 mm | 3.5 | |
| Sept. 20 | Overcast | 21° /12° | 0 mm | 3.1 | |
| Sept. 21 | Overcast | 19° /9° | 0 mm | 3.5 | |
| Sept. 22 | Overcast | 19° /9° | 0 mm | 5 | |
| Sept. 23 | Overcast | 21° /10° | 0.2 mm | 6 | |
| Sept. 24 | Sunny | 25° /14° | 0 mm | 6 | |
| Sept. 25 | Sunny | 26° /16° | 0 mm | 7 | |
| Sept. 26 | Overcast | 20° /15° | 0.6 mm | 5 | |
| Sept. 27 | Overcast | 17° /9° | 21.2 mm | 3 | |
| Sept. 28 | Sunny | 18° /9° | 0.5 mm | 5 | |
| Sept. 29 | Sunny | 19° /9° | 0 mm | 5 | |
| Sept. 30 | Sunny | 19° /8° | 0 mm | 5 | |
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Cass County in September - FAQ
What are the expected maximum and minimum temperatures in Cass County during September?
How much rainfall should be expected in Cass County during September?
What are the typical wind conditions in Cass County during September?
September rainfall patterns in Cass County
UV exposure in Cass County during September
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Where is Cass County?Get accurate weather forecasts for Cass County, located at latitude 46.877 and longitude -96.79. Stay updated with localized weather information tailored for Cass County.