The climate in Duchesne during September can be summarized as mild and reasonably dry.
September is in the fall / autumn in Duchesne and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 23°C (73°F), whilst at night 5°C (40°F) is normal.
Daytime temperature | 22.8°C 73°F |
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Nightly temperature | 4.7°C 40.4°F |
Average temperature | 13.7°C 56.7°F |
Daily sunshine | 10.3 hrs |
Avg rainfall | 32 mm 1.2 ins |
Rainy days | 7 days |
Sea temperature | 16.8°C 62.2°F |
Humidity | 44% |
Windspeed | 15.1kph 9 mph |
On average September is the 2nd wettest month of the year in Duchesne with around 32mm 1.2 inches of rain making it a reasonably dry time to visit. This rainfall is typically spread over 7 days, although this may vary considerably.
On the flip side this corresponds to an average of 10.3 hours of sunshine per day.
The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Duchesne in September 2025.
Best places to visit in September
Hottest month: | July | 28.6°C 83.5°F |
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Driest month: | June | 21mm 0.8ins |
Sunniest month: | June | 12.4hrs |
Coldest month: | January | -1.7°C 28.9°F |
Wettest month: | August | 33mm 1.3ins |