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Jamestown weather in September 2025
Expect 21°C daytime maximum temperatures in the shade with on average 8 hours of sunshine per day in Jamestown in September. Check more long-term weather averages for Jamestown in September before you book your next holiday to North Dakota in 2025/2026.
- 2121°C max day temperature
- 8 hours of sunshine per day
- 77 days with some rainfall
- 77°C min night temperature
- 1313 hours of daylight per day
- 0No heat & humidity
- 4444 mm of monthly rainfall
- 55 (Moderate) UV index
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Jamestown by month
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Recommended for North Dakota
The September weather guide for North Dakota (Jamestown) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.
Metric (°C / mm) | Imperial (°F / inches)
More about the USA
How hot is it in Jamestown in September?
Daytime temperatures usually reach 21°C in Jamestown in September, falling to 7°C at night.
How sunny is it in Jamestown in September?
There are normally 8 hours of bright sunshine each day in Jamestown in September - that's 61% of daylight hours.
Does it rain in Jamestown in September?
There are usually 7 days with some rain in Jamestown in September and the average monthly rainfall is 44mm.
Jamestown September sunrise & sunset times
Browse the sunrise and sunset times for Jamestown in September 2025. Select a month to view Jamestown sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Monday, 1st September 2025 | 05:55 | 19:14 |
Monday, 15th September 2025 | 06:13 | 18:46 |
Tuesday, 30th September 2025 | 06:33 | 18:16 |
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