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Havre weather in September 2025
Expect 70°F daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in Havre in September. Check more long-term weather averages for Havre in September before you book your next holiday to Montana in 2025/2026.
- 7070°F max day temperature
- 9 hours of sunshine per day
- 55 days with some rainfall
- 4141°F min night temperature
- 1313 hours of daylight per day
- 0No heat & humidity
- 1.11.1 inches of monthly rainfall
- 55 (Moderate) UV index
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Recommended for Montana
The September weather guide for Montana (Havre) 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) | Imperial (°F)
More about the USA
How hot is it in Havre in September?
Daytime temperatures usually reach 70°F in Havre in September, falling to 41°F at night.
How sunny is it in Havre in September?
There are normally 9 hours of bright sunshine each day in Havre in September - that's 71% of daylight hours.
Does it rain in Havre in September?
There are usually 5 days with some rain in Havre in September and the average monthly rainfall is 1.1 inches.
Havre September sunrise & sunset times
Browse the sunrise and sunset times for Havre in September 2025. Select a month to view Havre sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Monday, 1st September 2025 | 05:37 | 19:00 |
Monday, 15th September 2025 | 05:56 | 18:30 |
Tuesday, 30th September 2025 | 06:17 | 17:59 |
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