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La Grande weather in September 2025
Expect 70°F daytime maximum temperatures in the shade with on average 9 hours of sunshine per day in La Grande in September. Check more long-term weather averages for La Grande in September before you book your next holiday to Oregon in 2025/2026.
- 7070°F max day temperature
- 9 hours of sunshine per day
- 66 days with some rainfall
- 3939°F min night temperature
- 1212 hours of daylight per day
- 0No heat & humidity
- 1.11.1 inches of monthly rainfall
- 66 (High) UV index
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Recommended for Oregon
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The September weather guide for Oregon (La Grande) 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 La Grande in September?
Daytime temperatures usually reach 70°F in La Grande in September, falling to 39°F at night.
How sunny is it in La Grande in September?
There are normally 9 hours of bright sunshine each day in La Grande in September - that's 73% of daylight hours.
Does it rain in La Grande in September?
There are usually 6 days with some rain in La Grande in September and the average monthly rainfall is 1.1 inches.
La Grande September sunrise & sunset times
Browse the sunrise and sunset times for La Grande in September 2025. Select a month to view La Grande sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Monday, 1st September 2025 | 05:14 | 18:29 |
Monday, 15th September 2025 | 05:31 | 18:02 |
Tuesday, 30th September 2025 | 05:50 | 17:34 |
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