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Napa weather in September 2022
- 2727°C max day temperature
- 22 days with some rainfall
- 1111°C min night temperature
- 1212 hours of daylight per day
- MModerate heat & humidity
- 1010 mm of monthly rainfall
- 77 (High) UV index
Recommended for California
The September weather guide for California (Napa) 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 California
How hot is it in Napa in September?
Daytime temperatures usually reach 27°C in Napa in September with moderate heat and humidity, falling to 11°C at night.
How sunny is it in Napa in September?
There are normally 10 hours of bright sunshine each day in Napa in September - that's 80% of daylight hours.
Does it ever rain in Napa in September?
There are usually 2 days with some rain in Napa in September and the average monthly rainfall is 10mm.
Napa September sunrise & sunset times
Browse the sunrise and sunset times for Napa in September 2022. Select a month to view Napa sunrise and sunset times for the next 12 months.
|Date||Sunrise times||Sunset times|
|Thursday, 1st September 2022||06:39||19:39|
|Thursday, 15th September 2022||06:51||19:17|
|Friday, 30th September 2022||07:04||18:53|
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