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Napa weather in September 2023
- 27°C max day temperature
27
- 10 hours of sunshine per day
- 2 days with some rainfall
2
- 11°C min night temperature
11
- 12 hours of daylight per day
12
- Moderate heat & humidity
M
- 10 mm of monthly rainfall
10
- 7 (High) UV index
7
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.
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
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 2023. Select a month to view Napa sunrise and sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
Date | Sunrise times | Sunset times |
---|---|---|
Friday, 1st September 2023 | 06:39 | 19:39 |
Friday, 15th September 2023 | 06:51 | 19:17 |
Saturday, 30th September 2023 | 07:04 | 18:54 |
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