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Napa weather in September 2021
Get the latest coronavirus (Covid-19) updates for California with current travel advice and statistics on new cases per 100,000 and vaccine.
- 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
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The September weather guide for Napa, California 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.
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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.
Metric (°C / mm) | Imperial (°F / inches)
Napa sunrise & sunset times for September 2021
Browse the sunrise and sunset times for Napa in September 2021. Select a month to view Napa sunrise & sunset times for the next 12 months.
JanFebMarAprMayJunJulAugSepOctNovDec
| Date | Sunrise times | Sunset times |
|---|---|---|
| Wednesday, 1st September 2021 | 06:39 | 19:38 |
| Wednesday, 15th September 2021 | 06:51 | 19:17 |
| Thursday, 30th September 2021 | 07:04 | 18:53 |
- Save 20% on COVID-19 Fit to Fly test & travel certificate
- Home COVID-19 PCR test with free express delivery
- Receive online results within 24-72 hours once test at lab
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