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Napa climate
Typical historical weather for Napa, United States, averaged across 10 years of hourly climate data. Pick a date for a specific day.
Want today's actual conditions instead? See the current forecast for Napa.
Annual average
15.9°C
across all months
Warmest month
29.8°C
Aug average high
Coolest month
5.7°C
Dec average low
Annual rainfall
589mm
total per year
Monthly averages
Average daily high/low temperature (band) and monthly rainfall (bars).
● Avg high● Avg low▮ Rainfall
Records on file
Hottest day
44.6°C
6 September 2022
Coldest day
-1.6°C
2 January 2022
Wettest day
102.9mm
24 October 2021
Windiest day
7.2m/s
4 February 2024
See the detail: Napa on 24 October 2021.