Please click on any column to get detailed information about Napa weather in that particular month. You will get daily weather information for that month for the last several years.
Day & Night air temperature, °F
The warmest month in Napa is august. The average daily temp is 86.9°F. The average nightly temp is 59.4°F.
Precipitation total, in.
Number of rainy days
This chart shows averages for the last three years. It shows medium and heavy rains only, it doesn't show light rains.
Wind speed, mph
Sunny, partly cloudy and cloudy days
Average sunny hours
Sunny hours are calculated based on the average daily number of hours while sunlight can reach the ground. It depends on day length and cloudiness during the day.
* Charts above show average data for the last 3 years.
Best time for vacation in Napa
Napa on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Napa
Local time: 13:50
August 23, sunday
1500
90°F
NE
7 mph
7 mph
1800
81°F
NE
6 mph
6 mph
2100
66°F
NE
4 mph
4 mph
August 24, monday
0000
59°F
NE
4 mph
4 mph
0300
55°F
E
4 mph
4 mph
0600
55°F
NE
3 mph
3 mph
0900
63°F
NE
4 mph
4 mph
1200
79°F
NE
6 mph
6 mph
