Weather in Napa: September
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Average day temperature: | 85.3°F |
| Average night temperature: | 58.4°F | |
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Number of sunny days: | 25 days |
| Day length: | 11.8 - 13.0 hours | |
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Number of rainy days: | 0 days |
| Precipitation totals: | 0.1 in. | |
| more information | ||
14 days
forecast
forecast
| Napa |
weather in
October
October
| Napa |
Air temperature in September, °F
Show year:
2024
2023
2022
The highest day temperature during September of 2024 was 97°F. At the same time the lowest night temperature was 51°F. Day and night temperature averages during September were 81.0°F and 57.0°F.
Sunny, partly cloudy and cloudy days
Mostly all days in September are sunny but cloudy days are also possible.
Precipitation total in September, in.
Precipitation total value in Napa in September is 0.1 in. Other months of the year show relatively similar values.
Wind speed in September, mph
The average wind speed value in September is 4.4 mph
Average sunny hours
This chart shows average number of hours during the day when sunlight can reach the ground. It depends on day length and cloudiness during the day. The average number of sunny hours in September is: 10.8.
Best time for vacation in Napa
Napa on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Napa
Local time: 00:56
December 22, sunday
0300
52°F
W
2 mph
2 mph
0600
52°F
W
4 mph
4 mph
0900
52°F
W
4 mph
4 mph
1200
54°F
W
3 mph
3 mph
1500
57°F
W
2 mph
2 mph
1800
57°F
SW
2 mph
2 mph
2100
57°F
NW
3 mph
3 mph
December 23, monday
0000
57°F
N
2 mph
2 mph
