Weather in Seattle: September
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Average day temperature: | 70.1°F |
| Average night temperature: | 56.7°F | |
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Number of sunny days: | 14 days |
| Day length: | 11.7 - 13.4 hours | |
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Number of rainy days: | 2 days |
| Precipitation totals: | 1.1 in. | |
| more information | ||
14 days
forecast
forecast
| Seattle |
weather in
October
October
| Seattle |
Air temperature in September, °F
Show year:
2024
2023
2022
The highest day temperature during September of 2024 was 86°F. At the same time the lowest night temperature was 49°F. Day and night temperature averages during September were 69.1°F and 56.7°F.
Sunny, partly cloudy and cloudy days
Number of sunny, partly cloudy and cloudy days in September is almost equal.
Precipitation total in September, in.
Precipitation total value in Seattle in September is 1.1 in. Other months of the year show relatively similar values.
Wind speed in September, mph
The average wind speed value in September is 4.7 mph The wind's strength is relatively same during the whole year.
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: 7.0.
Best time for vacation in Seattle
Seattle on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Seattle
Local time: 00:42
December 22, sunday
0300
48°F
NW
4 mph
4 mph
0600
46°F
NW
3 mph
3 mph
0900
46°F
NW
4 mph
4 mph
1200
48°F
W
3 mph
3 mph
1500
46°F
NW
2 mph
2 mph
1800
48°F
NW
4 mph
4 mph
2100
48°F
NW
5 mph
5 mph
December 23, monday
0000
48°F
N
7 mph
7 mph
