Weather in Seattle: September
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Average day temperature: | 70.2°F |
| Average night temperature: | 56.7°F | |
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Number of sunny days: | 15 days |
| Day length: | 11.7 - 13.4 hours | |
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Number of rainy days: | 2 days |
| Precipitation totals: | 1.2 in. | |
| more information | ||
14 days
forecast
forecast
| Seattle |
weather in
October
October
| Seattle |
Air temperature in September, °F
Show year:
2023
2022
2021
The highest day temperature during September of 2023 was 80°F. At the same time the lowest night temperature was 46°F. Day and night temperature averages during September were 67.8°F and 57.0°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 1.2 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: 7.2.
Best time for vacation in Seattle
Seattle on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Seattle
Local time: 06:05
April 20, saturday
0900
54°F
NW
2 mph
2 mph
1200
66°F
N
6 mph
6 mph
1500
63°F
NE
17 mph
17 mph
1800
52°F
N
11 mph
11 mph
2100
46°F
N
14 mph
14 mph
April 21, sunday
0000
43°F
NE
10 mph
10 mph
0300
43°F
NE
6 mph
6 mph
0600
39°F
N
4 mph
4 mph
