Weather in Olympia: September
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Average day temperature: | 70.5°F |
| Average night temperature: | 54.7°F | |
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Number of sunny days: | 12 days |
| Day length: | 11.7 - 13.3 hours | |
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Number of rainy days: | 1 day |
| Precipitation totals: | 0.7 in. | |
| more information | ||
14 days
forecast
forecast
| Olympia |
weather in
October
October
| Olympia |
Air temperature in September, °F
Show year:
2026
2025
2024
The highest day temperature during September of 2026 was 77°F. At the same time the lowest night temperature was 43°F. Daily and nightly averages during September were 66.8°F and 51.3°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 Olympia in September is 0.7 in. Other months of the year show relatively similar values.
Wind speed in September, mph
The average wind speed value in September is 4.1 mph It makes September lest windy month of the 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 Olympia
Olympia on a weather map
Places in USA:
Name
°F
24 Hours Forecast
Olympia
Local time: 02:56
September 29, tuesday
0300
54°F
N
6 mph
6 mph
0600
54°F
N
7 mph
7 mph
0900
54°F
N
8 mph
8 mph
1200
52°F
N
8 mph
8 mph
1500
52°F
N
7 mph
7 mph
1800
55°F
NE
7 mph
7 mph
2100
52°F
NE
6 mph
6 mph
September 30, wednesday
0000
48°F
NE
4 mph
4 mph
