Measurements:
°C
°F
Olympia
58°F
E 3 mph
Feels like: 58°F
Precip: 20%
World Resorts USA Olympia Weather September Weather in Olympia

Olympia Weather: September

Average Day Temperature: 72.6°F
Average Night Temperature: 55.2°F
Number of Sunny Days: 12 days
Sunshine Hours: 11.7 - 13.3 hours
Number of Rainy Days: 1 day
Precipitation Totals: 0.7 in

Air Temperature in September, °F

Select Year: 2026 2025 2024

The highest day temperature in September 2026 was 80°F. The lowest night temperature was 43°F. The average values for day and night temperatures during September were 68.1°F и 51.5°F respectivly.

Sunny, Cloudy and Gloomy days

You can expect various weather conditions during September. Be ready for sunny, cloudy or even gloomy days.

Precipitation Totals in September, in

Precipitation total in September for Olympia is 0.7 in. It makes september one of the least rainy months of the year.

Wind Speed in September, mph

The average wind speed in September is 4.1 mph. This value is relatively stable throughout the year.

Average Sunny Hours Per Day

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Olympia in September is 7.3 hours.

Best Time to Visit Olympia
The most sunny months:
July 19 days
August 17 days
June 12 days
The most warm months:
August 79.9 °F
July 79.6 °F
September 72.6 °F
The most cold months:
December 43.5 °F
January 43.5 °F
February 44.2 °F
The most rainy months:
January 6 days
November 6 days
December 5 days
The most windy months:
February 5 mph
December 5 mph
November 5 mph

Olympia on the Weather Map

USA Resorts:
NAME
F°
Boston +52
Chicago +58
Hawaii +80
Houston +82
Las Vegas +82
Los Angeles +96
Maui +72
Miami +86
Myrtle Beach +68
New York +56
San Diego +86
San Francisco +66
Santa Monica +88
Sarasota +80
Washington +58
24 Hours Weather Forecast
Olympia
Local time: 21:33
06 oct, tuesday
0000 54°F
SE
2 mph
0300 52°F
S
1 mph
0600 52°F
S
2 mph
0900 56°F
SW
3 mph
1200 64°F
SW
3 mph
1500 74°F
S
5 mph
1800 68°F
SW
4 mph
2100 52°F
SW
4 mph