Measurements:
°C
°F
Washington
36°F
E 7 mph
Feels like: 30°F
Precip: 0%
World Resorts USA Washington Weather September Weather in Washington

Washington Weather: September

Average Day Temperature: 82.1°F
Average Night Temperature: 67.7°F
Sea Water Temperature: 76.5°F
Number of Sunny Days: 14 days
Sunshine Hours: 11.8 - 13.0 hours
Number of Rainy Days: 5 days
Precipitation Totals: 3.2 in

Air Temperature in September, °F

Select Year: 2019 2018 2017

The highest day temperature in September 2019 was 97°F. The lowest night temperature was 60°F. The average values for day and night temperatures during September were 86.0°F и 71.3°F respectivly.

Washington Water Sea Temperature in September, °F

Select Year: 2019 2018 2017

The average sea surface temperature in September 2019 for Washington was 79.8°F. The maximum and minimum values were 77.0°F and 83.8°F respectively.

Sunny, Cloudy and Gloomy days

Most of the days in September are sunny but you can also expect cloudy and gloomy days.

Precipitation Totals in September, in

Precipitation total in September for Washington is 3.2 in.

Wind Speed in September, mph

The average wind speed in September is 6.6 mph. It makes September one of the most windless months of the year for Washington.

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 Washington in September is 7.4 hours.

Best Time to Visit Washington
The most sunny months:
July 17 days
June 16 days
August 15 days
The most warm months:
July 93.1 °F
August 90.4 °F
June 86.1 °F
Warmest sea temperature:
July 82.9 °F
August 81.6 °F
June 77.2 °F
The most cold months:
January 38.3 °F
February 42.7 °F
December 45.6 °F
The most rainy months:
May 7 days
August 6 days
June 6 days
The most windy months:
April 10 mph
March 9 mph
February 9 mph

Washington on the Weather Map

USA Resorts:
NAME
Boston +34
Chicago +28
Hawaii +78
Honolulu +76
Houston +72
Jacksonville +60
Las Vegas +56
Los Angeles +56
Miami +74
New Orleans +44
New York +38
San Diego +58
San Francisco +52
San Jose +48
Washington +36
24 Hours Weather Forecast
Washington
Local time: 00:54
27 jan, monday
0300 36°F
E
7 mph
0600 34°F
NE
6 mph
0900 36°F
NE
7 mph
1200 42°F
E
9 mph
1500 46°F
E
11 mph
1800 44°F
SE
10 mph
2100 38°F
SE
9 mph
28 jan, tuesday
0000 34°F
SE
10 mph