Seattle Weather History (WA)

Summary
  Temp.
(ºF)		 Relative Humidity
(Percentage)		 Extreme Temp.
(Days Per Month)		 Rain
(Inches) 		Cloudiness
(Days Per Month)
  Average A.M. P.M. Below
32º		 Above
90º 		Average Clear Partly
Cloudy		 Cloudy
January 41.3 82% 74% 7 0 5.4 3 5 23
February 44.3 80% 67% 4 0 4.0 3 6 19
March 46.6 83% 62% 1 0 3.8 4 8 19
April 50.4 84% 58% 0 0 2.5 5 9 16
May 56.1 84% 55% 0 N/A 1.8 7 10 14
June 61.4 83% 53% 0 N/A 1.6 7 8 15
July 65.3 82% 49% 0 1 0.9 12 10 9
August 65.7 84% 50% 0 N/A 1.2 10 10 11
September 60.8 86% 56% 0 N/A 1.9 9 8 13
October 53.5 88% 67% N/A 0 3.3 5 8 18
November 46.3 85% 75% 2 0 5.7 3 6 21
December 41.6 83% 78% 5 0 6.0 3 5 23
Annual 52.8 83% 62% 19 1 38.0 71 93 201


Average Temperature (ºF)
Jan. Feb. Mar. Apr. May. Jun. Jul. Aug. Sep. Oct. Nov. Dec.
41.3 44.3 46.6 50.4 56.1 61.4 65.3 65.7 60.8 53.5 46.3 41.6

Relative Humidity (Percentage)
Morning
Jan. Feb. Mar. Apr. May. Jun. Jul. Aug. Sep. Oct. Nov. Dec.
82% 80% 83% 84% 84% 83% 82% 84% 86% 88% 85% 83%
Afternoon
74% 67% 62% 58% 55% 53% 49% 50% 56% 67% 75% 78%

Rain (Inches)
Jan. Feb. Mar. Apr. May. Jun. Jul. Aug. Sep. Oct. Nov. Dec.
5.4 4.0 3.8 2.5 1.8 1.6 0.9 1.2 1.9 3.3 5.7 6.0

Cloudiness (Days Per Month)
  January February March
Clear 3 Days 3 Days 4 Days
Partly Cloudy 5 Days 6 Days 8 Days
Cloudy 23 Days 19 Days 19 Days
  April May June
Clear 5 Days 7 Days 7 Days
Partly Cloudy 9 Days 10 Days 8 Days
Cloudy 16 Days 14 Days 15 Days
  July August September
Clear 12 Days 10 Days 9 Days
Partly Cloudy 10 Days 10 Days 8 Days
Cloudy 9 Days 11 Days 13 Days
  October November December
Clear 5 Days 3 Days 3 Days
Partly Cloudy 8 Days 6 Days 5 Days
Cloudy 18 Days 21 Days 23 Days
  Clear Partly Cloudy Cloudy
 
Days Per Year 71 93 201


View Average Temperatures for all Cities Weather History by City and State
Custom Search