Seattle Average Weather by Day

Data and chart of the the average high and low temperature for every day of the year in Seattle, Washington, based on NOAA data.
Also see:
What's the hottest day of the year in Seattle?
On average, August 3 is the hottest day of the year Seattle, Washington. From 1991–2020, the average high temperature on August 3 was 78.0 °F and the average low was 57.3 °F.
What's the coldest day of the year in Seattle?
On average, January 2 is the coldest day of the year Seattle, Washington. From 1991–2020, the average high temperature on January 2 was 46.0 °F, and the average low was 36.4 °F.
Average Temperature by Day
  • Average temperatures from 1991–2020. Daily averages are a mean of the period from 14 days before to 14 days after, inclusive.
Day Average (°F)
High Low
January 1 46.0 36.4
January 2 46.0 36.4
January 3 46.0 36.4
January 4 46.1 36.4
January 5 46.1 36.5
January 6 46.2 36.6
January 7 46.2 36.6
January 8 46.3 36.7
January 9 46.4 36.9
January 10 46.6 36.9
January 11 46.7 37.0
January 12 46.7 37.0
January 13 46.8 37.0
January 14 46.9 37.0
January 15 47.0 37.1
January 16 47.1 37.1
January 17 47.1 37.2
January 18 47.2 37.3
January 19 47.3 37.4
January 20 47.4 37.4
January 21 47.6 37.5
January 22 47.6 37.4
January 23 47.7 37.5
January 24 47.8 37.5
January 25 47.8 37.4
January 26 47.9 37.4
January 27 48.0 37.4
January 28 48.1 37.4
January 29 48.3 37.5
January 30 48.4 37.5
January 31 48.5 37.6
February 1 48.7 37.6
February 2 48.7 37.6
February 3 48.8 37.6
February 4 48.9 37.6
February 5 48.9 37.6
February 6 49.0 37.6
February 7 49.0 37.5
February 8 49.1 37.5
February 9 49.1 37.4
February 10 49.1 37.4
February 11 49.2 37.4
February 12 49.2 37.3
February 13 49.2 37.2
February 14 49.3 37.2
February 15 49.4 37.2
February 16 49.5 37.2
February 17 49.6 37.3
February 18 49.6 37.3
February 19 49.7 37.3
February 20 49.8 37.3
February 21 49.8 37.3
February 22 49.9 37.3
February 23 50.1 37.4
February 24 50.2 37.5
February 25 50.4 37.7
February 26 50.5 37.7
February 27 50.6 37.8
February 28 50.7 37.9
March 1 50.8 38.0
March 2 50.9 38.0
March 3 51.0 38.0
March 4 51.2 38.1
March 5 51.3 38.2
March 6 51.6 38.3
March 7 51.7 38.4
March 8 51.9 38.5
March 9 52.0 38.5
March 10 52.2 38.7
March 11 52.4 38.8
March 12 52.6 38.9
March 13 52.8 39.1
March 14 52.9 39.2
March 15 53.1 39.3
March 16 53.3 39.4
March 17 53.5 39.6
March 18 53.6 39.6
March 19 53.8 39.7
March 20 53.9 39.7
March 21 54.1 39.8
March 22 54.2 40.0
March 23 54.4 40.1
March 24 54.6 40.2
March 25 54.7 40.3
March 26 54.8 40.4
March 27 54.9 40.5
March 28 55.1 40.5
March 29 55.2 40.6
March 30 55.3 40.7
March 31 55.4 40.7
April 1 55.6 40.8
April 2 55.8 41.0
April 3 55.9 41.1
April 4 56.1 41.2
April 5 56.3 41.4
April 6 56.5 41.5
April 7 56.7 41.6
April 8 56.9 41.8
April 9 57.1 41.9
April 10 57.3 42.1
April 11 57.5 42.2
April 12 57.8 42.4
April 13 57.9 42.5
April 14 58.0 42.6
April 15 58.2 42.7
April 16 58.5 42.9
April 17 58.7 43.1
April 18 58.9 43.3
April 19 59.2 43.5
April 20 59.4 43.6
April 21 59.6 43.8
April 22 59.8 43.9
April 23 60.0 44.0
April 24 60.2 44.1
April 25 60.5 44.2
April 26 60.7 44.4
April 27 61.0 44.6
April 28 61.3 44.8
April 29 61.7 45.0
April 30 62.0 45.2
May 1 62.2 45.4
May 2 62.4 45.6
May 3 62.7 45.8
May 4 62.9 46.0
May 5 63.1 46.2
May 6 63.2 46.4
May 7 63.4 46.6
May 8 63.6 46.8
May 9 63.8 46.9
May 10 64.1 47.1
May 11 64.3 47.3
May 12 64.5 47.5
May 13 64.8 47.7
May 14 65.0 47.9
May 15 65.2 48.1
May 16 65.3 48.2
May 17 65.6 48.4
May 18 65.8 48.6
May 19 66.0 48.8
May 20 66.3 49.0
May 21 66.5 49.1
May 22 66.6 49.4
May 23 66.8 49.5
May 24 67.0 49.8
May 25 67.1 49.9
May 26 67.2 50.0
May 27 67.2 50.2
May 28 67.3 50.3
May 29 67.4 50.4
May 30 67.5 50.5
May 31 67.5 50.6
June 1 67.6 50.6
June 2 67.7 50.7
June 3 67.8 50.8
June 4 68.0 51.0
June 5 68.2 51.1
June 6 68.5 51.2
June 7 68.6 51.4
June 8 68.6 51.5
June 9 68.8 51.6
June 10 68.9 51.7
June 11 69.2 51.9
June 12 69.4 52.0
June 13 69.7 52.2
June 14 69.9 52.3
June 15 70.0 52.5
June 16 70.3 52.6
June 17 70.4 52.7
June 18 70.6 52.9
June 19 70.7 53.0
June 20 70.9 53.1
June 21 71.0 53.2
June 22 71.3 53.3
June 23 71.5 53.4
June 24 71.8 53.6
June 25 72.2 53.8
June 26 72.4 53.9
June 27 72.7 54.1
June 28 73.0 54.2
June 29 73.3 54.4
June 30 73.5 54.6
July 1 73.8 54.8
July 2 74.0 54.9
July 3 74.3 55.1
July 4 74.4 55.2
July 5 74.6 55.3
July 6 74.8 55.4
July 7 75.0 55.6
July 8 75.2 55.8
July 9 75.4 55.9
July 10 75.5 56.0
July 11 75.7 56.1
July 12 75.9 56.2
July 13 76.1 56.2
July 14 76.3 56.3
July 15 76.4 56.4
July 16 76.6 56.5
July 17 76.7 56.5
July 18 76.9 56.6
July 19 77.0 56.6
July 20 77.2 56.7
July 21 77.4 56.8
July 22 77.5 56.9
July 23 77.5 57.0
July 24 77.5 57.0
July 25 77.5 57.0
July 26 77.5 57.0
July 27 77.5 57.1
July 28 77.6 57.1
July 29 77.7 57.1
July 30 77.8 57.1
July 31 77.8 57.2
August 1 77.9 57.2
August 2 78.0 57.2
August 3 78.0 57.3
August 4 78.0 57.2
August 5 78.0 57.2
August 6 78.0 57.2
August 7 77.9 57.1
August 8 77.8 57.1
August 9 77.7 57.1
August 10 77.5 57.0
August 11 77.4 57.0
August 12 77.3 56.9
August 13 77.2 56.9
August 14 77.1 56.8
August 15 77.0 56.8
August 16 76.9 56.8
August 17 76.7 56.8
August 18 76.5 56.7
August 19 76.3 56.6
August 20 76.2 56.5
August 21 76.1 56.4
August 22 76.1 56.4
August 23 76.0 56.3
August 24 75.8 56.2
August 25 75.6 56.1
August 26 75.5 56.0
August 27 75.3 55.9
August 28 75.1 55.8
August 29 74.9 55.7
August 30 74.7 55.5
August 31 74.5 55.4
September 1 74.2 55.3
September 2 73.9 55.1
September 3 73.6 55.0
September 4 73.3 54.9
September 5 73.1 54.8
September 6 72.8 54.6
September 7 72.6 54.5
September 8 72.4 54.4
September 9 72.2 54.2
September 10 72.0 54.1
September 11 71.7 53.9
September 12 71.4 53.7
September 13 71.2 53.5
September 14 71.1 53.4
September 15 70.9 53.2
September 16 70.6 53.1
September 17 70.3 52.9
September 18 69.9 52.6
September 19 69.5 52.5
September 20 69.2 52.3
September 21 68.9 52.0
September 22 68.6 51.8
September 23 68.3 51.7
September 24 67.9 51.5
September 25 67.5 51.3
September 26 67.0 51.0
September 27 66.6 50.8
September 28 66.2 50.6
September 29 65.9 50.3
September 30 65.6 50.1
October 1 65.3 49.9
October 2 65.0 49.6
October 3 64.7 49.4
October 4 64.3 49.2
October 5 64.1 49.0
October 6 63.7 48.8
October 7 63.3 48.6
October 8 62.9 48.4
October 9 62.5 48.2
October 10 62.1 47.9
October 11 61.7 47.7
October 12 61.2 47.5
October 13 60.7 47.2
October 14 60.3 47.0
October 15 59.9 46.7
October 16 59.6 46.5
October 17 59.3 46.3
October 18 59.0 46.1
October 19 58.7 45.9
October 20 58.4 45.6
October 21 58.0 45.4
October 22 57.6 45.1
October 23 57.4 44.9
October 24 57.1 44.7
October 25 56.9 44.6
October 26 56.6 44.4
October 27 56.3 44.2
October 28 56.0 44.0
October 29 55.7 43.8
October 30 55.5 43.7
October 31 55.2 43.5
November 1 55.0 43.3
November 2 54.7 43.2
November 3 54.4 42.9
November 4 54.2 42.7
November 5 53.9 42.5
November 6 53.6 42.3
November 7 53.3 42.0
November 8 53.0 41.8
November 9 52.7 41.6
November 10 52.5 41.4
November 11 52.2 41.2
November 12 52.0 41.0
November 13 51.8 40.8
November 14 51.6 40.6
November 15 51.3 40.4
November 16 51.0 40.3
November 17 50.8 40.2
November 18 50.5 40.0
November 19 50.3 39.8
November 20 50.1 39.6
November 21 49.8 39.4
November 22 49.6 39.2
November 23 49.2 39.0
November 24 49.0 38.8
November 25 48.8 38.6
November 26 48.6 38.5
November 27 48.4 38.3
November 28 48.3 38.1
November 29 48.1 38.0
November 30 47.9 37.8
December 1 47.7 37.7
December 2 47.5 37.6
December 3 47.4 37.5
December 4 47.2 37.3
December 5 47.0 37.3
December 6 47.0 37.2
December 7 46.9 37.2
December 8 46.8 37.1
December 9 46.7 37.0
December 10 46.6 37.0
December 11 46.5 36.8
December 12 46.3 36.7
December 13 46.2 36.7
December 14 46.2 36.7
December 15 46.2 36.6
December 16 46.1 36.5
December 17 46.0 36.5
December 18 46.0 36.5
December 19 46.0 36.5
December 20 46.0 36.5
December 21 46.0 36.5
December 22 46.0 36.5
December 23 46.0 36.4
December 24 46.0 36.5
December 25 46.0 36.5
December 26 46.1 36.5
December 27 46.0 36.5
December 28 46.0 36.5
December 29 46.0 36.5
December 30 46.0 36.5
December 31 46.0 36.4
Weather Station Details
Years Station Coordinates
1948–2024 Seattle Tacoma International Airport location
1894–1947 University of Washington location
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