Seattle C.O.

The tables below display average monthly climate and weather indicators in Seattle C.O. Washington. Temperature by: Fahrenheit / Centigrade Seattle C.O. Temperature Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual Avg. Temperature 5.2 6.8 8.1 10.2 13.4 16.3 18.5 18.7 16.0 11.9 7.9 5.3 11.6 Avg. Max Temperature 7.8 10.3 12.1 14.5 17.9 20.9 23.4 23.4 20.4 15.6 10.8 7.9 15.4 Avg. Min Temperature 2.4 3.3 4.2 5.9 8.8 11.8 13.6 14.0 11.6 8.3 5.0 2.8 7.7 Days with Max Temp of 32 C or Higher 0.0 0.0 0.0 0.0 < 0.5 < 0.5 1.0 < 0.5 < 0.5 0.0 0.0 0.0 1.0 Days with Min Temp Below Freezing 7.0 4.0 1.0 0.0 0.0 0.0 0.0 0.0 0.0 < 0.5 2.0 5.0 19.0     Seattle C.O. Heating and Cooling Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual Heating Degree Days 735 580 570 438 276 123 44.0 58.0 144 357 561 725 4611 Cooling Degree Days 0.0 0.0 0.0 0.0 0.0 15.0 54.0 80.0 18.0 0.0 0.0 0.0 167     Seattle C.O. Precipitation Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual Precipitation (inches) 5.3 4.0 3.8 2.5 1.8 1.6 0.8 1.2 1.9 3.2 5.7 6.0 38.0 Days with Precipitation 0.01 inch or More 18.0 15.0 17.0 14.0 11.0 9.0 5.0 6.0 8.0 11.0 18.0 18.0 151 Monthly Snowfall (inches) 2.9 0.9 0.6 0.0 < 0.05 0.0 0.0 0.0 0.0 < 0.05 0.7 2.2 7.3     Other Seattle C.O. Weather Indicators Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Annual Clear Days 3.0 3.0 4.0 5.0 7.0 7.0 12.0 10.0 9.0 5.0 3.0 3.0 71.0 Partly Cloudy Days 5.0 6.0 8.0 9.0 10.0 8.0 10.0 10.0 8.0 8.0 6.0 5.0 93.0 Cloudy Days 23.0 19.0 19.0 16.0 14.0 15.0 9.0 11.0 13.0 18.0 21.0 23.0 201 Percent of Possible Sunshine 28.0 34.0 42.0 47.0 52.0 49.0 63.0 56.0 53.0 37.0 28.0 23.0 43.0

Weather information for other cities in Washington • Olympia Weather • Quillayute Weather • Seattle Sea-tac Airport Weather • Spokane Weather • Walla Walla Weather • Yakima Weather