CLIMATE CHARTS

Seattle Urban Site, Washington

Latitude: 47.6500 Longitude: -122.3000

Elevation: 19 feet (5.8 meters)

Seattle Urban Site, Washington Temperature Chart Daily average maximum and minimum temperatures for Seattle Urban Site, Washington Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec High & Low Temperature °F  °C -30 -34.4 -20 -28.9 -10 -23.3 0 -17.8 10 -12.2 20 -6.7 30 -1.1 40 4.4 50 10.0 60 15.6 70 21.1 80 26.7 90 32.2 100 37.8 110 43.3 Seattle Urban Site, Washington Precipitation Chart Precipitation chart for Seattle Urban Site, Washington Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Precipitation In. Cm. 0.00 0.00 0.10 0.25 0.20 0.51 0.30 0.76 0.40 1.02 0.50 1.27 0.60 1.52 0.70 1.78 0.80 2.03 0.90 2.29 1.00 2.54 Daylight Chart for SEATTLE URBAN SITE, WA Daylight chart for SEATTLE URBAN SITE, WA. Latitude 47.7. Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec Sunrise/Sunset Daylight NOON NOON 0 0 2 2 4 4 6 6 8 8 10 10 12 12 14 2 16 4 18 6 20 8 22 10 24 12

Monthly Data Table for Seattle Urban Site, Washington

Imperial Units
Statistic Units Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum Temperature °F 48.6 51.4 55.4 59.9 65.8 70.7 75.8 76.2 70.8 60.7 52.4 46.9
Minimum Temperature °F 37.3 37.1 39.7 42.9 48.8 53.3 56.5 57.0 53.1 46.8 40.6 36.0
Heating Degree Days °F 684 581 541 408 244 110 31 25 112 349 555 730
Cooling Degree Days °F 0 0 0 0 5 20 67 75 21 0 0 0
Precipitation in. 5.47 3.52 3.85 2.79 2.01 1.57 0.85 0.94 1.30 3.38 5.98 6.06

Metric Units
Statistic Units Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Maximum Temperature °C 9.2 10.8 13.0 15.5 18.8 21.5 24.3 24.6 21.6 15.9 11.3 8.3
Minimum Temperature °C 2.9 2.8 4.3 6.1 9.3 11.8 13.6 13.9 11.7 8.2 4.8 2.2
Heating Degree Days °C 380 323 301 227 136 61 17 14 62 194 308 406
Cooling Degree Days °C 0 0 0 0 3 11 37 42 12 0 0 0
Precipitation cm. 13.89 8.94 9.78 7.09 5.11 3.99 2.16 2.39 3.30 8.59 15.19 15.39
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