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Seattle, Washington Weather, Forecast, Temperature and Precipitation - CLRSearch

Seattle, Washington Weather, Forecast, Temperature and Precipitation

Seattle, Washington Weather, Forecast, Temperature and Precipitation Statistics


2012 Weather Summary Seattle, WA Washington United States
Weather Index 0 0 100
Hail Index 0 1 100
Hurricane Index 0 0 100
Tornado Index 0 1 100
Wind Index 0 1 100
 
Annual Maximum Avg. Temperature 60 °F 59 °F N/A
Annual Minimum Avg. Temperature 46 °F 39 °F N/A
Annual Avg. Temperature 52.8 °F 48.9 °F N/A
Percent of Possible Sunshine 43 48 N/A
Mean Sky Cover (Sunrise to Sunset - Out of 10) 7 7 N/A
Mean Number of Days Clear (Out of 365 Days) 71 79 N/A
Mean Number of Days Rain (Out of 365 Days) 150 128 N/A
Mean Number of Days Snow (Out of 365 Days) 2 11 N/A
Avg. Annual Precipitation (Total Inches) 38" 32" N/A
Avg. Annual Snowfall (Total Inches) 7" 32" N/A
2012 Average Monthly Low Temperature Seattle, WA Washington United States
Avg. Annual Low Temperature 46 °F 39 °F N/A
Avg. January Low Temperature 35.17 °F 18.57 °F N/A
Avg. February Low Temperature 36.63 °F 21.45 °F N/A
Avg. March Low Temperature 38.41 °F 24.85 °F N/A
Avg. April Low Temperature 41.79 °F 29.48 °F N/A
Avg. May Low Temperature 46.81 °F 35.26 °F N/A
Avg. June Low Temperature 51.42 °F 41.52 °F N/A
Avg. July Low Temperature 54.43 °F 47.7 °F N/A
Avg. August Low Temperature 54.73 °F 48.2 °F N/A
Avg. September Low Temperature 51.08 °F 43.25 °F N/A
Avg. October Low Temperature 45.66 °F 33.94 °F N/A
Avg. November Low Temperature 39.78 °F 25.86 °F N/A
Avg. December Low Temperature 36.34 °F 19.11 °F N/A
2012 Average Monthly High Temperature Seattle, WA Washington United States
Avg. Annual High Temperature 60 °F 59 °F N/A
Avg. January High Temperature 46.09 °F 29.66 °F N/A
Avg. February High Temperature 50.14 °F 34.79 °F N/A
Avg. March High Temperature 54.14 °F 41.7 °F N/A
Avg. April High Temperature 59.23 °F 50.27 °F N/A
Avg. May High Temperature 65.43 °F 58.93 °F N/A
Avg. June High Temperature 70.16 °F 66.11 °F N/A
Avg. July High Temperature 75.29 °F 75.27 °F N/A
Avg. August High Temperature 74.8 °F 74.5 °F N/A
Avg. September High Temperature 69.66 °F 65.71 °F N/A
Avg. October High Temperature 60.49 °F 51.24 °F N/A
Avg. November High Temperature 51.8 °F 35.73 °F N/A
Avg. December High Temperature 46.74 °F 29.98 °F N/A
2012 Average Monthly Precipitation Seattle, WA Washington United States
Avg. Annual Precipitation 38" 32" N/A
Avg. January Precipitation 5.11" 6.27" N/A
Avg. February Precipitation 3.9" 4.7" N/A
Avg. March Precipitation 3.82" 3.18" N/A
Avg. April Precipitation 2.5" 1.88" N/A
Avg. May Precipitation 1.71" 1.26" N/A
Avg. June Precipitation 1.52" 1.36" N/A
Avg. July Precipitation 0.73" 0.64" N/A
Avg. August Precipitation 0.91" 0.58" N/A
Avg. September Precipitation 1.54" 1.21" N/A
Avg. October Precipitation 2.91" 2.12" N/A
Avg. November Precipitation 5.5" 5.44" N/A
Avg. December Precipitation 5.21" 6.36" N/A

Annual Heating Degree Days (HDD): A form of Degree Day used to estimate energy requirements for heating. Typically, heating degree days are calculated as how much colder the mean temperature at a location is than 65°F on a given day. For example, if a location experiences a mean temperature of 55°F on a certain day, there were 10 HDD that day because 65 - 55 = 10, according to the National Weather Service.

Annual Cooling Degree Days (CDD): A form of Degree Day used to estimate energy requirements for air conditioning or refrigeration. Typically, cooling degree days are calculated as how much warmer the mean temperature at a location is than 65°F on a given day. For example, if a location experiences a mean temperature of 75°F on a certain day, there were 10 CDD that day because 75 - 65 = 10, according to the National Weather Service.

Mean Sky Cover: Reflects the approximate amount that the sky is covered with clouds, sunrise to sunset on a scale of 0 to 10.

Index score: (100 = National Average) for an area is compared to the national average of 100. A score of 200 indicates twice the national average, while 50 indicates half the national average. Note: A higher Weather Index score represents better overall weather (higher number good). A higher Hail, Hurricane or Tornado Index means the chance of that weather event is higher (higher number bad).

Information is deemed reliable but not guaranteed. Demographic Information FAQ



Seattle, Washington Demographics Summary