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Seattle, WA 98115 Weather, Forecast, Temperature and Precipitation

Seattle, WA 98115 Weather Related Indexes Graph

2010 Weather Summary Seattle, WA 98115 Washington United States
Weather Index 146 72 100
Hail Index 0 1 100
Hurricane Index 0 0 100
Tornado Index 0 2 100
 
Annual Maximum Avg. Temperature 60.0 °F 59.0 °F N/A
Annual Minimum Avg. Temperature 46.0 °F 39.0 °F N/A
Annual Avg. Temperature 52.8 °F 48.9 °F N/A
Annual Heating Degree Days (Tot Degrees < 65) 4,611 6,137 N/A
Annual Cooling Degree Days (Tot Degrees > 65) 167 296 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) 38.00" 32.00" N/A
Avg. Annual Snowfall (Total Inches) 7.00" 32.00" N/A

The data for Seattle, WA 98115 may also contain data for the following areas: Seattle

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, WA 98115 2010 Avg. Monthly Low Temperatures

2010 Avg. Monthly Low Temperature Seattle, WA 98115 Washington United States
Avg. Annual Low Temperature 43.3 °F 35.5 °F N/A
Avg. January Low Temperature 34.2 °F 25.2 °F N/A
Avg. February Low Temperature 35.7 °F 27.2 °F N/A
Avg. March Low Temperature 37.4 °F 29.2 °F N/A
Avg. April Low Temperature 40.8 °F 32.5 °F N/A
Avg. May Low Temperature 45.7 °F 37.0 °F N/A
Avg. June Low Temperature 50.2 °F 42.2 °F N/A
Avg. July Low Temperature 53.3 °F 46.6 °F N/A
Avg. August Low Temperature 53.5 °F 46.8 °F N/A
Avg. September Low Temperature 49.9 °F 43.7 °F N/A
Avg. October Low Temperature 44.6 °F 37.5 °F N/A
Avg. November Low Temperature 38.9 °F 31.3 °F N/A
Avg. December Low Temperature 35.5 °F 26.6 °F N/A

The data for Seattle, WA 98115 may also contain data for the following areas: Seattle

Information is deemed reliable but not guaranteed. Demographic Information FAQ

Seattle, WA 98115 2010 Avg. Monthly High Temperatures

2010 Avg. Monthly High Temperature Seattle, WA 98115 Washington United States
Avg. Annual High Temperature 59.6 °F 52.5 °F N/A
Avg. January High Temperature 45.0 °F 35.1 °F N/A
Avg. February High Temperature 49.0 °F 39.5 °F N/A
Avg. March High Temperature 53.0 °F 44.3 °F N/A
Avg. April High Temperature 58.4 °F 51.3 °F N/A
Avg. May High Temperature 64.8 °F 58.1 °F N/A
Avg. June High Temperature 69.6 °F 64.0 °F N/A
Avg. July High Temperature 74.8 °F 70.8 °F N/A
Avg. August High Temperature 74.7 °F 70.4 °F N/A
Avg. September High Temperature 69.4 °F 65.2 °F N/A
Avg. October High Temperature 60.2 °F 53.7 °F N/A
Avg. November High Temperature 50.9 °F 41.7 °F N/A
Avg. December High Temperature 45.8 °F 35.4 °F N/A

The data for Seattle, WA 98115 may also contain data for the following areas: Seattle

Information is deemed reliable but not guaranteed. Demographic Information FAQ

Seattle, WA 98115 2010 Avg. Monthly Precipitation

2010 Avg. Monthly Precipitation Seattle, WA 98115 Washington United States
Avg. Annual Precipitation 37.69" 104.70" N/A
Avg. January Precipitation 5.07" 15.65" N/A
Avg. February Precipitation 4.00" 10.98" N/A
Avg. March Precipitation 3.79" 10.21" N/A
Avg. April Precipitation 2.81" 7.27" N/A
Avg. May Precipitation 2.10" 6.08" N/A
Avg. June Precipitation 1.68" 4.71" N/A
Avg. July Precipitation 0.98" 2.54" N/A
Avg. August Precipitation 1.10" 2.27" N/A
Avg. September Precipitation 1.71" 4.68" N/A
Avg. October Precipitation 3.14" 8.19" N/A
Avg. November Precipitation 6.04" 16.51" N/A
Avg. December Precipitation 5.27" 15.63" N/A

The data for Seattle, WA 98115 may also contain data for the following areas: Seattle

Information is deemed reliable but not guaranteed. Demographic Information FAQ