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Key findings

  • The highest monthly average temperature in Shoreline for July is 62.9 degrees
  • The lowest monthly average temperature in Shoreline for December is 39.5 degrees
  • The most monthly precipitation in Shoreline occurs in December with 8.6 inches
  • The air quality index in Shoreline is 10% better than the national average
  • The pollution index in Shoreline is 1491% worse than the national average

Compare Shoreline, WA Weather

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      Shoreline Average Temperature

      In the event that the weather data was unavailable for this city, estimates based upon nearby cities were used.
      MonthTemp. (min)Temp. (max)Temp. (avg)Precipitation
      January35°F45°F40°F2.5"
      February36°F50°F42°F2.8"
      March41°F55°F47°F3.5"
      April43°F58°F49°F3.5"
      May48°F65°F55°F3.0"
      June51°F66°F57°F2.2"
      July55°F74°F63°F2.0"
      August55°F74°F62°F1.7"
      September50°F66°F57°F2.8"
      October46°F59°F51°F3.4"
      November38°F48°F43°F4.8"
      December35°F45°F39°F8.6"

      Shoreline air quality index & pollution index

      In the event that the air quality/pollution data was unavailable for this city, estimates based upon nearby cities were used.
      IndexShorelineWashingtonNational
      Air quality index453650
      Pollution index43,367,4004,541,8502,726,193

      Shoreline air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality236
      Days with moderate air quality127
      Days w/ poor A.Q. for sensitive groups2
      Days with unhealthy air quality0

      Shoreline air quality information

      PollutantTotal
      Arsenic0.020%
      Benzene0.790%
      Carbon Tetrachloride0.120%
      Lead0.210%
      Mercury0.180%

      Average monthly Shoreline temperature with heat index

      Shoreline monthly precipitation with daily maximum

      Shoreline monthly snow depth with daily maximum

      Shoreline monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Keyport, WA4421864.0%
      Enetai, WA2,2341864.0%
      Manchester, WA5,2421864.0%
      Navy Yard City, WA3,1311864.0%
      Lofall, WA2,2571864.0%
      Shoreline, WA55,0214510.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Dollard-Des Ormeaux, QC55,066n/a 
      West Haven, CT54,9724118.0%
      Hendersonville, TN55,0734510.0%
      Paramount, CA54,9417244.0%
      Port Arthur, TX54,9134510.0%
      Shoreline, WA55,0214510.0%
      Source: The Shoreline, WA weather data displayed above is derived from the NOAA (National Oceanic and Atmospheric). Air quality and pollution data is derived from the EPA (United States Environmental Protection Agency). Air quality and pollution levels measured in a particular area may not be representative of the entire county.