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Key findings

  • The highest monthly average temperature in Bellingham for July is 63 degrees
  • The lowest monthly average temperature in Bellingham for December is 38 degrees
  • The most monthly precipitation in Bellingham occurs in November with 5.2 inches
  • The air quality index in Bellingham is 32% better than the national average
  • The pollution index in Bellingham is 91% better than the national average

Compare Bellingham, WA Weather

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      Bellingham 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
      January33°F46°F39°F4.4"
      February35°F50°F41°F3.0"
      March38°F53°F45°F4.1"
      April41°F58°F49°F2.9"
      May46°F65°F55°F2.3"
      June51°F69°F59°F1.6"
      July54°F74°F63°F0.7"
      August54°F75°F63°F0.9"
      September49°F69°F58°F2.1"
      October43°F60°F51°F4.0"
      November38°F51°F44°F5.2"
      December33°F45°F38°F4.2"

      Bellingham 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.
      IndexBellinghamWashingtonNational
      Air quality index343650
      Pollution index480,9258,596,9895,066,862

      Bellingham air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality277
      Days with moderate air quality78
      Days w/ poor A.Q. for sensitive groups10
      Days with unhealthy air quality0

      Bellingham air quality information

      PollutantTotal
      Arsenic0.000%
      Benzene0.010%
      Carbon Tetrachloride0.001%
      Lead0.040%
      Mercury0.000%

      Average monthly Bellingham temperature with heat index

      Bellingham monthly precipitation with daily maximum

      Bellingham monthly snow depth with daily maximum

      Bellingham monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Edison, WA1352452%
      Birch Bay, WA8,1073432%
      Everson, WA2,5553432%
      Marietta-Alderwood, WA4,4923432%
      Custer, WA4483432%
      Bellingham, WA84,4623432%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Bend, OR84,4162060%
      Edinburg, TX84,3994216%
      Trenton, NJ84,5594118%
      Riverview, FL84,5904314%
      Champaign, IL84,6724216%
      Bellingham, WA84,4623432%
      Source: The Bellingham, 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.