TODAY NOV09
TEMPERATURE54
HUMIDITY80
PRESSURE101530
WIND COND.97
  • 5546Sat60%90%
  • 5746Sun80%100%
  • 5345100%100%
  • 5244Tue
  • 5344Wed
daynightWeather update from DW2629 Snohomish at
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Weather Quick Facts

  • The highest monthly average temperature in Snohomish for August is 63.5 degrees
  • The lowest monthly average temperature in Snohomish for December is 39.4 degrees
  • The most monthly precipitation in Snohomish occurs in November with 5.7 inches
  • The air quality index in Snohomish is 7% worse than the national average
  • The pollution index in Snohomish is 1491% worse than the national average

Compare Snohomish, WA Weather

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      Snohomish 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
      January36°F46°F41°F3.8"
      February37°F49°F42°F2.7"
      March39°F52°F45°F4.4"
      April42°F57°F48°F2.8"
      May47°F64°F54°F2.2"
      June51°F68°F58°F1.8"
      July55°F74°F63°F0.7"
      August56°F75°F63°F0.9"
      September53°F69°F59°F2.0"
      October47°F59°F52°F3.6"
      November40°F51°F45°F5.7"
      December35°F44°F39°F4.9"

      Snohomish 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.
      IndexSnohomishWashingtonNational
      Air quality index453642
      Pollution index43,367,4004,541,8502,726,193

      Snohomish air quality

      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

      Air quality details

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

      Average monthly Snohomish temperature with heat index

      Snohomish monthly precipitation with daily maximum

      Snohomish monthly snow depth with daily maximum

      Snohomish monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Canyon Creek, WA3,2182452.0%
      Lake Cassidy, WA2,8542452.0%
      Kayak Point, WA1,5002452.0%
      Granite Falls, WA3,9612452.0%
      North Marysville, WA1382452.0%
      Snohomish, WA10,1414510.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Mentone, CA10,1418978.0%
      Waynesville, NC10,1454412.0%
      Wood River, IL10,149548.0%
      Lantana, TX10,152512.0%
      Fountain Inn, SC10,127468.0%
      Snohomish, WA10,1414510.0%
      Source: The Snohomish, 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.