TODAY MAR28
TEMPERATURE49
HUMIDITY76
PRESSURE
WIND COND.153 2
  • 5736Fri50%
  • 6037Sat
  • 6141Sun
  • 6544Mon
  • 6644Tue
daynightWeather update from SR18 INTERCHANGE ECHO LAKE at
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Weather Quick Facts

  • The highest monthly average temperature in Snoqualmie for August is 67.5 degrees
  • The lowest monthly average temperature in Snoqualmie for December is 40.6 degrees
  • The most monthly precipitation in Snoqualmie occurs in November with 5.7 inches
  • The air quality index in Snoqualmie is 7% worse than the national average
  • The pollution index in Snoqualmie is 1491% worse than the national average

Compare Snoqualmie, WA Weather

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      Snoqualmie 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°F48°F41°F4.7"
      February37°F51°F44°F3.2"
      March40°F55°F46°F4.5"
      April43°F61°F50°F2.9"
      May48°F68°F57°F2.1"
      June53°F73°F62°F1.6"
      July58°F80°F67°F0.5"
      August58°F80°F67°F0.9"
      September53°F73°F62°F1.8"
      October47°F62°F53°F3.9"
      November40°F53°F46°F5.7"
      December36°F47°F41°F4.5"

      Snoqualmie 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.
      IndexSnoqualmieWashingtonNational
      Air quality index453642
      Pollution index43,367,4004,541,8502,726,193

      Snoqualmie 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

      Snoqualmie air quality information

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

      Average monthly Snoqualmie temperature with heat index

      Snoqualmie monthly precipitation with daily maximum

      Snoqualmie monthly snow depth with daily maximum

      Snoqualmie monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Black Diamond, WA4,7034510.0%
      Hobart, WA7,0314510.0%
      Fall City, WA2,3574510.0%
      Mirrormont, WA4,1024510.0%
      Tanner, WA1,0904510.0%
      Snoqualmie, WA13,5504510.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Pottsville, PA13,5494216.0%
      Central Elgin, ON13,549n/a 
      Marietta, OH13,5513530.0%
      Bécancour, QC13,552n/a 
      Bay St. Louis, MS13,5394216.0%
      Snoqualmie, WA13,5504510.0%
      Source: The Snoqualmie, 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.