TODAY DEC27
TEMPERATURE44
HUMIDITY96
PRESSURE100370
WIND COND. 1.6
  • 4940Sat80%50%
  • 4539Sun90%80%
  • 4536Mon60%
  • 4438Tue
  • 4440
daynightWeather update from FW6219 Mountlake Terrace at
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Weather Quick Facts

  • The highest monthly average temperature in Mountlake Terrace for July is 62.9 degrees
  • The lowest monthly average temperature in Mountlake Terrace for December is 39.5 degrees
  • The most monthly precipitation in Mountlake Terrace occurs in December with 8.6 inches
  • The air quality index in Mountlake Terrace is 7% worse than the national average
  • The pollution index in Mountlake Terrace is 1491% worse than the national average

Compare Mountlake Terrace, WA Weather

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      Mountlake Terrace 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"

      Mountlake Terrace 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.
      IndexMountlake TerraceWashingtonNational
      Air quality index453642
      Pollution index43,367,4004,541,8502,726,193

      Mountlake Terrace 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 Mountlake Terrace temperature with heat index

      Mountlake Terrace monthly precipitation with daily maximum

      Mountlake Terrace monthly snow depth with daily maximum

      Mountlake Terrace monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Keyport, WA3391864.0%
      Enetai, WA1,9931864.0%
      Bunk Foss, WA3,4884510.0%
      High Bridge, WA3,0654510.0%
      Mukilteo, WA21,4144510.0%
      Mountlake Terrace, WA21,3284510.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      La Porte, IN21,3283726.0%
      Montclair, VA21,329476.0%
      Cartersville, GA21,3314412.0%
      Selden, NY21,3384314.0%
      Bellview, FL21,3144118.0%
      Mountlake Terrace, WA21,3284510.0%
      Source: The Mountlake Terrace, 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.