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Key findings

  • The highest monthly average temperature in Duvall for July is 62.9 degrees
  • The lowest monthly average temperature in Duvall for December is 39.5 degrees
  • The most monthly precipitation in Duvall occurs in December with 8.6 inches
  • The air quality index in Duvall is 10% better than the national average
  • The pollution index in Duvall is 756% worse than the national average

Compare Duvall, WA Weather

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      Duvall 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"

      Duvall 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.
      IndexDuvallWashingtonNational
      Air quality index453650
      Pollution index43,367,4008,596,9895,066,862

      Duvall 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

      Duvall air quality information

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

      Average monthly Duvall temperature with heat index

      Duvall monthly precipitation with daily maximum

      Duvall monthly snow depth with daily maximum

      Duvall monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Cathcart, WA2,6654510%
      Issaquah, WA34,7284510%
      Gold Bar, WA2,0264510%
      Lake Forest Park, WA13,1564510%
      Eastmont, WA21,4034510%
      Duvall, WA7,5344510%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      New Prague, MN7,534468%
      Winsted, CT7,5353726%
      Iron Mountain, MI7,5353628%
      Page, AZ7,5324412%
      Monessen, PA7,5305612%
      Duvall, WA7,5344510%
      Source: The Duvall, 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.