TODAY DEC29
TEMPERATURE44
HUMIDITY89
PRESSURE100640
WIND COND.20 7.6
  • 4640Sun90%80%
  • 4636Mon60%30%
  • 4538Tue20%70%
  • 4639
  • 4743Thu
daynightWeather update from Seattle, Seattle-Tacoma International Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Des Moines for August is 66.5 degrees
  • The lowest monthly average temperature in Des Moines for December is 40.6 degrees
  • The most monthly precipitation in Des Moines occurs in November with 7.1 inches
  • The air quality index in Des Moines is 7% worse than the national average
  • The pollution index in Des Moines is 60% better than the national average

Compare Des Moines, WA Weather

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      Des Moines 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°F48°F42°F5.6"
      February37°F51°F43°F3.7"
      March39°F55°F46°F5.1"
      April42°F60°F50°F3.2"
      May47°F68°F56°F2.2"
      June52°F72°F61°F1.5"
      July56°F80°F66°F0.6"
      August56°F80°F66°F1.1"
      September53°F73°F61°F1.9"
      October46°F62°F53°F4.5"
      November40°F53°F46°F7.1"
      December35°F47°F41°F6.1"

      Des Moines 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.
      IndexDes MoinesWashingtonNational
      Air quality index453642
      Pollution index1,081,4304,541,8502,726,193

      Des Moines 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
      Arsenic0.000%
      Benzene0.010%
      Carbon Tetrachloride0.000%
      Lead0.000%
      Mercury0.000%

      Average monthly Des Moines temperature with heat index

      Des Moines monthly precipitation with daily maximum

      Des Moines monthly snow depth with daily maximum

      Des Moines monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Maplewood, WA5,1351864.0%
      Manchester, WA6,0501864.0%
      Bremerton, WA41,2581864.0%
      Purdy, WA1,5311864.0%
      Wollochet, WA7,1931864.0%
      Des Moines, WA31,9834510.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Kaysville, UT31,9574510.0%
      Ferry Pass, FL32,0164118.0%
      Los Gatos, CA31,9434314.0%
      Bangor, ME32,0293138.0%
      Dover, NH31,9223726.0%
      Des Moines, WA31,9834510.0%
      Source: The Des Moines, 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.