TODAY APR25
TEMPERATURE52
HUMIDITY100
PRESSURE101080
WIND COND.
  • 5947Fri90%60%
  • 5747Sat60%70%
  • 5742Sun80%
  • 5640Mon
  • 5942Tue
daynightWeather update from Pierce County-Thun Field at
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Weather Quick Facts

  • The highest monthly average temperature in Sumner for July is 65.3 degrees
  • The lowest monthly average temperature in Sumner for December is 38.2 degrees
  • The most monthly precipitation in Sumner occurs in November with 8.2 inches
  • The air quality index in Sumner is 7% worse than the national average
  • The pollution index in Sumner is 549% worse than the national average

Compare Sumner, WA Weather

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      Sumner 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
      January33°F47°F39°F7.4"
      February33°F51°F41°F4.9"
      March36°F55°F44°F6.1"
      April38°F60°F48°F4.0"
      May44°F67°F55°F4.5"
      June49°F72°F60°F3.0"
      July52°F80°F65°F1.5"
      August52°F80°F65°F3.4"
      September48°F73°F60°F4.4"
      October42°F62°F51°F6.3"
      November36°F52°F44°F8.2"
      December32°F46°F38°F6.9"

      Sumner 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.
      IndexSumnerWashingtonNational
      Air quality index453642
      Pollution index17,693,8004,541,8502,726,193

      Sumner 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

      Sumner air quality information

      PollutantTotal
      Arsenic0.010%
      Benzene0.300%
      Carbon Tetrachloride0.050%
      Lead0.110%
      Mercury0.020%

      Average monthly Sumner temperature with heat index

      Sumner monthly precipitation with daily maximum

      Sumner monthly snow depth with daily maximum

      Sumner monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Dash Point, WA1,0081864.0%
      Ruston, WA1,3291864.0%
      Tacoma, WA215,7661864.0%
      Browns Point, WA9611864.0%
      Clover Creek, WA6,8933040.0%
      Sumner, WA10,2464510.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Doraville, GA10,244524.0%
      Shelburne, ON10,249n/a 
      Somers Point, NJ10,2503726.0%
      Belle Chasse, LA10,2414510.0%
      Canandaigua, NY10,2413726.0%
      Sumner, WA10,2464510.0%
      Source: The Sumner, 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.