TODAY MAY28
TEMPERATURE58
HUMIDITY62
PRESSURE101420
WIND COND.260 9.4
  • 7540Tue
  • 6740Wed
  • 7343Thu
  • 7752Fri
  • 7849Sat
daynightWeather update from Yakima Air Terminal - McAllister Field at
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Weather Quick Facts

  • The highest monthly average temperature in Zillah for July is 75.7 degrees
  • The lowest monthly average temperature in Zillah for December is 29 degrees
  • The most monthly precipitation in Zillah occurs in December with 1.5 inches
  • The air quality index in Zillah is 10% better than the national average
  • The pollution index in Zillah is 74% better than the national average

Compare Zillah, WA Weather

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      Zillah 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
      January22°F41°F31°F1.1"
      February25°F50°F37°F0.8"
      March30°F59°F44°F0.8"
      April34°F67°F51°F0.5"
      May42°F77°F60°F1.0"
      June48°F83°F67°F0.4"
      July55°F93°F76°F0.1"
      August53°F92°F73°F0.2"
      September44°F82°F63°F0.4"
      October36°F67°F50°F0.8"
      November27°F52°F39°F0.9"
      December20°F40°F29°F1.5"

      Zillah 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.
      IndexZillahWashingtonNational
      Air quality index383642
      Pollution index697,9424,541,8502,726,193

      Zillah air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality227
      Days with moderate air quality128
      Days w/ poor A.Q. for sensitive groups10
      Days with unhealthy air quality0

      Zillah air quality information

      PollutantTotal
      Arsenic0.020%
      Benzene0.004%
      Carbon Tetrachloride0.001%
      Lead0.010%
      Mercury0.010%

      Average monthly Zillah temperature with heat index

      Zillah monthly precipitation with daily maximum

      Zillah monthly snow depth with daily maximum

      Zillah monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Donald, WA03824.0%
      Sunnyside, WA16,7033824.0%
      Terrace Heights, WA8,9173824.0%
      Yakima, WA93,8293824.0%
      Granger, WA3,8063824.0%
      Zillah, WA3,1373824.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Knoxville, IL3,1374118.0%
      Blanchard, LA3,1373922.0%
      Mamou, LA3,1374118.0%
      Elgin, OK3,1374314.0%
      Milbank, SD3,1372550.0%
      Zillah, WA3,1373824.0%
      Source: The Zillah, 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.