TODAY DEC27
TEMPERATURE47
HUMIDITY37
PRESSURE100100
WIND COND.10 11.2
  • 4626Sat20%
  • 4523Sun20%90%
  • 3316Mon80%50%
  • 3010Tue50%20%
  • 291220%
daynightWeather update from Sheridan County Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Dayton for July is 72.6 degrees
  • The lowest monthly average temperature in Dayton for December is 22 degrees
  • The most monthly precipitation in Dayton occurs in May with 3.4 inches
  • The air quality index in Dayton is 7% better than the national average
  • The pollution index in Dayton is 79% better than the national average

Compare Dayton, WY Weather

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      Dayton 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
      January11°F40°F24°F0.6"
      February14°F42°F27°F0.8"
      March23°F54°F37°F1.2"
      April29°F60°F44°F1.9"
      May37°F68°F52°F3.4"
      June46°F81°F63°F2.0"
      July53°F92°F73°F0.9"
      August51°F90°F69°F0.6"
      September42°F80°F59°F1.7"
      October32°F64°F46°F1.7"
      November20°F51°F34°F1.0"
      December10°F37°F22°F0.7"

      Dayton 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.
      IndexDaytonWyomingNational
      Air quality index393942
      Pollution index562,1181,779,9752,726,193

      Dayton air quality

      MeasurementTotal
      Days measured365
      Days with good air quality325
      Days with moderate air quality40
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Air quality details

      PollutantTotal
      Arsenic0.000%
      Benzene0.010%
      Carbon Tetrachloride0.001%
      Lead0.002%
      Mercury0.000%

      Average monthly Dayton temperature with heat index

      Dayton monthly precipitation with daily maximum

      Dayton monthly snow depth with daily maximum

      Dayton monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Parkman, WY3713922.0%
      Ranchester, WY1,0623922.0%
      Sheridan, WY17,9383922.0%
      Big Horn, WY3823922.0%
      Dayton, WY8793922.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Millville, CA8794216.0%
      Barnes Lake-Millers Lake, MI8793824.0%
      Hay Lake 209, AB879n/a 
      Penryn, CA878524.0%
      La Jara, CO8801570.0%
      Dayton, WY8793922.0%
      Source: The Dayton, WY 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.