TODAY MAR28
TEMPERATURE57
HUMIDITY29
PRESSURE100240
WIND COND.150 13
  • 5329Fri
  • 4726Sat30%20%
  • 4525Sun40%50%
  • 5225Mon
  • 6131Tue
daynightWeather update from South Big Horn County Airport at
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Weather Quick Facts

  • The highest monthly average temperature in Greybull for July is 76.6 degrees
  • The lowest monthly average temperature in Greybull for January is 16.6 degrees
  • The most monthly precipitation in Greybull occurs in May with 1.4 inches
  • The air quality index in Greybull is 7% better than the national average
  • The pollution index in Greybull is 80% better than the national average

Compare Greybull, WY Weather

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      Greybull 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
      January5°F31°F17°F0.2"
      February12°F37°F23°F0.1"
      March26°F55°F39°F0.2"
      April33°F62°F47°F0.4"
      May43°F72°F56°F1.4"
      June52°F85°F68°F0.8"
      July59°F94°F77°F0.2"
      August55°F91°F73°F0.3"
      September45°F80°F62°F0.8"
      October34°F63°F47°F0.8"
      November20°F47°F32°F0.2"
      December6°F30°F17°F0.1"

      Greybull 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.
      IndexGreybullWyomingNational
      Air quality index393942
      Pollution index554,7341,779,9752,726,193

      Greybull air quality information

      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

      Greybull air quality information

      PollutantTotal
      Arsenic0.000%
      Benzene0.005%
      Carbon Tetrachloride0.001%
      Lead0.001%
      Mercury0.000%

      Average monthly Greybull temperature with heat index

      Greybull monthly precipitation with daily maximum

      Greybull monthly snow depth with daily maximum

      Greybull monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Shell, WY903922.0%
      Basin, WY1,4213922.0%
      Greybull, WY2,1453922.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Southwest Greensburg, PA2,1455612.0%
      Jamestown, TN2,1452550.0%
      Stanley, VA2,1443628.0%
      Anthony, KS2,1464020.0%
      Taylorsville, NC2,1464314.0%
      Greybull, WY2,1453922.0%
      Source: The Greybull, 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.