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Key findings

  • The highest monthly average temperature in Grayson for July is 75.8 degrees
  • The lowest monthly average temperature in Grayson for February is 32.5 degrees
  • The most monthly precipitation in Grayson occurs in October with 13.4 inches
  • The air quality index in Grayson is 16% better than the national average
  • The pollution index in Grayson is 6% better than the national average

Compare Grayson, KY Weather

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      Grayson 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
      January31°F48°F38°F4.1"
      February22°F45°F33°F3.8"
      March31°F55°F41°F8.2"
      April46°F69°F56°F11.0"
      May56°F78°F66°F0.8"
      June65°F83°F74°F12.8"
      July68°F86°F76°F7.5"
      August65°F85°F74°F5.1"
      September61°F82°F70°F4.7"
      October48°F71°F58°F13.4"
      November38°F59°F46°F3.2"
      December32°F50°F40°F7.1"

      Grayson 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.
      IndexGraysonKentuckyNational
      Air quality index424550
      Pollution index2,559,0401,369,1312,726,193

      Grayson air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality299
      Days with moderate air quality66
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      Grayson air quality information

      PollutantTotal
      Arsenic0.390%
      Benzene0.010%
      Carbon Tetrachloride0.020%
      Lead0.000%
      Mercury0.000%

      Average monthly Grayson temperature with heat index

      Grayson monthly precipitation with daily maximum

      Grayson monthly snow depth with daily maximum

      Grayson monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Worthington, KY1,4061472.0%
      Wurtland, KY1,1591472.0%
      Olive Hill, KY1,7711472.0%
      Ironville, KY5254216.0%
      Flatwoods, KY7,3584216.0%
      Grayson, KY4,0934216.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Williamston, SC4,0933138.0%
      Mullica Hill, NJ4,092512.0%
      Northern Rockies, BC4,092n/a 
      Walthourville, GA4,0913922.0%
      Nassau Bay, TX4,091524.0%
      Grayson, KY4,0934216.0%
      Source: The Grayson, KY 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.