TODAY MAY30
TEMPERATURE77
HUMIDITY39
PRESSURE101830
WIND COND.340 11.2
  • 7953Thu
  • 8255Fri
  • 8161Sat40%
  • 8063Sun40%40%
  • 8365Mon30%30%
daynightWeather update from Cleveland Regional Jetport at
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Weather Quick Facts

  • The highest monthly average temperature in Charleston for August is 79.7 degrees
  • The lowest monthly average temperature in Charleston for January is 41.2 degrees
  • The most monthly precipitation in Charleston occurs in December with 6.5 inches
  • The air quality index in Charleston is 98% better than the national average
  • The pollution index in Charleston is 90% better than the national average

Compare Charleston, TN Weather

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      Charleston 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°F54°F41°F5.0"
      February32°F57°F44°F3.9"
      March41°F67°F53°F4.8"
      April49°F77°F62°F6.0"
      May57°F83°F69°F3.7"
      June66°F91°F78°F3.4"
      July70°F92°F80°F5.5"
      August70°F92°F80°F4.2"
      September63°F87°F73°F4.5"
      October50°F76°F62°F4.3"
      November38°F65°F51°F4.5"
      December35°F56°F45°F6.5"

      Charleston 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.
      IndexCharlestonTennesseeNational
      Air quality index17642
      Pollution index271,3562,454,9162,726,193

      Charleston air quality information

      MeasurementTotal
      Days measured365
      Days with good air quality363
      Days with moderate air quality2
      Days w/ poor A.Q. for sensitive groups
      Days with unhealthy air quality

      Charleston air quality information

      PollutantTotal
      Arsenic0.000%
      Benzene0.004%
      Carbon Tetrachloride0.001%
      Lead0.000%
      Mercury0.000%

      Average monthly Charleston temperature with heat index

      Charleston monthly precipitation with daily maximum

      Charleston monthly snow depth with daily maximum

      Charleston monthly wind speed information

      Nearby cities with good air quality

      CityPopulationAir Quality IndexNational Avg.
      Cleveland, TN45,115198.0%
      East Cleveland, TN2,557198.0%
      Dayton, TN7,357198.0%
      South Cleveland, TN7,792198.0%
      Calhoun, TN674198.0%
      Charleston, TN668198.0%

      Cities with similar population

      CityPopulationAir Quality IndexNational Avg.
      Blandinsville, IL6682942.0%
      Cedar Vale, KS6684020.0%
      Howard, KS6684020.0%
      Argyle, MN6683334.0%
      Pleasant Hope, MO6683922.0%
      Charleston, TN668198.0%
      Source: The Charleston, TN 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.