TODAY JUN20
TEMPERATURE86
HUMIDITY55
PRESSURE30
WIND COND. 3.4
  • 8469Thu80%90%
  • 8668Fri80%70%
  • 8770Sat60%40%
  • 9070Sun40%70%
  • 8969Mon70%60%
daynightWeather update from Chattanooga, Lovell Field at

Charleston Average Weather

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
January10°F72°F43°F3.9"
February14°F74°F44°F3.1"
March21°F88°F53°F3.9"
April27°F89°F61°F4.2"
May41°F92°F68°F3.1"
June54°F99°F77°F3.0"
July57°F100°F78°F5.2"
August60°F105°F80°F3.9"
September46°F97°F73°F4.3"
October30°F91°F61°F4.0"
November19°F84°F50°F4.0"
December14°F77°F44°F5.6"

Did you know?

  • The highest monthly average temperature in Charleston for August is 80 degrees.
  • The lowest monthly average temperature in Charleston for January is 43 degrees.
  • The most monthly precipitation in Charleston occurs in December with 5.6 inches.
  • The air quality index in Charleston is 97% better than the national average.
  • The pollution index in Charleston is 94% better than the national average.

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Compare Charleston, TN Weather To Other Cities

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 index17650
Pollution index271,3563,610,4745,066,862

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

City, StatePopulationAir Quality IndexNational Avg.
Dayton, TN7,308198%
Benton, TN1,821198%
East Cleveland, TN1,833198%
South Cleveland, TN7,414198%
Calhoun, TN618198%
Charleston, TN888198%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Puget Island, WA8882256%
Riner, VA8883530%
Potomac Park, MD8883236%
Troy, ID8881080%
Morganza, LA888468%
Charleston, TN888198%
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.