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Key findings

  • The highest monthly average temperature in St. Simons for July is 82 degrees
  • The lowest monthly average temperature in St. Simons for January is 53 degrees
  • The most monthly precipitation in St. Simons occurs in August with 6.4 inches
  • The air quality index in St. Simons is 28% better than the national average
  • The pollution index in St. Simons is 92% better than the national average

Compare St. Simons, GA Weather

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      St. Simons 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
      January44°F63°F53°F2.9"
      February45°F65°F54°F3.1"
      March52°F71°F60°F2.5"
      April59°F77°F68°F3.3"
      May67°F83°F74°F3.0"
      June73°F88°F80°F5.3"
      July76°F90°F82°F4.3"
      August76°F90°F82°F6.4"
      September72°F86°F79°F5.8"
      October63°F79°F70°F3.4"
      November52°F71°F61°F1.4"
      December48°F67°F56°F2.6"

      St. Simons 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.
      IndexSt. SimonsGeorgiaNational
      Air quality index364150
      Pollution index380,7283,237,5535,066,862

      St. Simons air quality information

      MeasurementTotal
      Days measured279
      Days with good air quality254
      Days with moderate air quality25
      Days w/ poor A.Q. for sensitive groups0
      Days with unhealthy air quality0

      St. Simons air quality information

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

      Average monthly St. Simons temperature with heat index

      St. Simons monthly precipitation with daily maximum

      St. Simons monthly snow depth with daily maximum

      St. Simons monthly wind speed information

      Nearby cities with good air quality

      City, StatePopulationAir Quality IndexNational Avg.
      Darien, GA2,8253628%
      Dock Junction, GA6,8223628%
      Brunswick, GA15,9973628%
      Country Club Estates, GA8,3013628%
      St. Simons, GA13,4803628%

      Cities with similar population

      City, StatePopulationAir Quality IndexNational Avg.
      Orangeburg, SC13,4784314%
      Waimalu, HI13,4783040%
      Grover Beach, CA13,484468%
      Pell City, AL13,4893824%
      Brecksville, OH13,47050= 100
      St. Simons, GA13,4803628%
      Source: The St. Simons, GA 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.