TODAY NOV16
TEMPERATURE
HUMIDITY
PRESSURE
WIND COND.
  • 6850Sat
  • 7251Sun20%20%
  • 7150Mon
  • 7049Tue
  • 6851Wed
daynightWeather update from Fernandina Beach Municipal Airport at

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St. Marys 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
January41°F68°F53°F3.3"
February42°F71°F55°F3.2"
March47°F76°F61°F2.4"
April54°F82°F68°F3.2"
May61°F87°F74°F4.3"
June69°F91°F79°F7.6"
July72°F92°F81°F5.8"
August73°F92°F81°F7.1"
September69°F88°F77°F7.1"
October59°F82°F70°F4.0"
November48°F75°F61°F1.6"
December45°F72°F57°F3.0"

Did you know?

  • The highest monthly average temperature in St. Marys for August is 81 degrees.
  • The lowest monthly average temperature in St. Marys for January is 53 degrees.
  • The most monthly precipitation in St. Marys occurs in June with 7.6 inches.
  • The air quality index in St. Marys is 37% better than the national average.
  • The pollution index in St. Marys is 29% worse than the national average.

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Compare St. Marys, GA Weather To Other Cities

St. Marys 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. MarysGeorgiaNational
Air quality index314150
Pollution index6,554,7103,237,5535,066,862

St. Marys air quality information

MeasurementTotal
Days measured312
Days with good air quality286
Days with moderate air quality26
Days w/ poor A.Q. for sensitive groups
Days with unhealthy air quality

St. Marys air quality information

PollutantTotal
Arsenic0.020%
Benzene0.040%
Carbon Tetrachloride0.002%
Lead0.070%
Mercury0.010%

Average monthly St. Marys temperature with heat index

St. Marys monthly precipitation with daily maximum

St. Marys monthly snow depth with daily maximum

St. Marys monthly wind speed information

Nearby cities with good air quality

City, StatePopulationAir Quality IndexNational Avg.
Woodbine, GA1,6813138%
Kings Bay Base, GA1,9483138%
Kingsland, GA16,4113138%
Fernandina Beach, FL12,1563824%
Yulee, FL12,2173824%
St. Marys, GA17,8533138%

Cities with similar population

City, StatePopulationAir Quality IndexNational Avg.
Arroyo Grande, CA17,8425612%
Sheridan, WY17,8663628%
Newburyport, MA17,8373628%
Gretna, LA17,8324510%
Rancho Mirage, CA17,8768570%
St. Marys, GA17,8533138%
Source: The St. Marys, 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.