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St. Simons, GA weather and climate

Glynn County, GA · population 16,026 · about 16 ft elevation

Everything below is a 30 year average for 1991-2020, computed from daily climate history at St. Simons's own coordinates.

The year at a glance

Sunny days
214
clear or partly cloudy, per year
Precipitation
42 in
per year
Wet days
132
rain or snow per year
Snowfall
0 in
per year
Hot days
48
above 90 °F
Freezing nights
8
at or below 32 °F
Humidity
76%
average relative
Average temperature
69 °F
year round

Monthly temperatures

Average daily high and low for each month, in °F.

Daily highDaily low
6080JanMarMayJulSepNovDaily high, Jan: 62 °FDaily high, Feb: 65 °FDaily high, Mar: 70 °FDaily high, Apr: 76 °FDaily high, May: 83 °FDaily high, Jun: 88 °FDaily high, Jul: 91 °FDaily high, Aug: 90 °FDaily high, Sep: 86 °FDaily high, Oct: 79 °FDaily high, Nov: 71 °FDaily high, Dec: 64 °FDaily low, Jan: 44 °FDaily low, Feb: 47 °FDaily low, Mar: 53 °FDaily low, Apr: 60 °FDaily low, May: 68 °FDaily low, Jun: 74 °FDaily low, Jul: 76 °FDaily low, Aug: 76 °FDaily low, Sep: 73 °FDaily low, Oct: 64 °FDaily low, Nov: 53 °FDaily low, Dec: 47 °F
View monthly temperatures as a table
Monthly temperatures (°F)
CityJanFebMarAprMayJunJulAugSepOctNovDec
Daily high626570768388919086797164
Daily low444753606874767673645347

Monthly precipitation

Total rain plus melted snow for each month, in inches.

0.02.04.06.0JanMarMayJulSepNovSt. Simons, Jan: 3.2 inSt. Simons, Feb: 2.7 inSt. Simons, Mar: 3.0 inSt. Simons, Apr: 2.5 inSt. Simons, May: 2.4 inSt. Simons, Jun: 5.2 inSt. Simons, Jul: 4.4 inSt. Simons, Aug: 5.8 inSt. Simons, Sep: 5.0 inSt. Simons, Oct: 3.2 inSt. Simons, Nov: 2.0 inSt. Simons, Dec: 2.9 in
View monthly precipitation as a table
Monthly precipitation (inches)
CityJanFebMarAprMayJunJulAugSepOctNovDec
St. Simons3.22.73.02.52.45.24.45.85.03.22.02.9

Monthly sunny days

Days each month with clear or partly cloudy skies.

01020JanMarMayJulSepNovSt. Simons, Jan: 17 daysSt. Simons, Feb: 15 daysSt. Simons, Mar: 18 daysSt. Simons, Apr: 20 daysSt. Simons, May: 21 daysSt. Simons, Jun: 17 daysSt. Simons, Jul: 17 daysSt. Simons, Aug: 16 daysSt. Simons, Sep: 17 daysSt. Simons, Oct: 20 daysSt. Simons, Nov: 19 daysSt. Simons, Dec: 16 days
View monthly sunny days as a table
Monthly sunny days (days)
CityJanFebMarAprMayJunJulAugSepOctNovDec
St. Simons171518202117171617201916

Compare St. Simons with another city

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About this data

Figures are 30 year averages for 1991-2020. Wet days count days with measurable precipitation, calibrated against the wet day counts in NOAA's published climate normals. Sunny days count clear plus partly cloudy days, defined as average cloud cover of 63 percent or less and calibrated against NOAA's published sky cover tables. Snowfall figures are model estimates anchored to NOAA station measurements near each city.

Weather data by Open-Meteo.com (CC BY 4.0). Contains modified Copernicus Climate Change Service information (ERA5, ERA5-Land).