Glynn County Climate
Glynn County, Georgia
NOAA NCEI 1991-2020 Climate NormalsAvg Annual Temp
68.8°F
Annual Precip
47.8"
Annual Snowfall
0.0"
Extreme Heat Days
60
days >= 90°F/yr
Monthly Temperature
Precipitation Calendar
Growing Season & Gardening
9a
Minimum winter temperature range for plant survival
7,062
Excellent for heat-loving crops
Seasonal Overview
National Comparison
7-Day Outlook
Forecast
Current Conditions
Air Quality
Safety
Weather Alerts
Climate Advisory: Glynn County
Climate Verdict
Glynn County has a warm, averaging 68.8°F year-round, moderately wet with 47.8 inches of annual precipitation, occasional hot days — 59.900000000000006 per year above 90°F, virtually no measurable snowfall. This climate profile shapes everything from energy costs to outdoor recreation opportunities.
Seasonal Breakdown
Winters are mild, with January temperatures averaging 52.8°F. summers are hot, with July averaging 83.2°F. The 30°F seasonal variation provides noticeable but manageable change.
Outdoor & Gardening Guidance
Growing season and gardening data is currently limited for Glynn County. Check the USDA Plant Hardiness Zone Map and local extension office for specific guidance.
Regional Context
Glynn County is 5.2°F warmer than the Georgia statewide average of 63.7°F, it is somewhat drier than average for Georgia.
Climate Profile
About Glynn County Weather
Exceptional Warmth on the Coast
Glynn County’s average annual temperature of 68.8°F is vastly higher than the national median. The coastal location creates a humid, tropical feel that persists through most of the year.
One of Georgia’s Hottest Counties
At 68.8°F, Glynn is much warmer than the Georgia state average of 63.7°F. This makes it one of the most consistently hot regions in the state, even during the winter months.
Drier than the Interior South
The county receives 47.8 inches of rain, which is less than the state average of 51.4 inches. Coastal breezes often push heavy rain clouds further inland, leaving the coast slightly drier.
Endless Summer and Snowless Winters
Glynn faces 60 extreme heat days each year and a sweltering July average of 83.2°F. Winters are exceptionally mild, averaging 54.7°F with no recorded snowfall at all.
Prioritize Heat Safety and Airflow
With 60 days above 90°F, high-capacity cooling and hydration are essential for all residents. Because there is zero snow, winter planning focuses more on managing coastal humidity and seasonal storms.
Frequently Asked Questions
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Data sources: NOAA National Centers for Environmental Information (NCEI), U.S. Climate Normals 1991-2020. Forecast and alert data from National Weather Service API. Air quality data from Open-Meteo.
Climate normals are 30-year averages of weather variables. Station data is aggregated to county level. Forecasts and alerts are fetched live and may change frequently. Data is informational only — not a substitute for official National Weather Service forecasts or emergency weather warnings.