Glynn County (Saint Simons Island)
December
Weather in Glynn County, Georgia for December 2025
Your guide to Glynn County weather in December - trends and predictions
In general, the average temperature in Glynn County at the beginning of December is 13.9 °F. As the month progressed, temperatures tended to significantly warm up, reaching an average of 17.3 °F by the end of December.
Glynn County experiences moderate rainfall in December, with an average of 6 rainy days and a total precipitation of 30.4 mm.
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Temperatures
Rain 🌧️
More
25
Dry days
6
Rainy days
0
Snow days
16°/10°
Temperatures
18 km/h
Avg max wind
74 %
Avg humidity
Glynn County Weather December
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Temperatures trend during December in Glynn County
See the weather trend as well as the moving average line
December weather in Glynn County day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Dec. 1 |  Sunny | 16° /5° | 0 mm | 5 | |
| Dec. 2 | Sunny | 15° /5° | 0 mm | 5 | |
| Dec. 3 | Sunny | 10° /4° | 0 mm | 4 | |
| Dec. 4 | Sunny | 13° /3° | 0 mm | 4 | |
| Dec. 5 |  Overcast | 18° /8° | 0 mm | 4 | |
| Dec. 6 | Overcast | 13° /5° | 0 mm | 3 | |
| Dec. 7 | Sunny | 12° /3° | 0 mm | 4 | |
| Dec. 8 | Overcast | 18° /5° | 0 mm | 4 | |
| Dec. 9 | Overcast | 20° /13° | 0 mm | 5 | |
| Dec. 10 | Overcast | 22° /16° | 0 mm | 5 | |
| Dec. 11 |  Moderate or heavy rain shower | 19° /9° | 10.3 mm | 4 | |
| Dec. 12 | Sunny | 13° /4° | 0 mm | 4 | |
| Dec. 13 | Sunny | 15° /8° | 0 mm | 5 | |
| Dec. 14 | Overcast | 17° /14° | 2.2 mm | 4 | |
| Dec. 15 | Overcast | 18° /13° | 0.1 mm | 4 | |
| Dec. 16 | Overcast | 17° /13° | 0 mm | 4 | |
| Dec. 17 | Overcast | 21° /15° | 0 mm | 5 | |
| Dec. 18 |  Patchy rain possible | 20° /16° | 0.6 mm | 5 | |
| Dec. 19 | Overcast | 21° /16° | 0 mm | 5 | |
| Dec. 20 | Overcast | 18° /11° | 0 mm | 4 | |
| Dec. 21 | Sunny | 12° /4° | 0 mm | 4 | |
| Dec. 22 |  Partly cloudy | 10° /6° | 0 mm | 4 | |
| Dec. 23 | Patchy rain possible | 9° /7° | 1.8 mm | 2 | |
| Dec. 24 | Overcast | 14° /7° | 0 mm | 3 | |
| Dec. 25 |  Cloudy | 15° /8° | 0 mm | 3 | |
| Dec. 26 | Patchy rain possible | 13° /12° | 0.2 mm | 3 | |
| Dec. 27 | Patchy rain possible | 18° /12° | 0.2 mm | 4 | |
| Dec. 28 | Patchy rain possible | 20° /16° | 10.5 mm | 4 | |
| Dec. 29 | Moderate or heavy rain shower | 19° /17° | 4.4 mm | 4 | |
| Dec. 30 | Cloudy | 18° /14° | 0.1 mm | 4 | |
| Dec. 31 |  Fog | 18° /12° | 0 mm | 4 | |
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Important Notice
Our weather forecast for Glynn County in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Glynn County forecast closer to your planned date for the most up-to-date weather information.
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Glynn County in December - FAQ
What are the expected maximum and minimum temperatures in Glynn County during December?
Enjoy moderate daytime temperatures of up to 16° and cooler nights around 10°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in Glynn County during December?
In December, Glynn County can expect light to moderate rainfall, totaling 30.4 mm across approximately 6 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in Glynn County during December?
The average wind speed in Glynn County during December is 18 km/h, suggesting breezy to windy conditions, depending on your activities.
December rainfall patterns in Glynn County
Explore the daily rainfall trends and prepare for Glynn Countys December weather 💧
Typically, Glynn County has 6 rainy days in December with a total of 30.4 mm of rainfall.
UV exposure in Glynn County during December
Stay informed about UV levels for safe outdoor activities throughout the month of December ☀️
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Where is Glynn County?Get accurate weather forecasts for Glynn County, located at latitude 31.151 and longitude -81.37. Stay updated with localized weather information tailored for Glynn County.
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