December Weather in Flagler, United States

Last updated: June 24, 2025

In December, the average temperature in Flagler, United States hovers around 2°C (36°F), with extremes ranging from a chilly -15°C (5°F) to a pleasant 23°C (74°F). Expect 9 mm (0.4 in) of rain over 2 days, contributing to an average humidity level of 80%.

December Temperature in Flagler

In December in Flagler, the average temperature is 2°C (36°F). The maximum can reach 23°C (74°F), while the minimum can drop as low as -15°C (5°F). Be prepared for a wide range of temperatures when traveling during this time.

December Weather in Flagler: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Flagler, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Flagler, December typically has an average temperature of 2°C (36°F), with highs reaching up to 23°C (74°F) and lows dropping to around -15°C (5°F).

Data source: Temperature data for Flagler generated using information from the Copernicus Climate Change Service.

December Precipitation in Flagler

In Flagler in December, the precipitation amount is 9 mm (0.4 in) over the course of 2 days.

December Precipitation Trends in Flagler

The chart displays monthly precipitation patterns in Flagler, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Flagler, December typically receives around 9 mm (0.4 inches) of precipitation spread over approximately 2 days.

Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

December Humidity in Flagler

In Flagler in December humidity is 80%. With an average temperature of 2°C (36°F), this humidity feels like a heavy, damp chill that seeps into your bones, making it challenging for outdoor adventures and often necessitating layered clothing to stay warm and comfortable while exploring.

December Average Humidity in Flagler

This chart illustrates the average monthly humidity levels in Flagler, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Flagler is approximately 80%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Flagler

In Flagler in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Flagler, you can check the information here.

Maximum UV Index Levels in Flagler for December

The chart shows the monthly maximum UV Index (UVI) for Flagler in December, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In December, the maximum UV index in Flagler typically reaches 3, which falls under the moderate exposure category.

Data source: Flagler December UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How December Weather in Flagler Compares to Other Months

Weather in Flagler varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Flagler, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Flagler, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	1°C (33°F)	14 mm (0.6 inches)	74%	moderate
February Weather	0°C (32°F)	15 mm (0.6 inches)	75%	moderate
March Weather	6°C (44°F)	49 mm (1.9 inches)	66%	very high
April Weather	10°C (50°F)	36 mm (1.4 inches)	62%	very high
May Weather	15°C (59°F)	77 mm (3.0 inches)	74%	extreme
June Weather	22°C (73°F)	41 mm (1.6 inches)	76%	extreme
July Weather	24°C (76°F)	56 mm (2.2 inches)	75%	extreme
August Weather	23°C (74°F)	43 mm (1.7 inches)	80%	extreme
September Weather	20°C (69°F)	23 mm (0.9 inches)	79%	very high
October Weather	10°C (51°F)	32 mm (1.3 inches)	77%	high
November Weather	6°C (43°F)	13 mm (0.5 inches)	74%	moderate
December Weather	2°C (36°F)	9 mm (0.4 inches)	80%	moderate