December Weather in Saint Simon Mills, United States

Last updated: June 24, 2025

In December, the average temperature in Saint Simon Mills, United States hovers around 14°C (57°F), with fluctuations ranging from a brisk -1°C (30°F) to a pleasant 25°C (77°F). Expect around 110 mm (4.3 in) of precipitation over 8 days, and a notable average humidity of 85%, making it a time for cozy attire and a little indoor charm!

December Temperature in Saint Simon Mills

In December in Saint Simon Mills, the average temperature is 14°C (57°F), with maximums reaching up to 25°C (77°F) and minimums dipping as low as -1°C (30°F). It’s a great time to pack layers and enjoy diverse weather while exploring the area!

December Weather in Saint Simon Mills: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Saint Simon Mills, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint Simon Mills, December typically has an average temperature of 14°C (57°F), with highs reaching up to 25°C (77°F) and lows dropping to around -1°C (30°F).

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

December Precipitation in Saint Simon Mills

In Saint Simon Mills in December, the precipitation amount is 110 mm (4.3 in) over a period of 8 days.

December Precipitation Trends in Saint Simon Mills

The chart displays monthly precipitation patterns in Saint Simon Mills, 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 Saint Simon Mills, December typically receives around 110 mm (4.3 inches) of precipitation spread over approximately 8 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 Saint Simon Mills

In Saint Simon Mills in December, humidity is 85%. With an average temperature of 14°C (57°F), this humidity feels like a thick blanket enveloping you, making travel feel heavy and sluggish.

December Average Humidity in Saint Simon Mills

This chart illustrates the average monthly humidity levels in Saint Simon Mills, 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 Saint Simon Mills is approximately 85%, 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 Saint Simon Mills

In Saint Simon Mills in December, the maximum UV index reaches 4, which corresponds to a moderate Exposure Category. With a time to burn of 30 minutes, it’s important to take precautions to protect your skin. You can find more details in the Hourly UV Index in Saint Simon Mills for better planning.

Maximum UV Index Levels in Saint Simon Mills for December

The chart shows the monthly maximum UV Index (UVI) for Saint Simon Mills 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 Saint Simon Mills typically reaches 4, which falls under the moderate exposure category.

Data source: Saint Simon Mills 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 Saint Simon Mills Compares to Other Months

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

This table compares monthly weather conditions in Saint Simon Mills, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	12°C (55°F)	54 mm (2.1 inches)	84%	moderate
February Weather	15°C (59°F)	78 mm (3.1 inches)	79%	high
March Weather	17°C (63°F)	58 mm (2.3 inches)	78%	very high
April Weather	20°C (68°F)	79 mm (3.1 inches)	72%	very high
May Weather	24°C (75°F)	80 mm (3.1 inches)	72%	extreme
June Weather	26°C (79°F)	139 mm (5.5 inches)	74%	extreme
July Weather	27°C (82°F)	155 mm (6.1 inches)	82%	extreme
August Weather	27°C (81°F)	159 mm (6.3 inches)	82%	extreme
September Weather	26°C (79°F)	149 mm (5.9 inches)	83%	very high
October Weather	23°C (74°F)	76 mm (3.0 inches)	79%	very high
November Weather	17°C (62°F)	86 mm (3.4 inches)	82%	high
December Weather	14°C (57°F)	110 mm (4.3 inches)	85%	moderate