December Weather in Leonardtown, United States

Last updated: June 24, 2025

In December, the average temperature in Leonardtown, United States hovers around 6°C (44°F). Expect a chilly minimum of -8°C (18°F) and a pleasant maximum reaching 19°C (67°F). This month also brings about 89 mm (3.5 in) of precipitation over 9 rainy days, contributing to an average humidity of 84%. Stay prepared for the elements!

December Temperature in Leonardtown

In December in Leonardtown, the average temperature is 6°C (44°F). Maximums can reach 19°C (67°F), while minimums can drop as low as -8°C (18°F). Be prepared for a mix of chilly days and mild weather if you're planning to travel during this time.

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

The chart illustrates December temperature patterns in Leonardtown, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Leonardtown, December typically has an average temperature of 6°C (44°F), with highs reaching up to 19°C (67°F) and lows dropping to around -8°C (18°F).

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

December Precipitation in Leonardtown

In Leonardtown in December, the precipitation amount is 89 mm (3.5 in) during a span of 9 days.

December Precipitation Trends in Leonardtown

The chart displays monthly precipitation patterns in Leonardtown, 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 Leonardtown, December typically receives around 89 mm (3.5 inches) of precipitation spread over approximately 9 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 Leonardtown

In Leonardtown in December humidity is 84%. With an average temperature of 6°C (44°F), this humidity feels like a chilly dampness that clings to your skin, making outdoor activities less comfortable and necessitating layered clothing to stay warm and dry while exploring the area.

December Average Humidity in Leonardtown

This chart illustrates the average monthly humidity levels in Leonardtown, 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 Leonardtown is approximately 84%, 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 Leonardtown

In Leonardtown 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 Leonardtown, you can check the information here.

Maximum UV Index Levels in Leonardtown for December

The chart shows the monthly maximum UV Index (UVI) for Leonardtown 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 Leonardtown typically reaches 3, which falls under the moderate exposure category.

Data source: Leonardtown 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 Leonardtown Compares to Other Months

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

This table compares monthly weather conditions in Leonardtown, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (39°F)	65 mm (2.5 inches)	84%	moderate
February Weather	6°C (43°F)	95 mm (3.7 inches)	83%	moderate
March Weather	9°C (48°F)	79 mm (3.1 inches)	83%	high
April Weather	14°C (58°F)	94 mm (3.7 inches)	81%	very high
May Weather	19°C (67°F)	117 mm (4.6 inches)	78%	very high
June Weather	24°C (76°F)	106 mm (4.2 inches)	79%	very high
July Weather	27°C (81°F)	132 mm (5.2 inches)	74%	very high
August Weather	26°C (79°F)	157 mm (6.2 inches)	72%	very high
September Weather	23°C (74°F)	100 mm (3.9 inches)	75%	very high
October Weather	18°C (64°F)	118 mm (4.7 inches)	81%	high
November Weather	10°C (50°F)	83 mm (3.3 inches)	85%	moderate
December Weather	6°C (44°F)	89 mm (3.5 inches)	84%	moderate