December Weather in Yorktown, United States

Last updated: June 24, 2025

In Yorktown, United States, the average temperature in December hovers around 15°C (59°F), with a minimum that can dip to -3°C (27°F) and a maximum soaring to 32°C (89°F). Expect about 59 mm (2.3 in) of precipitation spread over 6 days, contributing to an average humidity level of 86%. Be prepared for a variety of weather conditions!

December Temperature in Yorktown

In December in Yorktown, the average temperature is 15°C (59°F), with maximums reaching 32°C (89°F) and minimums dropping as low as -3°C (27°F). Be prepared for a wide range of temperatures when planning your trip.

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

The chart illustrates December temperature patterns in Yorktown, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Yorktown, December typically has an average temperature of 15°C (59°F), with highs reaching up to 32°C (89°F) and lows dropping to around -3°C (27°F).

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

December Precipitation in Yorktown

In Yorktown in December, the precipitation amount is 59 mm (2.3 in) over the course of 6 days.

December Precipitation Trends in Yorktown

The chart displays monthly precipitation patterns in Yorktown, 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 Yorktown, December typically receives around 59 mm (2.3 inches) of precipitation spread over approximately 6 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 Yorktown

In Yorktown in December, humidity is 86%. With an average temperature of 15°C (59°F), this humidity feels like a warm, damp blanket that clings to your skin, making traveling slightly uncomfortable but still manageable if you stay hydrated and take breaks in shaded areas.

December Average Humidity in Yorktown

This chart illustrates the average monthly humidity levels in Yorktown, 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 Yorktown is approximately 86%, 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 Yorktown

In Yorktown in December, the maximum UV index reaches 5, which corresponds to a moderate Exposure Category. Under these conditions, the estimated time to burn is approximately 30 minutes. For more details, you can check the Hourly UV Index in Yorktown.

Maximum UV Index Levels in Yorktown for December

The chart shows the monthly maximum UV Index (UVI) for Yorktown 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 Yorktown typically reaches 5, which falls under the moderate exposure category.

Data source: Yorktown 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 Yorktown Compares to Other Months

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

This table compares monthly weather conditions in Yorktown, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	13°C (55°F)	43 mm (1.7 inches)	79%	moderate
February Weather	14°C (58°F)	52 mm (2.0 inches)	79%	very high
March Weather	19°C (67°F)	55 mm (2.2 inches)	74%	very high
April Weather	22°C (72°F)	70 mm (2.8 inches)	76%	extreme
May Weather	26°C (79°F)	110 mm (4.3 inches)	81%	extreme
June Weather	28°C (84°F)	100 mm (4.0 inches)	76%	extreme
July Weather	30°C (85°F)	81 mm (3.2 inches)	66%	extreme
August Weather	30°C (86°F)	71 mm (2.8 inches)	58%	extreme
September Weather	28°C (82°F)	109 mm (4.3 inches)	65%	extreme
October Weather	23°C (74°F)	64 mm (2.5 inches)	74%	very high
November Weather	17°C (64°F)	59 mm (2.3 inches)	81%	high
December Weather	15°C (59°F)	59 mm (2.3 inches)	86%	moderate