December Weather in Dulles Town Center

Last updated: March 2, 2024

The weather in Dulles Town Center, United States, during December is characterized by an average temperature of 4°C (40°F). Highs can soar to 18°C (64°F), while lows may dip to -7°C (20°F). Typically, the humidity level in Dulles Town Center throughout December hovers around 85%.

-7°C (20°F)

Minimum temperature

4°C (40°F)

Average temperature

18°C (64°F)

Maximum temperature

85%

Humidity

Precipitation and Sunshine hours

In December, Dulles Town Center averages 92 mm (3.6 inches) of rainfall, typically over the course of 9 rainy days. The month enjoys an average of 9 hours 28 minutes of daylight, with the sun shining for approximately 6 hours 8 minutes each day. Additionally, there is a 37% probability of sunny days during this period.

92 mm (3.6 inches)

Precipitation

9 rainy days

Rainy days

6 hours 8 minutes

Sunshine hours

37%

Chance of sun

UV Index

In December, the UV Index in Dulles Town Center reaches a maximum of 3, indicating a level of Moderate exposure. The most intense UV radiation typically occurs between 12:00 and 14:00, during which unprotected skin may burn in as little as 30 minutes.

Average solar exposure data for the current time of the year. Actual values may vary and depend on many factors, such as cloud cover, vegetation cover, surface type, etc.
	07:00	08:00	09:00	10:00	11:00	12:00	13:00	14:00	15:00	16:00	17:00	18:00	19:00
UVI	0	1	1	2	2	3	2	2	1	1	0	0	0
Exposure	Low					Moderate	Low
Time to burn	45 min					30 min	45 min