December Weather in Ashton-Sandy Spring

Last updated: March 2, 2024

The weather in Ashton-Sandy Spring, United States, during December is characterized by an average temperature of 4°C (40°F). Highs can soar to 17°C (63°F), while lows may dip to -6°C (21°F). Typically, the humidity level in Ashton-Sandy Spring throughout December hovers around 84%.

-6°C (21°F)

Minimum temperature

4°C (40°F)

Average temperature

17°C (63°F)

Maximum temperature

84%

Humidity

Precipitation and Sunshine hours

In December, Ashton-Sandy Spring averages 95 mm (3.7 inches) of rainfall, typically over the course of 9 rainy days. The month enjoys an average of 9 hours 27 minutes of daylight, with the sun shining for approximately 6 hours 9 minutes each day. Additionally, there is a 36% probability of sunny days during this period.

95 mm (3.7 inches)

Precipitation

9 rainy days

Rainy days

6 hours 9 minutes

Sunshine hours

36%

Chance of sun

UV Index

In December, the UV Index in Ashton-Sandy Spring 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