Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The transition to December results in a modest reduction in average high-temperature, moving from a mild 55.6°F (13.1°C) in November to a chilly 48.2°F (9°C). The average temperature during December nights is registered at an icy 38.1°F (3.4°C).Humidity
In Westover, the average relative humidity in December is 77%.Rainfall
In Westover, in December, during 11 rainfall days, 2.24" (57mm) of precipitation is typically accumulated. Throughout the year, there are 158.2 rainfall days, and 29.96" (761mm) of precipitation is accumulated.Snowfall
Months with snowfall in Westover are January through March, November and December. In Westover, during December, snow falls for 1.5 days and regularly aggregates up to 0.51" (13mm) of snow. In Westover, during the entire year, snow falls for 8.7 days and aggregates up to 3.74" (95mm) of snow.Daylight
The month with the shortest days in Westover is December, with an average of 9h and 36min of daylight.On the first day of the month, sunrise is at 7:00 am and sunset at 4:43 pm. On the last day of December, sunrise is at 7:19 am and sunset at 4:53 pm EST.
Sunshine
The months with the least sunshine are February and December, with an average of 5.3h of sunshine.UV index
The months with the lowest UV index are January and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for the ordinary person.Note: The daily high UV index of 2 during December translates into the following recommendations:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. When the Sun is at its strongest around midday, find shade and limit exposure. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Be attentive! The reflective property of snow can nearly double the Sun's UV radiation.
Frequently asked questions
What are the temperatures in Westover in December?
What is the average humidity in December in Westover?
How much does it rain in Westover in December?
How many days does it snow in December in Westover?
What is the month with the shortest days in Westover?
What is the average length of the day in December in Westover?
When is the sunrise / sunset in December in Westover?
What is the month with the least sunshine in Westover?
How many hours of sunshine does Westover have in December?
What are the months with the lowest UV index in Westover?
How high is the UV index in December in Westover?
Average temperature in December
Westover, MD
- Average high temperature in December: 48.2°F
The warmest month (with the highest average high temperature) is July (84.2°F).
The month with the lowest average high temperature is January (42.1°F).
- Average low temperature in December: 38.1°F
The month with the highest average low temperature is July (72.3°F).
The coldest month (with the lowest average low temperature) is January (31.5°F).
Average pressure in December
Westover, MD
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.95"Hg).
Average wind speed in December
Westover, MD
- Average wind speed in December: 9.6mph
The windiest months (with the highest average wind speed) are January, February and March (10.4mph).
The calmest month (with the lowest average wind speed) is August (7mph).
Average humidity in December
Westover, MD
- Average humidity in December: 77%
The month with the highest relative humidity is May (79%).
The month with the lowest relative humidity is January (74%).
Average rainfall in December
Westover, MD
- Average rainfall in December: 2.24"
The wettest month (with the highest rainfall) is August (3.46").
The driest month (with the least rainfall) is January (1.93").
Average rainfall days in December
Westover, MD
- Average rainfall days in December: 11 days
The month with the highest number of rainy days is July (18.1 days).
The month with the least rainy days is January (9.7 days).
Average snowfall in December
Westover, MD
- Average snowfall in December: 0.51"
The month with the highest snowfall is January (1.34").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Westover, MD
- Average snowfall days in December: 1.5 days
The month with the highest number of snowfall days is January (3.1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Westover, MD
- Average daylight in December: 9h and 4min
The month with the longest days is June (Average daylight: 14h and 48min).
The month with the shortest days is December (Average daylight: 9h and 36min).
- Average sunshine in December: 5h and 2min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The months with the least sunshine are February and December (Average sunshine: 5h and 18min).
Average sunshine days in December
Westover, MD
- Average sunshine days in December: 18.4 days
The month with the most sunshine days is November (18.8 days).
The month with the least sunshine days is August (9.8 days).
Average UV index in December
Westover, MD
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (UV index 6).
The months with the lowest UV index are January and December (UV index 2).
Average cloud cover in December
Westover, MD
- Average cloud cover in December: 42
The month with the most cloud cover is March (Cloud cover 44).
The month with the least cloud cover is July (Cloud cover 26).
Average visibility in December
Westover, MD
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (6mi).
Westover, Maryland, USA
Weather forecast for your location
2. Allow the app to use your location
