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
In the transition to December, Brightwood observes a minor drop in the average high-temperature, shifting from a fresh 53.8°F (12.1°C) in November to a frosty 45.5°F (7.5°C). The average low-temperature during December nights is an icy 34.7°F (1.5°C).Humidity
In December, the average relative humidity in Brightwood, Maryland, is 75%.Rainfall
In December, in Brightwood, Maryland, the rain falls for 11.4 days. Throughout December, 2.83" (72mm) of precipitation is accumulated. In Brightwood, during the entire year, the rain falls for 155.7 days and collects up to 31.22" (793mm) of precipitation.Snowfall
Months with snowfall in Brightwood are January through April, November and December. In December, it is snowing for 2.4 days. Throughout December, 0.63" (16mm) of snow is accumulated. In Brightwood, during the entire year, snow falls for 14 days and aggregates up to 6.14" (156mm) of snow.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:07 am and sunset at 4:44 pm. On the last day of December, in Brightwood, sunrise is at 7:25 am and sunset at 4:54 pm EST.
Sunshine
The average sunshine in December in Brightwood, Maryland, is 5.2h.UV index
The months with the lowest UV index are January, November and December, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a low threat to health from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum UV index of 2 during December translates into these guidelines:
People with sensitive skin, children, and babies should always be protected from prolonged sun exposure. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Frequently asked questions
What is the usual temperature for Brightwood in December?
What is the average humidity in December in Brightwood?
How much does it rain in Brightwood in December?
How many days does it snow in December in Brightwood?
What is the month with the shortest days in Brightwood?
How many hours of daylight does Brightwood have in December?
When is the sunrise / sunset in December in Brightwood?
How many hours of sunshine does Brightwood have in December?
When is the lowest UV index in Brightwood?
How high is the UV index in December in Brightwood?
Average temperature in December
Brightwood, MD
- Average high temperature in December: 45.5°F
The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (39.6°F).
- Average low temperature in December: 34.7°F
The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).
Average pressure in December
Brightwood, MD
- Average pressure in December: 30.11"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).
Average wind speed in December
Brightwood, MD
- Average wind speed in December: 8.6mph
The windiest month (with the highest average wind speed) is March (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in December
Brightwood, MD
- Average humidity in December: 75%
The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are January, March, April and November (72%).
Average rainfall in December
Brightwood, MD
- Average rainfall in December: 2.83"
The wettest month (with the highest rainfall) is August (3.54").
The driest month (with the least rainfall) is September (1.89").
Average rainfall days in December
Brightwood, MD
- Average rainfall days in December: 11.4 days
The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is November (9.4 days).
Average snowfall in December
Brightwood, MD
- Average snowfall in December: 0.63"
The month with the highest snowfall is January (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Brightwood, MD
- Average snowfall days in December: 2.4 days
The month with the highest number of snowfall days is January (4.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Brightwood, MD
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 54min).
The month with the shortest days is December (Average daylight: 9h and 30min).
- Average sunshine in December: 5h and 1min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).
Average sunshine days in December
Brightwood, MD
- Average sunshine days in December: 16.9 days
The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is May (10.8 days).
Average UV index in December
Brightwood, 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, November and December (UV index 2).
Average cloud cover in December
Brightwood, MD
- Average cloud cover in December: 44
The months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 28).
Average visibility in December
Brightwood, 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).
Brightwood, Maryland, USA
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