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 Chevy Chase, the average high-temperature in December marginally drops from a cool 53.8°F (12.1°C) in November to a frosty 45.3°F (7.4°C). In December, in Chevy Chase, the average low-temperature is 33.1°F (0.6°C).Humidity
The most humid month is December, with an average relative humidity of 76%.Rainfall
In Chevy Chase, during December, the rain falls for 9.9 days and regularly aggregates up to 2.17" (55mm) of precipitation. In Chevy Chase, during the entire year, the rain falls for 150.3 days and collects up to 28.66" (728mm) of precipitation.Snowfall
January through April, November and December are months with snowfall. In December, in Chevy Chase, it is snowing for 2 days. Throughout December, 0.94" (24mm) of snow is accumulated. Throughout the year, in Chevy Chase, Maryland, there are 13.7 snowfall days, and 8.39" (213mm) of snow is accumulated.Daylight
The month with the shortest days in Chevy Chase, Maryland, is December, with an average of 9h and 29min of daylight.On the first day of the month, sunrise is at 7:08 am and sunset at 4:46 pm. On the last day of December, in Chevy Chase, sunrise is at 7:26 am and sunset at 4:55 pm EST.
Sunshine
The months with the least sunshine in Chevy Chase are January, February and December, with an average of 5h of sunshine.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 reading of 2, and below, represents a minimal health hazard from unprotected exposure to Sun's UV rays for average individuals.Note: The average daily UV index of 2 in December transform into the following instructions:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. On bright days sunglasses that block both UVA and UVB rays should be worn. A hat with a wide brim is extremely helpful, as it can prevent roughly 50% of UV radiation from reaching the eyes. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
FAQ
What is the temperature in December in Chevy Chase?
What is the most humid month in Chevy Chase?
What is the average humidity in December in Chevy Chase?
How many days does it rain in December in Chevy Chase?
How much does it snow in Chevy Chase in December?
What is the month with the shortest days in Chevy Chase?
How many hours of daylight does Chevy Chase have in December?
When is the sunrise / sunset in December in Chevy Chase?
What is the month with the least sunshine in Chevy Chase?
How many hours of sunshine does Chevy Chase have in December?
What are the months with the lowest UV index in Chevy Chase?
What is the UV index reading in December in Chevy Chase?
Average temperature in December
Chevy Chase, MD
- Average high temperature in December: 45.3°F
The warmest month (with the highest average high temperature) is July (87.8°F).
The month with the lowest average high temperature is January (39.9°F).
- Average low temperature in December: 33.1°F
The month with the highest average low temperature is July (69.4°F).
The coldest month (with the lowest average low temperature) is January (27°F).
Average pressure in December
Chevy Chase, 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 (29.95"Hg).
Average wind speed in December
Chevy Chase, MD
- Average wind speed in December: 7mph
The windiest month (with the highest average wind speed) is March (8mph).
The calmest month (with the lowest average wind speed) is August (5.1mph).
Average humidity in December
Chevy Chase, MD
- Average humidity in December: 76%
The month with the highest relative humidity is December (76%).
The month with the lowest relative humidity is July (69%).
Average rainfall in December
Chevy Chase, MD
- Average rainfall in December: 2.17"
The wettest month (with the highest rainfall) is August (3.82").
The driest month (with the least rainfall) is January (1.69").
Average rainfall days in December
Chevy Chase, MD
- Average rainfall days in December: 9.9 days
The month with the highest number of rainy days is May (17.1 days).
The month with the least rainy days is November (8.5 days).
Average snowfall in December
Chevy Chase, MD
- Average snowfall in December: 0.94"
The month with the highest snowfall is January (2.6").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Chevy Chase, MD
- Average snowfall days in December: 2 days
The month with the highest number of snowfall days is February (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
Chevy Chase, 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 0min
The month with the most sunshine is July (Average sunshine: 10h and 42min).
The months with the least sunshine are January, February and December (Average sunshine: 5h and 0min).
Average sunshine days in December
Chevy Chase, MD
- Average sunshine days in December: 19.1 days
The month with the most sunshine days is November (20.4 days).
The months with the least sunshine days are May and July (12.3 days).
Average UV index in December
Chevy Chase, 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
Chevy Chase, MD
- Average cloud cover in December: 46
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in December
Chevy Chase, MD
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
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