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
Chevy Chase Heights's progression into December involves a drop in the average high-temperature, receding from a frosty 47.1°F (8.4°C) in November to an icy 37.4°F (3°C). Chevy Chase Heights, during the nights of December, experiences an average temperature drop to a freezing cold 27°F (-2.8°C).Humidity
In December, the average relative humidity is 85%.Rainfall
In Chevy Chase Heights, in December, it is raining for 11.9 days, with typically 2.76" (70mm) of accumulated precipitation. Throughout the year, there are 183.5 rainfall days, and 33.46" (850mm) of precipitation is accumulated.Snowfall
January through May, October through December are months with snowfall in Chevy Chase Heights. In December, it is snowing for 13.1 days. Throughout December, 5.67" (144mm) of snow is accumulated. In Chevy Chase Heights, during the entire year, snow falls for 67.3 days and aggregates up to 28.62" (727mm) of snow.Daylight
December has the shortest days of the year in Chevy Chase Heights, with an average of 9h and 18min of daylight.On the first day of the month, sunrise is at 7:21 am and sunset at 4:50 pm. On the last day of December, sunrise is at 7:40 am and sunset at 4:59 pm EST.
Sunshine
In December, the average sunshine in Chevy Chase Heights is 3.2h.UV index
With an average maximum UV index of 1, December is the month with the lowest UV index in Chevy Chase Heights. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV rays for ordinary individuals.Note: The daily maximum UV index of 1 in December interprets into the following advice:
While extended sun exposure does not significantly affect most people, those with sensitive skin, children, and infants should always be protected. To protect against the Sun's most potent rays, avoid direct exposure around midday. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Frequently asked questions
How cold is December in Chevy Chase Heights?
What is the average humidity in December in Chevy Chase Heights?
How many days does it rain in December in Chevy Chase Heights?
How much does it snow in Chevy Chase Heights in December?
What is the month with the shortest days in Chevy Chase Heights?
What is the average length of the day in December in Chevy Chase Heights?
What time are sunrise and sunset in December in Chevy Chase Heights?
How long on average sun shines in December in Chevy Chase Heights?
When is the lowest UV index in Chevy Chase Heights?
What is the UV index reading in December in Chevy Chase Heights?
Average temperature in December
Chevy Chase Heights, PA
- Average high temperature in December: 37.4°F
The warmest month (with the highest average high temperature) is July (81.1°F).
The month with the lowest average high temperature is January (31.3°F).
- Average low temperature in December: 27°F
The month with the highest average low temperature is July (59.4°F).
The coldest month (with the lowest average low temperature) is January (19°F).
Average pressure in December
Chevy Chase Heights, PA
- Average pressure in December: 30.1"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
Chevy Chase Heights, PA
- Average wind speed in December: 8.8mph
The windiest month (with the highest average wind speed) is January (9.3mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).
Average humidity in December
Chevy Chase Heights, PA
- Average humidity in December: 85%
The month with the highest relative humidity is February (87%).
The months with the lowest relative humidity are April, June, July and August (78%).
Average rainfall in December
Chevy Chase Heights, PA
- Average rainfall in December: 2.76"
The wettest month (with the highest rainfall) is May (3.62").
The driest month (with the least rainfall) is November (1.93").
Average rainfall days in December
Chevy Chase Heights, PA
- Average rainfall days in December: 11.9 days
The month with the highest number of rainy days is May (21.5 days).
The month with the least rainy days is January (9.1 days).
Average snowfall in December
Chevy Chase Heights, PA
- Average snowfall in December: 5.67"
The month with the highest snowfall is January (7.05").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Chevy Chase Heights, PA
- Average snowfall days in December: 13.1 days
The month with the highest number of snowfall days is January (17.6 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Chevy Chase Heights, PA
- Average daylight in December: 9h and 2min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 18min).
- Average sunshine in December: 3h and 1min
The months with the most sunshine are July and August (Average sunshine: 9h and 48min).
The month with the least sunshine is January (Average sunshine: 2h and 48min).
Average sunshine days in December
Chevy Chase Heights, PA
- Average sunshine days in December: 9.8 days
The month with the most sunshine days is November (13.3 days).
The month with the least sunshine days is February (7.3 days).
Average UV index in December
Chevy Chase Heights, PA
- Average UV index in December: 1
The months with the highest UV index are May, June, July and August (UV index 5).
The month with the lowest UV index is December (UV index 1).
Average cloud cover in December
Chevy Chase Heights, PA
- Average cloud cover in December: 68
The month with the most cloud cover is January (Cloud cover 72).
The month with the least cloud cover is August (Cloud cover 37).
Average visibility in December
Chevy Chase Heights, PA
- Average visibility in December: 5mi
The month with the highest visibility is April (6mi).
The months with the lowest visibility are January and February (4mi).
Chevy Chase Heights, Pennsylvania, USA
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