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
As Heather Heights enters December, the average high-temperature subtly lowers from the a fresh 54°F (12.2°C) of November to a chilly 45.5°F (7.5°C). In Heather Heights, the average nighttime temperature during December is a wintry 34.5°F (1.4°C).Humidity
In December, the average relative humidity in Heather Heights, Maryland, is 76%.Rainfall
In Heather Heights, during December, the rain falls for 7.3 days and regularly aggregates up to 0.98" (25mm) of precipitation. In Heather Heights, during the entire year, the rain falls for 107.5 days and collects up to 10.67" (271mm) of precipitation.Snowfall
Months with snowfall in Heather Heights are January through March, November and December. In Heather Heights, in December, during 1.4 snowfall days, 0.24" (6mm) of snow is typically accumulated. In Heather Heights, during the entire year, snow falls for 9.4 days and aggregates up to 1.73" (44mm) of snow.Daylight
The month with the shortest days in Heather Heights, Maryland, is December, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 7:05 am and sunset at 4:41 pm. On the last day of December, in Heather Heights, sunrise is at 7:23 am and sunset at 4:51 pm EST.
Sunshine
In December, the average sunshine in Heather Heights is 5.2h.UV index
The months with the lowest UV index in Heather Heights, Maryland, are January and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The maximum daily UV index of 2 in December converts into the following recommendations:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Notice! The UV radiation of the Sun can be intensified nearly twofold due to the reflective quality of snow.
Frequently asked questions
What is the average December temperature in Heather Heights?
What is the average humidity in December in Heather Heights?
How much does it rain in Heather Heights in December?
How many days does it snow in December in Heather Heights?
What is the month with the shortest days in Heather Heights?
What is the average length of the day in December in Heather Heights?
When is the sunrise / sunset in December in Heather Heights?
How many hours of sunshine does Heather Heights have in December?
What are the months with the lowest UV index in Heather Heights?
What is the UV index reading in December in Heather Heights?
Average temperature in December
Heather Heights, MD
- Average high temperature in December: 45.5°F
The warmest month (with the highest average high temperature) is July (84.6°F).
The month with the lowest average high temperature is January (39.2°F).
- Average low temperature in December: 34.5°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 (27.9°F).
Average pressure in December
Heather Heights, MD
- 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 (29.94"Hg).
Average wind speed in December
Heather Heights, MD
- Average wind speed in December: 8.6mph
The windiest month (with the highest average wind speed) is February (9.4mph).
The calmest month (with the lowest average wind speed) is August (5.7mph).
Average humidity in December
Heather Heights, MD
- Average humidity in December: 76%
The month with the highest relative humidity is May (79%).
The months with the lowest relative humidity are January, March, April and November (74%).
Average rainfall in December
Heather Heights, MD
- Average rainfall in December: 0.98"
The wettest month (with the highest rainfall) is August (1.42").
The driest month (with the least rainfall) is September (0.43").
Average rainfall days in December
Heather Heights, MD
- Average rainfall days in December: 7.3 days
The month with the highest number of rainy days is July (12.4 days).
The month with the least rainy days is November (5.6 days).
Average snowfall in December
Heather Heights, MD
- Average snowfall in December: 0.24"
The month with the highest snowfall is January (0.59").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Heather Heights, MD
- Average snowfall days in December: 1.4 days
The month with the highest number of snowfall days is January (3.1 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
Heather Heights, 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 48min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).
Average sunshine days in December
Heather Heights, MD
- Average sunshine days in December: 21.8 days
The month with the most sunshine days is January (22.3 days).
The month with the least sunshine days is July (15.1 days).
Average UV index in December
Heather Heights, 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
Heather Heights, MD
- Average cloud cover in December: 44
The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 29).
Average visibility in December
Heather Heights, 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).
Heather Heights, Maryland, USA
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