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 into December involves a small decrease in the average high-temperature, dipping slightly from a fresh 54.5°F (12.5°C) in November to a frosty 46.4°F (8°C). In the month of December, the average temperature dips to an icy 36.5°F (2.5°C) during the night.Humidity
In December, the average relative humidity is 75%.Rainfall
In Courtney Manor, in December, it is raining for 7.5 days, with typically 0.67" (17mm) of accumulated precipitation. In Courtney Manor, during the entire year, the rain falls for 127.2 days and collects up to 11.85" (301mm) of precipitation.Snowfall
January through March, November and December are months with snowfall. In Courtney Manor, in December, during 1.4 snowfall days, 0.16" (4mm) of snow is typically accumulated. In Courtney Manor, during the entire year, snow falls for 8 days and aggregates up to 1.22" (31mm) 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 7:06 am and sunset at 4:45 pm. On the last day of December, sunrise is at 7:24 am and sunset at 4:55 pm EST.
Sunshine
The months with the least sunshine are February and December, with an average of 5.2h of sunshine.UV index
The months with the lowest UV index are January, February and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: A maximum high UV index of 2 in December translates into the following recommendations:
Although the majority can endure up to an hour in the sun without burns, children always require sun protection. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. A wide-brimmed hat is a shield, deflecting up to 50% of harmful UV radiation from eyes. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average December temperature?
What is the average humidity in December?
How much does it rain in December?
How much does it snow in December?
What is the month with the shortest days?
What is the average length of the day in December?
When is the sunrise / sunset in December?
What are the months with the least sunshine?
How many hours of sunshine does Courtney Manor have in December?
When is the lowest UV index in Courtney Manor?
What is the UV index reading in December?
Average temperature in December
Courtney Manor, MD
- Average high temperature in December: 46.4°F
The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (40.5°F).
- Average low temperature in December: 36.5°F
The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (30°F).
Average pressure in December
Courtney Manor, 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 (29.94"Hg).
Average wind speed in December
Courtney Manor, MD
- Average wind speed in December: 8.9mph
The windiest month (with the highest average wind speed) is March (9.8mph).
The calmest month (with the lowest average wind speed) is July (6.4mph).
Average humidity in December
Courtney Manor, 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 and November (72%).
Average rainfall in December
Courtney Manor, MD
- Average rainfall in December: 0.67"
The wettest month (with the highest rainfall) is August (1.93").
The driest month (with the least rainfall) is January (0.51").
Average rainfall days in December
Courtney Manor, MD
- Average rainfall days in December: 7.5 days
The month with the highest number of rainy days is August (15.6 days).
The month with the least rainy days is November (5.9 days).
Average snowfall in December
Courtney Manor, MD
- Average snowfall in December: 0.16"
The month with the highest snowfall is January (0.55").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Courtney Manor, MD
- Average snowfall days in December: 1.4 days
The month with the highest number of snowfall days is January (2.6 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
Courtney Manor, MD
- Average daylight in December: 9h and 3min
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 30min).
- Average sunshine in December: 5h and 1min
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 12min).
Average sunshine days in December
Courtney Manor, MD
- Average sunshine days in December: 21 days
The month with the most sunshine days is November (22.6 days).
The month with the least sunshine days is August (12.5 days).
Average UV index in December
Courtney Manor, 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, February and December (UV index 2).
Average cloud cover in December
Courtney Manor, MD
- Average cloud cover in December: 43
The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 27).
Average visibility in December
Courtney Manor, 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).
Courtney Manor, Maryland, USA
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