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
Maryland observes a small decrease in the average high-temperature with the arrival of December, falling from November's fresh 52.5°F (11.4°C) to a frosty 43.9°F (6.6°C). An average minimum temperature of 32.7°F (0.4°C) marks the month of December.Humidity
In Maryland, the average relative humidity in December is 78%.Rainfall
In Maryland, in December, it is raining for 11 days, with typically 2.95" (75mm) of accumulated precipitation. In Maryland, during the entire year, the rain falls for 154.3 days and collects up to 29.25" (743mm) of precipitation.Snowfall
Months with snowfall in Maryland are January through May, November and December. In Maryland, in December, snow falls for 3.2 days, with typically accumulated 1.14" (29mm) of snow. In Maryland, during the entire year, snow falls for 18.9 days and aggregates up to 8.39" (213mm) of snow.Daylight
With an average of 9h and 24min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:01 am and sunset at 4:32 pm. On the last day of the month, sunrise is at 7:19 am and sunset at 4:41 pm EST.
Sunshine
In December, the average sunshine is 5h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Maryland. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for average individuals.Note: In December, the maximum UV index of 2 suggests these recommendations:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. For holistic sun protection encompassing the eyes, ears, face, and neck, a wide-brim hat is key. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is December cold?
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 in Maryland?
What is the average length of the day in December?
What time are sunrise and sunset in December in Maryland?
How long on average sun shines in December in Maryland?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Maryland, NJ
- Average high temperature in December: 43.9°F
The warmest month (with the highest average high temperature) is July (83.8°F).
The month with the lowest average high temperature is January (37.4°F).
- Average low temperature in December: 32.7°F
The month with the highest average low temperature is July (67.8°F).
The coldest month (with the lowest average low temperature) is January (25.3°F).
Average pressure in December
Maryland, NJ
- Average pressure in December: 30.08"Hg
The month with the highest atmospheric pressure is November (30.11"Hg).
The month with the lowest atmospheric pressure is June (29.93"Hg).
Average wind speed in December
Maryland, NJ
- Average wind speed in December: 8.5mph
The windiest month (with the highest average wind speed) is March (9.3mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).
Average humidity in December
Maryland, NJ
- Average humidity in December: 78%
The months with the highest relative humidity are June and October (79%).
The month with the lowest relative humidity is April (73%).
Average rainfall in December
Maryland, NJ
- Average rainfall in December: 2.95"
The wettest month (with the highest rainfall) is July (3.5").
The driest month (with the least rainfall) is September (1.69").
Average rainfall days in December
Maryland, NJ
- Average rainfall days in December: 11 days
The month with the highest number of rainy days is July (18 days).
The month with the least rainy days is January (8.4 days).
Average snowfall in December
Maryland, NJ
- Average snowfall in December: 1.14"
The month with the highest snowfall is March (3.23").
The months with the least snowfall are June, July, August, September and October (0").
Average snowfall days in December
Maryland, NJ
- Average snowfall days in December: 3.2 days
The month with the highest number of snowfall days is January (5.3 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Maryland, NJ
- 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 24min).
- Average sunshine in December: 5h and 0min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is February (Average sunshine: 4h and 48min).
Average sunshine days in December
Maryland, NJ
- Average sunshine days in December: 18.4 days
The month with the most sunshine days is November (19 days).
The month with the least sunshine days is July (10.8 days).
Average UV index in December
Maryland, NJ
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Maryland, NJ
- Average cloud cover in December: 47
The months with the most cloud cover are February, March and December (Cloud cover 47).
The months with the least cloud cover are July and August (Cloud cover 31).
Average visibility in December
Maryland, NJ
- 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).
Maryland, New Jersey, USA
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