December weather forecastMorris Hills, MD
December
Weather in December
The first month of the winter, December, is also a frosty month in Morris Hills, Maryland, with an average temperature varying between 34.5°F (1.4°C) and 45.5°F (7.5°C).Temperature
In December, the meteorological conditions change slightly, with the average high-temperature moving from a fresh 53.6°F (12°C) in November to a chilly 45.5°F (7.5°C). During the month of December, Morris Hills's nighttime temperature lowers to an average of 34.5°F (1.4°C).Humidity
In December, the average relative humidity is 76%.Rainfall
In Morris Hills, Maryland, during December, the rain falls for 10.4 days and regularly aggregates up to 2.32" (59mm) of precipitation. In Morris Hills, during the entire year, the rain falls for 157.2 days and collects up to 30.47" (774mm) of precipitation.Snowfall
January through March, November and December are months with snowfall. In Morris Hills, in December, snow falls for 2.1 days, with typically accumulated 0.39" (10mm) of snow. Throughout the year, there are 11.9 snowfall days, and 5.75" (146mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 7:07 am and sunset at 4:43 pm. On the last day of December, sunrise is at 7:25 am and sunset at 4:53 pm EST.
Sunshine
The average sunshine in December is 5.2h.UV index
January, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Morris Hills. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for ordinary individuals.Note: The daily high UV index of 2 in December translates into this advice:
Most people face no serious problems with extended sun exposure, but those with fair skin, infants, and children always need protection. When the Sun is at its strongest around midday, find shade and limit exposure. Safeguard your eyes, ears, and face from sun rays with the aid of a wide-brim hat. Be vigilant! The reflective nature of snow can increase the Sun's UV radiation nearly twofold.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Morris Hills, MD
- Average high temperature in December: 45.5°F
The warmest month (with the highest average high temperature) is July (85.5°F).
The month with the lowest average high temperature is January (38.8°F).
- Average low temperature in December: 34.5°F
The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (27.7°F).
Average pressure in December
Morris Hills, 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 (29.94"Hg).
Average wind speed in December
Morris Hills, MD
- Average wind speed in December: 8.5mph
The windiest months (with the highest average wind speed) are January, February and March (9.1mph).
The calmest months (with the lowest average wind speed) are July and August (5.8mph).
Average humidity in December
Morris Hills, MD
- Average humidity in December: 76%
The month with the highest relative humidity is May (77%).
The months with the lowest relative humidity are March, April and July (72%).
Average rainfall in December
Morris Hills, MD
- Average rainfall in December: 2.32"
The wettest month (with the highest rainfall) is August (4.09").
The driest month (with the least rainfall) is January (1.81").
Average rainfall days in December
Morris Hills, MD
- Average rainfall days in December: 10.4 days
The month with the highest number of rainy days is May (18 days).
The months with the least rainy days are January and November (8.4 days).
Average snowfall in December
Morris Hills, MD
- Average snowfall in December: 0.39"
The month with the highest snowfall is January (2.09").
The months with the least snowfall are April, May, June, July, August, September and October (0").
Average snowfall days in December
Morris Hills, MD
- Average snowfall days in December: 2.1 days
The month with the highest number of snowfall days is January (3.8 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
Morris Hills, MD
- Average daylight in December: 9h and 30min
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 12min
The month with the most sunshine is July (Average sunshine: 10h and 54min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).
Average sunshine days in December
Morris Hills, MD
- Average sunshine days in December: 18.4 days
The month with the most sunshine days is November (19.9 days).
The months with the least sunshine days are May and July (10.8 days).
Average UV index in December
Morris Hills, 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
Morris Hills, 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
Morris Hills, 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).
