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 December arrives, Glenmar's weather displays a decrease in high-temperatures, transitioning from November's cool 53.1°F (11.7°C) to a frosty 43.9°F (6.6°C). An average low-temperature of 33.3°F (0.7°C) is noted during the nights in December.Humidity
In Glenmar, the average relative humidity in December is 76%.Rainfall
In Glenmar, in December, it is raining for 10.5 days, with typically 2.44" (62mm) of accumulated precipitation. Throughout the year, there are 160.9 rainfall days, and 31.42" (798mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In Glenmar, in December, during 3.5 snowfall days, 1.3" (33mm) of snow is typically accumulated. Throughout the year, in Glenmar, there are 18.7 snowfall days, and 8.54" (217mm) of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 9h and 30min of daylight.On the first day of the month, sunrise is at 7:08 am and sunset at 4:44 pm. On the last day of December, in Glenmar, sunrise is at 7:26 am and sunset at 4:54 pm EST.
Sunshine
In December, the average sunshine is 5.1h.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for average individuals.Note: An average maximum UV index of 2 in December leads to these recommendations:
Unlike children, who always need sun protection, most individuals can remain in the sun for up to an hour without getting burnt. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. For effective sun eye protection, rely on sunglasses certified for UVA and UVB resistance. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold does it get in December?
What is the average humidity in December?
How much does it rain in Glenmar in December?
How much does it snow in December?
What is the month with the shortest days?
How many hours of daylight does Glenmar have in December?
When is the sunrise / sunset in December?
How many hours of sunshine does Glenmar have in December?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Glenmar, MD
- Average high temperature in December: 43.9°F
The warmest month (with the highest average high temperature) is July (85.3°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in December: 33.3°F
The month with the highest average low temperature is July (68.5°F).
The coldest month (with the lowest average low temperature) is January (26.1°F).
Average pressure in December
Glenmar, 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
Glenmar, MD
- Average wind speed in December: 8.1mph
The windiest month (with the highest average wind speed) is March (8.9mph).
The calmest months (with the lowest average wind speed) are July and August (5.5mph).
Average humidity in December
Glenmar, MD
- Average humidity in December: 76%
The month with the highest relative humidity is May (78%).
The month with the lowest relative humidity is July (72%).
Average rainfall in December
Glenmar, MD
- Average rainfall in December: 2.44"
The wettest month (with the highest rainfall) is August (3.94").
The driest months (with the least rainfall) are January and February (2.01").
Average rainfall days in December
Glenmar, MD
- Average rainfall days in December: 10.5 days
The month with the highest number of rainy days is July (18.3 days).
The month with the least rainy days is February (8.8 days).
Average snowfall in December
Glenmar, MD
- Average snowfall in December: 1.3"
The month with the highest snowfall is March (2.72").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
Glenmar, MD
- Average snowfall days in December: 3.5 days
The months with the highest number of snowfall days are January and February (5.3 days).
The months with the least snowfall days are May, June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Glenmar, 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 0min).
Average sunshine days in December
Glenmar, MD
- Average sunshine days in December: 17.4 days
The month with the most sunshine days is November (19.4 days).
The month with the least sunshine days is May (10.7 days).
Average UV index in December
Glenmar, 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, November and December (UV index 2).
Average cloud cover in December
Glenmar, MD
- Average cloud cover in December: 45
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 30).
Average visibility in December
Glenmar, 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).
Glenmar, Maryland, USA
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