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
Gwynn Oak's progression into December includes a drop in the average high-temperature, from a cool 53.1°F (11.7°C) in November to a frosty 43.9°F (6.6°C). Gwynn Oak experiences a steady low-temperature of 33.3°F (0.7°C) throughout December.Humidity
In Gwynn Oak, the average relative humidity in December is 76%.Rainfall
In December, the rain falls for 10.5 days. Throughout December, 2.44" (62mm) of precipitation is accumulated. Throughout the year, there are 160.6 rainfall days, and 31.3" (795mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In December, in Gwynn Oak, it is snowing for 3.5 days. Throughout December, 1.3" (33mm) of snow is accumulated. Throughout the year, there are 18.7 snowfall days, and 8.54" (217mm) of snow is accumulated.Daylight
With an average of 9h and 30min of daylight, December has the shortest days of the year.On the first day of December, sunrise is at 7:08 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 4:53 pm EST.
Sunshine
In December, the average sunshine is 5.2h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for the ordinary person.Note: The average daily UV index of 2 in December transforms into the following instructions:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Notice this! Nearly double the intensity of the Sun's UV radiation can be caused by snow reflection.
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 December?
How many days 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?
How long on average sun shines in December?
What is the month with the lowest UV index?
What is the UV index reading in December?
Average temperature in December
Gwynn Oak, 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
Gwynn Oak, 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
Gwynn Oak, 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
Gwynn Oak, 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
Gwynn Oak, 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
Gwynn Oak, 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
Gwynn Oak, 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
Gwynn Oak, 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
Gwynn Oak, 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
Gwynn Oak, MD
- Average sunshine days in December: 17.3 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
Gwynn Oak, 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
Gwynn Oak, 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
Gwynn Oak, 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).
Gwynn Oak, Maryland, USA
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