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
December is characterized by a slight reduction in average high-temperature, easing from a cool 53.4°F (11.9°C) in November to a chilly 45.5°F (7.5°C). December nights in North Potomac are marked by an average temperature drop to an icy 32.9°F (0.5°C).Humidity
The months with the highest humidity in North Potomac are October and December, with an average relative humidity of 76%.Rainfall
In North Potomac, during December, the rain falls for 9.8 days and regularly aggregates up to 2.36" (60mm) of precipitation. Throughout the year, there are 156.5 rainfall days, and 30.71" (780mm) of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall. In North Potomac, in December, during 2.5 snowfall days, 1.57" (40mm) of snow is typically accumulated. In North Potomac, during the entire year, snow falls for 15.5 days and aggregates up to 10.24" (260mm) of snow.Daylight
The month with the shortest days in North Potomac is December, with an average of 9h and 30min of daylight.On the first day of December, sunrise is at 7:09 am and sunset at 4:46 pm. On the last day of the month, sunrise is at 7:27 am and sunset at 4:56 pm EST.
Sunshine
The average sunshine in December in North Potomac 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 in North Potomac. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV radiation for the average person.Note: In December, a daily UV index of 2 turns into the following recommendations:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Experience reduced UV exposure by about half when donning a wide-brim hat. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Frequently asked questions
What are December temperatures in North Potomac?
What are the most humid months in North Potomac?
What is the average humidity in December in North Potomac?
How many days does it rain in December in North Potomac?
How many days does it snow in December in North Potomac?
What is the month with the shortest days in North Potomac?
How many hours of daylight does North Potomac have in December?
What time are sunrise and sunset in December in North Potomac?
How long on average sun shines in December in North Potomac?
What are the months with the lowest UV index in North Potomac?
What is the UV index reading in December in North Potomac?
Average temperature in December
North Potomac, MD
- Average high temperature in December: 45.5°F
The warmest month (with the highest average high temperature) is July (87.4°F).
The month with the lowest average high temperature is January (39.4°F).
- Average low temperature in December: 32.9°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 (26.4°F).
Average pressure in December
North Potomac, 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 (29.95"Hg).
Average wind speed in December
North Potomac, MD
- Average wind speed in December: 6.9mph
The windiest month (with the highest average wind speed) is March (7.8mph).
The calmest month (with the lowest average wind speed) is August (4.9mph).
Average humidity in December
North Potomac, MD
- Average humidity in December: 76%
The months with the highest relative humidity are October and December (76%).
The month with the lowest relative humidity is July (69%).
Average rainfall in December
North Potomac, MD
- Average rainfall in December: 2.36"
The wettest month (with the highest rainfall) is August (3.86").
The driest month (with the least rainfall) is February (1.93").
Average rainfall days in December
North Potomac, MD
- Average rainfall days in December: 9.8 days
The month with the highest number of rainy days is August (17.3 days).
The month with the least rainy days is January (8.1 days).
Average snowfall in December
North Potomac, MD
- Average snowfall in December: 1.57"
The month with the highest snowfall is March (3.03").
The months with the least snowfall are May, June, July, August, September and October (0").
Average snowfall days in December
North Potomac, MD
- Average snowfall days in December: 2.5 days
The month with the highest number of snowfall days is February (4.8 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
North Potomac, 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
North Potomac, MD
- Average sunshine days in December: 18.4 days
The month with the most sunshine days is November (19.9 days).
The month with the least sunshine days is May (11.7 days).
Average UV index in December
North Potomac, 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
North Potomac, MD
- Average cloud cover in December: 46
The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in December
North Potomac, MD
- Average visibility in December: 6mi
The months with the highest visibility are January, February, March, April, June, July, August, September, October, November and December (6mi).
The month with the lowest visibility is May (5mi).
North Potomac, Maryland, USA
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