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
The advent of December brings a slight shift in average high-temperature, moving from a fresh 52.5°F (11.4°C) in November to a chilly 43.7°F (6.5°C). Nighttime temperatures consistently average a subzero cold 30°F (-1.1°C) during December.Humidity
In December, the average relative humidity is 78%.Rainfall
In December, the rain falls for 10.9 days. Throughout December, 2.4" (61mm) of precipitation is accumulated. In Markham, during the entire year, the rain falls for 166.6 days and collects up to 29.57" (751mm) of precipitation.Snowfall
Months with snowfall are January through May, October through December. In December, in Markham, it is snowing for 3.8 days. Throughout December, 2.64" (67mm) of snow is accumulated. Throughout the year, in Markham, there are 23.1 snowfall days, and 14.45" (367mm) 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 7:12 am and sunset at 4:50 pm. On the last day of December, sunrise is at 7:30 am and sunset at 5:00 pm EST.
Sunshine
The month with the least sunshine in Markham is December, with an average of 5h of sunshine.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 value of 2, and less, symbolizes a minimal health vulnerability from exposure to the Sun's UV rays for the average person.Note: The daily high UV index of 2 in December translates into this advice:
Long-term sun exposure is typically not a concern for most. However, those with sensitive skin, infants, and children must always have protection. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Take note! UV radiation from the Sun can double in intensity due to snow reflection.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is December cold?
What is the average humidity in December?
How many days does it rain in December?
How many days does it snow in December?
What is the month with the shortest days in Markham?
What is the average length of the day in December?
When is the sunrise / sunset in December?
What is the month with the least sunshine?
How long on average sun shines in December?
What is the month with the lowest UV index?
What is the UV index intensity in December?
Average temperature in December
Markham, VA
- Average high temperature in December: 43.7°F
The warmest month (with the highest average high temperature) is July (86°F).
The month with the lowest average high temperature is January (38.7°F).
- Average low temperature in December: 30°F
The month with the highest average low temperature is July (63.7°F).
The coldest month (with the lowest average low temperature) is January (24.3°F).
Average pressure in December
Markham, VA
- 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
Markham, VA
- Average wind speed in December: 5.9mph
The windiest month (with the highest average wind speed) is March (6.9mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in December
Markham, VA
- Average humidity in December: 78%
The month with the highest relative humidity is October (79%).
The months with the lowest relative humidity are April, June and July (74%).
Average rainfall in December
Markham, VA
- Average rainfall in December: 2.4"
The wettest month (with the highest rainfall) is May (3.23").
The driest month (with the least rainfall) is January (1.85").
Average rainfall days in December
Markham, VA
- Average rainfall days in December: 10.9 days
The month with the highest number of rainy days is May (18.6 days).
The month with the least rainy days is January (9.3 days).
Average snowfall in December
Markham, VA
- Average snowfall in December: 2.64"
The month with the highest snowfall is March (3.82").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Markham, VA
- Average snowfall days in December: 3.8 days
The month with the highest number of snowfall days is January (7.8 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Markham, VA
- 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 0min
The month with the most sunshine is July (Average sunshine: 10h and 36min).
The month with the least sunshine is December (Average sunshine: 5h and 0min).
Average sunshine days in December
Markham, VA
- Average sunshine days in December: 17.2 days
The month with the most sunshine days is November (19.1 days).
The months with the least sunshine days are May and July (10.8 days).
Average UV index in December
Markham, VA
- 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
Markham, VA
- 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
Markham, VA
- Average visibility in December: 6mi
The months with the highest visibility are April, June, July, August, November and December (6mi).
The months with the lowest visibility are January, February, March, May, September and October (5mi).
Markham, Virginia, USA
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