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
During the shift to December, a minor reduction in average high-temperature is observed, shifting from a cool 51.3°F (10.7°C) in November to a frosty 43.2°F (6.2°C). Throughout December nights, Mount Jackson experiences a consistent temperature average of 28.9°F (-1.7°C).Humidity
The average relative humidity in December is 78%.Rainfall
In Mount Jackson, during December, the rain falls for 9.5 days and regularly aggregates up to 1.61" (41mm) of precipitation. Throughout the year, in Mount Jackson, there are 154 rainfall days, and 23.43" (595mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April, October through December. In December, it is snowing for 3.5 days. Throughout December, 2.13" (54mm) of snow is accumulated. Throughout the year, there are 20.9 snowfall days, and 12.52" (318mm) 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 7:14 am and sunset at 4:53 pm. On the last day of December, sunrise is at 7:32 am and sunset at 5:03 pm EST.
Sunshine
The month with the least sunshine in Mount Jackson is December, with an average of 5.1h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Mount Jackson. A UV Index of 2, and less, symbolizes a low health risk from unsafe exposure to UV radiation for the average person.Note: In December, the average maximum UV index of 2 translates into the following recommendations:
Prolonged sun exposure generally does not trouble most people. However, it is vital to ensure protection for babies, children, and individuals with sensitive skin. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. Arm yourself against UV rays' harm with protective apparel and UV-filtering shades. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Frequently asked questions
Is it cold in Mount Jackson during December?
What is the average humidity in December in Mount Jackson?
How many days does it rain in December in Mount Jackson?
How many days does it snow in December in Mount Jackson?
What is the month with the shortest days in Mount Jackson?
What is the average length of the day in December in Mount Jackson?
When are sunrise and sunset in December in Mount Jackson?
What is the month with the least sunshine in Mount Jackson?
How long on average sun shines in December in Mount Jackson?
When is the lowest UV index in Mount Jackson?
What is the UV index reading in December in Mount Jackson?
Average temperature in December
Mount Jackson, VA
- Average high temperature in December: 43.2°F
The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (37.9°F).
- Average low temperature in December: 28.9°F
The month with the highest average low temperature is July (61.7°F).
The coldest month (with the lowest average low temperature) is January (23°F).
Average pressure in December
Mount Jackson, VA
- Average pressure in December: 30.12"Hg
The month with the highest atmospheric pressure is November (30.14"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).
Average wind speed in December
Mount Jackson, VA
- Average wind speed in December: 5.8mph
The windiest month (with the highest average wind speed) is February (6.9mph).
The calmest month (with the lowest average wind speed) is August (4.2mph).
Average humidity in December
Mount Jackson, VA
- Average humidity in December: 78%
The months with the highest relative humidity are September and October (79%).
The months with the lowest relative humidity are January, April, June, July and November (75%).
Average rainfall in December
Mount Jackson, VA
- Average rainfall in December: 1.61"
The wettest month (with the highest rainfall) is May (2.95").
The driest months (with the least rainfall) are January and November (1.3").
Average rainfall days in December
Mount Jackson, VA
- Average rainfall days in December: 9.5 days
The month with the highest number of rainy days is August (18 days).
The month with the least rainy days is January (8.3 days).
Average snowfall in December
Mount Jackson, VA
- Average snowfall in December: 2.13"
The month with the highest snowfall is February (3.39").
The months with the least snowfall are May, June, July, August and September (0").
Average snowfall days in December
Mount Jackson, VA
- Average snowfall days in December: 3.5 days
The month with the highest number of snowfall days is January (6.1 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Mount Jackson, VA
- Average daylight in December: 9h and 3min
The month with the longest days is June (Average daylight: 14h and 48min).
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 36min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).
Average sunshine days in December
Mount Jackson, VA
- Average sunshine days in December: 18.2 days
The month with the most sunshine days is November (20.2 days).
The month with the least sunshine days is May (11 days).
Average UV index in December
Mount Jackson, VA
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Mount Jackson, VA
- Average cloud cover in December: 45
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
Mount Jackson, VA
- Average visibility in December: 5mi
The months with the highest visibility are January, February, April, June, July and November (6mi).
The months with the lowest visibility are March, May, August, September, October and December (5mi).
Mount Jackson, Virginia, USA
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