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 brings a minor shift in the average high-temperature, adjusting from a fresh 54.7°F (12.6°C) in November to a chilly 46.4°F (8°C). An average low-temperature of 33.3°F (0.7°C) is recorded in the month of December.Humidity
October and December, with an average relative humidity of 77%, are the most humid months in Occoquan.Rainfall
In Occoquan, in December, it is raining for 9.9 days, with typically 2.36" (60mm) of accumulated precipitation. Throughout the year, there are 156.5 rainfall days, and 30.83" (783mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through April and December. December is the first month it typically snows in Occoquan. Throughout December, in the average 1.6 snowfall days, it receives 1.1" (28mm) of snow. Throughout the year, in Occoquan, there are 12.7 snowfall days, and 8.62" (219mm) 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 4:47 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 4:57 pm EST.
Sunshine
The months with the least sunshine in Occoquan are February and December, with an average of 5.2h of sunshine.UV index
The months with the lowest UV index in Occoquan are January, November and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for ordinary individuals.Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
While most people can stay under the sun for an hour without burning, children must always be guarded against sun exposure. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Take precaution! The reflection from snow can almost double the UV radiation of the Sun.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in December in Occoquan?
What are the most humid months in Occoquan?
What is the average humidity in December in Occoquan?
How many days does it rain in December in Occoquan?
When does it start snowing in Occoquan?
What is the month with the shortest days in Occoquan?
What is the average length of the day in December in Occoquan?
When are sunrise and sunset in December in Occoquan?
What is the month with the least sunshine in Occoquan?
How long on average sun shines in December in Occoquan?
What are the months with the lowest UV index in Occoquan?
What is the UV index reading in December in Occoquan?
Average temperature in December
Occoquan, VA
- Average high temperature in December: 46.4°F
The warmest month (with the highest average high temperature) is July (88.2°F).
The month with the lowest average high temperature is January (40.6°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 (27°F).
Average pressure in December
Occoquan, 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
Occoquan, VA
- Average wind speed in December: 6.2mph
The windiest month (with the highest average wind speed) is March (7.3mph).
The calmest month (with the lowest average wind speed) is August (4.7mph).
Average humidity in December
Occoquan, VA
- Average humidity in December: 77%
The months with the highest relative humidity are October and December (77%).
The month with the lowest relative humidity is July (71%).
Average rainfall in December
Occoquan, VA
- Average rainfall in December: 2.36"
The wettest month (with the highest rainfall) is August (3.98").
The driest month (with the least rainfall) is January (1.73").
Average rainfall days in December
Occoquan, VA
- Average rainfall days in December: 9.9 days
The months with the highest number of rainy days are May and August (17.8 days).
The month with the least rainy days is November (7.7 days).
Average snowfall in December
Occoquan, VA
- Average snowfall in December: 1.1"
The month with the highest snowfall is January (3.23").
The months with the least snowfall are May, June, July, August, September, October and November (0").
Average snowfall days in December
Occoquan, VA
- Average snowfall days in December: 1.6 days
The month with the highest number of snowfall days is February (4.1 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
Occoquan, 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 48min).
The months with the least sunshine are February and December (Average sunshine: 5h and 12min).
Average sunshine days in December
Occoquan, VA
- Average sunshine days in December: 19 days
The month with the most sunshine days is November (20.5 days).
The month with the least sunshine days is August (10.4 days).
Average UV index in December
Occoquan, 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, November and December (UV index 2).
Average cloud cover in December
Occoquan, VA
- Average cloud cover in December: 44
The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 31).
Average visibility in December
Occoquan, VA
- 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).
Occoquan, Virginia, USA
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