December weather forecast
Dundas, VA

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Weather in December

December, the first month of the winter in Dundas, is still a chilly month, with an average temperature fluctuating between 35.1°F (1.7°C) and 49.5°F (9.7°C).

Temperature

As November transitions into December, Dundas sees a gentle drop in the average high-temperature, transitioning from a refreshing 56.8°F (13.8°C) to a chilly 49.5°F (9.7°C). Dundas observes an average low-temperature of 35.1°F (1.7°C) during December.

Humidity

With an average relative humidity of 78%, December is the most humid month.

Rainfall

In Dundas, in December, it is raining for 10.5 days, with typically 2.36" (60mm) of accumulated precipitation. Throughout the year, there are 153.1 rainfall days, and 28.7" (729mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, October through December. In Dundas, in December, during 1.3 snowfall days, 1.65" (42mm) of snow is typically accumulated. In Dundas, during the entire year, snow falls for 10.5 days and aggregates up to 8.23" (209mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 42min of daylight.
On the first day of the month, sunrise is at 7:07 am and sunset at 4:55 pm. On the last day of December, sunrise is at 7:24 am and sunset at 5:05 pm EST.

Sunshine

With an average of 5.3h of sunshine, December has the least sunshine of the year.

UV index

The months with the lowest UV index are January, February and December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a low threat to health from exposure to the Sun's UV radiation for ordinary individuals.
Note: The maximum daily UV index, 2 in December, converts into the following recommendations:
Extended sunlight exposure does not pose significant problems for most people, except for children, infants, and people with fair skin who always need shielding. The intensity of the Sun's UV radiation during midday suggests reducing time spent outdoors. For optimum UV protection, wear sun-resistant attire complemented with a hat and quality shades. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.

Frequently asked questions

What are December temperatures?

The high-temperature, in December, in Dundas, records 49.5°F (9.7°C), while the low-temperature is 35.1°F (1.7°C). The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which represents the influence of relative humidity on air temperature, in September is computed to be 86°F (30°C).

What is the most humid month?

December is the most humid month, with an average relative humidity of 78%.

What is the average humidity in December?

In December, the average relative humidity is 78%.

How much does it rain in December?

In Dundas, during December, the rain falls for 10.5 days and regularly aggregates up to 2.36" (60mm) of precipitation.

How many days does it snow in December?

In Dundas, during December, snow falls for 1.3 days and regularly aggregates up to 1.65" (42mm) of snow.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 42min of daylight.

What is the average length of the day in December?

In Dundas, the average day length in December is 9h and 41min.

What time are sunrise and sunset in December?

On the first day of December, sunrise is at 7:07 am and sunset at 4:55 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 5:05 pm EST.

What is the month with the least sunshine?

December has the least sunshine of the year, with an average of 5.3h of sunshine.

How many hours of sunshine does Dundas have in December?

In December, the average sunshine duration is 5.3h.

What are the months with the lowest UV index?

January, February and December, with an average maximum UV index of 2, are months with the lowest UV index.

How high is the UV index in December?

In December, the average daily maximum UV index is 2. A UV Index estimate of 2, and below, represents a low health threat from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Dundas, VA

Average temperature in December - Dundas, VA
  • Average high temperature in December: 49.5°F

The warmest month (with the highest average high temperature) is July (90°F).
The month with the lowest average high temperature is January (45.1°F).

  • Average low temperature in December: 35.1°F

The month with the highest average low temperature is July (68.9°F).
The coldest month (with the lowest average low temperature) is January (30°F).

Average pressure in December
Dundas, VA

Average pressure in December - Dundas, VA
  • Average pressure in December: 30.13"Hg

The month with the highest atmospheric pressure is November (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.96"Hg).

Average wind speed in December
Dundas, VA

Average wind speed in December - Dundas, VA
  • Average wind speed in December: 6.5mph

The windiest month (with the highest average wind speed) is April (7.8mph).
The calmest month (with the lowest average wind speed) is August (5.2mph).

Average humidity in December
Dundas, VA

Average humidity in December - Dundas, VA
  • Average humidity in December: 78%

The month with the highest relative humidity is December (78%).
The month with the lowest relative humidity is July (71%).

Average rainfall in December
Dundas, VA

Average rainfall in December - Dundas, VA
  • Average rainfall in December: 2.36"

The wettest months (with the highest rainfall) are March, May and November (2.68").
The driest month (with the least rainfall) is September (1.93").

Average rainfall days in December
Dundas, VA

Average rainfall days in December - Dundas, VA
  • Average rainfall days in December: 10.5 days

The month with the highest number of rainy days is May (16.9 days).
The month with the least rainy days is January (9.3 days).

Average snowfall in December
Dundas, VA

Average snowfall in December - Dundas, VA
  • Average snowfall in December: 1.65"

The month with the highest snowfall is March (2.2").
The months with the least snowfall are May, June, July, August and September (0").

Average snowfall days in December
Dundas, VA

Average snowfall days in December - Dundas, VA
  • Average snowfall days in December: 1.3 days

The month with the highest number of snowfall days is February (3.5 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
Dundas, VA

Average daylight in December / Average sunshine in December - Dundas, VA
  • Average daylight in December: 9h and 4min

The month with the longest days is June (Average daylight: 14h and 42min).
The month with the shortest days is December (Average daylight: 9h and 42min).

  • Average sunshine in December: 5h and 2min

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 18min).

Average sunshine days in December
Dundas, VA

Average sunshine days in December - Dundas, VA
  • Average sunshine days in December: 18.7 days

The month with the most sunshine days is October (19.9 days).
The month with the least sunshine days is May (12.3 days).

Average UV index in December
Dundas, VA

Average UV index in December - Dundas, 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 and December (UV index 2).

Average cloud cover in December
Dundas, VA

Average cloud cover in December - Dundas, VA
  • Average cloud cover in December: 43

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 32).

Average visibility in December
Dundas, VA

Average visibility in December - Dundas, VA
  • Average visibility in December: 6mi

The months with the highest visibility are January, February, March, April, June, July, August, October, November and December (6mi).
The months with the lowest visibility are May and September (5mi).

Dundas, Virginia, USA

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