December weather forecast
Mechanicsville, VA

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Weather in December

December, the first month of the winter in Mechanicsville, is still a chilly month, with an average temperature ranging between min 35.1°F (1.7°C) and max 49.1°F (9.5°C).

Temperature

With December's onset, the weather reveals a slight temperature decrease, transitioning from a refreshing 57°F (13.9°C) in November to a frosty 49.1°F (9.5°C). The month of December records an average low-temperature of 35.1°F (1.7°C).

Humidity

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

Rainfall

In Mechanicsville, during December, the rain falls for 10.9 days and regularly aggregates up to 2.52" (64mm) of precipitation. Throughout the year, there are 154.5 rainfall days, and 30.35" (771mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through April, November and December. In Mechanicsville, in December, snow falls for 1.5 days, with typically accumulated 1.65" (42mm) of snow. In Mechanicsville, during the entire year, snow falls for 10.1 days and aggregates up to 7.2" (183mm) of snow.

Daylight

The month with the shortest days in Mechanicsville is December, with an average of 9h and 36min of daylight.
On the first day of the month, sunrise is at 7:06 am and sunset at 4:51 pm. On the last day of December, sunrise is at 7:24 am and sunset at 5:01 pm EST.

Sunshine

December has the least sunshine of the year, with an average of 5.1h of sunshine.

UV index

January and December, with an average maximum UV index of 2, are months with the lowest UV index in Mechanicsville. A UV Index value of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV radiation for the average person.
Note: In December, the average maximum UV index of 2 translates into the following recommendations:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. Considering the Sun's intensity during midday, it's wise to minimize direct exposure. Employ a hat with a wide brim for robust protection, cutting UV exposure by half. Alert! The snow's reflection can amplify the UV radiation of the Sun nearly twice.
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Frequently asked questions

What are December temperatures in Mechanicsville?

The high-temperature in Mechanicsville during December is 49.1°F (9.5°C) and the low-temperature is 35.1°F (1.7°C). In September, the average heat index (a.k.a. 'feels like', 'real feel'), which combines relative humidity and air temperature, is calculated to be 86°F (30°C).

What is the most humid month in Mechanicsville?

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

What is the average humidity in December in Mechanicsville?

In Mechanicsville, the average relative humidity in December is 78%.

How much does it rain in Mechanicsville in December?

In Mechanicsville, Virginia, during December, the rain falls for 10.9 days and regularly aggregates up to 2.52" (64mm) of precipitation.

How many days does it snow in December in Mechanicsville?

In Mechanicsville, Virginia, in December, snow falls for 1.5 days, with typically accumulated 1.65" (42mm) of snow.

What is the month with the shortest days in Mechanicsville?

With an average of 9h and 36min of daylight, December has the shortest days of the year in Mechanicsville, Virginia.

How many hours of daylight does Mechanicsville have in December?

In December, the average day length in Mechanicsville is 9h and 37min.

What time are sunrise and sunset in December in Mechanicsville?

In December, on the first day of the month, sunrise is at 7:06 am and sunset at 4:51 pm. On the last day of the month, in Mechanicsville, Virginia, sunrise is at 7:24 am and sunset at 5:01 pm EST.

What is the month with the least sunshine in Mechanicsville?

With an average of 5.1h of sunshine, December has the least sunshine of the year.

How many hours of sunshine does Mechanicsville have in December?

The average sunshine duration in December in Mechanicsville, Virginia, is 5.1h.

When is the lowest UV index in Mechanicsville?

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

What is the UV index intensity in December in Mechanicsville?

The average daily maximum UV index in December is 2. A UV Index value of 2, and less, symbolizes a minimal hazard to health from unprotected exposure to 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
Mechanicsville, VA

Average temperature in December - Mechanicsville, VA
  • Average high temperature in December: 49.1°F

The warmest month (with the highest average high temperature) is July (90.9°F).
The month with the lowest average high temperature is January (44.6°F).

  • Average low temperature in December: 35.1°F

The month with the highest average low temperature is July (70.2°F).
The coldest month (with the lowest average low temperature) is January (29.7°F).

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Average pressure in December
Mechanicsville, VA

Average pressure in December - Mechanicsville, 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 (29.95"Hg).

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Average wind speed in December
Mechanicsville, VA

Average wind speed in December - Mechanicsville, VA
  • Average wind speed in December: 6mph

The windiest month (with the highest average wind speed) is April (7.5mph).
The calmest month (with the lowest average wind speed) is August (5.3mph).

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Average humidity in December
Mechanicsville, VA

Average humidity in December - Mechanicsville, 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 (68%).

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Average rainfall in December
Mechanicsville, VA

Average rainfall in December - Mechanicsville, VA
  • Average rainfall in December: 2.52"

The wettest month (with the highest rainfall) is August (2.87").
The driest month (with the least rainfall) is September (1.73").

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Average rainfall days in December
Mechanicsville, VA

Average rainfall days in December - Mechanicsville, VA
  • Average rainfall days in December: 10.9 days

The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is November (9.7 days).

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Average snowfall in December
Mechanicsville, VA

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

The month with the highest snowfall is January (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in December
Mechanicsville, VA

Average snowfall days in December - Mechanicsville, VA
  • Average snowfall days in December: 1.5 days

The month with the highest number of snowfall days is January (3.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in December /
Average sunshine in December
Mechanicsville, VA

Average daylight in December / Average sunshine in December - Mechanicsville, 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 36min).

  • Average sunshine in December: 5h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 5h and 6min).

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Average sunshine days in December
Mechanicsville, VA

Average sunshine days in December - Mechanicsville, VA
  • Average sunshine days in December: 18.6 days

The month with the most sunshine days is October (19.5 days).
The month with the least sunshine days is May (12.1 days).

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Average UV index in December
Mechanicsville, VA

Average UV index in December - Mechanicsville, VA
  • Average UV index in December: 2

The month with the highest UV index is July (UV index 7).
The months with the lowest UV index are January and December (UV index 2).

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Average cloud cover in December
Mechanicsville, VA

Average cloud cover in December - Mechanicsville, VA
  • Average cloud cover in December: 45

The month with the most cloud cover is March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 32).

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Average visibility in December
Mechanicsville, VA

Average visibility in December - Mechanicsville, VA
  • Average visibility in December: 5mi

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

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Mechanicsville, Virginia, USA

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