December weather forecast
Union Bridge, MD

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Weather in December

The first month of the winter, December, is also a wintry month in Union Bridge, Maryland, with an average temperature ranging between max 42.6°F (5.9°C) and min 30.4°F (-0.9°C).

Temperature

The advent of December brings a subtle shift in temperature, with the average high moving from a fresh 51.3°F (10.7°C) in November to a wintry 42.6°F (5.9°C). Nighttime temperatures in December average to a freezing cold 30.4°F (-0.9°C) in Union Bridge.

Humidity

In December, the average relative humidity in Union Bridge, Maryland, is 79%.

Rainfall

In Union Bridge, in December, it is raining for 9.8 days, with typically 1.77" (45mm) of accumulated precipitation. In Union Bridge, Maryland, during the entire year, the rain falls for 157.5 days and collects up to 27.52" (699mm) of precipitation.

Snowfall

January through May, October through December are months with snowfall. In Union Bridge, in December, snow falls for 3.9 days, with typically accumulated 1.57" (40mm) of snow. In Union Bridge, Maryland, during the entire year, snow falls for 22.3 days and aggregates up to 9.76" (248mm) of snow.

Daylight

December has the shortest days of the year in Union Bridge, with an average of 9h and 24min of daylight.
On the first day of the month, sunrise is at 7:10 am and sunset at 4:45 pm. On the last day of December, in Union Bridge, sunrise is at 7:29 am and sunset at 4:54 pm EST.

Sunshine

The average sunshine in December is 5h.

UV index

The months with the lowest UV index in Union Bridge, Maryland, are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.
Note: In December, a regular UV index of 2 translates into these guidelines:
Although prolonged sun exposure does not typically bother most people, children, babies, and those with sensitive skin should always have protection. The midday Sun can be harmful due to its potent UV radiation; seek shade and reduce exposure. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Observe! Snow reflection can nearly intensify the Sun's UV radiation twofold.
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Frequently asked questions

How cold does it get in Union Bridge in December?

The high-temperature in Union Bridge during December is 42.6°F (5.9°C) and the low-temperature is 30.4°F (-0.9°C). In August, the average heat index (a.k.a. 'feels like', 'real feel'), which factors the actual air temperature with the relative humidity, is calculated to be 87.8°F (31°C).

What is the average humidity in December in Union Bridge?

The average relative humidity in December is 79%.

How much does it rain in Union Bridge in December?

In Union Bridge, Maryland, in December, it is raining for 9.8 days, with typically 1.77" (45mm) of accumulated precipitation.

How much does it snow in Union Bridge in December?

In Union Bridge, in December, during 3.9 snowfall days, 1.57" (40mm) of snow is typically accumulated.

What is the month with the shortest days in Union Bridge?

December has the shortest days of the year in Union Bridge, with an average of 9h and 24min of daylight.

How many hours of daylight does Union Bridge have in December?

In December, the average day length in Union Bridge, Maryland, is 9h and 26min.

When are sunrise and sunset in December in Union Bridge?

On the first day of December in Union Bridge, Maryland, sunrise is at 7:10 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 4:54 pm EST.

How many hours of sunshine does Union Bridge have in December?

The average sunshine duration in December is 5h.

When is the lowest UV index in Union Bridge?

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

What is the UV index reading in December in Union Bridge?

The average daily maximum UV index in December in Union Bridge is 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to Sun's UV rays.
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
Union Bridge, MD

Average temperature in December - Union Bridge, MD
  • Average high temperature in December: 42.6°F

The warmest month (with the highest average high temperature) is July (84°F).
The month with the lowest average high temperature is January (36.7°F).

  • Average low temperature in December: 30.4°F

The month with the highest average low temperature is July (64.6°F).
The coldest month (with the lowest average low temperature) is January (23.5°F).

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Average pressure in December
Union Bridge, MD

Average pressure in December - Union Bridge, MD
  • 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).

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Average wind speed in December
Union Bridge, MD

Average wind speed in December - Union Bridge, MD
  • Average wind speed in December: 7.7mph

The windiest month (with the highest average wind speed) is March (8.4mph).
The calmest months (with the lowest average wind speed) are July and August (5mph).

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Average humidity in December
Union Bridge, MD

Average humidity in December - Union Bridge, MD
  • Average humidity in December: 79%

The month with the highest relative humidity is May (80%).
The month with the lowest relative humidity is April (75%).

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Average rainfall in December
Union Bridge, MD

Average rainfall in December - Union Bridge, MD
  • Average rainfall in December: 1.77"

The wettest month (with the highest rainfall) is August (3.23").
The driest month (with the least rainfall) is February (1.61").

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Average rainfall days in December
Union Bridge, MD

Average rainfall days in December - Union Bridge, MD
  • Average rainfall days in December: 9.8 days

The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (7.6 days).

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Average snowfall in December
Union Bridge, MD

Average snowfall in December - Union Bridge, MD
  • Average snowfall in December: 1.57"

The month with the highest snowfall is March (3.03").
The months with the least snowfall are June, July, August and September (0").

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Average snowfall days in December
Union Bridge, MD

Average snowfall days in December - Union Bridge, MD
  • Average snowfall days in December: 3.9 days

The month with the highest number of snowfall days is January (6.7 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Union Bridge, MD

Average daylight in December / Average sunshine in December - Union Bridge, MD
  • Average daylight in December: 9h and 2min

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 24min).

  • 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 February (Average sunshine: 4h and 42min).

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Average sunshine days in December
Union Bridge, MD

Average sunshine days in December - Union Bridge, MD
  • Average sunshine days in December: 18.1 days

The month with the most sunshine days is November (19.2 days).
The month with the least sunshine days is May (10.8 days).

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Average UV index in December
Union Bridge, MD

Average UV index in December - Union Bridge, MD
  • 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).

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Average cloud cover in December
Union Bridge, MD

Average cloud cover in December - Union Bridge, MD
  • Average cloud cover in December: 47

The months with the most cloud cover are February and March (Cloud cover 48).
The month with the least cloud cover is July (Cloud cover 31).

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Average visibility in December
Union Bridge, MD

Average visibility in December - Union Bridge, MD
  • 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).

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Union Bridge, Maryland, USA

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