December weather forecast
Union Bridge, MD

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Weather in December

The first month of the winter, December, is still a cold 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

December signals a slight drop in average high-temperature, sliding from November's fresh 51.3°F (10.7°C) to a cold 42.6°F (5.9°C). Union Bridge encounters a steady low-temperature average of 30.4°F (-0.9°C) throughout the month of December.

Humidity

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

Rainfall

In Union Bridge, in December, during 9.8 rainfall days, 1.77" (45mm) of precipitation is typically accumulated. Throughout the year, there are 157.5 rainfall days, and 27.52" (699mm) of precipitation is accumulated.

Snowfall

January through May, October through December are months with snowfall. In Union Bridge, in December, during 3.9 snowfall days, 1.57" (40mm) of snow is typically accumulated. Throughout the year, there are 22.3 snowfall days, and 9.76" (248mm) of snow is accumulated.

Daylight

With an average of 9h and 24min of daylight, December has the shortest days of the year.
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, sunrise is at 7:29 am and sunset at 4:54 pm EST.

Sunshine

In Union Bridge, the average sunshine in December is 5h.

UV index

The months with the lowest UV index 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 exposure to the Sun's UV rays for the average person.
Note: The average daily UV index of 2 in December transforms into the following instructions:
While most can endure approximately an hour in the sun without burning, children always require protection from sunlight. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Enhance your sun protection with tightly woven, yet airy clothing. Bear in mind! The Sun's UV radiation can nearly double in intensity due to the reflective quality of snow.

Frequently asked questions

How cold does it get in December?

In December, the average high-temperature and low-temperature are 42.6°F (5.9°C) and 30.4°F (-0.9°C) respectively. The average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which combines air temperature and relative humidity, in August is calculated to be 87.8°F (31°C).

What is the average humidity in December?

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

How many days does it rain in December?

In December, the rain falls for 9.8 days. Throughout December, 1.77" (45mm) of precipitation is accumulated.

How much does it snow in December?

In December, it is snowing for 3.9 days. Throughout December, 1.57" (40mm) of snow is accumulated.

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

The month with the shortest days is December, with an average of 9h and 24min of daylight.

What is the average length of the day in December?

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

When is the sunrise / sunset in December?

On the first day of December, 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.

What is the month with the lowest UV index?

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

How high is the UV index in December in Union Bridge?

In Union Bridge, the average daily maximum UV index in December is 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability 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
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).

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).

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).

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%).

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").

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).

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").

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).

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).

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).

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).

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).

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).

Union Bridge, Maryland, USA

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