December weather forecast
Galesville, MD

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Weather in December

The first month of the winter, December, is still a chilly month in Galesville, Maryland, with temperature in the range of an average low of 36.5°F (2.5°C) and an average high of 46.4°F (8°C).

Temperature

December marks a gentle change in average high-temperature, declining from November's fresh 54.5°F (12.5°C) to a frosty 46.4°F (8°C). The average temperature during December nights dips to a cold 36.5°F (2.5°C).

Humidity

In December, the average relative humidity is 75%.

Rainfall

In December, the rain falls for 7.5 days. Throughout December, 0.67" (17mm) of precipitation is accumulated. Throughout the year, there are 127.2 rainfall days, and 11.85" (301mm) of precipitation is accumulated.

Snowfall

January through March, November and December are months with snowfall. In Galesville, in December, snow falls for 1.4 days, with typically accumulated 0.16" (4mm) of snow. In Galesville, during the entire year, snow falls for 8 days and aggregates up to 1.22" (31mm) of snow.

Daylight

The month with the shortest days is December, with an average of 9h and 30min of daylight.
On the first day of the month, sunrise is at 7:06 am and sunset at 4:44 pm. On the last day of December, sunrise is at 7:24 am and sunset at 4:54 pm EST.

Sunshine

The months with the least sunshine are February and December, with an average of 5.2h of sunshine.

UV index

January, February and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low threat to health from exposure to the Sun's UV rays for the ordinary person.
Note: A typical high UV index of 2 in December suggests the following recommendations:
Children, infants, and individuals with sensitive skin should be constantly protected from extended sun exposure. Minimize direct exposure to the Sun during midday when its radiation is at its peak. For minimizing sun-related eye damage, always choose sunglasses with UVA and UVB coverage. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.

Frequently asked questions

What is the usual temperature for Galesville in December?

Galesville in December has an average high-temperature of 46.4°F (8°C) and an average low-temperature of 36.5°F (2.5°C). The average heat index (a.k.a. 'feels like', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, in August is appraised at 89.6°F (32°C).

What is the average humidity in December?

In Galesville, the average relative humidity in December is 75%.

How much does it rain in December?

In Galesville, during December, the rain falls for 7.5 days and regularly aggregates up to 0.67" (17mm) of precipitation.

How much does it snow in December?

In Galesville, in December, during 1.4 snowfall days, 0.16" (4mm) of snow is typically accumulated.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 30min of daylight.

What is the average length of the day in December?

The average day length in December is 9h and 30min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 7:06 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:24 am and sunset at 4:54 pm EST.

What are the months with the least sunshine?

The months with the least sunshine are February and December, with an average of 5.2h of sunshine.

How long on average sun shines in December?

In December, the average sunshine duration is 5.2h.

When is 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?

The average daily maximum UV index in December is 2. A UV Index reading of 2, and below, represents 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
Galesville, MD

Average temperature in December - Galesville, MD
  • Average high temperature in December: 46.4°F

The warmest month (with the highest average high temperature) is July (84.7°F).
The month with the lowest average high temperature is January (40.5°F).

  • Average low temperature in December: 36.5°F

The month with the highest average low temperature is July (71.2°F).
The coldest month (with the lowest average low temperature) is January (30°F).

Average pressure in December
Galesville, MD

Average pressure in December - Galesville, MD
  • Average pressure in December: 30.11"Hg

The month with the highest atmospheric pressure is November (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

Average wind speed in December
Galesville, MD

Average wind speed in December - Galesville, MD
  • Average wind speed in December: 8.9mph

The windiest month (with the highest average wind speed) is March (9.8mph).
The calmest month (with the lowest average wind speed) is July (6.4mph).

Average humidity in December
Galesville, MD

Average humidity in December - Galesville, MD
  • Average humidity in December: 75%

The month with the highest relative humidity is May (78%).
The months with the lowest relative humidity are January and November (72%).

Average rainfall in December
Galesville, MD

Average rainfall in December - Galesville, MD
  • Average rainfall in December: 0.67"

The wettest month (with the highest rainfall) is August (1.93").
The driest month (with the least rainfall) is January (0.51").

Average rainfall days in December
Galesville, MD

Average rainfall days in December - Galesville, MD
  • Average rainfall days in December: 7.5 days

The month with the highest number of rainy days is August (15.6 days).
The month with the least rainy days is November (5.9 days).

Average snowfall in December
Galesville, MD

Average snowfall in December - Galesville, MD
  • Average snowfall in December: 0.16"

The month with the highest snowfall is January (0.55").
The months with the least snowfall are April, May, June, July, August, September and October (0").

Average snowfall days in December
Galesville, MD

Average snowfall days in December - Galesville, MD
  • Average snowfall days in December: 1.4 days

The month with the highest number of snowfall days is January (2.6 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
Galesville, MD

Average daylight in December / Average sunshine in December - Galesville, MD
  • 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 54min).
The months with the least sunshine are February and December (Average sunshine: 5h and 12min).

Average sunshine days in December
Galesville, MD

Average sunshine days in December - Galesville, MD
  • Average sunshine days in December: 21 days

The month with the most sunshine days is November (22.6 days).
The month with the least sunshine days is August (12.5 days).

Average UV index in December
Galesville, MD

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

Average cloud cover in December
Galesville, MD

Average cloud cover in December - Galesville, MD
  • Average cloud cover in December: 43

The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 27).

Average visibility in December
Galesville, MD

Average visibility in December - Galesville, MD
  • Average visibility in December: 6mi

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

Galesville, Maryland, USA

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