December weather forecast
Bootjack, MD

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Weather in December

December, the first month of the winter in Bootjack, is also a frosty month, with an average temperature varying between 43.5°F (6.4°C) and 31.1°F (-0.5°C).

Temperature

December witnesses a gentle descent in average high-temperature, descending from November's fresh 52.3°F (11.3°C) to a frosty 43.5°F (6.4°C). December generally records an average low-temperature of 31.1°F (-0.5°C).

Humidity

The average relative humidity in December is 78%.

Rainfall

In Bootjack, in December, it is raining for 10.4 days, with typically 2.24" (57mm) of accumulated precipitation. Throughout the year, there are 158.7 rainfall days, and 30.91" (785mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January through May, October through December. In Bootjack, in December, during 3.5 snowfall days, 2.01" (51mm) of snow is typically accumulated. Throughout the year, there are 21.3 snowfall days, and 13.31" (338mm) of snow is accumulated.

Daylight

With an average of 9h and 30min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:09 am and sunset at 4:45 pm. On the last day of December, in Bootjack, sunrise is at 7:28 am and sunset at 4:55 pm EST.

Sunshine

In Bootjack, the average sunshine in December is 5.1h.

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 low health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: The daily high UV index of 2 in December translates into this advice:
Extended exposure to the sun should always be avoided by children, infants, and those with sensitive skin. Considering the harmful UV rays from the Sun during midday, it's essential to reduce exposure. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Stay alert! Snow's reflective properties can almost double the UV radiation from the Sun.
Updated: Aug 12, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

How cold does it get in December?

Bootjack in December has an average high-temperature of 43.5°F (6.4°C) and an average low-temperature of 31.1°F (-0.5°C). The average heat index (a.k.a. 'apparent temperature', 'felt air temperature'), which combines air temperature and relative humidity, in August is evaluated at 89.6°F (32°C).

What is the average humidity in December?

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

How many days does it rain in December?

In Bootjack, in December, it is raining for 10.4 days, with typically 2.24" (57mm) of accumulated precipitation.

How many days does it snow in December?

In Bootjack, during December, snow falls for 3.5 days and regularly aggregates up to 2.01" (51mm) of snow.

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 28min.

When is the sunrise / sunset in December?

In December, on the first day of the month, sunrise is at 7:09 am and sunset at 4:45 pm. On the last day of the month, sunrise is at 7:28 am and sunset at 4:55 pm EST.

How many hours of sunshine does Bootjack have in December?

In December, the average sunshine duration is 5.1h.

When is the lowest UV index?

January, February, November 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 Bootjack?

In Bootjack, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from unsafe 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
Bootjack, MD

Average temperature in December - Bootjack, MD
  • Average high temperature in December: 43.5°F

The warmest month (with the highest average high temperature) is July (85.6°F).
The month with the lowest average high temperature is January (37.8°F).

  • Average low temperature in December: 31.1°F

The month with the highest average low temperature is July (66.6°F).
The coldest month (with the lowest average low temperature) is January (24.8°F).

Average pressure in December
Bootjack, MD

Average pressure in December - Bootjack, 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
Bootjack, MD

Average wind speed in December - Bootjack, MD
  • Average wind speed in December: 7.3mph

The windiest month (with the highest average wind speed) is March (8.1mph).
The calmest month (with the lowest average wind speed) is August (4.8mph).

Average humidity in December
Bootjack, MD

Average humidity in December - Bootjack, MD
  • Average humidity in December: 78%

The months with the highest relative humidity are May and October (79%).
The months with the lowest relative humidity are April and July (74%).

Average rainfall in December
Bootjack, MD

Average rainfall in December - Bootjack, MD
  • Average rainfall in December: 2.24"

The wettest month (with the highest rainfall) is August (3.82").
The driest month (with the least rainfall) is January (1.93").

Average rainfall days in December
Bootjack, MD

Average rainfall days in December - Bootjack, MD
  • Average rainfall days in December: 10.4 days

The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is January (8.3 days).

Average snowfall in December
Bootjack, MD

Average snowfall in December - Bootjack, MD
  • Average snowfall in December: 2.01"

The month with the highest snowfall is March (4.09").
The months with the least snowfall are June, July, August and September (0").

Average snowfall days in December
Bootjack, MD

Average snowfall days in December - Bootjack, MD
  • Average snowfall days in December: 3.5 days

The month with the highest number of snowfall days is January (6.3 days).
The months with the least snowfall days are June, July, August and September (0 days).

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

Average daylight in December / Average sunshine in December - Bootjack, MD
  • Average daylight in December: 9h and 3min

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 30min).

  • Average sunshine in December: 5h and 1min

The month with the most sunshine is July (Average sunshine: 10h and 48min).
The month with the least sunshine is February (Average sunshine: 4h and 54min).

Average sunshine days in December
Bootjack, MD

Average sunshine days in December - Bootjack, MD
  • Average sunshine days in December: 17.6 days

The month with the most sunshine days is November (19.3 days).
The month with the least sunshine days is May (10.8 days).

Average UV index in December
Bootjack, MD

Average UV index in December - Bootjack, 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
Bootjack, MD

Average cloud cover in December - Bootjack, MD
  • Average cloud cover in December: 45

The month with the most cloud cover is March (Cloud cover 47).
The month with the least cloud cover is July (Cloud cover 30).

Average visibility in December
Bootjack, MD

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

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

Bootjack, Maryland, USA

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