December weather forecast
Sweetser Heights, MD

Share

Weather in December

The first month of the winter, December, is still a chilly month in Sweetser Heights, Maryland, with an average temperature varying between 34.2°F (1.2°C) and 45.5°F (7.5°C).

Temperature

Sweetser Heights's progression into December involves a minor drop in the average high-temperature, slightly receding from a fresh 53.4°F (11.9°C) in November to a frosty 45.5°F (7.5°C). During December, an average low-temperature of 34.2°F (1.2°C) is observed.

Humidity

In Sweetser Heights, the average relative humidity in December is 76%.

Rainfall

In December, the rain falls for 10.1 days. Throughout December, 2.28" (58mm) of precipitation is accumulated. In Sweetser Heights, during the entire year, the rain falls for 156.3 days and collects up to 29.61" (752mm) of precipitation.

Snowfall

January through March, November and December are months with snowfall. In Sweetser Heights, during December, snow falls for 2.2 days and regularly aggregates up to 0.79" (20mm) of snow. In Sweetser Heights, during the entire year, snow falls for 12.8 days and aggregates up to 6.77" (172mm) of snow.

Daylight

With an average of 9h and 30min of daylight, December has the shortest days of the year in Sweetser Heights.
On the first day of the month, sunrise is at 7:07 am and sunset at 4:44 pm. On the last day of December, sunrise is at 7:26 am and sunset at 4:53 pm EST.

Sunshine

In December, the average sunshine in Sweetser Heights is 5.2h.

UV index

The months with the lowest UV index in Sweetser Heights are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the average person.
Note: The UV index of 2 in December translates into these instructions:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. The mid-day Sun emits the most powerful UV radiation, so seek shade and minimize exposure. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
[Resources]

Frequently asked questions

What is the usual temperature for Sweetser Heights in December?

During December, Sweetser Heights experiences an average high-temperature of 45.5°F (7.5°C) and a low-temperature of 34.2°F (1.2°C). In August, the average heat index (a.k.a. 'felt air temperature', 'apparent temperature'), which represents the influence of relative humidity on air temperature, is evaluated at 91.4°F (33°C).

What is the average humidity in December in Sweetser Heights?

In December, the average relative humidity in Sweetser Heights is 76%.

How much does it rain in Sweetser Heights in December?

In Sweetser Heights, Maryland, during December, the rain falls for 10.1 days and regularly aggregates up to 2.28" (58mm) of precipitation.

How much does it snow in Sweetser Heights in December?

In Sweetser Heights, in December, during 2.2 snowfall days, 0.79" (20mm) of snow is typically accumulated.

What is the month with the shortest days in Sweetser Heights?

The month with the shortest days in Sweetser Heights, Maryland, is December, with an average of 9h and 30min of daylight.

How many hours of daylight does Sweetser Heights have in December?

In Sweetser Heights, Maryland, the average day length in December is 9h and 28min.

When is the sunrise / sunset in December in Sweetser Heights?

In December, on the first day of the month, sunrise is at 7:07 am and sunset at 4:44 pm. On the last day of the month, in Sweetser Heights, Maryland, sunrise is at 7:26 am and sunset at 4:53 pm EST.

How many hours of sunshine does Sweetser Heights have in December?

In December, the average sunshine duration in Sweetser Heights is 5.2h.

What are the months with the lowest UV index in Sweetser Heights?

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

How high is the UV index in December in Sweetser Heights?

The average daily maximum UV index in December is 2. A UV Index 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
Sweetser Heights, MD

Average temperature in December - Sweetser Heights, MD
  • Average high temperature in December: 45.5°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 (38.8°F).

  • Average low temperature in December: 34.2°F

The month with the highest average low temperature is July (70°F).
The coldest month (with the lowest average low temperature) is January (27.3°F).

[Resources]

Average pressure in December
Sweetser Heights, MD

Average pressure in December - Sweetser Heights, 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 (29.94"Hg).

[Resources]

Average wind speed in December
Sweetser Heights, MD

Average wind speed in December - Sweetser Heights, MD
  • Average wind speed in December: 8.3mph

The windiest months (with the highest average wind speed) are February and March (9mph).
The calmest months (with the lowest average wind speed) are July and August (5.7mph).

[Resources]

Average humidity in December
Sweetser Heights, MD

Average humidity in December - Sweetser Heights, MD
  • Average humidity in December: 76%

The month with the highest relative humidity is May (77%).
The months with the lowest relative humidity are April and July (72%).

[Resources]

Average rainfall in December
Sweetser Heights, MD

Average rainfall in December - Sweetser Heights, MD
  • Average rainfall in December: 2.28"

The wettest month (with the highest rainfall) is August (3.94").
The driest month (with the least rainfall) is January (1.77").

[Resources]

Average rainfall days in December
Sweetser Heights, MD

Average rainfall days in December - Sweetser Heights, MD
  • Average rainfall days in December: 10.1 days

The month with the highest number of rainy days is May (17 days).
The month with the least rainy days is January (8.6 days).

[Resources]

Average snowfall in December
Sweetser Heights, MD

Average snowfall in December - Sweetser Heights, MD
  • Average snowfall in December: 0.79"

The month with the highest snowfall is January (2.24").
The months with the least snowfall are April, May, June, July, August, September and October (0").

[Resources]

Average snowfall days in December
Sweetser Heights, MD

Average snowfall days in December - Sweetser Heights, MD
  • Average snowfall days in December: 2.2 days

The month with the highest number of snowfall days is February (3.9 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

[Resources]

Average daylight in December /
Average sunshine in December
Sweetser Heights, MD

Average daylight in December / Average sunshine in December - Sweetser Heights, 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 54min).
The month with the least sunshine is February (Average sunshine: 5h and 6min).

[Resources]

Average sunshine days in December
Sweetser Heights, MD

Average sunshine days in December - Sweetser Heights, MD
  • Average sunshine days in December: 18.5 days

The month with the most sunshine days is November (19.9 days).
The month with the least sunshine days is July (10.9 days).

[Resources]

Average UV index in December
Sweetser Heights, MD

Average UV index in December - Sweetser Heights, 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).

[Resources]

Average cloud cover in December
Sweetser Heights, MD

Average cloud cover in December - Sweetser Heights, MD
  • Average cloud cover in December: 44

The month with the most cloud cover is March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 29).

[Resources]

Average visibility in December
Sweetser Heights, MD

Average visibility in December - Sweetser Heights, 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).

[Resources]

Sweetser Heights, Maryland, USA

Weather forecast for your location

1. Click Locate me button
2. Allow the app to use your location