December weather forecast
Sun Set Knoll, MD

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Weather in December

December, the first month of the winter in Sun Set Knoll, is also a frosty month, with an average temperature ranging between min 34.7°F (1.5°C) and max 45.5°F (7.5°C).

Temperature

The commencement of December indicates a gentle shift in the average high-temperature, receding from November's fresh 53.8°F (12.1°C) to a frosty 45.5°F (7.5°C). During the nights in December, an average low-temperature of 34.7°F (1.5°C) is observed.

Humidity

The average relative humidity in December is 75%.

Rainfall

In Sun Set Knoll, in December, it is raining for 11.4 days, with typically 2.83" (72mm) of accumulated precipitation. Throughout the year, in Sun Set Knoll, there are 155.7 rainfall days, and 31.22" (793mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Sun Set Knoll are January through April, November and December. In Sun Set Knoll, in December, during 2.4 snowfall days, 0.63" (16mm) of snow is typically accumulated. Throughout the year, in Sun Set Knoll, there are 14 snowfall days, and 6.14" (156mm) 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 7:06 am and sunset at 4:43 pm. On the last day of December, sunrise is at 7:25 am and sunset at 4:53 pm EST.

Sunshine

In Sun Set Knoll, the average sunshine in December is 5.2h.

UV index

January, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for average individuals.
Note: An average maximum UV index of 2 in December leads to these recommendations:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. To prevent harmful UV exposure, minimize direct contact with the Sun around midday. A hat with a generous brim can prevent nearly 50% of UV rays from reaching your eyes. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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Frequently asked questions

What are December temperatures in Sun Set Knoll?

In December, in Sun Set Knoll, the average high-temperature is 45.5°F (7.5°C), and the average low-temperature is 34.7°F (1.5°C). In August, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which calculates the temperature value influenced by the moisture in the air, is estimated at 91.4°F (33°C).

What is the average humidity in December in Sun Set Knoll?

In Sun Set Knoll, Maryland, the average relative humidity in December is 75%.

How much does it rain in Sun Set Knoll in December?

In Sun Set Knoll, Maryland, in December, during 11.4 rainfall days, 2.83" (72mm) of precipitation is typically accumulated.

How many days does it snow in December in Sun Set Knoll?

In December, it is snowing for 2.4 days. Throughout December, 0.63" (16mm) of snow is accumulated.

What is the month with the shortest days in Sun Set Knoll?

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

What is the average length of the day in December in Sun Set Knoll?

In Sun Set Knoll, Maryland, the average day length in December is 9h and 29min.

When is the sunrise / sunset in December in Sun Set Knoll?

In December, on the first day of the month, sunrise is at 7:06 am and sunset at 4:43 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 4:53 pm EST.

How many hours of sunshine does Sun Set Knoll have in December?

In Sun Set Knoll, Maryland, the average sunshine duration in December is 5.2h.

What are the months with the lowest UV index in Sun Set Knoll?

January, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Sun Set Knoll, Maryland.

How high is the UV index in December in Sun Set Knoll?

In December, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a low health threat from exposure to Sun's UV rays.
Today
Tomorrow
Long-term
YearJFMAMJJASONDecember
Nov
December
Jan
Average high temperature
53.8°F 12.1°C
45.5°F 7.5°C
39.6°F 4.2°C
Average low temperature
41.4°F 5.2°C
34.7°F 1.5°C
28.4°F -2°C
Average pressure
30.14" 766mmHg
30.11" 765mmHg
30.1" 765mmHg
Average wind speed
8.5mph 13.7km/h
8.6mph 13.8km/h
9.3mph 15km/h
Average max. wind speed
9.2mph 14.8km/h
9.3mph 15km/h
10.1mph 16.3km/h
Average wind speed gusts
13.8mph 22.2km/h
13.9mph 22.4km/h
14.9mph 24km/h
Average humidity
72%
75%
72%
Average rainfall
2.17" 55mm
2.83" 72mm
2.01" 51mm
Average rainfall days
9.4
11.4
9.9
Average snowfall
0.08" 2mm
0.63" 16mm
2.05" 52mm
Average snowfall days
0.5
2.4
4.4
Average daylight
10h 0min
9h 3min
9h 5min
Average sunshine
5h 5min
5h 1min
5h 2min
Average sunshine days
18.7
16.9
17.5
Average UV index
2
2
2
Average cloud cover
36%
44%
43%
Average visibility
6mi 9.7km
6mi 9.7km
6mi 9.7km

Average temperature in December
Sun Set Knoll, MD

Average temperature in December - Sun Set Knoll, 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 (39.6°F).

  • Average low temperature in December: 34.7°F

The month with the highest average low temperature is July (70.7°F).
The coldest month (with the lowest average low temperature) is January (28.4°F).

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Average pressure in December
Sun Set Knoll, MD

Average pressure in December - Sun Set Knoll, 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).

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Average wind speed in December
Sun Set Knoll, MD

Average wind speed in December - Sun Set Knoll, MD
  • Average wind speed in December: 8.6mph

The windiest month (with the highest average wind speed) is March (9.4mph).
The calmest months (with the lowest average wind speed) are July and August (6mph).

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Average humidity in December
Sun Set Knoll, MD

Average humidity in December - Sun Set Knoll, 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, March, April and November (72%).

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Average rainfall in December
Sun Set Knoll, MD

Average rainfall in December - Sun Set Knoll, MD
  • Average rainfall in December: 2.83"

The wettest month (with the highest rainfall) is August (3.54").
The driest month (with the least rainfall) is September (1.89").

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Average rainfall days in December
Sun Set Knoll, MD

Average rainfall days in December - Sun Set Knoll, MD
  • Average rainfall days in December: 11.4 days

The month with the highest number of rainy days is May (17.5 days).
The month with the least rainy days is November (9.4 days).

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Average snowfall in December
Sun Set Knoll, MD

Average snowfall in December - Sun Set Knoll, MD
  • Average snowfall in December: 0.63"

The month with the highest snowfall is January (2.05").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in December
Sun Set Knoll, MD

Average snowfall days in December - Sun Set Knoll, MD
  • Average snowfall days in December: 2.4 days

The month with the highest number of snowfall days is January (4.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in December /
Average sunshine in December
Sun Set Knoll, MD

Average daylight in December / Average sunshine in December - Sun Set Knoll, 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).

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Average sunshine days in December
Sun Set Knoll, MD

Average sunshine days in December - Sun Set Knoll, MD
  • Average sunshine days in December: 16.9 days

The month with the most sunshine days is November (18.7 days).
The month with the least sunshine days is May (10.8 days).

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Average UV index in December
Sun Set Knoll, MD

Average UV index in December - Sun Set Knoll, 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, November and December (UV index 2).

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Average cloud cover in December
Sun Set Knoll, MD

Average cloud cover in December - Sun Set Knoll, MD
  • Average cloud cover in December: 44

The months with the most cloud cover are February and March (Cloud cover 45).
The month with the least cloud cover is July (Cloud cover 28).

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Average visibility in December
Sun Set Knoll, MD

Average visibility in December - Sun Set Knoll, 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).

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Sun Set Knoll, Maryland, USA

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