December weather forecast
Osborne Heights, MD

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Weather in December

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

Temperature

The arrival of December suggests a slight decrease in the average high-temperature, moving from a fresh 53.4°F (11.9°C) in November to a frosty 45.5°F (7.5°C). December nights are marked by an average low-temperature of 34.2°F (1.2°C).

Humidity

The average relative humidity in December in Osborne Heights is 76%.

Rainfall

In Osborne Heights, in December, it is raining for 10.1 days, with typically 2.28" (58mm) of accumulated precipitation. In Osborne 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 December, it is snowing for 2.2 days. Throughout December, 0.79" (20mm) of snow is accumulated. In Osborne Heights, during the entire year, snow falls for 12.8 days and aggregates up to 6.77" (172mm) 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 December in Osborne Heights, Maryland, sunrise is at 7:07 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:25 am and sunset at 4:53 pm EST.

Sunshine

In December, the average sunshine is 5.2h.

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 of 2, and less, symbolizes a minimal health vulnerability from unsafe exposure to UV radiation for the ordinary person.
Note: In December, the average maximum UV index of 2 translates into the following recommendations:
Those with sensitive skin, infants, and children require constant safeguarding from prolonged sun exposure. During midday, the Sun's radiation is strongest, and it's advisable to reduce direct exposure. Using UVA and UVB-protective sunglasses and sun-protective clothing is effective against UV radiation. Foresee this! The reflection from snow can nearly double the intensity of UV radiation from the Sun.
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Frequently asked questions

What are December temperatures in Osborne Heights?

The average high-temperature and low-temperature during December are 45.5°F (7.5°C) and 34.2°F (1.2°C) respectively. In August, the average heat index (a.k.a. 'feels like', 'real feel'), which takes the relative humidity and factors it into the air temperature reading, is evaluated at 91.4°F (33°C).

What is the average humidity in December in Osborne Heights?

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

How many days does it rain in December in Osborne Heights?

In Osborne Heights, in December, during 10.1 rainfall days, 2.28" (58mm) of precipitation is typically accumulated.

How much does it snow in Osborne Heights in December?

In Osborne Heights, Maryland, in December, snow falls for 2.2 days, with typically accumulated 0.79" (20mm) of snow.

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

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

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

The average day length in December in Osborne Heights is 9h and 28min.

When is the sunrise / sunset in December in Osborne 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, sunrise is at 7:25 am and sunset at 4:53 pm EST.

How long on average sun shines in December in Osborne Heights?

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

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

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 Osborne Heights?

In December, the average daily maximum UV index in Osborne Heights is 2. A UV Index reading of 2, and below, represents a minimal health vulnerability 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
Osborne Heights, MD

Average temperature in December - Osborne 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).

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Average pressure in December
Osborne Heights, MD

Average pressure in December - Osborne 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).

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Average wind speed in December
Osborne Heights, MD

Average wind speed in December - Osborne 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).

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Average humidity in December
Osborne Heights, MD

Average humidity in December - Osborne 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%).

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Average rainfall in December
Osborne Heights, MD

Average rainfall in December - Osborne 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").

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Average rainfall days in December
Osborne Heights, MD

Average rainfall days in December - Osborne 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).

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Average snowfall in December
Osborne Heights, MD

Average snowfall in December - Osborne 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").

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Average snowfall days in December
Osborne Heights, MD

Average snowfall days in December - Osborne 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).

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

Average daylight in December / Average sunshine in December - Osborne 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).

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Average sunshine days in December
Osborne Heights, MD

Average sunshine days in December - Osborne 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).

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Average UV index in December
Osborne Heights, MD

Average UV index in December - Osborne 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).

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Average cloud cover in December
Osborne Heights, MD

Average cloud cover in December - Osborne 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).

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Average visibility in December
Osborne Heights, MD

Average visibility in December - Osborne 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).

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Osborne Heights, Maryland, USA

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