December weather forecast
Oak Forest, MD

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Weather in December

December, the first month of the winter in Oak Forest, is still a chilly month, with an average temperature fluctuating between 44.1°F (6.7°C) and 32.9°F (0.5°C).

Temperature

The arrival of December corresponds with a light shift in temperature, down from a fresh 53.1°F (11.7°C) in November to a frosty 44.1°F (6.7°C). Oak Forest records an average nighttime low-temperature of 32.9°F (0.5°C) throughout December.

Humidity

The average relative humidity in December is 76%.

Rainfall

In Oak Forest, Maryland, in December, it is raining for 11.8 days, with typically 2.6" (66mm) of accumulated precipitation. In Oak Forest, during the entire year, the rain falls for 165.5 days and collects up to 31.65" (804mm) of precipitation.

Snowfall

Months with snowfall are January through April, November and December. In Oak Forest, during December, snow falls for 2.9 days and regularly aggregates up to 1.22" (31mm) of snow. In Oak Forest, during the entire year, snow falls for 16.6 days and aggregates up to 7.8" (198mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 30min of daylight.
On the first day of the month, sunrise is at 7:08 am and sunset at 4:44 pm. On the last day of December, in Oak Forest, sunrise is at 7:26 am and sunset at 4:54 pm EST.

Sunshine

In December, the average sunshine is 5.2h.

UV index

January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV radiation for ordinary individuals.
Note: The daily high UV index of 2 in December translates into this advice:
In contrast to children, who must always be shielded from the sun, most people can tolerate up to an hour of sun exposure without any burns. It's recommended to limit sun exposure when its radiation is at its peak during midday. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Mind this! Nearly twice the UV radiation from the Sun can be reflected by the snow.
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Frequently asked questions

How cold is December in Oak Forest?

The high-temperature in Oak Forest during December is 44.1°F (6.7°C) and the low-temperature is 32.9°F (0.5°C). In August, the average heat index (a.k.a. 'felt air temperature', 'real feel'), which factors the actual air temperature with the relative humidity, is calculated to be 89.6°F (32°C).

What is the average humidity in December in Oak Forest?

In December, the average relative humidity in Oak Forest is 76%.

How many days does it rain in December in Oak Forest?

In Oak Forest, Maryland, in December, during 11.8 rainfall days, 2.6" (66mm) of precipitation is typically accumulated.

How many days does it snow in December in Oak Forest?

In December, in Oak Forest, it is snowing for 2.9 days. Throughout December, 1.22" (31mm) of snow is accumulated.

What is the month with the shortest days in Oak Forest?

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

How many hours of daylight does Oak Forest have in December?

In Oak Forest, the average day length in December is 9h and 28min.

What time are sunrise and sunset in December in Oak Forest?

On the first day of December in Oak Forest, Maryland, sunrise is at 7:08 am and sunset at 4:44 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 4:54 pm EST.

How long on average sun shines in December in Oak Forest?

The average sunshine duration in December in Oak Forest, Maryland, is 5.2h.

What are the months with the lowest UV index in Oak Forest?

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

How high is the UV index in December in Oak Forest?

The average daily maximum UV index in December in Oak Forest is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health from exposure to the Sun's 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
Oak Forest, MD

Average temperature in December - Oak Forest, MD
  • Average high temperature in December: 44.1°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 (38.1°F).

  • Average low temperature in December: 32.9°F

The month with the highest average low temperature is July (68.7°F).
The coldest month (with the lowest average low temperature) is January (26.2°F).

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Average pressure in December
Oak Forest, MD

Average pressure in December - Oak Forest, 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
Oak Forest, MD

Average wind speed in December - Oak Forest, MD
  • Average wind speed in December: 8mph

The windiest month (with the highest average wind speed) is March (8.8mph).
The calmest month (with the lowest average wind speed) is August (5.4mph).

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Average humidity in December
Oak Forest, MD

Average humidity in December - Oak Forest, MD
  • Average humidity in December: 76%

The months with the highest relative humidity are May and October (77%).
The month with the lowest relative humidity is July (71%).

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Average rainfall in December
Oak Forest, MD

Average rainfall in December - Oak Forest, MD
  • Average rainfall in December: 2.6"

The wettest month (with the highest rainfall) is August (3.74").
The driest month (with the least rainfall) is January (2.05").

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Average rainfall days in December
Oak Forest, MD

Average rainfall days in December - Oak Forest, MD
  • Average rainfall days in December: 11.8 days

The month with the highest number of rainy days is May (18.2 days).
The month with the least rainy days is January (9.7 days).

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Average snowfall in December
Oak Forest, MD

Average snowfall in December - Oak Forest, MD
  • Average snowfall in December: 1.22"

The month with the highest snowfall is January (2.4").
The months with the least snowfall are May, June, July, August, September and October (0").

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Average snowfall days in December
Oak Forest, MD

Average snowfall days in December - Oak Forest, MD
  • Average snowfall days in December: 2.9 days

The month with the highest number of snowfall days is January (4.9 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
Oak Forest, MD

Average daylight in December / Average sunshine in December - Oak Forest, 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: 5h and 0min).

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Average sunshine days in December
Oak Forest, MD

Average sunshine days in December - Oak Forest, MD
  • Average sunshine days in December: 16.2 days

The month with the most sunshine days is November (18.5 days).
The month with the least sunshine days is May (10.4 days).

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Average UV index in December
Oak Forest, MD

Average UV index in December - Oak Forest, 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
Oak Forest, MD

Average cloud cover in December - Oak Forest, MD
  • Average cloud cover in December: 44

The month with the most cloud cover is March (Cloud cover 46).
The month with the least cloud cover is July (Cloud cover 29).

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Average visibility in December
Oak Forest, MD

Average visibility in December - Oak Forest, 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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Oak Forest, Maryland, USA

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