December weather forecast
Greenbrier, AR

Weather in December

December, the first month of the winter in Greenbrier, is also a frosty month, with an average temperature ranging between min 35.8°F (2.1°C) and max 49.6°F (9.8°C).

Temperature

In December, the average high-temperature marginally drops from a mild 58.5°F (14.7°C) in November to a chilly 49.6°F (9.8°C). The average low-temperature, in Greenbrier, is 35.8°F (2.1°C).

Humidity

In December, the average relative humidity is 77%.

Rainfall

In Greenbrier, Arkansas, in December, during 8 rainfall days, 1.06" (27mm) of precipitation is typically accumulated. Throughout the year, in Greenbrier, there are 118.6 rainfall days, and 13.86" (352mm) of precipitation is accumulated.

Snowfall

Months with snowfall in Greenbrier are January through March, November and December. In Greenbrier, Arkansas, during December, snow falls for 0.4 days and regularly aggregates up to 0.08" (2mm) of snow. In Greenbrier, during the entire year, snow falls for 3.9 days and aggregates up to 0.71" (18mm) of snow.

Daylight

With an average of 9h and 50min of daylight, December has the shortest days of the year in Greenbrier.
On the first day of December in Greenbrier, Arkansas, sunrise is at 6:59 am and sunset at 4:57 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 5:07 pm CST.

Sunshine

In Greenbrier, the average sunshine in December is 5.4h.

UV index

January and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health hazard from unsafe exposure to UV radiation for average individuals.
Note: In December, the average maximum UV index of 2 translate into the following recommendations:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
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FAQ

What is the average humidity in December in Greenbrier?

The average relative humidity in December in Greenbrier is 77%.

How much does it rain in Greenbrier in December?

In Greenbrier, during December, the rain falls for 8 days and regularly aggregates up to 1.06" (27mm) of precipitation.

How much does it snow in Greenbrier in December?

In Greenbrier, in December, during 0.4 snowfall days, 0.08" (2mm) of snow is typically accumulated.

What is the month with the shortest days in Greenbrier?

December has the shortest days of the year in Greenbrier, Arkansas, with an average of 9h and 50min of daylight.

How many hours of daylight does Greenbrier have in December?

In December, the average day length is 9h and 50min.

When are sunrise and sunset in December in Greenbrier?

On the first day of December in Greenbrier, Arkansas, sunrise is at 6:59 am and sunset at 4:57 pm. On the last day of the month, sunrise is at 7:17 am and sunset at 5:07 pm CST.

How long on average sun shines in December in Greenbrier?

In Greenbrier, Arkansas, the average sunshine duration in December is 5.4h.

What is the month with the lowest UV index in Greenbrier?

January and December, with an average maximum UV index of 2, are months with the lowest UV index in Greenbrier, Arkansas.

What is the UV index reading in December in Greenbrier?

In Greenbrier, Arkansas, the average daily maximum UV index in December is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health from exposure to Sun's UV rays.
Average humidity
Average rainfall days
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Greenbrier, AR

Average temperature in December - Greenbrier, AR
  • Average high temperature in December: 49.6°F

The warmest month (with the highest average high temperature) is July (91°F).
The month with the lowest average high temperature is January (46.9°F).

  • Average low temperature in December: 35.8°F

The month with the highest average low temperature is July (70.3°F).
The coldest month (with the lowest average low temperature) is January (32.2°F).

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Average pressure in December
Greenbrier, AR

Average pressure in December - Greenbrier, AR
  • Average pressure in December: 30.14"Hg

The month with the highest atmospheric pressure is January (30.17"Hg).
The month with the lowest atmospheric pressure is June (29.94"Hg).

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Average wind speed in December
Greenbrier, AR

Average wind speed in December - Greenbrier, AR
  • Average wind speed in December: 6.7mph

The windiest months (with the highest average wind speed) are March and April (7.6mph).
The calmest months (with the lowest average wind speed) are July and August (4.8mph).

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Average humidity in December
Greenbrier, AR

Average humidity in December - Greenbrier, AR
  • Average humidity in December: 77%

The month with the highest relative humidity is March (79%).
The month with the lowest relative humidity is October (72%).

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Average rainfall in December
Greenbrier, AR

Average rainfall in December - Greenbrier, AR
  • Average rainfall in December: 1.06"

The wettest month (with the highest rainfall) is July (1.61").
The driest month (with the least rainfall) is September (0.94").

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Average rainfall days in December
Greenbrier, AR

Average rainfall days in December - Greenbrier, AR
  • Average rainfall days in December: 8 days

The month with the highest number of rainy days is July (13.3 days).
The month with the least rainy days is October (7.2 days).

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Average snowfall in December
Greenbrier, AR

Average snowfall in December - Greenbrier, AR
  • Average snowfall in December: 0.08"

The month with the highest snowfall is March (0.24").
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
Greenbrier, AR

Average snowfall days in December - Greenbrier, AR
  • Average snowfall days in December: 0.4 days

The month with the highest number of snowfall days is January (1.5 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
Greenbrier, AR

Average daylight in December / Average sunshine in December - Greenbrier, AR
  • Average daylight in December: 9h and 50min

The month with the longest days is June (Average daylight: 14h and 29min).
The month with the shortest days is December (Average daylight: 9h and 50min).

  • Average sunshine in December: 5h and 24min

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 12min).

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Average sunshine days in December
Greenbrier, AR

Average sunshine days in December - Greenbrier, AR
  • Average sunshine days in December: 21.1 days

The month with the most sunshine days is October (21.6 days).
The month with the least sunshine days is July (14 days).

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Average UV index in December
Greenbrier, AR

Average UV index in December - Greenbrier, AR
  • Average UV index in December: 2

The month with the highest UV index is June (UV index 7).
The months with the lowest UV index are January and December (UV index 2).

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Average cloud cover in December
Greenbrier, AR

Average cloud cover in December - Greenbrier, AR
  • Average cloud cover in December: 41

The month with the most cloud cover is February (Cloud cover 45).
The month with the least cloud cover is June (Cloud cover 26).

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Average visibility in December
Greenbrier, AR

Average visibility in December - Greenbrier, AR
  • 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).

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