December weather forecast
Fort Smith, AR

Weather in December

December, the first month of the winter in Fort Smith, is still a cool month, with an average temperature varying between 35.4°F (1.9°C) and 50.4°F (10.2°C).

Temperature

In December, the average high-temperature decreases from a moderate 59.9°F (15.5°C) in November to a cool 50.4°F (10.2°C). The average low-temperature, in Fort Smith, is 35.4°F (1.9°C).

Humidity

In Fort Smith, the average relative humidity in December is 75%.

Rainfall

In December, the rain falls for 7.9 days. Throughout December, 1.77" (45mm) of precipitation is accumulated. In Fort Smith, Arkansas, during the entire year, the rain falls for 131.9 days and collects up to 25.51" (648mm) of precipitation.

Snowfall

Months with snowfall in Fort Smith are January through March and December. December is the first month it typically snows in Fort Smith, Arkansas. Throughout December, in the average 0.4 snowfall days, it receives 0.04" (1mm) of snow. Throughout the year, there are 3.9 snowfall days, and 0.79" (20mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 9h and 49min of daylight.
On the first day of December in Fort Smith, sunrise is at 7:08 am and sunset at 5:05 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 5:14 pm CST.

Sunshine

January and December, with an average of 5.5h of sunshine, are months with the least sunshine in Fort Smith.

UV index

The month with the lowest UV index in Fort Smith is December, with an average maximum UV index of 2. A UV Index reading of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for the average person.
Note: The daily maximum UV index of 2 in December interpret into the following advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the temperature in December in Fort Smith?

In December, in Fort Smith, Arkansas, the average high-temperature is 50.4°F (10.2°C), and the average low-temperature is 35.4°F (1.9°C). in September, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which combines air temperature and relative humidity, is calculated to be 93.2°F (34°C).

What is the average humidity in December in Fort Smith?

In December, the average relative humidity in Fort Smith, Arkansas, is 75%.

How much does it rain in Fort Smith in December?

In Fort Smith, Arkansas, during December, the rain falls for 7.9 days and regularly aggregates up to 1.77" (45mm) of precipitation.

When does it start snowing in Fort Smith?

December is the first month it typically snows in Fort Smith. Throughout December, in the average 0.4 snowfall days, it receives 0.04" (1mm) of snow.

What is the month with the shortest days in Fort Smith?

With an average of 9h and 49min of daylight, December has the shortest days of the year in Fort Smith.

What is the average length of the day in December in Fort Smith?

In Fort Smith, Arkansas, the average day length in December is 9h and 49min.

What time are sunrise and sunset in December in Fort Smith?

On the first day of December, sunrise is at 7:08 am and sunset at 5:05 pm. On the last day of the month, sunrise is at 7:26 am and sunset at 5:14 pm CST.

What is the month with the least sunshine in Fort Smith?

January and December, with an average of 5.5h of sunshine, are months with the least sunshine in Fort Smith, Arkansas.

How many hours of sunshine does Fort Smith have in December?

In December, the average sunshine duration in Fort Smith, Arkansas, is 5.5h.

When is the lowest UV index in Fort Smith?

The month with the lowest UV index is December, with an average maximum UV index of 2.

How high is the UV index in December in Fort Smith?

In Fort Smith, Arkansas, the average daily maximum UV index in December is 2. A UV Index reading 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
Average snowfall days
Average sunshine
Average sunshine days
Average UV index
Average cloud cover
Average visibility

Average temperature in December
Fort Smith, AR

Average temperature in December - Fort Smith, AR
  • Average high temperature in December: 50.4°F

The warmest month (with the highest average high temperature) is July (93.4°F).
The month with the lowest average high temperature is January (48°F).

  • Average low temperature in December: 35.4°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 (31.5°F).

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Average pressure in December
Fort Smith, AR

Average pressure in December - Fort Smith, 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 (29.93"Hg).

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Average wind speed in December
Fort Smith, AR

Average wind speed in December - Fort Smith, AR
  • Average wind speed in December: 6.3mph

The windiest month (with the highest average wind speed) is April (7.6mph).
The calmest months (with the lowest average wind speed) are July and August (4.7mph).

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Average humidity in December
Fort Smith, AR

Average humidity in December - Fort Smith, AR
  • Average humidity in December: 75%

The months with the highest relative humidity are March and May (77%).
The months with the lowest relative humidity are July and August (70%).

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Average rainfall in December
Fort Smith, AR

Average rainfall in December - Fort Smith, AR
  • Average rainfall in December: 1.77"

The wettest month (with the highest rainfall) is May (3.43").
The driest month (with the least rainfall) is February (1.34").

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Average rainfall days in December
Fort Smith, AR

Average rainfall days in December - Fort Smith, AR
  • Average rainfall days in December: 7.9 days

The month with the highest number of rainy days is April (14 days).
The month with the least rainy days is November (7.6 days).

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Average snowfall in December
Fort Smith, AR

Average snowfall in December - Fort Smith, AR
  • Average snowfall in December: 0.04"

The month with the highest snowfall is February (0.31").
The months with the least snowfall are April, May, June, July, August, September, October and November (0").

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Average snowfall days in December
Fort Smith, AR

Average snowfall days in December - Fort Smith, AR
  • Average snowfall days in December: 0.4 days

The month with the highest number of snowfall days is February (1.7 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
Fort Smith, AR

Average daylight in December / Average sunshine in December - Fort Smith, AR
  • Average daylight in December: 9h and 49min

The month with the longest days is June (Average daylight: 14h and 31min).
The month with the shortest days is December (Average daylight: 9h and 49min).

  • Average sunshine in December: 5h and 30min

The month with the most sunshine is July (Average sunshine: 10h and 54min).
The months with the least sunshine are January and December (Average sunshine: 5h and 30min).

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Average sunshine days in December
Fort Smith, AR

Average sunshine days in December - Fort Smith, AR
  • Average sunshine days in December: 21.1 days

The month with the most sunshine days is January (21.4 days).
The month with the least sunshine days is April (14.2 days).

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Average UV index in December
Fort Smith, AR

Average UV index in December - Fort Smith, AR
  • Average UV index in December: 2

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

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Average cloud cover in December
Fort Smith, AR

Average cloud cover in December - Fort Smith, AR
  • Average cloud cover in December: 40

The month with the most cloud cover is February (Cloud cover 44).
The month with the least cloud cover is August (Cloud cover 24).

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Average visibility in December
Fort Smith, AR

Average visibility in December - Fort Smith, 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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