December weather forecast and climate
Fort Smith, AR

What is the temperature in December in Fort Smith?

In December, in Fort Smith, Arkansas, the average high-temperature is 51.4°F (10.8°C), and the average low-temperature is 31.3°F (-0.4°C).

How much does it rain in Fort Smith in December?

In Fort Smith, in December, it is raining for 7.7 days, with typically 3.3" (83.6mm) of accumulated precipitation.

When does it start to snow in Fort Smith?

December is the first month it typically snows in Fort Smith. Throughout December, in the average 0.7 snowfall days, it receives 0.8" (20.3mm) of snow.
Average temperature in December - Fort Smith, AR
  • Average high temperature in December: 51.5°F

The warmest month (with the highest average high temperature) is August (93.4°F).
The month with the lowest average high temperature is January (49.9°F).

  • Average low temperature in December: 31.2°F

The month with the highest average low temperature is July (71.6°F).
The coldest month (with the lowest average low temperature) is January (29°F).

Average humidity in December - Fort Smith, AR
  • Average humidity in December: 71.2%

The month with the highest relative humidity is September (71.8%).
The month with the lowest relative humidity is April (63.8%).

Average rainfall in December - Fort Smith, AR
  • Average rainfall in December: 3.3"

The wettest month (with the highest rainfall) is May (5.5").
The driest month (with the lowest rainfall) is August (2.6").

Average rainfall days in December - Fort Smith, AR
  • Average rainfall days in December: 7.7 days

The month with the highest number of rainy days is May (10.7 days).
The month with the lowest number of rainy days is August (6.3 days).

Average snowfall in December - Fort Smith, AR
  • Average snowfall in December: 0.8"

The month with the highest snowfall is January (2.4").
Months with the lowest snowfall are April, May, June, July, August, September, October and November (0").

Average snowfall days in December - Fort Smith, AR
  • Average snowfall days in December: 0.7 days

The month with the highest number of snowfall days is January (1.1 days).
Months with the lowest number of snowfall days are April, May, June, July, August, September, October and November (0 days).

Average daylight in December / Average sunshine in December - Fort Smith, AR
  • Average daylight in December: 9.8h

The month with the longest days is June (Average daylight: 14.5h).
The month with shortest days is December (Average daylight: 9.8h).

  • Average sunshine in December: 5h

The month with most sunshine is July (Average sunshine: 10.6h).
The month with least sunshine is December (Average sunshine: 5h).

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

Months with the highest UV index are June and July (UV index 10).
The month with the lowest UV index is December (UV index 2).

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