Fort Smith
Arkansas, USA
Long-term weather forecast
Long-term weather forecast

December weather forecast and climate
Fort Smith, AR

December, the first month of the winter, in Fort Smith, is also a fresh month, with average temperature ranging between min 31.3°F (-0.4°C) and max 51.4°F (10.8°C).

Temperature

In December, the average high-temperature drops, from a comfortable 62.8°F (17.1°C) in November, to a cool 51.4°F (10.8°C). The average low-temperature, is 31.3°F (-0.4°C).

Humidity

The average relative humidity in Fort Smith, Arkansas, is 71.2%.

Rainfall

In December, in Fort Smith, the rain falls for 7.7 days. Throughout December, 3.3" (83.6mm) of precipitation is accumulated. In Fort Smith, Arkansas, during the entire year, the rain falls for 98.2 days and collects up to 45.5" (1154.7mm) of precipitation.

Snowfall

January through March and December are months with snowfall in Fort Smith, Arkansas.

Daylight

With an average of 9.8h of daylight, December has the shortest days of the year in Fort Smith.

Sunshine

With an average of 5h of sunshine, December has the least sunshine of the year in Fort Smith, Arkansas.

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 value of 2, and less, symbolizes a minimal health hazard from the exposure to the Sun's UV rays for the ordinary person.
The daily maximum UV index of 2 interpret into the following advice:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. A wide-brim hat offers excellent sun protection for 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.

What is the temperature in December in Fort Smith?

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

What is the average humidity in December in Fort Smith?

In Fort Smith, Arkansas, the average relative humidity in December is 71.2%.

How much does it rain in Fort Smith in December?

In Fort Smith, during December, the rain falls for 7.7 days and regularly aggregates up to 3.3" (83.6mm) 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 0.7 snowfall days, it receives 0.8" (20.3mm) of snow.

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

The month with the shortest days is December, with an average of 9.8h of daylight.

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

The average length of the day in December in Fort Smith, Arkansas, is 9.8h.

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

With an average of 5h of sunshine, December has the least sunshine of the year in Fort Smith, Arkansas.

How long on average sun shines in December in Fort Smith?

In December, the average sunshine in Fort Smith is 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 December, the average daily maximum UV index is 2. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to the UV radiation.
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).