December weather forecast
Altus, OK

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Weather in December

Altus welcomes December with colder temperatures, a high averaging at 51.6°F (10.9°C) and the return of the winter season. December days are short and filled with biting winds that sweep across the town. The festive season can be felt in the air, adding to the charm of the city. The town under goes a magical transformation, exuding warmth and joy despite the dropping temperatures. Cozying up by the fireplace becomes a favorite pastime for many residents during this month.

Temperature

December is the coldest month, exhibiting average temperatures of 51.6°F (10.9°C) at the peak and 34.5°F (1.4°C) at the base.

Humidity

The months with the highest humidity are May and December, with an average relative humidity of 60%.

Rainfall

In December, the rain falls for 4.9 days. Throughout December, 0.94" (24mm) of precipitation is accumulated. In Altus, during the entire year, the rain falls for 104.5 days and collects up to 20.59" (523mm) of precipitation.

Snowfall

Months with snowfall are January through April, November and December. In December, it is snowing for 1.1 days. Throughout December, 0.59" (15mm) of snow is accumulated. In Altus, during the entire year, snow falls for 5.8 days and aggregates up to 2.83" (72mm) of snow.

Daylight

December has the shortest days of the year, with an average of 9h and 54min of daylight.
On the first day of the month, sunrise is at 7:26 am and sunset at 5:26 pm. On the last day of December, sunrise is at 7:44 am and sunset at 5:37 pm CST.

Sunshine

The month with the least sunshine is December, with an average of 6.5h of sunshine.

UV index

December is the month with the lowest UV index, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In December, an average UV index of 2 transforms into the following instructions:
Prolonged exposure to sunlight rarely troubles the majority, but constant protection is vital for babies, children, and fair-skinned people. To guard against the harmful effects of the Sun, minimize exposure during midday. Sun protection is enhanced with clothing that boasts a tight weave yet offers a loose fit. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.

Frequently asked questions

What is the coldest time of year?

December, with its high-temperature average of 51.6°F (10.9°C) and a low-temperature average of 34.5°F (1.4°C), is the coldest month.

What is the usual temperature for Altus in December?

An average high-temperature, in December, in Altus, is 51.6°F (10.9°C) and the average low-temperature is 34.5°F (1.4°C). In September, the average heat index (a.k.a. 'real feel', 'feels like'), which combines relative humidity and air temperature, is calculated to be 91.4°F (33°C).

What are the most humid months?

May and December, with an average relative humidity of 60%, are most humid months.

What is the average humidity in December?

The average relative humidity in December is 60%.

How many days does it rain in December?

In December, the rain falls for 4.9 days. Throughout December, 0.94" (24mm) of precipitation is accumulated.

How much does it snow in December?

In Altus, in December, during 1.1 snowfall days, 0.59" (15mm) of snow is typically accumulated.

What is the month with the shortest days?

December has the shortest days of the year, with an average of 9h and 54min of daylight.

How many hours of daylight does Altus have in December?

In Altus, Oklahoma, the average day length in December is 9h and 53min.

When is the sunrise / sunset in December?

On the first day of December, sunrise is at 7:26 am and sunset at 5:26 pm. On the last day of the month, sunrise is at 7:44 am and sunset at 5:37 pm CST.

What is the month with the least sunshine?

With an average of 6.5h of sunshine, December has the least sunshine of the year.

How many hours of sunshine does Altus have in December?

In December, the average sunshine duration is 6.5h.

What is the month with the lowest UV index?

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

What is the UV index reading in December?

In December, the average daily maximum UV index is 2. A UV Index reading of 2, and below, represents a low health risk from unprotected exposure to 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
Altus, OK

Average temperature in December - Altus, OK
  • Average high temperature in December: 51.6°F

The warmest month (with the highest average high temperature) is July (96.4°F).
The month with the lowest average high temperature is December (51.6°F).

  • Average low temperature in December: 34.5°F

The month with the highest average low temperature is July (76.3°F).
The coldest month (with the lowest average low temperature) is January (33.4°F).

Average pressure in December
Altus, OK

Average pressure in December - Altus, OK
  • Average pressure in December: 30.12"Hg

The month with the highest atmospheric pressure is January (30.15"Hg).
The month with the lowest atmospheric pressure is June (29.86"Hg).

Average wind speed in December
Altus, OK

Average wind speed in December - Altus, OK
  • Average wind speed in December: 9.8mph

The windiest month (with the highest average wind speed) is April (12.4mph).
The calmest month (with the lowest average wind speed) is August (8.9mph).

Average humidity in December
Altus, OK

Average humidity in December - Altus, OK
  • Average humidity in December: 60%

The months with the highest relative humidity are May and December (60%).
The month with the lowest relative humidity is August (49%).

Average rainfall in December
Altus, OK

Average rainfall in December - Altus, OK
  • Average rainfall in December: 0.94"

The wettest month (with the highest rainfall) is May (3.35").
The driest months (with the least rainfall) are February and November (0.75").

Average rainfall days in December
Altus, OK

Average rainfall days in December - Altus, OK
  • Average rainfall days in December: 4.9 days

The month with the highest number of rainy days is May (13.2 days).
The month with the least rainy days is January (3.8 days).

Average snowfall in December
Altus, OK

Average snowfall in December - Altus, OK
  • Average snowfall in December: 0.59"

The month with the highest snowfall is February (0.98").
The months with the least snowfall are May, June, July, August, September and October (0").

Average snowfall days in December
Altus, OK

Average snowfall days in December - Altus, OK
  • Average snowfall days in December: 1.1 days

The month with the highest number of snowfall days is February (2.4 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

Average daylight in December /
Average sunshine in December
Altus, OK

Average daylight in December / Average sunshine in December - Altus, OK
  • Average daylight in December: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 24min).
The month with the shortest days is December (Average daylight: 9h and 54min).

  • Average sunshine in December: 6h and 3min

The month with the most sunshine is June (Average sunshine: 11h and 30min).
The month with the least sunshine is December (Average sunshine: 6h and 30min).

Average sunshine days in December
Altus, OK

Average sunshine days in December - Altus, OK
  • Average sunshine days in December: 24.7 days

The month with the most sunshine days is January (25.9 days).
The month with the least sunshine days is August (15.1 days).

Average UV index in December
Altus, OK

Average UV index in December - Altus, OK
  • Average UV index in December: 2

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

Average cloud cover in December
Altus, OK

Average cloud cover in December - Altus, OK
  • Average cloud cover in December: 25

The month with the most cloud cover is March (Cloud cover 29).
The months with the least cloud cover are June and August (Cloud cover 17).

Average visibility in December
Altus, OK

Average visibility in December - Altus, OK
  • 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).

Altus, Oklahoma, USA

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