December weather forecast
Amarillo, TX

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Street lights shine bright in the night with a view of the scenic full moon up in Amarillo, Texas
Street lights shine bright in the night with a view of the scenic full moon up in Amarillo, Texas

Weather in December

December concludes the weather cycle in Amarillo, Texas by encapsulating the heart of the winter season. In comparison to the comparatively milder November, December's temperatures descend, ushering in a truly cold period. Snowfall amounts to 0.75" (19mm) making it the city's snowiest month. Moreover, UV index readings are at their lowest for the year, reinforcing the winter character of the month. As such, December fulfils the cycle by bringing Amarillo full circle to its classic winter weather.

Temperature

Temperature records in Amarillo mark December as the coldest month, with highs averaging 49.8°F (9.9°C) and lows at 31.1°F (-0.5°C).

Humidity

The most humid month in Amarillo is December, with an average relative humidity of 54%.

Rainfall

In Amarillo, Texas, during December, the rain falls for 2.8 days and regularly aggregates up to 0.31" (8mm) of precipitation. In Amarillo, during the entire year, the rain falls for 80.4 days and collects up to 9.76" (248mm) of precipitation.

Snowfall

January through April, October through December are months with snowfall. In Amarillo, in December, snow falls for 3.4 days, with typically accumulated 0.75" (19mm) of snow. Throughout the year, in Amarillo, Texas, there are 10.7 snowfall days, and 4.49" (114mm) of snow is accumulated.

Daylight

The month with the shortest days in Amarillo is December, with an average of 9h and 48min of daylight.
On the first day of the month, sunrise is at 7:38 am and sunset at 5:35 pm. On the last day of December, in Amarillo, sunrise is at 7:55 am and sunset at 5:45 pm CST.

Sunshine

December has the least sunshine of the year, with an average of 6.8h of sunshine.

UV index

December is the month with the lowest UV index, with an average maximum UV index of 2. A UV Index estimate of 2, and below, represents a minimal health vulnerability from exposure to the Sun's UV rays for the average person.
Note: In December, a daily maximum UV index of 2 leads to the following instructions:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. The most potent solar radiation is around mid-day, so one should minimize exposure to direct sunlight during this period. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Consider this! The reflection from snow can almost double the intensity of the Sun's UV radiation.
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Frequently asked questions

What are the coldest months in Amarillo?

December, having an average high-temperature of 49.8°F (9.9°C) and an average low-temperature of 31.1°F (-0.5°C), is the coldest month in Amarillo, Texas.

What is the average December temperature in Amarillo?

In Amarillo, in December, the average high-temperature is 49.8°F (9.9°C), and the average low-temperature is 31.1°F (-0.5°C). In September, the average heat index (a.k.a. 'feels like', 'felt air temperature'), which combines relative humidity and air temperature, is calculated to be 84.2°F (29°C).

What is the most humid month in Amarillo?

With an average relative humidity of 54%, December is the most humid month in Amarillo.

What is the average humidity in December in Amarillo?

In Amarillo, Texas, the average relative humidity in December is 54%.

How many days does it rain in December in Amarillo?

In Amarillo, Texas, in December, it is raining for 2.8 days, with typically 0.31" (8mm) of accumulated precipitation.

How many days does it snow in December in Amarillo?

In December, it is snowing for 3.4 days. Throughout December, 0.75" (19mm) of snow is accumulated.

What is the month with the shortest days in Amarillo?

The month with the shortest days is December, with an average of 9h and 48min of daylight.

How many hours of daylight does Amarillo have in December?

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

When are sunrise and sunset in December in Amarillo?

In December, on the first day of the month, sunrise is at 7:38 am and sunset at 5:35 pm. On the last day of the month, in Amarillo, Texas, sunrise is at 7:55 am and sunset at 5:45 pm CST.

What is the month with the least sunshine in Amarillo?

With an average of 6.8h of sunshine, December has the least sunshine of the year in Amarillo, Texas.

How long on average sun shines in December in Amarillo?

In Amarillo, Texas, the average sunshine duration in December is 6.8h.

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

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

What is the UV index intensity in December in Amarillo?

In December, the average daily maximum UV index in Amarillo, Texas, is 2. A UV Index estimate of 2, and below, represents a minimal hazard to health 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
Amarillo, TX

Average temperature in December - Amarillo, TX
  • Average high temperature in December: 49.8°F

The warmest month (with the highest average high temperature) is July (92.8°F).
The month with the lowest average high temperature is December (49.8°F).

  • Average low temperature in December: 31.1°F

The month with the highest average low temperature is July (71.2°F).
The coldest months (with the lowest average low temperature) are January and December (31.1°F).

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Average pressure in December
Amarillo, TX

Average pressure in December - Amarillo, TX
  • Average pressure in December: 30.1"Hg

The month with the highest atmospheric pressure is January (30.12"Hg).
The month with the lowest atmospheric pressure is June (29.83"Hg).

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Average wind speed in December
Amarillo, TX

Average wind speed in December - Amarillo, TX
  • Average wind speed in December: 11.2mph

The windiest month (with the highest average wind speed) is April (14.1mph).
The calmest month (with the lowest average wind speed) is August (10.7mph).

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Average humidity in December
Amarillo, TX

Average humidity in December - Amarillo, TX
  • Average humidity in December: 54%

The month with the highest relative humidity is December (54%).
The month with the lowest relative humidity is April (42%).

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Average rainfall in December
Amarillo, TX

Average rainfall in December - Amarillo, TX
  • Average rainfall in December: 0.31"

The wettest months (with the highest rainfall) are July and October (1.26").
The driest month (with the least rainfall) is February (0.24").

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Average rainfall days in December
Amarillo, TX

Average rainfall days in December - Amarillo, TX
  • Average rainfall days in December: 2.8 days

The month with the highest number of rainy days is July (11.6 days).
The months with the least rainy days are January and February (2.5 days).

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Average snowfall in December
Amarillo, TX

Average snowfall in December - Amarillo, TX
  • Average snowfall in December: 0.75"

The month with the highest snowfall is January (1.18").
The months with the least snowfall are May, June, July, August and September (0").

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Average snowfall days in December
Amarillo, TX

Average snowfall days in December - Amarillo, TX
  • Average snowfall days in December: 3.4 days

The month with the highest number of snowfall days is December (3.4 days).
The months with the least snowfall days are June, July, August and September (0 days).

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Average daylight in December /
Average sunshine in December
Amarillo, TX

Average daylight in December / Average sunshine in December - Amarillo, TX
  • Average daylight in December: 9h and 5min

The month with the longest days is June (Average daylight: 14h and 30min).
The month with the shortest days is December (Average daylight: 9h and 48min).

  • Average sunshine in December: 6h and 5min

The month with the most sunshine is June (Average sunshine: 11h and 48min).
The month with the least sunshine is December (Average sunshine: 6h and 48min).

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Average sunshine days in December
Amarillo, TX

Average sunshine days in December - Amarillo, TX
  • Average sunshine days in December: 25.2 days

The month with the most sunshine days is January (26.3 days).
The month with the least sunshine days is July (15.4 days).

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Average UV index in December
Amarillo, TX

Average UV index in December - Amarillo, TX
  • Average UV index in December: 2

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

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Average cloud cover in December
Amarillo, TX

Average cloud cover in December - Amarillo, TX
  • Average cloud cover in December: 22

The month with the most cloud cover is February (Cloud cover 23).
The month with the least cloud cover is June (Cloud cover 14).

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Average visibility in December
Amarillo, TX

Average visibility in December - Amarillo, TX
  • 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).

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Amarillo, Texas, USA

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