December weather forecast
Arlington, TX

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Weather in December

December in Arlington signifies winter’s return, marked with cooler temperatures and shorter days. Visitors and residents adapt to a slower pace of life, indulging in indoor hobbies, and preparation for holiday festivities. A low UV index of 3 makes daytime activities particularly enjoyable for winter enthusiasts. This month also brings occasional snowfall around 0.04" (1mm), bringing a festive feel to the holiday season. With pressure at 30.13" (765mm), the air often feels dense, forming an ideal atmosphere for winter festivities.

Temperature

With the commencement of December, Arlington records a moderate temperature decline, with the average high easing from November's enjoyable 64.9°F (18.3°C) to a mild 56.1°F (13.4°C). Throughout December, Arlington witnesses a consistent average low-temperature of 41.5°F (5.3°C).

Humidity

In December, the average relative humidity is 68%.

Rainfall

In Arlington, in December, it is raining for 8.9 days, with typically 1.73" (44mm) of accumulated precipitation. In Arlington, during the entire year, the rain falls for 136.1 days and collects up to 29.72" (755mm) of precipitation.

Snowfall

January, February, November and December are months with snowfall in Arlington. In Arlington, in December, snow falls for 0.4 days, with typically accumulated 0.04" (1mm) of snow. Throughout the year, in Arlington, there are 2.2 snowfall days, and 0.91" (23mm) of snow is accumulated.

Daylight

With an average of 10h and 0min of daylight, December has the shortest days of the year.
On the first day of the month, sunrise is at 7:13 am and sunset at 5:22 pm. On the last day of December, sunrise is at 7:30 am and sunset at 5:32 pm CST.

Sunshine

The month with the least sunshine is December, with an average of 5.6h of sunshine.

UV index

January and December, with an average maximum UV index of 3, are months with the lowest UV index. A UV Index value of 3 to 5 symbolizes a medium vulnerability from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: The UV index of 3 during December translates into the following guidance:
Undertake precautions - Obligation exists to protect against skin and eye damage. Solar radiation peaks around mid-day, so it's wise to limit exposure to the Sun at this time. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears. Guard yourself! Snow reflection can almost double the UV radiation from the Sun.
Updated: Jul 13, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What are December temperatures?

The high-temperature, in December, in Arlington, is 56.1°F (13.4°C), while the low-temperature averages to 41.5°F (5.3°C). The average heat index (a.k.a. 'feels like', 'apparent temperature'), which calculates the temperature value influenced by the moisture in the air, in September is computed to be 96.8°F (36°C).

What is the average humidity in December?

The average relative humidity in December is 68%.

How much does it rain in December?

In Arlington, in December, during 8.9 rainfall days, 1.73" (44mm) of precipitation is typically accumulated.

How many days does it snow in December?

In Arlington, during December, snow falls for 0.4 days and regularly aggregates up to 0.04" (1mm) of snow.

What is the month with the shortest days in Arlington?

The month with the shortest days is December, with an average of 10h and 0min of daylight.

How many hours of daylight does Arlington have in December?

The average day length in December is 10h and 2min.

What time are sunrise and sunset in December?

In December, on the first day of the month, sunrise is at 7:13 am and sunset at 5:22 pm. On the last day of the month, sunrise is at 7:30 am and sunset at 5:32 pm CST.

What is the month with the least sunshine?

The month with the least sunshine is December, with an average of 5.6h of sunshine.

How long on average sun shines in December?

In December, the average sunshine duration is 5.6h.

What are the months with the lowest UV index?

The months with the lowest UV index are January and December, with an average maximum UV index of 3.

What is the UV index reading in December in Arlington?

In Arlington, the average daily maximum UV index in December is 3. A UV Index estimate of 3 to 5 represents a medium health risk from exposure to the Sun's 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
Arlington, TX

Average temperature in December - Arlington, TX
  • Average high temperature in December: 56.1°F

The warmest month (with the highest average high temperature) is August (95.9°F).
The month with the lowest average high temperature is January (55.2°F).

  • Average low temperature in December: 41.5°F

The month with the highest average low temperature is August (76.6°F).
The coldest month (with the lowest average low temperature) is January (39°F).

Average pressure in December
Arlington, TX

Average pressure in December - Arlington, TX
  • Average pressure in December: 30.13"Hg

The month with the highest atmospheric pressure is January (30.16"Hg).
The month with the lowest atmospheric pressure is June (29.91"Hg).

Average wind speed in December
Arlington, TX

Average wind speed in December - Arlington, TX
  • Average wind speed in December: 8.6mph

The windiest month (with the highest average wind speed) is April (10.2mph).
The calmest month (with the lowest average wind speed) is September (6.6mph).

Average humidity in December
Arlington, TX

Average humidity in December - Arlington, TX
  • Average humidity in December: 68%

The month with the highest relative humidity is May (73%).
The month with the lowest relative humidity is August (55%).

Average rainfall in December
Arlington, TX

Average rainfall in December - Arlington, TX
  • Average rainfall in December: 1.73"

The wettest month (with the highest rainfall) is October (3.98").
The driest month (with the least rainfall) is February (1.46").

Average rainfall days in December
Arlington, TX

Average rainfall days in December - Arlington, TX
  • Average rainfall days in December: 8.9 days

The months with the highest number of rainy days are May and September (14.4 days).
The month with the least rainy days is January (6.2 days).

Average snowfall in December
Arlington, TX

Average snowfall in December - Arlington, TX
  • Average snowfall in December: 0.04"

The month with the highest snowfall is February (0.79").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").

Average snowfall days in December
Arlington, TX

Average snowfall days in December - Arlington, TX
  • Average snowfall days in December: 0.4 days

The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).

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

Average daylight in December / Average sunshine in December - Arlington, TX
  • Average daylight in December: 10h and 0min

The month with the longest days is June (Average daylight: 14h and 18min).
The month with the shortest days is December (Average daylight: 10h and 0min).

  • Average sunshine in December: 5h and 4min

The month with the most sunshine is July (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).

Average sunshine days in December
Arlington, TX

Average sunshine days in December - Arlington, TX
  • Average sunshine days in December: 20.6 days

The month with the most sunshine days is January (23.5 days).
The month with the least sunshine days is May (13.7 days).

Average UV index in December
Arlington, TX

Average UV index in December - Arlington, TX
  • Average UV index in December: 3

The months with the highest UV index are May, June, July and August (UV index 7).
The months with the lowest UV index are January and December (UV index 3).

Average cloud cover in December
Arlington, TX

Average cloud cover in December - Arlington, TX
  • Average cloud cover in December: 36

The month with the most cloud cover is March (Cloud cover 40).
The month with the least cloud cover is August (Cloud cover 20).

Average visibility in December
Arlington, TX

Average visibility in December - Arlington, 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).

Arlington, Texas, USA

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