December weather - Winter 2024

Weather in December
Frequently asked questions
Average temperature in December
Average pressure in December
Average wind speed in December
Average humidity in December
Average rainfall in December
Average rainfall days in December
Average snowfall in December
Average snowfall days in December
Average daylight in December
Average sunshine in December
Average sunshine days in December
Average UV index in December
Average cloud cover in December
Average visibility in December

Dallas, Texas, modern city skyscrapers, just before sunset

Weather in December

December in Dallas hails the arrival of winter, with the coldest temperatures, diminished daylight hours, and minimal rainfall acting as harbingers. December's noticeable weather transition from November shows in decrementing temperatures and increased snowfall. A minute increase in snowfall to 0.08" (2mm) marks the city's final snow layer for the year. With the slow wind speeds and generally stable barometric pressure, a calm ambiance permeates the Dallas air. While the days may be short, the joyous festive season illuminates the city, turning the winter chill into a heartwarming experience.

Temperature

December in Dallas, Texas, brings a decrease in the average high-temperature, shifting from a comfortable 64.6°F (18.1°C) in November to a moderate 55.6°F (13.1°C). An average low-temperature of 41.7°F (5.4°C) is noted during the month of December.

Humidity

In Dallas, the average relative humidity in December is 68%.

Rainfall

In Dallas, during December, the rain falls for 8.8 days and regularly aggregates up to 1.89" (48mm) of precipitation. Throughout the year, in Dallas, there are 141.2 rainfall days, and 30.12" (765mm) of precipitation is accumulated.

Snowfall

Months with snowfall are January, February, November and December. In Dallas, in December, snow falls for 0.4 days, with typically accumulated 0.08" (2mm) of snow. In Dallas, Texas, during the entire year, snow falls for 2.2 days and aggregates up to 0.71" (18mm) of snow.

Daylight

With an average of 10h and 0min of daylight, December has the shortest days of the year in Dallas.
On the first day of December in Dallas, sunrise is at 7:12 am and sunset at 5:20 pm. On the last day of the month, sunrise is at 7:29 am and sunset at 5:31 pm CST.

Sunshine

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

UV index

The months with the lowest UV index in Dallas are January and December, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a medium vulnerability from unprotected exposure to Sun's UV rays for the ordinary person.
Note: In December, the maximum UV index of 3 transforms into these recommendations:
Act with care - Obligation to protect against skin and eye damage is highlighted. Stay safe from the Sun's strongest UV rays by limiting exposure during midday. Sun-related eye harm can be minimized with proper sunglasses offering UVA and UVB coverage. Take warning! The intensity of the Sun's UV radiation can be nearly amplified twice due to snow reflection.

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Frequently asked questions

What are December temperatures in Dallas?

In December, in Dallas, the average high-temperature is 55.6°F (13.1°C), and the average low-temperature is 41.7°F (5.4°C). In September, the average heat index (a.k.a. 'real feel', 'apparent temperature'), which takes the relative humidity and factors it into the air temperature reading, is computed to be 95°F (35°C).

What is the average humidity in December in Dallas?

In Dallas, Texas, the average relative humidity in December is 68%.

How many days does it rain in December in Dallas?

In Dallas, Texas, in December, during 8.8 rainfall days, 1.89" (48mm) of precipitation is typically accumulated.

How much does it snow in Dallas in December?

In Dallas, Texas, during December, snow falls for 0.4 days and regularly aggregates up to 0.08" (2mm) of snow.

What is the month with the shortest days in Dallas?

With an average of 10h and 0min of daylight, December has the shortest days of the year.

How many hours of daylight does Dallas have in December?

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

What time are sunrise and sunset in December in Dallas?

In December, on the first day of the month, sunrise is at 7:12 am and sunset at 5:20 pm. On the last day of the month, in Dallas, Texas, sunrise is at 7:29 am and sunset at 5:31 pm CST.

What is the month with the least sunshine in Dallas?

December has the least sunshine of the year, with an average of 5.6h of sunshine.

How long on average sun shines in December in Dallas?

In December, the average sunshine duration is 5.6h.

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

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

What is the UV index intensity in December in Dallas?

In December, the average daily maximum UV index is 3. A UV Index of 3 to 5 symbolizes a medium hazard to health from unprotected exposure to UV radiation.

Today

Tomorrow

Long-term

Year J F M A M J J A S O N December

Nov

December

Jan

Average high temperature

64.6°F 18.1°C

55.6°F 13.1°C

54.3°F 12.4°C

Average low temperature

Average pressure

Average wind speed

Average max. wind speed

9.3mph 15km/h

9.1mph 14.6km/h

9.7mph 15.6km/h

Average wind speed gusts

Average humidity

Average rainfall

Average rainfall days

Average snowfall

Average snowfall days

Average daylight

Average sunshine

Average sunshine days

19.7

20.4

23.2

Average UV index

Average cloud cover

Average visibility

Average temperature in December
Dallas, TX

Average high temperature in December: 55.6°F

The warmest month (with the highest average high temperature) is August (96.1°F).
The month with the lowest average high temperature is January (54.3°F).

Average low temperature in December: 41.7°F

The month with the highest average low temperature is August (77.2°F).
The coldest month (with the lowest average low temperature) is January (39.2°F).

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Average pressure in December
Dallas, 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).

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Average wind speed in December
Dallas, TX

Average wind speed in December: 8.5mph

The windiest month (with the highest average wind speed) is April (9.9mph).
The calmest month (with the lowest average wind speed) is September (6.6mph).

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Average humidity in December
Dallas, TX

Average humidity in December: 68%

The month with the highest relative humidity is May (72%).
The month with the lowest relative humidity is August (55%).

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Average rainfall in December
Dallas, TX

Average rainfall in December: 1.89"

The wettest month (with the highest rainfall) is May (4.13").
The driest month (with the least rainfall) is February (1.61").

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Average rainfall days in December
Dallas, TX

Average rainfall days in December: 8.8 days

The month with the highest number of rainy days is May (15.8 days).
The month with the least rainy days is January (6.7 days).

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Average snowfall in December
Dallas, TX

Average snowfall in December: 0.08"

The month with the highest snowfall is February (0.43").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").

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Average snowfall days in December
Dallas, TX

Average snowfall days in December: 0.4 days

The month with the highest number of snowfall days is February (1.2 days).
The months with the least snowfall days are March, April, May, June, July, August, September and October (0 days).

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Average daylight in December /
Average sunshine in December
Dallas, 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 August (Average sunshine: 11h and 6min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).

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Average sunshine days in December
Dallas, TX

Average sunshine days in December: 20.4 days

The month with the most sunshine days is January (23.2 days).
The month with the least sunshine days is May (12.2 days).

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Average UV index in December
Dallas, 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).

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Average cloud cover in December
Dallas, TX

Average cloud cover in December: 37

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

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Average visibility in December
Dallas, 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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December weather forecast
Dallas, TX

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