December weather forecast
Addison, TX

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Weather in December

The first month of the winter, December, is still a mild month in Addison, Texas, with an average temperature varying between 55.4°F (13°C) and 41.7°F (5.4°C).

Temperature

Addison in December undergoes a slight reduction in the average high-temperature, shifting from November's enjoyable 64.2°F (17.9°C) to a mild 55.4°F (13°C). Throughout the December nights, Addison encounters a low-temperature of 41.7°F (5.4°C).

Humidity

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

Rainfall

In Addison, Texas, in December, it is raining for 9.4 days, with typically 2.05" (52mm) of accumulated precipitation. In Addison, during the entire year, the rain falls for 142.4 days and collects up to 31.3" (795mm) of precipitation.

Snowfall

January, February, November and December are months with snowfall. In Addison, in December, snow falls for 0.3 days, with typically accumulated 0.12" (3mm) of snow. Throughout the year, there are 2.4 snowfall days, and 0.94" (24mm) of snow is accumulated.

Daylight

December has the shortest days of the year, with an average of 10h and 0min of daylight.
On the first day of the month, sunrise is at 7:12 am and sunset at 5:20 pm. On the last day of December, in Addison, sunrise is at 7:30 am and sunset at 5:31 pm CST.

Sunshine

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

UV index

December is the month with the lowest UV index, with an average maximum UV index of 3. A UV Index reading of 3 to 5 represents a medium health hazard from unprotected exposure to Sun's UV rays for average individuals.
Note: In December, the maximum UV index of 3 translates into these guidelines:
Undertake protective steps - Obligation to safeguard skin and eyes from harm is in place. Around midday, solar radiation is most harmful; hence, exposure should be limited. Boost your sun resistance with garments that are densely woven yet spacious. Be advised! The UV radiation from the Sun can be almost doubled due to the reflective properties of snow.
Updated: Jul 17, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate

Frequently asked questions

What is the average December temperature?

During December, Addison experiences an average high-temperature of 55.4°F (13°C) and a low-temperature of 41.7°F (5.4°C). The average heat index (a.k.a. 'real feel', 'apparent temperature'), which factors the actual air temperature with the relative humidity, in September is evaluated at 96.8°F (36°C).

What is the average humidity in December in Addison?

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

How many days does it rain in December?

In December, the rain falls for 9.4 days. Throughout December, 2.05" (52mm) of precipitation is accumulated.

How much does it snow in December?

In December, it is snowing for 0.3 days. Throughout December, 0.12" (3mm) of snow is accumulated.

What is the month with the shortest days?

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

What is the average length of the day in December?

In December, the average day length is 10h and 1min.

When is the sunrise / sunset in December?

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, sunrise is at 7:30 am and sunset at 5:31 pm CST.

What is the month with the least sunshine?

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

How long on average sun shines in December?

In December, the average sunshine duration is 5.6h.

When is the lowest UV index?

The month with the lowest UV index is December, with an average maximum UV index of 3.

What is the UV index reading in December in Addison?

In December, the average daily maximum UV index is 3. A UV Index reading of 3 to 5 represents a moderate vulnerability 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
Addison, TX

Average temperature in December - Addison, TX
  • Average high temperature in December: 55.4°F

The warmest month (with the highest average high temperature) is August (96.3°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°F).
The coldest month (with the lowest average low temperature) is January (38.8°F).

Average pressure in December
Addison, TX

Average pressure in December - Addison, 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 (29.9"Hg).

Average wind speed in December
Addison, TX

Average wind speed in December - Addison, TX
  • Average wind speed in December: 8.5mph

The windiest month (with the highest average wind speed) is April (10mph).
The calmest month (with the lowest average wind speed) is September (6.7mph).

Average humidity in December
Addison, TX

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

The month with the highest relative humidity is May (71%).
The month with the lowest relative humidity is August (54%).

Average rainfall in December
Addison, TX

Average rainfall in December - Addison, TX
  • Average rainfall in December: 2.05"

The wettest month (with the highest rainfall) is October (4.02").
The driest month (with the least rainfall) is February (1.73").

Average rainfall days in December
Addison, TX

Average rainfall days in December - Addison, TX
  • Average rainfall days in December: 9.4 days

The month with the highest number of rainy days is May (15 days).
The month with the least rainy days is January (6.6 days).

Average snowfall in December
Addison, TX

Average snowfall in December - Addison, TX
  • Average snowfall in December: 0.12"

The month with the highest snowfall is February (0.59").
The months with the least snowfall are March, April, May, June, July, August, September and October (0").

Average snowfall days in December
Addison, TX

Average snowfall days in December - Addison, TX
  • Average snowfall days in December: 0.3 days

The month with the highest number of snowfall days is February (1.1 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).

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

Average daylight in December / Average sunshine in December - Addison, 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 months with the most sunshine are July and August (Average sunshine: 11h and 0min).
The month with the least sunshine is December (Average sunshine: 5h and 36min).

Average sunshine days in December
Addison, TX

Average sunshine days in December - Addison, TX
  • Average sunshine days in December: 20 days

The month with the most sunshine days is January (23 days).
The month with the least sunshine days is September (13.8 days).

Average UV index in December
Addison, TX

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

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 3).

Average cloud cover in December
Addison, TX

Average cloud cover in December - Addison, TX
  • Average cloud cover in December: 37

The month with the most cloud cover is March (Cloud cover 41).
The month with the least cloud cover is August (Cloud cover 20).

Average visibility in December
Addison, TX

Average visibility in December - Addison, 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).

Addison, Texas, USA

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