Dallas Weather in December

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Winter weather is usually mild at Dallas, Texas. The nights can get crisp during December yet snow is unusual. The days are mainly balmy and sunny.

This page gives detailed information on the typical December weather for Dallas. You can jump directly to data and descriptions for:

The temperature, precipitation and wind speed numbers here are historical averages based on climate data gathered at the Dallas Love Field Airport, located a few miles from downtown Dallas. The rest of the measurements are averages from the nearby Dallas - Fort Worth International Airport.

temperature iconTemperature

58 °F December average high 14 °C
39 °F December average low 4 °C

In most years, Dallas averages a daily maximum temperature for December that's between 54 and 62 degrees Fahrenheit (12 to 16 degrees Celsius). The minimum temperature usually falls between 35 and 43 °F (1 to 6 °C).

The days at Dallas continue to cool down during December. By the end of the month, the temperature has dropped around 5 °F (3 °C) below what it was at the start.

14 days 60 °F maximum or above (16 °C)
18 days 40 °F minimum or below (4 °C)

Nearly every December day warms to over 40 °F (4 °C) in Dallas. The city averages 4 days this month when the thermometer reaches into the 70s °F (over 21 °C). Most Decembers, the temperature does not get above 80 °F (27 °C).

The thermometer dips to freezing on an average of 7 nights. December typically has one night when the temperature drops to 20 °F (-8 °C).

precipitation iconPrecipitation

2.7 inches total December precipitation 70 millimetres
7 days of rain

Half the time, Dallas receives 1 to 4 inches (25 to 105 mm) of rainfall in December. One in four years has drier weather, while another one in four is wetter. Although snow is possible now, in most years December is free of snow.

sunshine iconSun

52 % sunshine in December
11 days with clear skies

December is one of the cloudiest months for Dallas. The sun's rays reach the ground during 52 percent of daylight hours on average, for a total of 162 hours in the month. Typically on 11 days this month the sky is mainly clear, with at most 30 percent cloud cover.

Sunlight in December at Dallas averages 10 hours and 1 minutes a day. The shortest days of the year, December 21st and 22nd, last 9 hours and 59 minutes from sunrise to sunset.

humidity iconHumidity

68 % December average humidity

The relative humidity in Dallas during December usually peaks at 79 percent in the morning then drops to 51 percent by mid afternoon.

Local Time12 am3 am6 am9 am12 pm3 pm6 pm9 pm
Humidity % 73 77 79 76 59 51 59 68

wind iconWind

9.2 mph December wind speed average 14.8 kph

December is an average month for wind at Dallas.

lightning cloud iconStorms

2 days rainfall of 0.5 inches (13 mm) or more
1 day with thunderstorms in December
Reference

These weather data are long-term historical averages provided by the National Climatic Data Center of the United States. The temperature and precipitation numbers are 1981-2010 normals while the humidity and thunderstorm statistics are 1961-1990 normals.

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