Houston Weather in December

Houston, Texas basks in balmy weather during December. Despite it being winter, the days are warm and often sunny.

This page gives detailed information on the typical December weather for Houston.

You can jump directly to data and descriptions for:

The numbers here are historical averages based on climate data gathered at the George Bush Intercontinental Airport, located north of downtown Houston.

Temperature Weather iconTemperature

64 °F December average high 18 °C
45 °F December average low 7 °C

In most years, Houston averages a daily maximum temperature for December that's between 61 and 68 degrees Fahrenheit (16 to 20 degrees Celsius). The minimum temperature usually falls between 41 and 49 °F (5 to 9 °C).

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

20 days 60 °F max. or more (16 °C)
12 days 40 °F min. or less (4 °C)

Nearly every December day warms to over 50 °F (10 °C) in Houston. The city averages 11 days this month when the thermometer reaches into the 70s °F (over 21 °C). One or two days in December can even get as warm as 80 °F (27 °C).

The thermometer dips to freezing or below on an average of 3 nights. But only rarely does December get as chilly as 20 °F (-8 °C).

Rainy Weather iconPrecipitation

3.7 in total precipitation 95 mm
10 days of rain

Half the time, Houston receives 2 to 5 inches (53 to 127 mm) of rainfall in December. One in four years has drier weather, while another one in four is wetter. In rare years, some of the precipitation falls as snow.

Sunny Weather iconSun

51 % sunshine
7 days clear skies

The sun's rays reach the ground in Houston during 51 percent of daylight hours on average in December, for a total of 162 hours in the month. Typically on 7 days this month the sky is mainly clear, with at most 30 percent cloud cover.

Sunlight in December at Houston averages 10 hours and 16 minutes a day. The shortest days of the year, from around December 17th to 24th, last 10 hours and 14 minutes from sunrise to sunset.

Humid Weather iconHumidity

76 % December average humidity

The relative humidity in Houston during December usually peaks at 87 percent in the morning then drops to 57 percent by mid afternoon.

Local Time12 am3 am6 am9 am12 pm3 pm6 pm9 pm
Humidity % 84 86 87 80 62 57 71 80

Windy Weather iconWind

7.7 mph December wind speed average 12.4 kph

December is an average month for wind speed at Houston.

Stormy Weather iconStorms

2 days rainfall of 0.5 inches (13 mm) or more
2 days 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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