Dallas is typically mild in December.

Maximum temperatures go down compared to the previous month from +68°F to +59°F. The minimum temperature also goes down from +48°F to +41°F.

Pack a light jacket as it will be warm in the day and cool in the evenings.

December is one of the coolest months in Dallas, here is the comparison with other months:

December typically has worse weather conditions compared to November. It’s getting colder in December. From +68°F in the day, the average maximum temperature lowers to +59°F. As December arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 78 mm to 73 mm. Humidity levels don’t change as the month goes on, averaging around 66%. The average wind speed doesn’t change much during December, staying around 3 m/s. The days becoming less sunny, going from 9 sunny days in November to 8 in December.

But maybe it is worth considering traveling in January as the weather gets better.

December is one of the snowiest months in Dallas.

Here’s how December is compared with other months in the amount of snow, total mm:

The climate in Dallas in December has not changed that much over the last 43 years.

The average temperature was the lowest in 1979 (+73°F) and the highest in 2012 (+81°F). The driest year was 2005 with only 460 mm of rainfall, and the wettest year was 2020 with 1551 mm.

For this page, we’ve looked at the typical weather in Dallas, based on historical hourly weather data from January 1, 1979, to December 31, 2023.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.