The highest day temperature in December 2025 was 90°F. The lowest night temperature was 27°F. The average values for day and night temperatures during December were 62.3°F и 47.8°F respectivly.

Most of the days in December are sunny but you can also expect cloudy and gloomy days.

Precipitation total in December for Grand Prairie is 0.5 in. It makes december one of the least rainy months of the year.

The average wind speed in December is 8.8 mph.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Grand Prairie in December is 6.2 hours.