The highest day temperature in December 2025 was 82°F. The lowest night temperature was 39°F. The average values for day and night temperatures during December were 68.3°F и 51.9°F respectivly.

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

Precipitation total in December for Ciudad Acuna is 0.1 in. It makes december the least rainy month of the year.

The average wind speed in December is 8.8 mph. It makes December the most windless month of the year for Ciudad Acuna.

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 Ciudad Acuna in December is 7.0 hours.