The highest day temperature in December 2025 was 93°F. The lowest night temperature was 47°F. The average values for day and night temperatures during December were 76.9°F и 62.5°F respectivly.

You can expect various weather conditions during December. Be ready for sunny, cloudy or even gloomy days.

Precipitation total in December for Reynosa is 0.2 in. It makes december the least rainy month of the year.

The average wind speed in December is 9.8 mph. It makes December one of the most windless months of the year for Reynosa.

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 Reynosa in December is 6.2 hours.