The highest day temperature in May 2026 was 100°F. The lowest night temperature was 63°F. The average values for day and night temperatures during May were 92.4°F и 77.8°F respectivly.

Most of the days in May are cloudy but you can also expect sunny or gloomy days.

Precipitation total in May for Matamoros is 1.0 in. It makes may one of the most rainy months of the year.

The average wind speed in May is 13.3 mph. It makes May one of the most windy months of the year for Matamoros.

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 Matamoros in May is 7.4 hours.