December in Reynosa averages a daily high of 23.2°C with nights around 11.7°C. Expect roughly 5.4 wet days totalling 24.8mm. Comfortable conditions for being outdoors all day.
Across the year, the best time to visit Reynosa is November–March.
Based on MCALLEN MILLER INTERNATIONAL AIRPORT, TX US (11.7km), 1995–2024. 30 years of December data.