In December, Piedras Negras typically sees daytime highs of 19.3°C and overnight lows around 5.1°C. Compared to the annual average high of 28.6°C, December runs -9.3°C.
December in Piedras Negras averages a daytime high of 19.3°C and an overnight low of 5.1°C.
December runs -9.3°C compared to Piedras Negras's annual average high of 28.6°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 19.3°C and cooler evenings around 5.1°C.