In December, Port Saint Lucie typically sees daytime highs of 23.1°C and overnight lows around 12.4°C. Compared to the annual average high of 27.8°C, December runs -4.6°C.
December in Port Saint Lucie averages a daytime high of 23.1°C and an overnight low of 12.4°C.
December runs -4.6°C compared to Port Saint Lucie's annual average high of 27.8°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 23.1°C and cooler evenings around 12.4°C.