In December, Porterville typically sees daytime highs of 14.0°C and overnight lows around 2.0°C. Compared to the annual average high of 25.3°C, December runs -11.3°C.
December in Porterville averages a daytime high of 14.0°C and an overnight low of 2.0°C.
December runs -11.3°C compared to Porterville's annual average high of 25.3°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 14.0°C and cooler evenings around 2.0°C.