In December, Palo Alto typically sees daytime highs of 13.1°C and overnight lows around 4.6°C. Compared to the annual average high of 19.2°C, December runs -6.2°C.
December in Palo Alto averages a daytime high of 13.1°C and an overnight low of 4.6°C.
December runs -6.2°C compared to Palo Alto's annual average high of 19.2°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 13.1°C and cooler evenings around 4.6°C.