In December, Santa Clara typically sees daytime highs of 26.6°C and overnight lows around 15.9°C. Compared to the annual average high of 29.8°C, December runs -3.2°C.
December in Santa Clara averages a daytime high of 26.6°C and an overnight low of 15.9°C.
December runs -3.2°C compared to Santa Clara's annual average high of 29.8°C, ranking #12 of 12 months by warmth.
Plan for daytime highs near 26.6°C and cooler evenings around 15.9°C.