In December, Santa Clarita typically sees daytime highs of 17.0°C and overnight lows around 4.5°C. Compared to the annual average high of 23.1°C, December runs -6.1°C.
December in Santa Clarita averages a daytime high of 17.0°C and an overnight low of 4.5°C.
December runs -6.1°C compared to Santa Clarita's annual average high of 23.1°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 17.0°C and cooler evenings around 4.5°C.