In December, San Rafael typically sees daytime highs of 30.5°C and overnight lows around 14.0°C. Compared to the annual average high of 23.7°C, December runs +6.8°C.
December in San Rafael averages a daytime high of 30.5°C and an overnight low of 14.0°C.
December runs +6.8°C compared to San Rafael's annual average high of 23.7°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 30.5°C and cooler evenings around 14.0°C.