In April, San Rafael typically sees daytime highs of 15.6°C and overnight lows around 7.8°C. Compared to the annual average high of 16.7°C, April runs -1.0°C.
April in San Rafael averages a daytime high of 15.6°C and an overnight low of 7.8°C.
April runs -1.0°C compared to San Rafael's annual average high of 16.7°C, ranking #8 of 12 months by warmth.
Plan for daytime highs near 15.6°C and cooler evenings around 7.8°C.