In August, San Rafael typically sees daytime highs of 19.7°C and overnight lows around 11.7°C. Compared to the annual average high of 16.7°C, August runs +3.0°C.
August in San Rafael averages a daytime high of 19.7°C and an overnight low of 11.7°C.
August runs +3.0°C compared to San Rafael's annual average high of 16.7°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 19.7°C and cooler evenings around 11.7°C.