In August, Santa Rosa typically sees daytime highs of 21.8°C and overnight lows around 11.2°C. Compared to the annual average high of 25.7°C, August runs -3.9°C.
August in Santa Rosa averages a daytime high of 21.8°C and an overnight low of 11.2°C.
August runs -3.9°C compared to Santa Rosa's annual average high of 25.7°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near 21.8°C and cooler evenings around 11.2°C.