In August, Gilroy typically sees daytime highs of 28.1°C and overnight lows around 12.0°C. Compared to the annual average high of 21.3°C, August runs +6.8°C.
August in Gilroy averages a daytime high of 28.1°C and an overnight low of 12.0°C.
August runs +6.8°C compared to Gilroy's annual average high of 21.3°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 28.1°C and cooler evenings around 12.0°C.