In August, Cupertino typically sees daytime highs of 24.5°C and overnight lows around 12.3°C. Compared to the annual average high of 19.2°C, August runs +5.3°C.
August in Cupertino averages a daytime high of 24.5°C and an overnight low of 12.3°C.
August runs +5.3°C compared to Cupertino's annual average high of 19.2°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 24.5°C and cooler evenings around 12.3°C.