In August, Alpharetta typically sees daytime highs of 30.8°C and overnight lows around 19.0°C. Compared to the annual average high of 21.5°C, August runs +9.3°C.
August in Alpharetta averages a daytime high of 30.8°C and an overnight low of 19.0°C.
August runs +9.3°C compared to Alpharetta's annual average high of 21.5°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 30.8°C and cooler evenings around 19.0°C.