In August, Dubuque typically sees daytime highs of 27.5°C and overnight lows around 15.6°C. Compared to the annual average high of 13.9°C, August runs +13.7°C.
August in Dubuque averages a daytime high of 27.5°C and an overnight low of 15.6°C.
August runs +13.7°C compared to Dubuque's annual average high of 13.9°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 27.5°C and cooler evenings around 15.6°C.