In August, Grand Island typically sees daytime highs of 30.7°C and overnight lows around 16.9°C. Compared to the annual average high of 17.2°C, August runs +13.5°C.
August in Grand Island averages a daytime high of 30.7°C and an overnight low of 16.9°C.
August runs +13.5°C compared to Grand Island's annual average high of 17.2°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 30.7°C and cooler evenings around 16.9°C.