In August, Grand Junction typically sees daytime highs of 32.0°C and overnight lows around 15.4°C. Compared to the annual average high of 18.9°C, August runs +13.1°C.
August in Grand Junction averages a daytime high of 32.0°C and an overnight low of 15.4°C.
August runs +13.1°C compared to Grand Junction's annual average high of 18.9°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 32.0°C and cooler evenings around 15.4°C.