In August, Fort Smith typically sees daytime highs of 33.9°C and overnight lows around 20.4°C. Compared to the annual average high of 22.7°C, August runs +11.2°C.
August in Fort Smith averages a daytime high of 33.9°C and an overnight low of 20.4°C.
August runs +11.2°C compared to Fort Smith's annual average high of 22.7°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 33.9°C and cooler evenings around 20.4°C.