In August, Spokane Valley typically sees daytime highs of 27.5°C and overnight lows around 10.6°C. Compared to the annual average high of 13.8°C, August runs +13.7°C.
August in Spokane Valley averages a daytime high of 27.5°C and an overnight low of 10.6°C.
August runs +13.7°C compared to Spokane Valley's annual average high of 13.8°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 27.5°C and cooler evenings around 10.6°C.