In August, Thornton typically sees daytime highs of 30.5°C and overnight lows around 13.3°C. Compared to the annual average high of 18.6°C, August runs +11.9°C.
August in Thornton averages a daytime high of 30.5°C and an overnight low of 13.3°C.
August runs +11.9°C compared to Thornton's annual average high of 18.6°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 30.5°C and cooler evenings around 13.3°C.