In August, Bismarck typically sees daytime highs of 28.4°C and overnight lows around 12.2°C. Compared to the annual average high of 11.9°C, August runs +16.5°C.
August in Bismarck averages a daytime high of 28.4°C and an overnight low of 12.2°C.
August runs +16.5°C compared to Bismarck's annual average high of 11.9°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 28.4°C and cooler evenings around 12.2°C.