In August, Oshkosh typically sees daytime highs of 26.8°C and overnight lows around 14.5°C. Compared to the annual average high of 12.8°C, August runs +14.0°C.
August in Oshkosh averages a daytime high of 26.8°C and an overnight low of 14.5°C.
August runs +14.0°C compared to Oshkosh's annual average high of 12.8°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 26.8°C and cooler evenings around 14.5°C.