In August, Union typically sees daytime highs of 28.5°C and overnight lows around 16.6°C. Compared to the annual average high of 16.8°C, August runs +11.7°C.
August in Union averages a daytime high of 28.5°C and an overnight low of 16.6°C.
August runs +11.7°C compared to Union's annual average high of 16.8°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 28.5°C and cooler evenings around 16.6°C.