In August, Chilliwack typically sees daytime highs of 22.5°C and overnight lows around 11.1°C. Compared to the annual average high of 12.8°C, August runs +9.7°C.
August in Chilliwack averages a daytime high of 22.5°C and an overnight low of 11.1°C.
August runs +9.7°C compared to Chilliwack's annual average high of 12.8°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 22.5°C and cooler evenings around 11.1°C.