In August, Saint-Hyacinthe typically sees daytime highs of 24.5°C and overnight lows around 13.3°C. Compared to the annual average high of 10.8°C, August runs +13.6°C.
August in Saint-Hyacinthe averages a daytime high of 24.5°C and an overnight low of 13.3°C.
August runs +13.6°C compared to Saint-Hyacinthe's annual average high of 10.8°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 24.5°C and cooler evenings around 13.3°C.