In August, Slough typically sees daytime highs of 20.4°C and overnight lows around 11.8°C. Compared to the annual average high of 13.2°C, August runs +7.2°C.
August in Slough averages a daytime high of 20.4°C and an overnight low of 11.8°C.
August runs +7.2°C compared to Slough's annual average high of 13.2°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 20.4°C and cooler evenings around 11.8°C.