In April, Slough typically sees daytime highs of 12.3°C and overnight lows around 4.0°C. Compared to the annual average high of 13.2°C, April runs -0.9°C.
April in Slough averages a daytime high of 12.3°C and an overnight low of 4.0°C.
April runs -0.9°C compared to Slough's annual average high of 13.2°C, ranking #7 of 12 months by warmth.
Plan for daytime highs near 12.3°C and cooler evenings around 4.0°C.