In March, Slough typically sees daytime highs of 9.4°C and overnight lows around 2.2°C. Compared to the annual average high of 13.2°C, March runs -3.8°C.
March in Slough averages a daytime high of 9.4°C and an overnight low of 2.2°C.
March runs -3.8°C compared to Slough's annual average high of 13.2°C, ranking #8 of 12 months by warmth.
Plan for daytime highs near 9.4°C and cooler evenings around 2.2°C.