In August, Stevenage typically sees daytime highs of 20.6°C and overnight lows around 12.2°C. Compared to the annual average high of 13.3°C, August runs +7.3°C.
August in Stevenage averages a daytime high of 20.6°C and an overnight low of 12.2°C.
August runs +7.3°C compared to Stevenage's annual average high of 13.3°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 20.6°C and cooler evenings around 12.2°C.