In September, Haverhill typically sees daytime highs of 22.4°C and overnight lows around 10.2°C. Compared to the annual average high of 14.4°C, September runs +8.0°C.
September in Haverhill averages a daytime high of 22.4°C and an overnight low of 10.2°C.
September runs +8.0°C compared to Haverhill's annual average high of 14.4°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 22.4°C and cooler evenings around 10.2°C.