In September, Germantown typically sees daytime highs of 26.4°C and overnight lows around 13.5°C. Compared to the annual average high of 18.6°C, September runs +7.8°C.
September in Germantown averages a daytime high of 26.4°C and an overnight low of 13.5°C.
September runs +7.8°C compared to Germantown's annual average high of 18.6°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 26.4°C and cooler evenings around 13.5°C.