In September, Baton Rouge typically sees daytime highs of 31.4°C and overnight lows around 19.6°C. Compared to the annual average high of 25.9°C, September runs +5.4°C.
September in Baton Rouge averages a daytime high of 31.4°C and an overnight low of 19.6°C.
September runs +5.4°C compared to Baton Rouge's annual average high of 25.9°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 31.4°C and cooler evenings around 19.6°C.