In September, Lafayette typically sees daytime highs of 31.0°C and overnight lows around 20.2°C. Compared to the annual average high of 25.5°C, September runs +5.5°C.
September in Lafayette averages a daytime high of 31.0°C and an overnight low of 20.2°C.
September runs +5.5°C compared to Lafayette's annual average high of 25.5°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 31.0°C and cooler evenings around 20.2°C.