In September, La Crosse typically sees daytime highs of 22.0°C and overnight lows around 9.5°C. Compared to the annual average high of 12.9°C, September runs +9.1°C.
September in La Crosse averages a daytime high of 22.0°C and an overnight low of 9.5°C.
September runs +9.1°C compared to La Crosse's annual average high of 12.9°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 22.0°C and cooler evenings around 9.5°C.