In September, Mexicali typically sees daytime highs of 38.7°C and overnight lows around 21.2°C. Compared to the annual average high of 31.1°C, September runs +7.6°C.
September in Mexicali averages a daytime high of 38.7°C and an overnight low of 21.2°C.
September runs +7.6°C compared to Mexicali's annual average high of 31.1°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 38.7°C and cooler evenings around 21.2°C.