In September, Hermosillo typically sees daytime highs of 37.1°C and overnight lows around 22.9°C. Compared to the annual average high of 31.6°C, September runs +5.5°C.
September in Hermosillo averages a daytime high of 37.1°C and an overnight low of 22.9°C.
September runs +5.5°C compared to Hermosillo's annual average high of 31.6°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 37.1°C and cooler evenings around 22.9°C.