In September, Hawthorne typically sees daytime highs of 26.6°C and overnight lows around 16.3°C. Compared to the annual average high of 22.4°C, September runs +4.2°C.
September in Hawthorne averages a daytime high of 26.6°C and an overnight low of 16.3°C.
September runs +4.2°C compared to Hawthorne's annual average high of 22.4°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 26.6°C and cooler evenings around 16.3°C.