In September, Temecula typically sees daytime highs of 30.6°C and overnight lows around 14.7°C. Compared to the annual average high of 24.6°C, September runs +6.0°C.
September in Temecula averages a daytime high of 30.6°C and an overnight low of 14.7°C.
September runs +6.0°C compared to Temecula's annual average high of 24.6°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 30.6°C and cooler evenings around 14.7°C.