In September, Thousand Oaks typically sees daytime highs of 25.0°C and overnight lows around 15.3°C. Compared to the annual average high of 20.7°C, September runs +4.4°C.
September in Thousand Oaks averages a daytime high of 25.0°C and an overnight low of 15.3°C.
September runs +4.4°C compared to Thousand Oaks's annual average high of 20.7°C, ranking #2 of 12 months by warmth.
Plan for daytime highs near 25.0°C and cooler evenings around 15.3°C.