In September, Manteca typically sees daytime highs of 31.1°C and overnight lows around 13.3°C. Compared to the annual average high of 23.7°C, September runs +7.4°C.
September in Manteca averages a daytime high of 31.1°C and an overnight low of 13.3°C.
September runs +7.4°C compared to Manteca's annual average high of 23.7°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 31.1°C and cooler evenings around 13.3°C.