In September, Yerba Buena typically sees daytime highs of 23.6°C and overnight lows around 9.1°C. Compared to the annual average high of 24.3°C, September runs -0.7°C.
September in Yerba Buena averages a daytime high of 23.6°C and an overnight low of 9.1°C.
September runs -0.7°C compared to Yerba Buena's annual average high of 24.3°C, ranking #7 of 12 months by warmth.
Plan for daytime highs near 23.6°C and cooler evenings around 9.1°C.