In September, Rio Claro typically sees daytime highs of 27.9°C and overnight lows around 14.7°C. Compared to the annual average high of 27.2°C, September runs +0.6°C.
September in Rio Claro averages a daytime high of 27.9°C and an overnight low of 14.7°C.
September runs +0.6°C compared to Rio Claro's annual average high of 27.2°C, ranking #7 of 12 months by warmth.
Plan for daytime highs near 27.9°C and cooler evenings around 14.7°C.