In September, Rancagua typically sees daytime highs of 16.0°C and overnight lows around 3.8°C. Compared to the annual average high of 19.1°C, September runs -3.1°C.
September in Rancagua averages a daytime high of 16.0°C and an overnight low of 3.8°C.
September runs -3.1°C compared to Rancagua's annual average high of 19.1°C, ranking #8 of 12 months by warmth.
Plan for daytime highs near 16.0°C and cooler evenings around 3.8°C.