In September, Rio Tercero typically sees daytime highs of 22.0°C and overnight lows around 7.0°C. Compared to the annual average high of 23.8°C, September runs -1.8°C.
September in Rio Tercero averages a daytime high of 22.0°C and an overnight low of 7.0°C.
September runs -1.8°C compared to Rio Tercero's annual average high of 23.8°C, ranking #8 of 12 months by warmth.
Plan for daytime highs near 22.0°C and cooler evenings around 7.0°C.