In September, Riverview typically sees daytime highs of 31.7°C and overnight lows around 22.3°C. Compared to the annual average high of 27.8°C, September runs +3.9°C.
September in Riverview averages a daytime high of 31.7°C and an overnight low of 22.3°C.
September runs +3.9°C compared to Riverview's annual average high of 27.8°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 31.7°C and cooler evenings around 22.3°C.