In September, Rio Bravo typically sees daytime highs of 33.6°C and overnight lows around 21.9°C. Compared to the annual average high of 29.4°C, September runs +4.2°C.
September in Rio Bravo averages a daytime high of 33.6°C and an overnight low of 21.9°C.
September runs +4.2°C compared to Rio Bravo's annual average high of 29.4°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 33.6°C and cooler evenings around 21.9°C.