In September, Monsanto typically sees daytime highs of 27.6°C and overnight lows around 13.8°C. Compared to the annual average high of 21.2°C, September runs +6.4°C.
September in Monsanto averages a daytime high of 27.6°C and an overnight low of 13.8°C.
September runs +6.4°C compared to Monsanto's annual average high of 21.2°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 27.6°C and cooler evenings around 13.8°C.