In September, Amarillo typically sees daytime highs of 28.5°C and overnight lows around 13.2°C. Compared to the annual average high of 21.9°C, September runs +6.5°C.
September in Amarillo averages a daytime high of 28.5°C and an overnight low of 13.2°C.
September runs +6.5°C compared to Amarillo's annual average high of 21.9°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 28.5°C and cooler evenings around 13.2°C.