In September, West Valley City typically sees daytime highs of 24.0°C and overnight lows around 8.8°C. Compared to the annual average high of 15.4°C, September runs +8.5°C.
September in West Valley City averages a daytime high of 24.0°C and an overnight low of 8.8°C.
September runs +8.5°C compared to West Valley City's annual average high of 15.4°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 24.0°C and cooler evenings around 8.8°C.