In September, Indio typically sees daytime highs of 38.1°C and overnight lows around 20.0°C. Compared to the annual average high of 30.6°C, September runs +7.5°C.
September in Indio averages a daytime high of 38.1°C and an overnight low of 20.0°C.
September runs +7.5°C compared to Indio's annual average high of 30.6°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 38.1°C and cooler evenings around 20.0°C.