In September, Merced typically sees daytime highs of 32.1°C and overnight lows around 13.9°C. Compared to the annual average high of 24.3°C, September runs +7.9°C.
September in Merced averages a daytime high of 32.1°C and an overnight low of 13.9°C.
September runs +7.9°C compared to Merced's annual average high of 24.3°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 32.1°C and cooler evenings around 13.9°C.