In September, Upland typically sees daytime highs of 29.8°C and overnight lows around 13.9°C. Compared to the annual average high of 23.1°C, September runs +6.7°C.
September in Upland averages a daytime high of 29.8°C and an overnight low of 13.9°C.
September runs +6.7°C compared to Upland's annual average high of 23.1°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 29.8°C and cooler evenings around 13.9°C.