In October, Rialto typically sees daytime highs of 26.9°C and overnight lows around 10.5°C. Compared to the annual average high of 24.7°C, October runs +2.2°C.
October in Rialto averages a daytime high of 26.9°C and an overnight low of 10.5°C.
October runs +2.2°C compared to Rialto's annual average high of 24.7°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 26.9°C and cooler evenings around 10.5°C.