In March, Rancho Cucamonga typically sees daytime highs of 18.1°C and overnight lows around 5.0°C. Compared to the annual average high of 23.1°C, March runs -5.0°C.
March in Rancho Cucamonga averages a daytime high of 18.1°C and an overnight low of 5.0°C.
March runs -5.0°C compared to Rancho Cucamonga's annual average high of 23.1°C, ranking #9 of 12 months by warmth.
Plan for daytime highs near 18.1°C and cooler evenings around 5.0°C.