In April, San Bernardino typically sees daytime highs of 22.2°C and overnight lows around 7.2°C. Compared to the annual average high of 24.7°C, April runs -2.6°C.
April in San Bernardino averages a daytime high of 22.2°C and an overnight low of 7.2°C.
April runs -2.6°C compared to San Bernardino's annual average high of 24.7°C, ranking #7 of 12 months by warmth.
Plan for daytime highs near 22.2°C and cooler evenings around 7.2°C.