In June, Walnut Creek typically sees daytime highs of 24.8°C and overnight lows around 11.3°C. Compared to the annual average high of 20.0°C, June runs +4.8°C.
June in Walnut Creek averages a daytime high of 24.8°C and an overnight low of 11.3°C.
June runs +4.8°C compared to Walnut Creek's annual average high of 20.0°C, ranking #4 of 12 months by warmth.
Plan for daytime highs near 24.8°C and cooler evenings around 11.3°C.