In April, Sammamish typically sees daytime highs of 14.4°C and overnight lows around 4.9°C. Compared to the annual average high of 15.1°C, April runs -0.6°C.
April in Sammamish averages a daytime high of 14.4°C and an overnight low of 4.9°C.
April runs -0.6°C compared to Sammamish's annual average high of 15.1°C, ranking #7 of 12 months by warmth.
Plan for daytime highs near 14.4°C and cooler evenings around 4.9°C.