In October, Sammamish typically sees daytime highs of 15.3°C and overnight lows around 7.0°C. Compared to the annual average high of 15.1°C, October runs +0.3°C.
October in Sammamish averages a daytime high of 15.3°C and an overnight low of 7.0°C.
October runs +0.3°C compared to Sammamish's annual average high of 15.1°C, ranking #6 of 12 months by warmth.
Plan for daytime highs near 15.3°C and cooler evenings around 7.0°C.