In December, Beaverton typically sees daytime highs of 7.5°C and overnight lows around 1.4°C. Compared to the annual average high of 16.7°C, December runs -9.2°C.
December in Beaverton averages a daytime high of 7.5°C and an overnight low of 1.4°C.
December runs -9.2°C compared to Beaverton's annual average high of 16.7°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 7.5°C and cooler evenings around 1.4°C.