In December, Corvallis typically sees daytime highs of 7.7°C and overnight lows around 1.2°C. Compared to the annual average high of 16.5°C, December runs -8.8°C.
December in Corvallis averages a daytime high of 7.7°C and an overnight low of 1.2°C.
December runs -8.8°C compared to Corvallis's annual average high of 16.5°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 7.7°C and cooler evenings around 1.2°C.