In December, Gresham typically sees daytime highs of 7.2°C and overnight lows around 1.4°C. Compared to the annual average high of 16.1°C, December runs -8.9°C.
December in Gresham averages a daytime high of 7.2°C and an overnight low of 1.4°C.
December runs -8.9°C compared to Gresham's annual average high of 16.1°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 7.2°C and cooler evenings around 1.4°C.