In December, Rochester typically sees daytime highs of -2.4°C and overnight lows around -11.5°C. Compared to the annual average high of 12.5°C, December runs -14.9°C.
December in Rochester averages a daytime high of -2.4°C and an overnight low of -11.5°C.
December runs -14.9°C compared to Rochester's annual average high of 12.5°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near -2.4°C and cooler evenings around -11.5°C.