In December, Newmarket typically sees daytime highs of -1.4°C and overnight lows around -9.0°C. Compared to the annual average high of 11.5°C, December runs -12.9°C.
December in Newmarket averages a daytime high of -1.4°C and an overnight low of -9.0°C.
December runs -12.9°C compared to Newmarket's annual average high of 11.5°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near -1.4°C and cooler evenings around -9.0°C.