In December, Granby typically sees daytime highs of -2.6°C and overnight lows around -11.8°C. Compared to the annual average high of 10.7°C, December runs -13.3°C.
December in Granby averages a daytime high of -2.6°C and an overnight low of -11.8°C.
December runs -13.3°C compared to Granby's annual average high of 10.7°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near -2.6°C and cooler evenings around -11.8°C.