In December, Hamilton typically sees daytime highs of 0.3°C and overnight lows around -7.0°C. Compared to the annual average high of 12.8°C, December runs -12.4°C.
December in Hamilton averages a daytime high of 0.3°C and an overnight low of -7.0°C.
December runs -12.4°C compared to Hamilton's annual average high of 12.8°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near 0.3°C and cooler evenings around -7.0°C.