In December, Trenton typically sees daytime highs of 6.5°C and overnight lows around -3.3°C. Compared to the annual average high of 17.6°C, December runs -11.1°C.
December in Trenton averages a daytime high of 6.5°C and an overnight low of -3.3°C.
December runs -11.1°C compared to Trenton's annual average high of 17.6°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near 6.5°C and cooler evenings around -3.3°C.