In December, Parsippany typically sees daytime highs of 4.4°C and overnight lows around -4.9°C. Compared to the annual average high of 16.1°C, December runs -11.7°C.
December in Parsippany averages a daytime high of 4.4°C and an overnight low of -4.9°C.
December runs -11.7°C compared to Parsippany's annual average high of 16.1°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near 4.4°C and cooler evenings around -4.9°C.