In December, Norwalk typically sees daytime highs of 19.2°C and overnight lows around 7.6°C. Compared to the annual average high of 23.4°C, December runs -4.2°C.
December in Norwalk averages a daytime high of 19.2°C and an overnight low of 7.6°C.
December runs -4.2°C compared to Norwalk's annual average high of 23.4°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 19.2°C and cooler evenings around 7.6°C.