In December, Waukegan typically sees daytime highs of 1.0°C and overnight lows around -6.5°C. Compared to the annual average high of 13.5°C, December runs -12.4°C.
December in Waukegan averages a daytime high of 1.0°C and an overnight low of -6.5°C.
December runs -12.4°C compared to Waukegan's annual average high of 13.5°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near 1.0°C and cooler evenings around -6.5°C.