In December, Wilmington typically sees daytime highs of 6.5°C and overnight lows around -2.5°C. Compared to the annual average high of 17.8°C, December runs -11.3°C.
December in Wilmington averages a daytime high of 6.5°C and an overnight low of -2.5°C.
December runs -11.3°C compared to Wilmington's annual average high of 17.8°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near 6.5°C and cooler evenings around -2.5°C.