In December, Frederick typically sees daytime highs of 6.5°C and overnight lows around -3.2°C. Compared to the annual average high of 18.1°C, December runs -11.6°C.
December in Frederick averages a daytime high of 6.5°C and an overnight low of -3.2°C.
December runs -11.6°C compared to Frederick's annual average high of 18.1°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near 6.5°C and cooler evenings around -3.2°C.