In December, Louisville typically sees daytime highs of 7.1°C and overnight lows around -2.7°C. Compared to the annual average high of 18.9°C, December runs -11.8°C.
December in Louisville averages a daytime high of 7.1°C and an overnight low of -2.7°C.
December runs -11.8°C compared to Louisville's annual average high of 18.9°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 7.1°C and cooler evenings around -2.7°C.