In December, Mount Pleasant typically sees daytime highs of 15.4°C and overnight lows around 4.0°C. Compared to the annual average high of 23.5°C, December runs -8.0°C.
December in Mount Pleasant averages a daytime high of 15.4°C and an overnight low of 4.0°C.
December runs -8.0°C compared to Mount Pleasant's annual average high of 23.5°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 15.4°C and cooler evenings around 4.0°C.