In December, Sioux Falls typically sees daytime highs of -1.3°C and overnight lows around -11.9°C. Compared to the annual average high of 13.7°C, December runs -15.1°C.
December in Sioux Falls averages a daytime high of -1.3°C and an overnight low of -11.9°C.
December runs -15.1°C compared to Sioux Falls's annual average high of 13.7°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near -1.3°C and cooler evenings around -11.9°C.