In December, Saint Joseph typically sees daytime highs of 4.3°C and overnight lows around -6.2°C. Compared to the annual average high of 17.6°C, December runs -13.4°C.
December in Saint Joseph averages a daytime high of 4.3°C and an overnight low of -6.2°C.
December runs -13.4°C compared to Saint Joseph's annual average high of 17.6°C, ranking #11 of 12 months by warmth.
Plan for daytime highs near 4.3°C and cooler evenings around -6.2°C.