In December, Ishim typically sees daytime highs of -10.6°C and overnight lows around -19.4°C. Compared to the annual average high of 5.7°C, December runs -16.3°C.
December in Ishim averages a daytime high of -10.6°C and an overnight low of -19.4°C.
December runs -16.3°C compared to Ishim's annual average high of 5.7°C, ranking #10 of 12 months by warmth.
Plan for daytime highs near -10.6°C and cooler evenings around -19.4°C.