In December, Idah typically sees daytime highs of 33.2°C and overnight lows around 20.6°C. Compared to the annual average high of 31.9°C, December runs +1.3°C.
December in Idah averages a daytime high of 33.2°C and an overnight low of 20.6°C.
December runs +1.3°C compared to Idah's annual average high of 31.9°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 33.2°C and cooler evenings around 20.6°C.