In October, Boise typically sees daytime highs of 17.0°C and overnight lows around 1.9°C. Compared to the annual average high of 15.8°C, October runs +1.1°C.
October in Boise averages a daytime high of 17.0°C and an overnight low of 1.9°C.
October runs +1.1°C compared to Boise's annual average high of 15.8°C, ranking #6 of 12 months by warmth.
Plan for daytime highs near 17.0°C and cooler evenings around 1.9°C.