In July, Boise typically sees daytime highs of 31.0°C and overnight lows around 12.1°C. Compared to the annual average high of 15.8°C, July runs +15.2°C.
July in Boise averages a daytime high of 31.0°C and an overnight low of 12.1°C.
July runs +15.2°C compared to Boise's annual average high of 15.8°C, ranking #1 of 12 months by warmth.
Plan for daytime highs near 31.0°C and cooler evenings around 12.1°C.