In June, Sioux City typically sees daytime highs of 28.2°C and overnight lows around 14.5°C. Compared to the annual average high of 15.8°C, June runs +12.4°C.
June in Sioux City averages a daytime high of 28.2°C and an overnight low of 14.5°C.
June runs +12.4°C compared to Sioux City's annual average high of 15.8°C, ranking #3 of 12 months by warmth.
Plan for daytime highs near 28.2°C and cooler evenings around 14.5°C.