In April, Sioux Falls typically sees daytime highs of 14.7°C and overnight lows around 1.2°C. Compared to the annual average high of 13.7°C, April runs +1.0°C.
April in Sioux Falls averages a daytime high of 14.7°C and an overnight low of 1.2°C.
April runs +1.0°C compared to Sioux Falls's annual average high of 13.7°C, ranking #7 of 12 months by warmth.
Plan for daytime highs near 14.7°C and cooler evenings around 1.2°C.