In April, Appleton typically sees daytime highs of 12.7°C and overnight lows around 0.9°C. Compared to the annual average high of 12.5°C, April runs +0.2°C.
April in Appleton averages a daytime high of 12.7°C and an overnight low of 0.9°C.
April runs +0.2°C compared to Appleton's annual average high of 12.5°C, ranking #7 of 12 months by warmth.
Plan for daytime highs near 12.7°C and cooler evenings around 0.9°C.