In April, Decatur typically sees daytime highs of 17.9°C and overnight lows around 5.1°C. Compared to the annual average high of 17.2°C, April runs +0.8°C.
April in Decatur averages a daytime high of 17.9°C and an overnight low of 5.1°C.
April runs +0.8°C compared to Decatur's annual average high of 17.2°C, ranking #7 of 12 months by warmth.
Plan for daytime highs near 17.9°C and cooler evenings around 5.1°C.