In March, Decatur typically sees daytime highs of 10.0°C and overnight lows around -1.2°C. Compared to the annual average high of 17.2°C, March runs -7.2°C.
March in Decatur averages a daytime high of 10.0°C and an overnight low of -1.2°C.
March runs -7.2°C compared to Decatur's annual average high of 17.2°C, ranking #9 of 12 months by warmth.
Plan for daytime highs near 10.0°C and cooler evenings around -1.2°C.