In October, Decatur typically sees daytime highs of 19.6°C and overnight lows around 6.1°C. Compared to the annual average high of 17.2°C, October runs +2.4°C.
October in Decatur averages a daytime high of 19.6°C and an overnight low of 6.1°C.
October runs +2.4°C compared to Decatur's annual average high of 17.2°C, ranking #6 of 12 months by warmth.
Plan for daytime highs near 19.6°C and cooler evenings around 6.1°C.