In January, Indianapolis typically sees daytime highs of 1.3°C and overnight lows around -8.2°C. Compared to the annual average high of 16.5°C, January runs -15.2°C.
January in Indianapolis averages a daytime high of 1.3°C and an overnight low of -8.2°C.
January runs -15.2°C compared to Indianapolis's annual average high of 16.5°C, ranking #12 of 12 months by warmth.
Plan for daytime highs near 1.3°C and cooler evenings around -8.2°C.