In May, Indianapolis typically sees daytime highs of 22.7°C and overnight lows around 10.2°C. Compared to the annual average high of 16.5°C, May runs +6.2°C.
May in Indianapolis averages a daytime high of 22.7°C and an overnight low of 10.2°C.
May runs +6.2°C compared to Indianapolis's annual average high of 16.5°C, ranking #5 of 12 months by warmth.
Plan for daytime highs near 22.7°C and cooler evenings around 10.2°C.