Best time to visit Indianapolis

Indianapolis is a city of two halves. September scores 83 and January scores 21 — a 62-point swing, which is the difference between a holiday and an endurance test. The month you pick matters more here than almost anywhere. The good window runs September to October — 2 months within ten points of the best.

July is the warmest month at 28.4 °C and January the coolest at 1.3 °C — a 27.1 °C spread across the year. At the other end, 120 nights a year fall below freezing: the winter here is a real one.

There is a real wet season here. May to July carry the rain — up to 14 wet days in a month — while January, February, September, October and November drop as low as 8. That 6-day gap is the biggest single difference between a good month and a bad one in Indianapolis, and it moves further than the temperature does.

Daylight runs from 9.4 hours in winter to 15 in summer, enough to notice on a sightseeing itinerary.

The three strongest months are September, October, May. The one to think twice about is January. Each month below has its own page with rainfall reliability, extremes, daylight and crowd levels.

Indianapolis month by month