Typical Weather in Indianapolis, IN in September
77° F Avg High
55° F Avg Low
5 Rainy Days
☀️ Temperature Summary
September is a popular time of year to visit, with an inviting climate characterized by warm temperatures. September is one of the warmer months of the year for Indianapolis, with highs averaging around 77°F. You can expect overnight lows near 55°F most days. Daily high temperatures can range between 81°F and 70°F for the month of September.
September is a great time to visit Indianapolis, with mild temperatures and sunny days being very common.
High Temps Throughout the Year
🎒 What to Pack
Pick up a few of these items to keep your trip fun and comfortable.
☔ Rain Summary
In September you can expect close to a 17% chance of rain for any given day. It rains less than usual in September, with total rainfall for the month typically near 3 inches.
Rainfall Throughout the Year
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