See exactly when rain will start and stop with a minute-by-minute precipitation nowcast for the next hour.
34°
Clear
Feels Like: 27°
Min: 16°
Max: 34°
The next few hours will be clear, with today reaching 34°C and dropping to 23°C. The coming days will be drizzle
Compare today's weather with yesterday's data and track temperature trends over time.
Hourly Forecast
Daylight Hours
07:31
Sunrise
19:46
Sunset
Moon
Waxing Crescent
12:19
Moonrise
21:22
Moonset
Daily Forecast
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Weather in Indianapolis today, September 15, 2026
Expect a mostly clear day in Indianapolis on September 15, 2026, with sunshine dominating from morning through evening. Cloud should stay limited, so the overall feel remains bright and settled.
Temperatures climb from an overnight low near 16°C toward a daytime high of about 34°C. The air stays humid, with relative humidity between 46% and 81% and the peak around 23:00. A lighter breeze peaks around 17:00 near 4.2 km/h.
Through the afternoon skies look more workable, with cloud near 0% around 16:00. Later outdoor plans have a clearer window than the morning may have suggested. Horizontal visibility holds close to 16.1 km. The sun rises at 07:31 and sets at 19:46, for a total of 12 hours 14 minutes of sunlight today.
Overall, Indianapolis on September 15, 2026 favours outdoor plans under mostly open skies, with a comfortable high near 34°C.
Frequently asked questions about weather in Indianapolis
How warm does it get in Indianapolis?
The warmest month in Indianapolis is July, with average high temperatures of 30°C. The average temperature during this period is around 25°C.
How cold does it get in Indianapolis?
The coldest month in Indianapolis is January, with average low temperatures of -4°C. The average temperature during this period is around -1°C.
What is the wettest time of year in Indianapolis?
The wettest month in Indianapolis is March, with an average of 126mm of precipitation.
What is the driest time of year in Indianapolis?
The driest month in Indianapolis is September, with an average of 73mm of precipitation.
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