Indianapolis (IN)
September
Weather in Indianapolis, Indiana for September 2027
Your guide to Indianapolis weather in September - trends and predictions
In general, the average temperature in Indianapolis at the beginning of September is 29.5 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 24.5 °C by the end of September.
Indianapolis experiences moderate rainfall in September, with an average of 7 rainy days and a total precipitation of 155.7 mm.
Is September a good time to visit Indianapolis? check out the best time to travel to Indianapolis page.
✨ Is September a good time to visit Indianapolis? – Ask the AI Weatherman
Temperatures
Rain 🌧️
More
23
Dry days
7
Rainy days
0
Snow days
27°/16°
Temperatures
14 km/h
Avg max wind
64 %
Avg humidity
Indianapolis Weather September
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Temperatures trend during September in Indianapolis
See the weather trend as well as the moving average line
September weather in Indianapolis day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Sunny | 31° /16° | 0 mm | 8 | |
| Sept. 2 | Sunny | 31° /17° | 0 mm | 8 | |
| Sept. 3 |  Cloudy | 31° /18° | 0 mm | 7 | |
| Sept. 4 |  Light rain | 31° /18° | 6.1 mm | 7 | |
| Sept. 5 |  Thundery outbreaks possible | 31° /19° | 0.1 mm | 7 | |
| Sept. 6 | Light rain | 27° /17° | 3.4 mm | 7 | |
| Sept. 7 | Sunny | 24° /13° | 0 mm | 6 | |
| Sept. 8 | Sunny | 26° /13° | 0 mm | 6 | |
| Sept. 9 |  Partly cloudy | 28° /15° | 0.5 mm | 7 | |
| Sept. 10 |  Patchy rain possible | 28° /16° | 1.5 mm | 6 | |
| Sept. 11 |  Mist | 30° /16° | 0.3 mm | 6 | |
| Sept. 12 |  Heavy rain | 27° /17° | 42.6 mm | 5 | |
| Sept. 13 | Mist | 26° /16° | 0.2 mm | 6 | |
| Sept. 14 | Light rain | 28° /16° | 3.1 mm | 7 | |
| Sept. 15 | Sunny | 31° /16° | 0.1 mm | 7 | |
| Sept. 16 | Light rain | 30° /18° | 3.9 mm | 6 | |
| Sept. 17 | Light rain | 28° /16° | 2.7 mm | 6 | |
| Sept. 18 | Light rain | 27° /16° | 2.7 mm | 6 | |
| Sept. 19 | Light rain | 28° /16° | 2.9 mm | 6 | |
| Sept. 20 | Patchy rain possible | 29° /17° | 1.4 mm | 5 | |
| Sept. 21 |  Moderate rain | 26° /17° | 24.9 mm | 5 | |
| Sept. 22 | Light rain | 25° /17° | 7.7 mm | 5 | |
| Sept. 23 | Moderate rain | 23° /16° | 18.1 mm | 5 | |
| Sept. 24 | Moderate rain | 22° /15° | 22.6 mm | 4 | |
| Sept. 25 | Patchy rain possible | 24° /16° | 1 mm | 6 | |
| Sept. 26 |  Overcast | 24° /13° | 0.8 mm | 5 | |
| Sept. 27 | Light rain | 25° /15° | 3.4 mm | 5 | |
| Sept. 28 | Light rain | 24° /15° | 2.7 mm | 5.9 | |
| Sept. 29 | Light rain | 26° /16° | 2.9 mm | 5.8 | |
| Sept. 30 | Mist | 27° /16° | 0 mm | 5 | |
| Next | |||||
Important Notice
Our weather forecast for Indianapolis in September is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Indianapolis forecast closer to your planned date for the most up-to-date weather information.
Change Month
Indianapolis in September - FAQ
What are the expected maximum and minimum temperatures in Indianapolis during September?
During September, expect a variety of temperatures with highs around 27° and lows near 16°, suitable for diverse activities and preferences.
How much rainfall should be expected in Indianapolis during September?
Significant rainfall exceeding 155.7 mm is expected in Indianapolis during September, occurring over more than 7 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Indianapolis during September?
The average wind speed in Indianapolis during September is 14 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in Indianapolis
Explore the daily rainfall trends and prepare for Indianapoliss September weather 💧
Typically, Indianapolis has 7 rainy days in September with a total of 155.7 mm of rainfall.
UV exposure in Indianapolis during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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