South Bend (IN)
September
Weather in South Bend, Indiana for September 2026
Your guide to South Bend weather in September - trends and predictions
So far, September 2026 in South Bend shows a warmer trend than usual by 3.7 °F.
The forecast for the next days in South Bend predicts a temperature of 20.7 °F, which is cooler than the historical average.
In general, the average temperature in South Bend at the beginning of September is 26.1 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 22.4 °F by the end of September.
South Bend experiences moderate rainfall in September, with an average of 9 rainy days and a total precipitation of 83.2 mm.
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Temperatures
Rain 🌧️
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21
Dry days
9
Rainy days
0
Snow days
25°/13°
Temperatures
18 km/h
Avg max wind
68 %
Avg humidity
South Bend Weather September
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Temperatures trend during September in South Bend
See the weather trend as well as the moving average line
September weather in South Bend day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Sunny | 28° /15° | 0.8 mm | 6 | |
| Sept. 2 | Sunny | 28° /14° | 0 mm | 7 | |
| Sept. 3 | Sunny | 29° /15° | 3.2 mm | 7 | |
| Sept. 4 | Sunny | 28° /14° | 8.4 mm | 6 | |
| Sept. 5 |  Partly cloudy | 26° /15° | 0 mm | 6 | |
| Sept. 6 |  Light rain shower | 22° /12° | 1.9 mm | 5 | |
| Sept. 7 | Patchy rain possible | 22° /11° | 0 mm | 5 | |
| Sept. 8 | Sunny | 24° /8° | 0 mm | 4 | |
| Sept. 9 | Sunny | 25° /12° | 12.4 mm | 4 | |
| Sept. 10 |  Overcast | 27° /14° | 0 mm | 5 | |
| Sept. 11 | Partly cloudy | 29° /13° | 0 mm | 7 | |
| Sept. 12 | Sunny | 30° /14° | 0.1 mm | 7 | |
| Sept. 13 | Overcast | 29° /16° | 24.9 mm | 7 | |
| Sept. 14 | Sunny | 22° /12° | 0 mm | 6.2 | |
| Sept. 15 | Light rain shower | 26° /16° | 11.9 mm | 6.2 | |
| Sept. 16 | Patchy rain possible | 24° /16° | 1.5 mm | 2.2 | |
| Sept. 17 | Overcast | 23° /16° | 0 mm | 5 | |
| Sept. 18 | Overcast | 23° /15° | 0 mm | 6 | |
| Sept. 19 | Sunny | 31° /18° | 12 mm | 7 | |
| Sept. 20 | Light rain shower | 19° /15° | 3.1 mm | 4 | |
| Sept. 21 | Light rain shower | 14° /13° | 17.6 mm | 3 | |
| Sept. 22 | Light rain shower | 15° /13° | 6.3 mm | 3 | |
| Sept. 23 | Patchy rain possible | 16° /13° | 0.7 mm | 5 | |
| Sept. 24 | Overcast | 15° /10° | 0 mm | 4 | |
| Sept. 25 | Sunny | 20° /9° | 0 mm | 5 | |
| Sept. 26 | Sunny | 21° /12° | 0 mm | 6 | |
| Sept. 27 | Overcast | 26° /12° | 0 mm | 6 | |
| Sept. 28 | Overcast | 24° /15° | 0 mm | 6 | |
| Sept. 29 | Overcast | 26° /14° | 0 mm | 6 | |
| Sept. 30 | Overcast | 25° /15° | 0 mm | 6 | |
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Important Notice
Our weather forecast for South Bend 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 South Bend forecast closer to your planned date for the most up-to-date weather information.
Change Month
South Bend in September - FAQ
What are the expected maximum and minimum temperatures in South Bend during September?
Enjoy moderate daytime temperatures of up to 25° and cooler nights around 13°. Ideal for a range of outdoor activities, from hiking to city tours.
How much rainfall should be expected in South Bend during September?
Moderate rainfall is anticipated in South Bend during September, with a total of 83.2 mm spread over approximately 9 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in South Bend during September?
The average wind speed in South Bend during September is 18 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in South Bend
Explore the daily rainfall trends and prepare for South Bends September weather 💧
Typically, South Bend has 9 rainy days in September with a total of 83.2 mm of rainfall.
UV exposure in South Bend during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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