America (IL)
September
Weather in America, Illinois for September 2027
Your guide to America weather in September - trends and predictions
In general, the average temperature in America at the beginning of September is 35 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 26.7 °F by the end of September.
America experiences moderate rainfall in September, with an average of 8 rainy days and a total precipitation of 40.5 mm.
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Temperatures
Rain 🌧️
More
22
Dry days
8
Rainy days
0
Snow days
31°/20°
Temperatures
15 km/h
Avg max wind
59 %
Avg humidity
America Weather September
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Temperatures trend during September in America
See the weather trend as well as the moving average line
September weather in America day by day
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| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Sunny | 36° /21° | 0 mm | 9 | |
| Sept. 2 |  Patchy rain possible | 35° /23° | 0.2 mm | 9 | |
| Sept. 3 | Patchy rain possible | 35° /22° | 0.1 mm | 9 | |
| Sept. 4 |  Partly cloudy | 36° /23° | 0 mm | 9 | |
| Sept. 5 |  Overcast | 38° /23° | 0 mm | 9 | |
| Sept. 6 | Sunny | 34° /24° | 0.1 mm | 9 | |
| Sept. 7 | Overcast | 31° /20° | 0 mm | 7 | |
| Sept. 8 | Overcast | 33° /18° | 0 mm | 9 | |
| Sept. 9 |  Heavy rain at times | 34° /23° | 2.1 mm | 9 | |
| Sept. 10 |  Moderate or heavy rain shower | 29° /24° | 9.8 mm | 4 | |
| Sept. 11 | Patchy rain possible | 28° /22° | 11.7 mm | 1 | |
| Sept. 12 | Patchy rain possible | 32° /21° | 1.5 mm | 8 | |
| Sept. 13 | Heavy rain at times | 34° /23° | 2.8 mm | 5 | |
| Sept. 14 | Sunny | 32° /18° | 0 mm | 8 | |
| Sept. 15 |  Cloudy | 35° /23° | 0 mm | 8 | |
| Sept. 16 | Overcast | 35° /25° | 0 mm | 7 | |
| Sept. 17 | Partly cloudy | 35° /24° | 0 mm | 7 | |
| Sept. 18 | Patchy rain possible | 36° /24° | 0.1 mm | 7 | |
| Sept. 19 | Sunny | 36° /24° | 0 mm | 7 | |
| Sept. 20 | Overcast | 34° /23° | 0 mm | 3 | |
| Sept. 21 | Moderate or heavy rain shower | 31° /20° | 4.9 mm | 2 | |
| Sept. 22 | Moderate or heavy rain shower | 23° /17° | 6.7 mm | 7 | |
| Sept. 23 | Overcast | 22° /15° | 0 mm | 5 | |
| Sept. 24 | Overcast | 24° /15° | 0 mm | 7 | |
| Sept. 25 | Overcast | 25° /14° | 0 mm | 6 | |
| Sept. 26 | Overcast | 26° /15° | 0 mm | 2 | |
| Sept. 27 | Moderate rain at times | 25° /16° | 0.5 mm | 3 | |
| Sept. 28 | Cloudy | 27° /13° | 0 mm | 6 | |
| Sept. 29 | Overcast | 29° /14° | 0 mm | 6 | |
| Sept. 30 | Cloudy | 31° /17° | 0 mm | 4 | |
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Important Notice
Our weather forecast for America 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 America forecast closer to your planned date for the most up-to-date weather information.
Change Month
America in September - FAQ
What are the expected maximum and minimum temperatures in America during September?
Expect warm days with temperatures around 31°, cooling to mild conditions of 20° after sunset. Perfect for those who enjoy warm weather.
How much rainfall should be expected in America during September?
In September, America can expect light to moderate rainfall, totaling 40.5 mm across approximately 8 days. Occasional showers are possible, and planning ahead for them could be helpful.
What are the typical wind conditions in America during September?
The average wind speed in America during September is 15 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in America
Explore the daily rainfall trends and prepare for Americas September weather 💧
Typically, America has 8 rainy days in September with a total of 40.5 mm of rainfall.
UV exposure in America during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
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