McLean County (Bloomington)
September
Weather in McLean County, Illinois for September 2027
Your guide to McLean County weather in September - trends and predictions
McLean County experiences moderate rainfall in September, with an average of 7 rainy days and a total precipitation of 83.8 mm.
Is September a good time to visit McLean County? check out the best time to travel to McLean County page.
✨ Is September a good time to visit McLean County? – Ask the AI Weatherman
Rain 🌧️
More
23
Dry days
7
Rainy days
0
Snow days
26°/15°
Temperatures
17 km/h
Avg max wind
71 %
Avg humidity
McLean County Weather September
Move between months or click on a day
Temperatures trend during September in McLean County
See the weather trend as well as the moving average line
September weather in McLean County day by day
Click on a date for more information
| Date | Weather | Temperatures | Rain | UV | More |
|---|---|---|---|---|---|
| Sept. 1 |  Partly cloudy | 31° /17° | 0 mm | 8 | |
| Sept. 2 |  Fog | 32° /17° | 0 mm | 8 | |
| Sept. 3 |  Moderate rain | 30° /18° | 12.5 mm | 8 | |
| Sept. 4 |  Cloudy | 29° /17° | 0 mm | 8 | |
| Sept. 5 |  Overcast | 26° /17° | 0 mm | 7 | |
| Sept. 6 | Mist | 25° /13° | 0 mm | 7 | |
| Sept. 7 |  Sunny | 25° /11° | 0 mm | 7.7 | |
| Sept. 8 | Sunny | 27° /11° | 0 mm | 7 | |
| Sept. 9 | Moderate rain | 24° /15° | 14.9 mm | 4 | |
| Sept. 10 |  Patchy rain possible | 25° /15° | 1.8 mm | 4 | |
| Sept. 11 | Cloudy | 28° /16° | 0 mm | 6 | |
| Sept. 12 | Overcast | 29° /16° | 0 mm | 7 | |
| Sept. 13 | Cloudy | 28° /18° | 0.2 mm | 7 | |
| Sept. 14 |  Thundery outbreaks possible | 29° /16° | 0 mm | 7 | |
| Sept. 15 |  Light rain | 31° /21° | 2.8 mm | 3 | |
| Sept. 16 | Light rain | 30° /19° | 6.4 mm | 4 | |
| Sept. 17 | Light rain | 31° /17° | 4.8 mm | 5 | |
| Sept. 18 | Light rain | 26° /17° | 8.7 mm | 4 | |
| Sept. 19 | Thundery outbreaks possible | 26° /18° | 0.6 mm | 4 | |
| Sept. 20 | Thundery outbreaks possible | 25° /17° | 11.7 mm | 3 | |
| Sept. 21 | Mist | 20° /17° | 0 mm | 2 | |
| Sept. 22 | Light rain | 21° /13° | 3.3 mm | 3 | |
| Sept. 23 | Fog | 23° /16° | 0 mm | 2 | |
| Sept. 24 | Light rain | 21° /15° | 7.7 mm | 2 | |
| Sept. 25 | Fog | 21° /13° | 0 mm | 2 | |
| Sept. 26 | Fog | 23° /11° | 0 mm | 4 | |
| Sept. 27 | Sunny | 25° /13° | 0 mm | 3 | |
| Sept. 28 | Sunny | 26° /13° | 0 mm | 5 | |
| Sept. 29 | Sunny | 28° /14° | 0 mm | 4 | |
| Sept. 30 | Light rain | 25° /17° | 8.4 mm | 3 | |
| Next | |||||
Important Notice
Our weather forecast for McLean County 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 McLean County forecast closer to your planned date for the most up-to-date weather information.
Change Month
McLean County in September - FAQ
What are the expected maximum and minimum temperatures in McLean County during September?
During September, expect a variety of temperatures with highs around 26° and lows near 15°, suitable for diverse activities and preferences.
How much rainfall should be expected in McLean County during September?
Moderate rainfall is anticipated in McLean County during September, with a total of 83.8 mm spread over approximately 7 days. Considering plans for rainy days is advisable.
What are the typical wind conditions in McLean County during September?
The average wind speed in McLean County during September is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
September rainfall patterns in McLean County
Explore the daily rainfall trends and prepare for McLean Countys September weather 💧
Typically, McLean County has 7 rainy days in September with a total of 83.8 mm of rainfall.
UV exposure in McLean County during September
Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Top locations in McLean County
Select a location for an accurate weather forecast
More Locations Quick links
More McLean County weather pages
You are here
Found a mistake?
We appreciate your attention to details. Tell us here.