easeweather.com
Units
°C
°F
Sangamon County
Forecast Today Tomorrow
more
Illinois United States

Weather in Sangamon County for September 2025

Your guide to Sangamon County weather in September - trends and predictions

    Temperatures

  • In general, the average temperature in Sangamon County at the beginning of September is 26.1 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 22.6 °F by the end of September.

  • Rain 🌧️

  • With an average of 3 rainy days, Sangamon County experiences minimal rainfall in September.

  • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
27
Dry days
Average rainy days
3
Rainy days
Average snowy days
0
Snow days
Average temperatures
27°/15°
Temperatures
Average wind speed
19 km/h
Avg max wind
Average humidity
61 %
Avg humidity

Sangamon County Weather September

Move between months or click on a day
Select a date

You can click on date

Access Sangamon County weather forecasts with a simple click. Select any date for comprehensive insights on temperature, rainfall, and wind conditions.
Got it

Temperatures trend during September in Sangamon County

See the weather trend as well as the moving average line

September weather day by day

Click on a date for more information
Date Weather Temperatures Rain UV More
Sept. 1 Sunny
Sunny
28° /16° 0 mm 7
Sept. 2 Sunny
Sunny
24° /12° 0 mm 6
Sept. 3 Overcast
Overcast
24° /12° 0 mm 5
Sept. 4 Sunny
Sunny
30° /12° 0 mm 8
Sept. 5 Mist
Mist
31° /17° 0 mm 7
Sept. 6 Partly cloudy
Partly cloudy
25° /13° 0.2 mm 7
Sept. 7 Sunny
Sunny
21° /7° 0 mm 6
Sept. 8 Sunny
Sunny
24° /6° 0 mm 6
Sept. 9 Sunny
Sunny
29° /12° 0 mm 7
Sept. 10 Sunny
Sunny
31° /14° 0 mm 8
Sept. 11 Sunny
Sunny
33° /16° 0 mm 8
Sept. 12 Sunny
Sunny
32° /17° 0 mm 8
Sept. 13 Light rain
Light rain
25° /17° 3 mm 6
Sept. 14 Partly cloudy
Partly cloudy
31° /17° 0 mm 8
Sept. 15 Patchy rain possible
Patchy rain possible
32° /19° 0.1 mm 7
Sept. 16 Sunny
Sunny
33° /18° 0 mm 8
Sept. 17 Cloudy
Cloudy
28° /14° 0 mm 6
Sept. 18 Cloudy
Cloudy
29° /15° 0 mm 6
Sept. 19 Partly cloudy
Partly cloudy
31° /17° 0 mm 8
Sept. 20 Overcast
Overcast
30° /17° 0 mm 7
Sept. 21 Mist
Mist
28° /17° 0 mm 6
Sept. 22 Moderate or heavy rain shower
Moderate or heavy rain shower
23° /19° 19.6 mm 5
Sept. 23 Overcast
Overcast
20° /15° 0 mm 5
Sept. 24 Heavy rain
Heavy rain
18° /15° 144.4 mm 4
Sept. 25 Sunny
Sunny
23° /11° 0 mm 6
Sept. 26 Overcast
Overcast
24° /11° 0 mm 5
Sept. 27 Overcast
Overcast
23° /15° 0 mm 5
Sept. 28 Overcast
Overcast
23° /17° 0 mm 5
Sept. 29 Overcast
Overcast
23° /18° 0 mm 5
Sept. 30 Mist
Mist
24° /17° 0 mm 5
Next
Important Notice
Our weather forecast for Sangamon 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 Sangamon County forecast closer to your planned date for the most up-to-date weather information.

Sangamon County in September - FAQ

What are the expected maximum and minimum temperatures in Sangamon County during September?
During September, expect a variety of temperatures with highs around 27° and lows near 15°, suitable for diverse activities and preferences.
How much rainfall should be expected in Sangamon County during September?
Significant rainfall exceeding 167.3 mm is expected in Sangamon County during September, occurring over more than 3 days. Preparing for wet conditions is recommended in your planning.
What are the typical wind conditions in Sangamon County during September?
The average wind speed in Sangamon County during September is 19 km/h, suggesting breezy to windy conditions, depending on your activities.

September rainfall patterns in Sangamon County

Explore the daily rainfall trends and prepare for Sangamon Countys September weather 💧

UV exposure in Sangamon County during September

Stay informed about UV levels for safe outdoor activities throughout the month of September ☀️
Top locations in Sangamon County
Select a location for an accurate weather forecast
More Locations

Quick links

Location coordinates Where is Sangamon County?

Get accurate weather forecasts for Sangamon County, located at latitude 39.802 and longitude -89.644. Stay updated with localized weather information tailored for Sangamon County.

Found a mistake?
We appreciate your attention to details. Tell us here.