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September 12th, 2025 :: 12:28 pm CDT   

Local Weather Report for
Decatur
Illinois, United States

 Current Decatur Weather Conditions Updated September 12th at 10:54 am 
Temperature:82°F Dew Point:61°F
Barometer:30.21 inHg Wind:N 15 Mph
Humidity:48.1% Visibility:0M
 
 Decatur Weather Forecast Summary  
 
Today
Sep 12th
Saturday
Sep 13th
Sunday
Sep 14th
Monday
Sep 15th
Tuesday
Sep 16th
Cloudy Cloudy Thundershowers Thundershowers Cloudy
90°F
92°F
66°F
97°F
67°F
97°F
68°F
97°F
68°F
 
 Decatur Detailed Weather Forecast  
 
Friday, September 12th, 2025
Afternoon Temperature: 87°F
Cloudy.
Evening Temperature: 68°F
Cloudy.
Saturday, September 13th, 2025
Overnight Temperature: 68°F
A mix of cloudy and clear skies.
Morning Temperature: 87°F
Cloudy with a slight chance of showers. Windy at times.
Afternoon Temperature: 85°F
Cloudy with a chance of showers. Slight chance of a thunderstorm. Windy at times.
Evening Temperature: 68°F
A mix of cloudy and clear skies with a chance of showers.
Sunday, September 14th, 2025
Overnight Temperature: 67°F
Cloudy with showers likely.
Morning Temperature: 85°F
A mix of cloud and sun. Chance of a thunderstorm.
Afternoon Temperature: 93°F
Sunny. Chance of a thunderstorm.
Evening Temperature: 73°F
Cloudy. Slight chance of a thunderstorm.
Monday, September 15th, 2025
Overnight Temperature: 69°F
Cloudy.
Morning Temperature: 88°F
Sunny. Chance of a thunderstorm.
Afternoon Temperature: 91°F
Cloudy with a chance of showers or thundershowers.
Evening Temperature: 74°F
Cloudy with showers likely. Slight chance of a thunderstorm.
Tuesday, September 16th, 2025
Overnight Temperature: 68°F
A mix of cloudy and clear skies with a chance of showers.
Morning Temperature: 86°F
Sunny with cloudy periods. Chance of a thunderstorm.
Afternoon Temperature: 88°F
Cloudy. Chance of a thunderstorm. Windy at times.
Evening Temperature: 70°F
Cloudy with a slight chance of showers.
Wednesday, September 17th, 2025
Overnight Temperature: 68°F
Cloudy.
Morning Temperature: 87°F
Sunny with cloudy periods. Chance of a thunderstorm.
Afternoon Temperature: 92°F
Sunny with cloudy periods. Chance of a thunderstorm.
Evening Temperature: 72°F
Cloudy with a chance of showers.
Thursday, September 18th, 2025
Overnight Temperature: 67°F
A mix of cloudy and clear skies.
Morning Temperature: 83°F
Cloudy. Chance of a thunderstorm.
Afternoon Temperature: 88°F
Cloudy. Chance of a thunderstorm.
Evening Temperature: 71°F
Cloudy with showers likely. Windy at times.
Friday, September 19th, 2025
Overnight Temperature: 67°F
Cloudy with a chance of showers.
Morning Temperature: 79°F
Sunny. Chance of a thunderstorm. Windy at times.
Afternoon Temperature: 83°F
Sunny with cloudy periods. Windy at times.
Evening Temperature: 68°F
Cloudy with a chance of showers.
Saturday, September 20th, 2025
Overnight Temperature: 62°F
Clear.
Morning Temperature: 77°F
Sunny. Windy at times.
Afternoon Temperature: 80°F
Sunny. Windy at times.
Evening Temperature: 64°F
Clear.





 

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10:53 AM  82°F
Mostly Sunny

This WeatherCity Weather Forecast for Decatur, Illinois, United States is computed using a computer-generated forecast model and should be considered experimental. Please confirm this weather information with your official weather information office

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