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August 12th, 2026 :: 12:56 pm CDT   

Local Weather Report for
Fairfield
Illinois, United States

 Current Fairfield Weather Conditions Updated August 12th at 11:55 am 
Overcast
Temperature:90°F Dew Point:75°F
Barometer:29.89 inHg Wind:calm
Humidity:62.7% Visibility:0M
 
 Fairfield Weather Forecast Summary  
 
Today
Aug 12th
Thursday
Aug 13th
Friday
Aug 14th
Saturday
Aug 15th
Sunday
Aug 16th
Mostly Sunny Mostly Sunny Mostly Sunny Sunny Mostly Sunny
97°F
94°F
72°F
101°F
76°F
102°F
78°F
97°F
78°F
 
 Fairfield Detailed Weather Forecast  
 
Wednesday, August 12th, 2026
Afternoon Temperature: 96°F
Sunny. Chance of a thunderstorm. Windy at times.
Evening Temperature: 82°F
Mostly clear. Chance of a thunderstorm.
Thursday, August 13th, 2026
Overnight Temperature: 72°F
Mostly clear with a chance of showers. Slight chance of a thunderstorm. Windy at times.
Morning Temperature: 79°F
A mix of sun and cloud. Chance of a thunderstorm.
Afternoon Temperature: 91°F
Sunny with cloudy periods. Chance of a thunderstorm.
Evening Temperature: 81°F
Mostly clear. Chance of a thunderstorm.
Friday, August 14th, 2026
Overnight Temperature: 77°F
Mostly clear. Chance of a thunderstorm. Windy at times.
Morning Temperature: 82°F
Mostly sunny. Chance of a thunderstorm. Windy at times.
Afternoon Temperature: 99°F
Mostly sunny. Chance of a thunderstorm.
Evening Temperature: 86°F
Clear. Chance of a thunderstorm. Windy at times.
Saturday, August 15th, 2026
Overnight Temperature: 80°F
Clear.
Morning Temperature: 84°F
Sunny. Slight chance of a thunderstorm.
Afternoon Temperature: 102°F
Sunny. Slight chance of a thunderstorm.
Evening Temperature: 86°F
Clear. Chance of a thunderstorm. Windy at times.
Sunday, August 16th, 2026
Overnight Temperature: 82°F
Clear. Windy at times.
Morning Temperature: 85°F
Mostly sunny. Chance of a thunderstorm. Windy at times.
Afternoon Temperature: 96°F
Sunny. Chance of a thunderstorm.
Evening Temperature: 85°F
Mostly clear with a slight chance of showers or thundershowers.
Monday, August 17th, 2026
Overnight Temperature: 70°F
Mostly clear with a chance of showers. Windy.
Morning Temperature: 73°F
Mostly sunny with a chance of showers.
Afternoon Temperature: 86°F
Mostly sunny. Chance of a thunderstorm. Windy at times.
Evening Temperature: 77°F
Clear. Slight chance of a thunderstorm. Windy at times.
Tuesday, August 18th, 2026
Overnight Temperature: 68°F
Clear.
Morning Temperature: 72°F
Mostly sunny.
Afternoon Temperature: 85°F
Sunny with cloudy periods.
Evening Temperature: 74°F
Clear.
Wednesday, August 19th, 2026
Overnight Temperature: 66°F
Clear.
Morning Temperature: 73°F
Mostly sunny.
Afternoon Temperature: 90°F
Sunny.
Evening Temperature: 79°F
Clear. Slight chance of a thunderstorm.
Thursday, August 20th, 2026
Overnight Temperature: 72°F
Mostly clear.
Morning Temperature: 79°F
Sunny.
Afternoon Temperature: 101°F
Mostly sunny. Chance of a thunderstorm. Windy at times.
Evening Temperature: 89°F
A mix of cloudy and clear skies. Chance of a thunderstorm. Windy at times.





 

  [ Local Weather Report ]
Flora, IL 
11:55 AM  88°F
 
 
Albion, IL 
 
Mcleansboro, IL 
 
Carmi, IL 
 
Mount Vernon, IL 
11:56 AM  91°F
 
 
Olney, IL 
11:50 AM  90°F
 
 
Salem, IL 
11:55 AM  90°F
 
 
Centralia, IL 
11:55 AM  90°F
 
 
Benton, IL 
 
Harrisburg, IL 
11:55 AM  91°F
 

 
This WeatherCity Weather Forecast for Fairfield, 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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