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May 12th, 2026 :: 4:20 pm CDT   

Local Weather Report for
Casey
Illinois, United States

 Casey Weather Forecast Summary  
 
Today
May 12th
Wednesday
May 13th
Thursday
May 14th
Friday
May 15th
Saturday
May 16th
Mostly Sunny Sunny Mostly Sunny Mostly Sunny Thundershowers
74°F
64°F
47°F
64°F
41°F
76°F
48°F
73°F
64°F
 
 Casey Detailed Weather Forecast  
 
Tuesday, May 12th, 2026
Evening Temperature: 66°F
A mix of cloudy and clear skies. Windy at times.
Wednesday, May 13th, 2026
Overnight Temperature: 58°F
Clear with cloudy periods with a chance of showers. Windy at times.
Morning Temperature: 56°F
Sunny. Windy.
Afternoon Temperature: 64°F
Sunny. Windy.
Evening Temperature: 51°F
Clear. Windy at times.
Thursday, May 14th, 2026
Overnight Temperature: 42°F
Clear.
Morning Temperature: 50°F
Sunny.
Afternoon Temperature: 62°F
Sunny.
Evening Temperature: 55°F
Mostly clear.
Friday, May 15th, 2026
Overnight Temperature: 48°F
Mostly clear.
Morning Temperature: 55°F
Sunny with cloudy periods with a slight chance of showers. Windy.
Afternoon Temperature: 73°F
Sunny with cloudy periods. Chance of a thunderstorm. Windy.
Evening Temperature: 70°F
Mostly clear. Chance of a thunderstorm. Windy at times.
Saturday, May 16th, 2026
Overnight Temperature: 65°F
Cloudy with periods of rain.
Morning Temperature: 68°F
Cloudy with periods of rain. Chance of a thunderstorm. Windy at times.
Afternoon Temperature: 73°F
A mix of cloud and sun with a chance of showers or thundershowers. Windy at times.
Evening Temperature: 67°F
Clear with cloudy periods with a slight chance of showers or thundershowers. Windy at times.
Sunday, May 17th, 2026
Overnight Temperature: 60°F
Clear.
Morning Temperature: 69°F
Mostly sunny. Chance of a thunderstorm. Windy.
Afternoon Temperature: 81°F
Mostly sunny. Chance of a thunderstorm. Windy.
Evening Temperature: 72°F
Clear. Chance of a thunderstorm. Windy at times.
Monday, May 18th, 2026
Overnight Temperature: 66°F
A mix of clear and cloudy skies. Windy at times.
Morning Temperature: 68°F
A mix of cloud and sun with showers likely. Windy at times.
Afternoon Temperature: 79°F
Mostly cloudy with showers likely. Chance of a thunderstorm. Windy.
Evening Temperature: 70°F
A mix of cloudy and clear skies with showers. Chance of a thunderstorm. Windy at times.
Tuesday, May 19th, 2026
Overnight Temperature: 66°F
Cloudy with showers.
Morning Temperature: 67°F
Cloudy with periods of rain. Windy.
Afternoon Temperature: 70°F
Cloudy with a few showers. Slight chance of a thunderstorm. Windy at times.
Evening Temperature: 69°F
Mostly cloudy with a few showers. Slight chance of a thunderstorm. Windy at times.
Wednesday, May 20th, 2026
Overnight Temperature: 65°F
Mostly cloudy with a few showers. Slight chance of a thunderstorm. Windy at times.
Morning Temperature: 63°F
A mix of sun and cloud with showers likely. Windy at times.
Afternoon Temperature: 70°F
Sunny. Windy at times.
Evening Temperature: 64°F
Clear.





 

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This WeatherCity Weather Forecast for Casey, 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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