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June 25th, 2026 :: 3:19 pm CDT   

Local Weather Report for
Eureka
Illinois, United States

 Eureka Weather Forecast Summary  
 
Today
Jun 25th
Friday
Jun 26th
Saturday
Jun 27th
Sunday
Jun 28th
Monday
Jun 29th
Mix of Sun and Cloud Mix of Cloud and Sun Thundershowers Thundershowers Mostly Sunny
72°F
73°F
64°F
79°F
63°F
87°F
70°F
89°F
74°F
 
 Eureka Detailed Weather Forecast  
 
Thursday, June 25th, 2026
Afternoon Temperature: 69°F
A mix of cloud and sun.
Evening Temperature: 67°F
Mostly clear.
Friday, June 26th, 2026
Overnight Temperature: 64°F
A mix of cloudy and clear skies.
Morning Temperature: 66°F
Mostly cloudy. Windy at times.
Afternoon Temperature: 71°F
Cloudy with sunny periods.
Evening Temperature: 68°F
Clear with cloudy periods.
Saturday, June 27th, 2026
Overnight Temperature: 63°F
Clear.
Morning Temperature: 68°F
A mix of sun and cloud.
Afternoon Temperature: 78°F
A mix of sun and cloud. Chance of a thunderstorm. Windy at times.
Evening Temperature: 74°F
Cloudy with a few showers. Chance of a thunderstorm.
Sunday, June 28th, 2026
Overnight Temperature: 70°F
A mix of cloudy and clear skies with a few showers. Slight chance of a thunderstorm.
Morning Temperature: 74°F
Sunny with cloudy periods with showers likely. Chance of a thunderstorm.
Afternoon Temperature: 86°F
Sunny. Chance of a thunderstorm.
Evening Temperature: 81°F
Clear. Chance of a thunderstorm.
Monday, June 29th, 2026
Overnight Temperature: 75°F
Mostly clear. Chance of a thunderstorm.
Morning Temperature: 79°F
Mostly sunny. Chance of a thunderstorm.
Afternoon Temperature: 89°F
Mostly sunny. Chance of a thunderstorm. Windy at times.
Evening Temperature: 82°F
Clear. Chance of a thunderstorm.
Tuesday, June 30th, 2026
Overnight Temperature: 75°F
Mostly clear. Chance of a thunderstorm.
Morning Temperature: 80°F
Mostly sunny. Chance of a thunderstorm.
Afternoon Temperature: 90°F
Sunny. Chance of a thunderstorm.
Evening Temperature: 83°F
Clear. Chance of a thunderstorm.
Wednesday, July 1st, 2026
Overnight Temperature: 76°F
Mostly clear. Chance of a thunderstorm.
Morning Temperature: 82°F
Mostly sunny. Chance of a thunderstorm.
Afternoon Temperature: 91°F
Sunny with a slight chance of showers or thundershowers.
Evening Temperature: 85°F
Clear with a slight chance of showers or thundershowers.
Thursday, July 2nd, 2026
Overnight Temperature: 77°F
Clear. Chance of a thunderstorm.
Morning Temperature: 82°F
Sunny. Chance of a thunderstorm.
Afternoon Temperature: 90°F
Sunny. Chance of a thunderstorm.
Evening Temperature: 84°F
Clear. Chance of a thunderstorm.
Friday, July 3rd, 2026
Overnight Temperature: 69°F
Clear.
Morning Temperature: 78°F
Sunny. Chance of a thunderstorm.
Afternoon Temperature: 88°F
Sunny. Chance of a thunderstorm.
Evening Temperature: 82°F
Clear. Chance of a thunderstorm.





 

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This WeatherCity Weather Forecast for Eureka, 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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