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July 16th, 2026 :: 12:46 pm CDT   

Local Weather Report for
Marengo
Illinois, United States

 Marengo Weather Forecast Summary  
 
Today
Jul 16th
Friday
Jul 17th
Saturday
Jul 18th
Sunday
Jul 19th
Monday
Jul 20th
Mostly Sunny Mostly Sunny Sunny Mostly Sunny Mostly Sunny
87°F
85°F
69°F
85°F
71°F
82°F
63°F
85°F
64°F
 
 Marengo Detailed Weather Forecast  
 
Thursday, July 16th, 2026
Afternoon Temperature: 86°F
Sunny with a slight chance of showers or thundershowers.
Evening Temperature: 74°F
Mostly clear with a slight chance of showers.
Friday, July 17th, 2026
Overnight Temperature: 69°F
Mostly clear.
Morning Temperature: 75°F
Sunny. Chance of a thunderstorm.
Afternoon Temperature: 84°F
Sunny with a chance of showers or thundershowers.
Evening Temperature: 77°F
Mostly clear with a chance of showers or thundershowers.
Saturday, July 18th, 2026
Overnight Temperature: 71°F
Clear with a slight chance of showers or thundershowers.
Morning Temperature: 77°F
Sunny. Chance of a thunderstorm. Windy at times.
Afternoon Temperature: 85°F
Mostly sunny. Chance of a thunderstorm. Windy.
Evening Temperature: 76°F
Clear with a slight chance of showers or thundershowers. Windy at times.
Sunday, July 19th, 2026
Overnight Temperature: 64°F
Clear.
Morning Temperature: 70°F
Sunny.
Afternoon Temperature: 81°F
Sunny.
Evening Temperature: 73°F
Mostly clear.
Monday, July 20th, 2026
Overnight Temperature: 66°F
Clear with cloudy periods.
Morning Temperature: 69°F
A mix of cloud and sun.
Afternoon Temperature: 84°F
Mostly sunny. Chance of a thunderstorm. Windy at times.
Evening Temperature: 80°F
Mostly clear with a chance of showers or thundershowers. Windy at times.
Tuesday, July 21st, 2026
Overnight Temperature: 62°F
Clear with a slight chance of showers. Windy.
Morning Temperature: 60°F
Mostly sunny. Windy at times.
Afternoon Temperature: 73°F
Sunny with cloudy periods.
Evening Temperature: 66°F
A mix of cloudy and clear skies.
Wednesday, July 22nd, 2026
Overnight Temperature: 58°F
Mostly clear.
Morning Temperature: 65°F
Mostly sunny.
Afternoon Temperature: 75°F
Sunny.
Evening Temperature: 68°F
Mostly clear.
Thursday, July 23rd, 2026
Overnight Temperature: 61°F
Clear.
Morning Temperature: 67°F
Mostly sunny.
Afternoon Temperature: 76°F
Mostly sunny.
Evening Temperature: 69°F
Clear with cloudy periods.
Friday, July 24th, 2026
Overnight Temperature: 64°F
A mix of cloudy and clear skies.
Morning Temperature: 69°F
Sunny.
Afternoon Temperature: 79°F
Sunny.
Evening Temperature: 73°F
Mostly clear. Slight chance of a thunderstorm.





 

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This WeatherCity Weather Forecast for Marengo, 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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