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June 10th, 2026 :: 3:33 am CDT   

Local Weather Report for
Petersburg
Illinois, United States

 Petersburg Weather Forecast Summary  
 
Today
Jun 10th
Thursday
Jun 11th
Friday
Jun 12th
Saturday
Jun 13th
Sunday
Jun 14th
Mostly Sunny Mostly Sunny Mostly Cloudy with Showers Mix of Sun and Cloud Mix of Sun and Cloud
90°F
92°F
75°F
81°F
61°F
80°F
63°F
73°F
66°F
 
 Petersburg Detailed Weather Forecast  
 
Wednesday, June 10th, 2026
Overnight Temperature: 75°F
Clear with a slight chance of showers or thundershowers. Windy at times.
Morning Temperature: 79°F
Sunny. Chance of a thunderstorm. Windy at times.
Afternoon Temperature: 90°F
Mostly sunny. Chance of a thunderstorm. Windy.
Evening Temperature: 83°F
Clear. Chance of a thunderstorm. Windy.
Thursday, June 11th, 2026
Overnight Temperature: 77°F
Mostly clear. Chance of a thunderstorm. Windy at times.
Morning Temperature: 80°F
Mostly sunny. Chance of a thunderstorm. Windy at times.
Afternoon Temperature: 91°F
Sunny. Chance of a thunderstorm. Windy.
Evening Temperature: 84°F
Clear with cloudy periods with a slight chance of showers or thundershowers. Windy.
Friday, June 12th, 2026
Overnight Temperature: 64°F
A mix of clear and cloudy skies with showers likely. Windy at times.
Morning Temperature: 66°F
Sunny with a chance of showers.
Afternoon Temperature: 79°F
Sunny.
Evening Temperature: 73°F
Clear.
Saturday, June 13th, 2026
Overnight Temperature: 64°F
Clear.
Morning Temperature: 70°F
Sunny with cloudy periods.
Afternoon Temperature: 79°F
Mostly cloudy. Chance of a thunderstorm. Windy at times.
Evening Temperature: 74°F
A mix of clear and cloudy skies. Chance of a thunderstorm.
Sunday, June 14th, 2026
Overnight Temperature: 68°F
Mostly clear. Windy at times.
Morning Temperature: 70°F
A mix of cloud and sun with a chance of showers.
Afternoon Temperature: 73°F
A mix of cloud and sun with a chance of showers. Windy at times.
Evening Temperature: 68°F
A mix of cloudy and clear skies.
Monday, June 15th, 2026
Overnight Temperature: 66°F
A mix of cloudy and clear skies.
Morning Temperature: 64°F
Cloudy with rain.
Afternoon Temperature: 63°F
Cloudy with periods of rain. Windy at times.
Evening Temperature: 59°F
A mix of cloudy and clear skies with a chance of showers. Windy at times.
Tuesday, June 16th, 2026
Overnight Temperature: 54°F
Clear with cloudy periods.
Morning Temperature: 59°F
Mostly sunny.
Afternoon Temperature: 71°F
A mix of sun and cloud.
Evening Temperature: 66°F
Mostly clear. Slight chance of a thunderstorm.
Wednesday, June 17th, 2026
Overnight Temperature: 60°F
Mostly clear with a slight chance of showers.
Morning Temperature: 66°F
Sunny. Slight chance of a thunderstorm.
Afternoon Temperature: 77°F
Sunny. Chance of a thunderstorm. Windy at times.
Evening Temperature: 67°F
Clear with a slight chance of showers or thundershowers. Windy at times.
Thursday, June 18th, 2026
Overnight Temperature: 58°F
Clear.
Morning Temperature: 64°F
Sunny.
Afternoon Temperature: 78°F
Sunny.
Evening Temperature: 72°F
Clear. Windy at times.





 

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This WeatherCity Weather Forecast for Petersburg, 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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