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May 13th, 2026 :: 12:02 pm CDT   

Local Weather Report for
Mchenry
Illinois, United States

 Mchenry Weather Forecast Summary  
 
Today
May 13th
Thursday
May 14th
Friday
May 15th
Saturday
May 16th
Sunday
May 17th
Mostly Sunny Mostly Sunny Mix of Cloud and Sun Mostly Sunny Mix of Cloud and Sun
53°F
63°F
40°F
69°F
47°F
82°F
58°F
65°F
52°F
 
 Mchenry Detailed Weather Forecast  
 
Wednesday, May 13th, 2026
Afternoon Temperature: 50°F
A mix of sun and cloud. Windy.
Evening Temperature: 47°F
Clear.
Thursday, May 14th, 2026
Overnight Temperature: 41°F
Clear.
Morning Temperature: 49°F
Sunny.
Afternoon Temperature: 62°F
Mostly sunny.
Evening Temperature: 48°F
Mostly clear. Windy at times.
Friday, May 15th, 2026
Overnight Temperature: 48°F
Cloudy with a slight chance of showers. Windy at times.
Morning Temperature: 51°F
Mostly cloudy with a chance of showers. Windy at times.
Afternoon Temperature: 66°F
A mix of cloud and sun with a slight chance of showers. Windy.
Evening Temperature: 64°F
Mostly clear.
Saturday, May 16th, 2026
Overnight Temperature: 60°F
Clear.
Morning Temperature: 69°F
Mostly sunny. Chance of a thunderstorm.
Afternoon Temperature: 82°F
A mix of sun and cloud. Chance of a thunderstorm.
Evening Temperature: 61°F
Clear with cloudy periods with a chance of showers. Windy at times.
Sunday, May 17th, 2026
Overnight Temperature: 57°F
A mix of clear and cloudy skies with a chance of showers. Windy at times.
Morning Temperature: 57°F
Sunny with cloudy periods with a slight chance of showers.
Afternoon Temperature: 64°F
Mostly cloudy with a chance of showers.
Evening Temperature: 64°F
A mix of cloudy and clear skies with a chance of showers or thundershowers.
Monday, May 18th, 2026
Overnight Temperature: 70°F
Clear. Chance of a thunderstorm. Windy at times.
Morning Temperature: 73°F
Sunny. Chance of a thunderstorm. Windy.
Afternoon Temperature: 83°F
Sunny with cloudy periods with a slight chance of showers or thundershowers. Windy.
Evening Temperature: 76°F
Clear with cloudy periods with a slight chance of showers or thundershowers. Wind 20 to 30 mph.
Tuesday, May 19th, 2026
Overnight Temperature: 72°F
Mostly clear with a slight chance of showers or thundershowers. Wind 20 to 30 mph.
Morning Temperature: 66°F
A mix of cloud and sun. Wind 20 to 30 mph.
Afternoon Temperature: 64°F
Mostly sunny. Windy.
Evening Temperature: 57°F
A mix of cloudy and clear skies. Windy.
Wednesday, May 20th, 2026
Overnight Temperature: 52°F
Clear with cloudy periods. Windy at times.
Morning Temperature: 52°F
Sunny. Windy at times.
Afternoon Temperature: 64°F
Sunny. Windy at times.
Evening Temperature: 54°F
Clear with cloudy periods. Windy at times.
Thursday, May 21st, 2026
Overnight Temperature: 54°F
Mostly cloudy. Windy at times.
Morning Temperature: 60°F
Mostly sunny. Windy.
Afternoon Temperature: 66°F
Sunny. Windy.
Evening Temperature: 53°F
Clear. Windy at times.





 

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This WeatherCity Weather Forecast for Mchenry, 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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