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May 15th, 2026 :: 10:58 am CDT   

Local Weather Report for
Mchenry
Illinois, United States

 Mchenry Weather Forecast Summary  
 
Today
May 15th
Saturday
May 16th
Sunday
May 17th
Monday
May 18th
Tuesday
May 19th
Mix of Sun and Cloud Thundershowers Mix of Sun and Cloud Thundershowers Thundershowers
70°F
79°F
62°F
74°F
62°F
75°F
64°F
72°F
54°F
 
 Mchenry Detailed Weather Forecast  
 
Friday, May 15th, 2026
Afternoon Temperature: 68°F
Sunny. Windy.
Evening Temperature: 63°F
Clear. Windy at times.
Saturday, May 16th, 2026
Overnight Temperature: 63°F
Mostly cloudy with showers likely. Windy.
Morning Temperature: 66°F
Sunny with cloudy periods with a chance of showers. Slight chance of a thunderstorm. Windy at times.
Afternoon Temperature: 78°F
A mix of sun and cloud. Slight chance of a thunderstorm. Windy at times.
Evening Temperature: 69°F
A mix of cloudy and clear skies. Chance of a thunderstorm.
Sunday, May 17th, 2026
Overnight Temperature: 63°F
Clear with cloudy periods with a chance of showers. Slight chance of a thunderstorm.
Morning Temperature: 67°F
Sunny with cloudy periods with a chance of showers. Slight chance of a thunderstorm. Windy at times.
Afternoon Temperature: 72°F
Mostly cloudy. Chance of a thunderstorm. Windy at times.
Evening Temperature: 73°F
Clear with cloudy periods. Chance of a thunderstorm. Windy at times.
Monday, May 18th, 2026
Overnight Temperature: 69°F
Clear. Slight chance of a thunderstorm. Windy.
Morning Temperature: 72°F
Sunny with cloudy periods with a slight chance of showers or thundershowers. Windy.
Afternoon Temperature: 68°F
A mix of cloud and sun with showers likely. Chance of a thunderstorm. Windy.
Evening Temperature: 73°F
Clear with cloudy periods with showers likely. Chance of a thunderstorm. Windy.
Tuesday, May 19th, 2026
Overnight Temperature: 68°F
A mix of cloudy and clear skies with showers likely. Chance of a thunderstorm. Windy.
Morning Temperature: 67°F
A mix of sun and cloud with a few showers. Windy.
Afternoon Temperature: 65°F
A mix of cloud and sun. Windy at times.
Evening Temperature: 57°F
Mostly clear. Windy at times.
Wednesday, May 20th, 2026
Overnight Temperature: 47°F
Mostly clear. Windy at times.
Morning Temperature: 50°F
Sunny. Windy at times.
Afternoon Temperature: 59°F
Mostly sunny. Windy at times.
Evening Temperature: 50°F
Clear.
Thursday, May 21st, 2026
Overnight Temperature: 42°F
Clear.
Morning Temperature: 48°F
Sunny with cloudy periods. Windy at times.
Afternoon Temperature: 53°F
A mix of cloud and sun.
Evening Temperature: 44°F
Clear with cloudy periods.
Friday, May 22nd, 2026
Overnight Temperature: 40°F
Clear with cloudy periods.
Morning Temperature: 52°F
Sunny.
Afternoon Temperature: 64°F
Sunny. Windy at times.
Evening Temperature: 54°F
Clear.
Saturday, May 23rd, 2026
Overnight Temperature: 52°F
Mostly clear.
Morning Temperature: 59°F
Cloudy. Windy.
Afternoon Temperature: 63°F
Cloudy with showers likely. Windy at times.
Evening Temperature: 62°F
Mostly cloudy with a chance of showers. 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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