Current Conditions
More Information
WeatherCity Home
Switch to Metric Units
[ Almanac ]  
Sunrise:  5:31 am
Sunset:  8:27 pm
[ Moon Phases ]  

First Quarter
Jul 22

Full Moon
Jul 29

Last Quarter
Aug 6

New Moon
Aug 13




July 18th, 2026 :: 5:48 am CDT   

Local Weather Report for
Mchenry
Illinois, United States

 Mchenry Weather Forecast Summary  
 
Today
Jul 18th
Sunday
Jul 19th
Monday
Jul 20th
Tuesday
Jul 21st
Wednesday
Jul 22nd
Sunny Mostly Sunny Mostly Sunny Mostly Sunny Sunny
84°F
79°F
63°F
80°F
63°F
80°F
66°F
72°F
56°F
 
 Mchenry Detailed Weather Forecast  
 
Saturday, July 18th, 2026
Morning Temperature: 78°F
Sunny. Chance of a thunderstorm. Windy at times.
Afternoon Temperature: 84°F
Mostly sunny. Chance of a thunderstorm. Windy at times.
Evening Temperature: 71°F
Clear.
Sunday, July 19th, 2026
Overnight Temperature: 64°F
Mostly clear.
Morning Temperature: 71°F
Sunny.
Afternoon Temperature: 79°F
Sunny.
Evening Temperature: 69°F
Clear.
Monday, July 20th, 2026
Overnight Temperature: 63°F
Mostly clear.
Morning Temperature: 70°F
Sunny with cloudy periods. Windy at times.
Afternoon Temperature: 76°F
A mix of cloud and sun with a chance of showers. Slight chance of a thunderstorm. Windy at times.
Evening Temperature: 70°F
A mix of clear and cloudy skies with a chance of showers. Slight chance of a thunderstorm. Wind 20 to 30 mph.
Tuesday, July 21st, 2026
Overnight Temperature: 70°F
Mostly clear with a chance of showers or thundershowers. Windy.
Morning Temperature: 74°F
Sunny. Chance of a thunderstorm. Windy at times.
Afternoon Temperature: 80°F
Mostly sunny. Slight chance of a thunderstorm. Windy.
Evening Temperature: 70°F
Mostly clear. Slight chance of a thunderstorm. Windy at times.
Wednesday, July 22nd, 2026
Overnight Temperature: 62°F
Clear. Windy at times.
Morning Temperature: 60°F
Sunny. Windy at times.
Afternoon Temperature: 71°F
Sunny. Windy at times.
Evening Temperature: 63°F
Clear.
Thursday, July 23rd, 2026
Overnight Temperature: 55°F
Clear.
Morning Temperature: 63°F
Sunny.
Afternoon Temperature: 77°F
Sunny.
Evening Temperature: 68°F
Clear.
Friday, July 24th, 2026
Overnight Temperature: 61°F
Clear.
Morning Temperature: 67°F
Sunny with cloudy periods. Windy at times.
Afternoon Temperature: 75°F
A mix of cloud and sun. Windy.
Evening Temperature: 63°F
Mostly cloudy.
Saturday, July 25th, 2026
Overnight Temperature: 63°F
A mix of cloudy and clear skies.
Morning Temperature: 66°F
A mix of sun and cloud.
Afternoon Temperature: 78°F
A mix of sun and cloud.
Evening Temperature: 70°F
Clear.
Sunday, July 26th, 2026
Overnight Temperature: 65°F
Clear.
Morning Temperature: 73°F
Sunny.
Afternoon Temperature: 86°F
Mostly sunny. Chance of a thunderstorm.
Evening Temperature: 77°F
A mix of cloudy and clear skies. Chance of a thunderstorm.





 

  [ Local Weather Report ]
Crystal Lake, IL 
 
Cary, IL 
 
Woodstock, IL 
 
Genoa City, WI 
 
Antioch, IL 
 
Twin Lakes, WI 
 
Silver Lake, WI 
 
Salem, WI 
 
Wheatland, WI 
 
Harvard, IL 

 
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

  Mchenry weather brought to you by WeatherCity Server: us-chi1   Rendered in 0.00250s  
Home   |   About WeatherCity