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October 18th, 2025 :: 4:50 am CDT   

Local Weather Report for
Crystal Lake
Illinois, United States

 Crystal Lake Weather Forecast Summary  
 
Today
Oct 18th
Sunday
Oct 19th
Monday
Oct 20th
Tuesday
Oct 21st
Wednesday
Oct 22nd
Showers Showers Mostly Sunny Cloudy Cloudy
74°F
60°F
50°F
67°F
48°F
55°F
45°F
55°F
45°F
 
 Crystal Lake Detailed Weather Forecast  
 
Saturday, October 18th, 2025
Morning Temperature: 71°F
Cloudy. Slight chance of a thunderstorm. Windy at times.
Afternoon Temperature: 68°F
Cloudy with a chance of showers. Slight chance of a thunderstorm.
Evening Temperature: 63°F
Cloudy with showers likely. Slight chance of a thunderstorm.
Sunday, October 19th, 2025
Overnight Temperature: 54°F
Cloudy with a few showers. Windy at times.
Morning Temperature: 54°F
Cloudy with a chance of showers. Windy at times.
Afternoon Temperature: 58°F
Sunny. Windy at times.
Evening Temperature: 51°F
Clear.
Monday, October 20th, 2025
Overnight Temperature: 48°F
Clear.
Morning Temperature: 60°F
Sunny. Windy at times.
Afternoon Temperature: 64°F
Sunny. Windy at times.
Evening Temperature: 60°F
Clear with cloudy periods. Windy at times.
Tuesday, October 21st, 2025
Overnight Temperature: 53°F
Clear. Windy at times.
Morning Temperature: 54°F
Cloudy. Windy at times.
Afternoon Temperature: 50°F
Cloudy with a chance of showers. Windy at times.
Evening Temperature: 46°F
Cloudy. Windy at times.
Wednesday, October 22nd, 2025
Overnight Temperature: 45°F
Cloudy. Windy at times.
Morning Temperature: 50°F
Cloudy. Windy at times.
Afternoon Temperature: 53°F
Sunny. Windy at times.
Evening Temperature: 47°F
Clear.
Thursday, October 23rd, 2025
Overnight Temperature: 43°F
Clear.
Morning Temperature: 53°F
Sunny. Windy at times.
Afternoon Temperature: 57°F
Sunny.
Evening Temperature: 51°F
Cloudy.
Friday, October 24th, 2025
Overnight Temperature: 49°F
Cloudy.
Morning Temperature: 55°F
Cloudy.
Afternoon Temperature: 58°F
Cloudy.
Evening Temperature: 55°F
Cloudy.
Saturday, October 25th, 2025
Overnight Temperature: 54°F
Cloudy.
Morning Temperature: 59°F
A mix of cloud and sun.
Afternoon Temperature: 59°F
Sunny with cloudy periods.
Evening Temperature: 54°F
Clear.
Sunday, October 26th, 2025
Overnight Temperature: 51°F
Clear.
Morning Temperature: 60°F
Sunny.
Afternoon Temperature: 60°F
A mix of cloud and sun.
Evening Temperature: 55°F
A mix of cloudy and clear skies.





 

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This WeatherCity Weather Forecast for Crystal Lake, 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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