Forecast for Crystal Lake, IL | Forecast Periods: 14
Monday
Mar 16
2026
Crystal Lake, IL
Updated: 9:01 PM CDT
8°F
Patchy Blowing Snow
10 mph NW
Precipitation: 30%
Patchy blowing snow and scattered snow showers before 2am. Mostly cloudy. Low around 8, with temperatures rising to around 10 overnight. Wind chill values as low as -4. Northwest wind 10 to 20 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New snow accumulation of less than half an inch possible.
Hourly Forecast
Extended Forecast
Tuesday
Tue, Mar 17
23°F
Mostly Sunny
5 mph W
Precipitation: 0%
Mostly sunny, with a high near 23. Wind chill values as low as -5. West wind 5 to 10 mph, with gusts as high as 20 mph.
Tuesday Night
Tue, Mar 17
18°F
Snow
5 mph SSW
Precipitation: 88%
Snow after 7pm. Cloudy. Low around 18, with temperatures rising to around 22 overnight. South southwest wind 5 to 15 mph. Chance of precipitation is 90%. New snow accumulation of around one inch possible.
Wednesday
Wed, Mar 18
40°F
Snow then Mostly Cloudy
5 mph SSW
Precipitation: 85%
Snow before 7am. Mostly cloudy, with a high near 40. South southwest wind 5 to 15 mph. Chance of precipitation is 90%. New snow accumulation of less than half an inch possible.
Wednesday Night
Wed, Mar 18
31°F
Mostly Cloudy
5 mph SW
Precipitation: 12%
Mostly cloudy, with a low around 31. Southwest wind around 5 mph, with gusts as high as 15 mph.
Thursday
Thu, Mar 19
48°F
Partly Sunny
5 mph W
Precipitation: 12%
Partly sunny, with a high near 48.
Thursday Night
Thu, Mar 19
34°F
Mostly Cloudy
5 mph NNW
Precipitation: 1%
Mostly cloudy, with a low around 34.
Friday
Fri, Mar 20
56°F
Mostly Cloudy
5 mph WSW
Precipitation: 1%
Mostly cloudy, with a high near 56.
Friday Night
Fri, Mar 20
38°F
Mostly Cloudy
10 mph WSW
Precipitation: 4%
Mostly cloudy, with a low around 38.
Saturday
Sat, Mar 21
59°F
Partly Sunny
10 mph W
Precipitation: 4%
Partly sunny, with a high near 59.
Saturday Night
Sat, Mar 21
36°F
Partly Cloudy
10 mph NW
Precipitation: 8%
Partly cloudy, with a low around 36.
Sunday
Sun, Mar 22
53°F
Partly Sunny
10 mph NNW
Precipitation: 8%
Partly sunny, with a high near 53.
Sunday Night
Sun, Mar 22
27°F
Mostly Cloudy
10 mph N
Precipitation: 3%
Mostly cloudy, with a low around 27.
Monday
Mon, Mar 23
42°F
Partly Sunny
10 mph NNE
Precipitation: 3%
Partly sunny, with a high near 42.