Current Weather
5:37 AM
63°F
Partly cloudy
RealFeel® 64°
Pleasant
RealFeel®
64°
Wind
WSW 2 mph
Wind Gusts
5 mph
Humidity
93%
Indoor Humidity
77% (Slightly Humid)
Dew Point
60° F
Pressure
↔ 30.02 in
Cloud Cover
40%
Visibility
12 mi
Cloud Ceiling
40000 ft
Day
8/18
79°Hi
RealFeel®
85°
Very Warm
RealFeel Shade™
78°
Pleasant
Humid with sun and some clouds; a heavy thunderstorm late this afternoon
Max UV Index8.0 (Very High)
AccuLumen Brightness Index™8 (Bright)
WindWSW 9 mph
Wind Gusts18 mph
Probability of Precipitation92%
Probability of Thunderstorms55%
Precipitation0.60 in
Rain Amount0.60 in
Total Hours of Precipitation2
Total Hours of Rain2
Cloud Cover43%
Night
8/18
63°Lo
RealFeel®
59°
Cool
Clouds breaking with heavy t-storms; areas of fog will reduce visibility late; any downpour can cause temporary flooding on roadways and poor drainage areas
WindWNW 6 mph
Wind Gusts13 mph
Probability of Precipitation98%
Probability of Thunderstorms59%
Precipitation0.61 in
Rain Amount0.61 in
Total Hours of Precipitation4
Total Hours of Rain4
Cloud Cover70%
Sun & Moon
13 hrs 46 mins
Rise
6:04 AM
Set
7:50 PM
Waxing Crescent
Rise
12:46 PM
Set
10:24 PM
Temperature History
8/18High
Low
Forecast
79°
63°
Average
82°
63°
Last Year
88°
71°
Record
88°
2025
48°
2012
Current Weather Conditions in Crystal Lake
Crystal Lake, Illinois is currently Partly cloudy with a temperature of 63°. The current RealFeel® Temperature is 64° (Pleasant) based on observed conditions including 93% humidity, 40% cloud cover, a UV index of 0, and winds of 2 mph. In shade, the RealFeel Shade™ is 64°. AccuWeather's MinuteCast® provides minute-by-minute precipitation forecasts for Crystal Lake, powered by forecasting systems and proprietary technology developed by AccuWeather meteorologists since 1962.
