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Crystal Lake, IL

85°F
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Crystal Lake

Illinois

85°
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Crystal Lake, IL Weather
Today WinterCast Local {stormName} Tracker Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities

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Winter Center

Today Hourly 10-Day Radar MinuteCast® Monthly Air Quality Health & Activities
Thursday, July 30

Current Weather

3:53 PM

85°F
Mostly sunny
RealFeel® 91°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
RealFeel Shade™ 84°
Very Warm
RealFeel Guide
Very Warm
82° to 89°
Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.
LEARN MORE
RealFeel®
91°
RealFeel Shade™
84°
Heat Index
85°
Max UV Index
4.4 (Moderate)
Wind
SW 3 mph
Wind Gusts
5 mph
Humidity
43%
Indoor Humidity
43% (Slightly Humid)
Dew Point
60° F
Pressure
↓ 30.06 in
Cloud Cover
21%
Visibility
11 mi
Cloud Ceiling
40000 ft

Day

7/30
85°Hi
RealFeel® 94°
Hot
RealFeel Guide
Hot
90° to 100°
Caution advised. Possible danger of dehydration, heat stroke, heat exhaustion and heat cramps if outside for extended periods, and especially while doing strenuous activities.
LEARN MORE
RealFeel Shade™ 84°
Very Warm
RealFeel Guide
Very Warm
82° to 89°
Older adults, infants, and those with sensitive medical conditions should minimize outdoor activity, especially in the sunshine.
LEARN MORE
Hazy sun

Max UV Index9.0 (Very High)

AccuLumen Brightness Index™9 (Very Bright)

WindSW 5 mph

Wind Gusts12 mph

Probability of Precipitation1%

Probability of Thunderstorms0%

Precipitation0.00 in

Cloud Cover10%

Morning

Afternoon

Night

7/30
64°Lo
RealFeel® 64°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
Partly cloudy

WindSSW 5 mph

Wind Gusts6 mph

Probability of Precipitation2%

Probability of Thunderstorms0%

Precipitation0.00 in

Cloud Cover26%

Evening

Overnight

Sun & Moon

14 hrs 31 mins
Rise 5:44 AM
Set 8:15 PM
Waning Gibbous
Rise 8:59 PM
Set 7:43 AM

Temperature History

7/30
High
Low
Forecast
85°
64°
Average
83°
64°
Last Year
80°
69°
Record
98°
1999
49°
1997

Current Weather Conditions in Crystal Lake

Crystal Lake, Illinois is currently Mostly sunny with a temperature of 85°. The current RealFeel® Temperature is 91° (Hot) based on observed conditions including 43% humidity, 21% cloud cover, a UV index of 4, and winds of 3 mph. In shade, the RealFeel Shade™ is 84°. 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.

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