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Crystal Lake, IL

88°F
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Crystal Lake

Illinois

88°
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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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4 PM

87°
RealFeel® 93°
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
rain drop 0%
Chevron down
Partly sunny

RealFeel Shade™88°

Heat Index91°

WindSW 8 mph

Air QualityPoor

Max UV Index4.8 (Moderate)

Wind Gusts13 mph

Humidity54%

Indoor Humidity54% (Very Humid)

Dew Point69° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

5 PM

86°
RealFeel® 90°
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
rain drop 0%
Chevron down
Partly sunny

RealFeel Shade™86°

Heat Index89°

WindSW 8 mph

Air QualityPoor

Max UV Index3.4 (Moderate)

Wind Gusts14 mph

Humidity56%

Indoor Humidity56% (Very Humid)

Dew Point68° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

6 PM

84°
RealFeel® 89°
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
rain drop 0%
Chevron down
Partly sunny

RealFeel Shade™86°

Heat Index88°

WindSW 8 mph

Air QualityPoor

Max UV Index2.2 (Low)

Wind Gusts15 mph

Humidity59%

Indoor Humidity59% (Very Humid)

Dew Point69° F

AccuLumen Brightness Index™8 (Bright)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

7 PM

83°
RealFeel® 86°
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
rain drop 0%
Chevron down
Partly sunny

RealFeel Shade™85°

Heat Index86°

WindSW 8 mph

Air QualityPoor

Max UV Index1.3 (Low)

Wind Gusts15 mph

Humidity63%

Indoor Humidity63% (Very Humid)

Dew Point69° F

AccuLumen Brightness Index™7 (Bright)

Cloud Cover46%

Visibility10 mi

Cloud Ceiling30000 ft

8 PM

79°
RealFeel® 81°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly sunny

RealFeel Shade™81°

Heat Index80°

WindSW 7 mph

Air QualityFair

Max UV Index0.4 (Low)

Wind Gusts13 mph

Humidity70%

Indoor Humidity70% (Very Humid)

Dew Point69° F

AccuLumen Brightness Index™2 (Dark)

Cloud Cover13%

Visibility10 mi

Cloud Ceiling30000 ft

9 PM

76°
RealFeel® 78°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindSW 6 mph

Air QualityFair

Wind Gusts10 mph

Humidity78%

Indoor Humidity78% (Very Humid)

Dew Point69° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover20%

Visibility10 mi

Cloud Ceiling30000 ft

10 PM

73°
RealFeel® 75°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindSW 6 mph

Air QualityFair

Wind Gusts7 mph

Humidity85%

Indoor Humidity85% (Very Humid)

Dew Point69° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover25%

Visibility10 mi

Cloud Ceiling30000 ft

11 PM

71°
RealFeel® 72°
Pleasant
RealFeel Guide
Pleasant
63° to 81°
Most consider this temperature range ideal.
LEARN MORE
rain drop 0%
Chevron down
Mostly clear

WindSW 6 mph

Air QualityFair

Wind Gusts6 mph

Humidity91%

Indoor Humidity91% (Very Humid)

Dew Point68° F

AccuLumen Brightness Index™0 (Dark)

Cloud Cover24%

Visibility10 mi

Cloud Ceiling30000 ft

Hourly Weather Forecast for Crystal Lake

AccuWeather's hourly forecast for Crystal Lake provides hour-by-hour temperatures, RealFeel® Temperature, and precipitation probability through the next 10 days. The current hour shows 87° with a RealFeel® of 93°, partly sunny with a 0% chance of precipitation. Each hourly forecast includes wind speed, humidity, air quality, UV index, and the AccuLumen Brightness Index™, AccuWeather's measure of perceived outdoor light intensity. Forecasts are generated by proprietary systems developed by AccuWeather meteorologists since 1962.

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Weather Near Crystal Lake:

  • Chicago, IL
  • Joliet, IL
  • Naperville, IL
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