• Early AM

    Jul 28

    Lo 63°

    Partly cloudy

    Home Energy Efficiency Weather
    • Avg
      RealFeel
      77°
    • Hi
      RealFeel
      91°
    • Wind
      Speed
      5 mph
    more
  • Today

    Jul 28

    88°Lo 73°

    Partly sunny, warm and humid

    Poor for home energy
    • Avg
      RealFeel
      84°
    • Hi
      RealFeel
      93°
    • Wind
      Speed
      8 mph
    more
  • Wed

    Jul 29

    83°Lo 62°

    A morning t-storm in spots

    Poor for home energy
    • Avg
      RealFeel
      73°
    • Hi
      RealFeel
      87°
    • Wind
      Speed
      15 mph
    more
  • Thu

    Jul 30

    85°Lo 64°

    Sunny and comfortable

    Poor for home energy
    • Avg
      RealFeel
      75°
    • Hi
      RealFeel
      88°
    • Wind
      Speed
      12 mph
    more
  • Fri

    Jul 31

    87°Lo 64°

    Mostly sunny and warm

    Poor for home energy
    • Avg
      RealFeel
      79°
    • Hi
      RealFeel
      95°
    • Wind
      Speed
      10 mph
Next Previous
Mostly sunny 87° Lo 80° RealFeel® 95° / 82°

N

E

S

W

  • Precipitation: 17%
  • Rain: 0 in
  • Snow: 0 in
  • Humidity: 64%
  • Cloud Cover: 0%
  • Dew Point: 71° F
  • Visibility: 10 mi
12 mph

Temperature History - Jul 31

more Historical Weather Data >
  Today Normal Record 7/31/2014
High 87° 81° N/A 80°
Low 64° 60° N/A 50°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:45 AM with 14:29 of sunlight, then sets at 8:14 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 8:15 PM with 10:58 of moolight, then sets at 7:13 AM

Crystal Lake Weather Report

Chicago: Heat and Humidity to Build Through Midweek

July 28, 2015; 12:25 AM ET

While cooler than average temperatures start off the work-week in Chicagoland, it will not last long as the heat and humidity will begin to build back in through the middle of the week. more >

Energy Efficient Lightbulbs and S.A.D

Sep 8, 2012; 5:00 AM ET With shorter days and colder nights in the fall and winter, some people develop seasonal affective disorder. When shopping for lightbulbs to treat the 'winter blues,'consider energy-efficient bulbs.

Fri. Home Energy Efficiency

Fri. Degree Days

Fri. UV Index