• Early AM

    Aug 4

    Lo 56°

    Mainly clear

    Home Energy Efficiency Weather
    • Avg
      RealFeel
      69°
    • Hi
      RealFeel
      82°
    • Wind
      Speed
      5 mph
  • Today

    Aug 4

    81°Lo 59°

    Mostly sunny and delightful

    Poor for home energy
    • Avg
      RealFeel
      72°
    • Hi
      RealFeel
      84°
    • Wind
      Speed
      4 mph
    more
  • Wed

    Aug 5

    81°Lo 63°

    Mostly cloudy

    Poor for home energy
    • Avg
      RealFeel
      74°
    • Hi
      RealFeel
      86°
    • Wind
      Speed
      7 mph
    more
  • Thu

    Aug 6

    79°Lo 64°

    Rather cloudy

    Poor for home energy
    • Avg
      RealFeel
      75°
    • Hi
      RealFeel
      86°
    • Wind
      Speed
      6 mph
    more
  • Fri

    Aug 7

    77°Lo 61°

    Clouds and sun with a t-storm

    Poor for home energy
    • Avg
      RealFeel
      72°
    • Hi
      RealFeel
      82°
    • Wind
      Speed
      5 mph
    more
Next Previous
Mainly clear 56° RealFeel® 56°

N

E

S

W

  • Humidity: 76%
  • Cloud Cover: 9%
  • Dew Point: 51° F
  • Rain: 0 in
  • Snow: 0 in
  • Visibility: 10 mi
5 mph

Crystal Lake Weather Report

Chicago: Cooler Conditions to Last Through Week

August 4, 2015; 1:40 AM ET

The Chicagoland area will experience cooler weather throughout 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.

Tue. Home Energy Efficiency

Tue. Degree Days

Tue. UV Index