• Thu

    Sep 3

    86°Lo 64°

    Sunshine and very warm

    Poor for home energy
    • Avg
      RealFeel
      78°
    • Hi
      RealFeel
      91°
    • Wind
      Speed
      6 mph
    more
  • Fri

    Sep 4

    85°Lo 61°

    Sunny and very warm

    Poor for home energy
    • Avg
      RealFeel
      77°
    • Hi
      RealFeel
      92°
    • Wind
      Speed
      6 mph
  • Sat

    Sep 5

    83°Lo 64°

    Sunny and very warm

    Poor for home energy
    • Avg
      RealFeel
      72°
    • Hi
      RealFeel
      81°
    • Wind
      Speed
      12 mph
    more
  • Sun

    Sep 6

    80°Lo 60°

    Mostly sunny and warm

    Poor for home energy
    • Avg
      RealFeel
      70°
    • Hi
      RealFeel
      80°
    • Wind
      Speed
      10 mph
    more
  • Mon

    Sep 7

    76°Lo 64°

    Chance for a strong t-storm

    Poor for home energy
    • Avg
      RealFeel
      73°
    • Hi
      RealFeel
      84°
    • Wind
      Speed
      4 mph
    more
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Temperature History - Sep 4

more Historical Weather Data >
  Today Normal Record 9/4/2014
High 85° 77° N/A 80°
Low 61° 54° N/A 64°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:21 AM with 13:01 of sunlight, then sets at 7:22 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 11:28 PM with 14:42 of moolight, then sets at 2:10 PM

Crystal Lake Weather Report

Chicago: Heat, Humidity to Build Through Week

August 29, 2015; 1:26 PM ET

A turn to warmer conditions is in store for the Chicago area heading into the new 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.