• Wed

    Sep 9

    71°Lo 51°

    Rather cloudy

    Poor for home energy
    • Avg
      RealFeel
      62°
    • Hi
      RealFeel
      76°
    • Wind
      Speed
      7 mph
    more
  • Thu

    Sep 10

    70°Lo 56°

    Mostly cloudy

    Poor for home energy
    • Avg
      RealFeel
      60°
    • Hi
      RealFeel
      70°
    • Wind
      Speed
      10 mph
    more
  • Fri

    Sep 11

    68°Lo 54°

    Thunderstorms possible

    Poor for home energy
    • Avg
      RealFeel
      60°
    • Hi
      RealFeel
      70°
    • Wind
      Speed
      7 mph
    more
  • Sat

    Sep 12

    74°Lo 48°

    A couple of showers possible

    Poor for home energy
    • Avg
      RealFeel
      57°
    • Hi
      RealFeel
      73°
    • Wind
      Speed
      12 mph
  • Sun

    Sep 13

    69°Lo 55°

    Rain and drizzle possible

    Poor for home energy
    • Avg
      RealFeel
      59°
    • Hi
      RealFeel
      67°
    • Wind
      Speed
      9 mph
    more
Next Previous
Hi 74° RealFeel® 73° Precipitation 30%

Day

N

E

S

W

  • WSW 15 mph
  • Gusts: 31 mph

Partly sunny with a couple of showers possible

  • Max UV Index: 5 (Moderate)
  • Thunderstorms: 29%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 48° RealFeel® 41° Precipitation 25%

Night

N

E

S

W

  • W 12 mph
  • Gusts: 31 mph

Mostly cloudy

  • Max UV Index: N/A
  • Thunderstorms: 24%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs

Temperature History - Sep 12

more Historical Weather Data >
  Today Normal Record 9/12/2014
High 74° 74° N/A 49°
Low 48° 51° N/A 36°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:30 AM with 12:39 of sunlight, then sets at 7:09 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 5:53 AM with 12:57 of moolight, then sets at 6:50 PM

Crystal Lake Weather Report

Chicago: Heat, Humidity to Build Through Week

August 30, 2015; 8:00 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.