• Today

    Dec 21

    38°Lo 29°

    Mostly cloudy with a flurry

    Good for home energy
    • Avg
      RealFeel
      23°
    • Hi
      RealFeel
      28°
    • Wind
      Speed
      12 mph
    more
  • Mon

    Dec 22

    42°Lo 38°

    A morning shower, then rain

    Good for home energy
    • Avg
      RealFeel
      27°
    • Hi
      RealFeel
      27°
    • Wind
      Speed
      16 mph
    more
  • Tue

    Dec 23

    46°Lo 31°

    Cloudy with a shower

    Fair for home energy
    • Avg
      RealFeel
      33°
    • Hi
      RealFeel
      43°
    • Wind
      Speed
      7 mph
    more
  • Wed

    Dec 24

    39°Lo 27°

    Snow showers; windy, colder

    Good for home energy
    • Avg
      RealFeel
      16°
    • Hi
      RealFeel
      25°
    • Wind
      Speed
      16 mph
  • Thu

    Dec 25

    37°Lo 28°

    Mostly sunny and breezy

    Very Good for home energy
    • Avg
      RealFeel
      22°
    • Hi
      RealFeel
      24°
    • Wind
      Speed
      18 mph
    more
Next Previous
Hi 39° RealFeel® 25° Precipitation 61%

Day

N

E

S

W

  • NW 16 mph
  • Gusts: 34 mph

Mostly cloudy, windy and colder with a couple of snow showers

  • Max UV Index: 1 (Low)
  • Thunderstorms: 1%
  • Precipitation: 0.04 in
  • Rain: 0 in
  • Snow: 0.3 in
  • Ice: 0 in
  • Hours of Precipitation: 1.5 hrs
  • Hours of Rain: 0 hrs
Lo 27° RealFeel® 7° Precipitation 14%

Night

N

E

S

W

  • W 20 mph
  • Gusts: 30 mph

Mostly cloudy and breezy

  • Max UV Index: N/A
  • Thunderstorms: 1%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs

Temperature History - Dec 24

more Historical Weather Data >
  Today Normal Record 12/24/2013
High 39° 29° N/A 12°
Low 27° 13° N/A -10°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 7:20 AM with 9:06 of sunlight, then sets at 4:26 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 9:08 AM with 10:45 of moolight, then sets at 7:53 PM

Crystal Lake Weather Report

Chicago: Chance for a White Christmas as Pattern Turns Unsettled

December 21, 2014; 4:18 AM ET

There's a chance for a white Christmas around Chicagoland as next week turns unsettled. 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.

Wed. Home Energy Efficiency

Wed. Degree Days

Wed. UV Index