• Today

    Dec 20

    34°Lo 27°

    Mostly cloudy

    Watch for hair frizz
    • Wind
      Gust
      5 mph
    • Precip
      7%
    • Hours of Precip
      0.5
  • Sun

    Dec 21

    39°Lo 31°

    Mostly cloudy with a flurry

    Watch for hair frizz
    • Wind
      Gust
      17 mph
    • Precip
      43%
    • Hours of Precip
      1
    more
  • Mon

    Dec 22

    43°Lo 37°

    Mostly cloudy, afternoon rain

    Advisory for hair frizz
    • Wind
      Gust
      21 mph
    • Precip
      75%
    • Hours of Precip
      5
    more
  • Tue

    Dec 23

    43°Lo 31°

    Cloudy with a few showers

    Advisory for hair frizz
    • Wind
      Gust
      14 mph
    • Precip
      61%
    • Hours of Precip
      3.5
    more
  • Wed

    Dec 24

    37°Lo 25°

    Very windy; snow showers

    Advisory for hair frizz
    • Wind
      Gust
      54 mph
    • Precip
      80%
    • Hours of Precip
      7
    more
Next Previous
Hi 34° RealFeel® 34° Precipitation 7%

Day

N

E

S

W

  • S 4 mph
  • Gusts: 5 mph

Mostly cloudy

  • Max UV Index: 1 (Low)
  • Thunderstorms: 0%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 27° RealFeel® 26° Precipitation 41%

Night

N

E

S

W

  • SSW 5 mph
  • Gusts: 8 mph

Overcast with a flurry late; watch for some freezing drizzle as well

  • Max UV Index: N/A
  • Thunderstorms: 0%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0.0 in
  • Ice: 0 in
  • Hours of Precipitation: 0.5 hrs
  • Hours of Rain: 0 hrs

Temperature History - Dec 20

more Historical Weather Data >
  Today Normal Record 12/20/2013
High 34° 33° N/A 34°
Low 27° 19° N/A 30°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 7:17 AM with 9:05 of sunlight, then sets at 4:22 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 5:32 AM with 10:03 of moolight, then sets at 3:35 PM

Grayslake Weather Report

Chicago: Chance for a White Christmas as Pattern Turns Unsettled

December 20, 2014; 4:16 AM ET

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

The History Behind the UV Index

Nov 12, 2012; 5:00 AM ET The UV index has been around since the early 1990s. It was created to help you plan outdoor activities in hopes to limit overexposure to the sun. Jeannette Calle has more.

Sat. Hair Frizz

Sat. Wind Maps

Sat. UV Index