• Today

    Apr 18

    56°Lo 34°

    Mostly sunny

    Beneficial weather for colds
    • Avg
      Temp
      45°
    • Avg
      RealFeel
      47°
    • Hi
      RealFeel
      58°
  • Sat

    Apr 19

    66°Lo 43°

    Mostly sunny and breezy

    Beneficial weather for colds
    • Avg
      Temp
      54°
    • Avg
      RealFeel
      51°
    • Hi
      RealFeel
      65°
    more
  • Sun

    Apr 20

    72°Lo 51°

    Partly sunny

    Beneficial weather for colds
    • Avg
      Temp
      62°
    • Avg
      RealFeel
      59°
    • Hi
      RealFeel
      73°
    more
  • Mon

    Apr 21

    68°Lo 46°

    Mostly cloudy with showers

    Neutral weather for colds
    • Avg
      Temp
      57°
    • Avg
      RealFeel
      57°
    • Hi
      RealFeel
      65°
    more
  • Tue

    Apr 22

    62°Lo 35°

    Chance of a morning shower

    Beneficial weather for colds
    • Avg
      Temp
      48°
    • Avg
      RealFeel
      49°
    • Hi
      RealFeel
      60°
    more
Next Previous
Hi 56° RealFeel® 58° Precipitation 0%

Day

N

E

S

W

  • NNE 8 mph
  • Gusts: 15 mph

Mostly sunny

  • Max UV Index: 7 (High)
  • 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 34° RealFeel® 29° Precipitation 1%

Night

N

E

S

W

  • NE 6 mph
  • Gusts: 14 mph

Clear to partly cloudy

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

Temperature History - Apr 18

more Historical Weather Data >
  Today Normal Record 4/18/2013
High 56° 58° N/A 61°
Low 34° 36° N/A 36°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:08 AM with 13:30 of sunlight, then sets at 7:38 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 11:26 PM with 9:56 of moolight, then sets at 9:22 AM

Top Story

Crystal Lake Weather Report

Chicago: Weekend Warmth on the Way

April 18, 2014; 4:14 AM ET

Despite a chilly Friday, seasonal warmth will return to the city right in time for the holiday weekend. more >

Is it a Cold or the Flu?

Apr 7, 2014; 5:00 AM ET Symptoms caused by the common cold can often resemble those associated with the influenza virus, so how do you differentiate between the two?

Fri. Cold & Flu

Fri. UV Index