• Fri

    Apr 17

    52°Lo 36°

    Mostly sunny

    Ragweed Pollen Weather
    • Precip
      20%
    • Wind
      Speed
      9 mph
    • Cloud
      Cover
      20%
    more
  • Sat

    Apr 18

    53°Lo 41°

    Abundant sunshine

    Ragweed Pollen Weather
    • Precip
      5%
    • Wind
      Speed
      8 mph
    • Cloud
      Cover
      1%
  • Sun

    Apr 19

    61°Lo 37°

    Warmer with occasional rain

    Ragweed Pollen Weather
    • Precip
      55%
    • Wind
      Speed
      7 mph
    • Cloud
      Cover
      66%
    more
  • Mon

    Apr 20

    53°Lo 35°

    Sunny

    Ragweed Pollen Weather
    • Precip
      5%
    • Wind
      Speed
      7 mph
    • Cloud
      Cover
      0%
    more
  • Tue

    Apr 21

    52°Lo 38°

    Sunny

    Ragweed Pollen Weather
    • Precip
      5%
    • Wind
      Speed
      5 mph
    • Cloud
      Cover
      0%
    more
Next Previous
Hi 53° RealFeel® 55° Precipitation 5%

Day

N

E

S

W

  • SSW 8 mph
  • Gusts: 20 mph

Abundant sunshine

  • 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 41° RealFeel® 35° Precipitation 10%

Night

N

E

S

W

  • SW 9 mph
  • Gusts: 17 mph

Clear

  • 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 4/18/2014
High 53° 58° N/A 56°
Low 41° 36° N/A 30°

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 6:09 AM with 13:37 of moolight, then sets at 7:46 PM

Crystal Lake Weather Report

Mild, Dry Conditions to Begin the New Week in Chicago

March 28, 2015; 4:47 AM ET

Milder weather will return to Chicago to kickoff the new week. more >

Making a Forecast: The Sixth Sense

Feb 16, 2015; 5:00 AM ET What steps go into making a forecast?