• Tonight

    Sep 22

    Lo 45°

    Clear and cool

    Bicycling Weather
    • Precip
      0%
    • Hours of Precip
      0
    • Wind
      Gust
      11 mph
    more
  • Tue

    Sep 23

    72°Lo 49°

    Mostly sunny and pleasant

    Excellent for biking
    • Precip
      4%
    • Hours of Precip
      0
    • Wind
      Gust
      6 mph
  • Wed

    Sep 24

    74°Lo 51°

    Mostly sunny and pleasant

    Excellent for biking
    • Precip
      11%
    • Hours of Precip
      0
    • Wind
      Gust
      10 mph
    more
  • Thu

    Sep 25

    74°Lo 51°

    Mostly sunny and pleasant

    Excellent for biking
    • Precip
      13%
    • Hours of Precip
      0
    • Wind
      Gust
      7 mph
    more
  • Fri

    Sep 26

    77°Lo 53°

    Sunny and pleasantly warm

    Excellent for biking
    • Precip
      12%
    • Hours of Precip
      0
    • Wind
      Gust
      7 mph
    more
Next Previous
Hi 72° RealFeel® 76° Precipitation 4%

Day

N

E

S

W

  • SE 4 mph
  • Gusts: 6 mph

Mostly sunny and pleasant

  • Max UV Index: 5 (Moderate)
  • 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 49° RealFeel® 46° Precipitation 7%

Night

N

E

S

W

  • SSE 4 mph
  • Gusts: 7 mph

Mainly 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 - Sep 23

more Historical Weather Data >
  Today Normal Record 9/23/2013
High 72° 70° N/A 65°
Low 49° 46° N/A 36°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:41 AM with 12:08 of sunlight, then sets at 6:49 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 6:06 AM with 12:21 of moolight, then sets at 6:27 PM

Top Story

Crystal Lake Weather Report

Drier Air Heads into Chicago Following Storms

September 22, 2014; 6:02 PM ET

Drier air will filter into the Chicago area for the rest of the week, resulting in dry skies and clear conditions to kick off the first week of fall. more >

Is Your Outdoor Gear Waterproof?

Dec 5, 2012; 5:00 AM ET Now that it's cold enough to hit the slopes, you may want to look more closely at what materials your winter sports gear is made of. As it turns out, not all waterproofing is created equal.