• Tue

    Aug 11

    78°Lo 64°

    Partly sunny

    Advisory for hair frizz
    • Wind
      Gust
      24 mph
    • Precip
      25%
    • Hours of Precip
      5
    more
  • Wed

    Aug 12

    76°Lo 64°

    Times of clouds and sun

    Watch for hair frizz
    • Wind
      Gust
      22 mph
    • Precip
      0%
    • Hours of Precip
      0
    more
  • Thu

    Aug 13

    85°Lo 63°

    A t-storm possible; warmer

    Watch for hair frizz
    • Wind
      Gust
      7 mph
    • Precip
      30%
    • Hours of Precip
      1
  • Fri

    Aug 14

    85°Lo 67°

    Mostly cloudy and warm

    Advisory for hair frizz
    • Wind
      Gust
      15 mph
    • Precip
      25%
    • Hours of Precip
      0
    more
  • Sat

    Aug 15

    72°Lo 61°

    Colder with a few showers

    Unlikely for hair frizz
    • Wind
      Gust
      13 mph
    • Precip
      61%
    • Hours of Precip
      2
    more
Next Previous
Hi 85° RealFeel® 90° Precipitation 30%

Day

N

E

S

W

  • SW 1 mph
  • Gusts: 7 mph

Partly sunny and warmer with a shower or thunderstorm possible

  • Max UV Index: 6 (High)
  • Thunderstorms: 35%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 63° RealFeel® 60° Precipitation 56%

Night

N

E

S

W

  • S 5 mph
  • Gusts: 12 mph

Mostly cloudy with a shower

  • Max UV Index: N/A
  • Thunderstorms: 20%
  • Precipitation: 0.06 in
  • Rain: 0.06 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 1 hrs
  • Hours of Rain: 1 hrs

Temperature History - Aug 13

more Historical Weather Data >
  Today Normal Record 8/13/2014
High 85° 80° N/A 78°
Low 63° 59° N/A 49°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:58 AM with 13:59 of sunlight, then sets at 7:57 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 5:06 AM with 14:08 of moolight, then sets at 7:14 PM

Crystal Lake Weather Report

Chicago: Unsettled Weather to Make Early-Week Return

August 1, 2015; 4:38 AM ET

Temperatures will stay in the 80s, with the daytime high slowly working its way into the low 80s by Monday. 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.