• Today

    Aug 21

    82°Lo 73°

    Showers and a heavier t-storm

    Fair at the beach or pool
    • UV
      4 - Moderate
    • Cloud
      Cover
      88%
    • Precip
      85%
    more
  • Fri

    Aug 22

    90°Lo 71°

    Partly sunny, a t-storm; hot

    Very Good at the beach or pool
    • UV
      6 - High
    • Cloud
      Cover
      54%
    • Precip
      62%
  • Sat

    Aug 23

    86°Lo 70°

    A p.m. t-storm possible

    Very Good at the beach or pool
    • UV
      6 - High
    • Cloud
      Cover
      63%
    • Precip
      30%
    more
  • Sun

    Aug 24

    91°Lo 71°

    Clouds and sun; hot, humid

    Very Good at the beach or pool
    • UV
      6 - High
    • Cloud
      Cover
      48%
    • Precip
      25%
    more
  • Mon

    Aug 25

    90°Lo 68°

    An afternoon thunderstorm

    Very Good at the beach or pool
    • UV
      6 - High
    • Cloud
      Cover
      34%
    • Precip
      53%
    more
Next Previous
Hi 90° RealFeel® 106° Precipitation 62%

Day

N

E

S

W

  • SW 5 mph
  • Gusts: 9 mph

Times of clouds and sun, hot and humid with a shower or thunderstorm

  • Max UV Index: 6 (High)
  • Thunderstorms: 60%
  • Precipitation: 0.41 in
  • Rain: 0.41 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 1.5 hrs
  • Hours of Rain: 1.5 hrs
Lo 71° RealFeel® 72° Precipitation 40%

Night

N

E

S

W

  • NNW 3 mph
  • Gusts: 5 mph

A shower or thunderstorm in spots early in the evening; otherwise, mostly cloudy, warm and humid

  • Max UV Index: N/A
  • Thunderstorms: 60%
  • Precipitation: 0.04 in
  • Rain: 0.04 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0.5 hrs
  • Hours of Rain: 0.5 hrs

Temperature History - Aug 22

more Historical Weather Data >
  Today Normal Record 8/22/2013
High 90° 79° N/A 73°
Low 71° 58° N/A 56°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:08 AM with 13:36 of sunlight, then sets at 7:44 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 3:30 AM with 14:23 of moolight, then sets at 5:53 PM

Top Story

Crystal Lake Weather Report

Chicago: Threat of Thunderstorms Lingers After Heavy Rains Flood Wrigley Field

August 21, 2014; 12:59 PM ET

While there may be a mix of sunshine and clouds over the area, Chicago is facing more rounds of thunderstorms over the next several days. more >

What's that Warning? Warnings at the Beach

Jul 25, 2012; 5:00 AM ET If you're headed to the beach, keep an eye out for any of these watches and warnings issued by the NWS.

Fri. Beach & Pool

Fri. UV Index

Fri. Wind Maps