• Today

    Jul 30

    76°Lo 55°

    A thunderstorm in spots

    Poor for home energy
    • Avg
      RealFeel
      67°
    • Hi
      RealFeel
      80°
    • Wind
      Speed
      6 mph
    more
  • Thu

    Jul 31

    81°Lo 60°

    Thunderstorm

    Poor for home energy
    • Avg
      RealFeel
      72°
    • Hi
      RealFeel
      84°
    • Wind
      Speed
      7 mph
  • Fri

    Aug 1

    80°Lo 58°

    Clouds and sun with a t-storm

    Poor for home energy
    • Avg
      RealFeel
      71°
    • Hi
      RealFeel
      85°
    • Wind
      Speed
      3 mph
    more
  • Sat

    Aug 2

    80°Lo 55°

    Partly sunny with a t-storm

    Poor for home energy
    • Avg
      RealFeel
      70°
    • Hi
      RealFeel
      85°
    • Wind
      Speed
      5 mph
    more
  • Sun

    Aug 3

    82°Lo 58°

    Partly sunny and pleasant

    Poor for home energy
    • Avg
      RealFeel
      72°
    • Hi
      RealFeel
      88°
    • Wind
      Speed
      4 mph
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Thu
5pm
6pm 7pm 8pm 9pm 10pm 11pm Fri
12am
  5pm 6pm 7pm 8pm 9pm 10pm 11pm 12am
Forecast
Partly Sunny
Partly Cloudy
Partly Sunny
Mostly Sunny
T-storms
Mostly Clear
Mostly Clear
Mostly Clear
Temp (°F) 79° 79° 76° 73° 71° 68° 65° 65°
RealFeel® 79° 77° 72° 69° 66° 65° 62° 64°
Humidity 58% 57% 59% 64% 71% 77% 82% 85%
   
  5pm 6pm 7pm 8pm 9pm 10pm 11pm 12am
Rain
 
32%
 
32%
 
36%
 
47%
 
51%
 
47%
 
28%
 
28%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  5pm 6pm 7pm 8pm 9pm 10pm 11pm 12am
Wind (mph) 7 WSW 6 WSW 5 WSW 5 WSW 4 SW 3 SW 3 SW 3 SW
UV Index 3 1 0 0 0 0 0 0
Cloud Cover 46% 70% 46% 11% 25% 11% 11% 25%
Dew Point 63° 62° 61° 60° 61° 61° 60° 60°
Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F Middle Grid line 60 F

Temperature History - Jul 31

more Historical Weather Data >
  Today Normal Record 7/31/2013
High 81° 81° N/A 74°
Low 60° 60° N/A 56°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:45 AM with 14:29 of sunlight, then sets at 8:14 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 10:18 AM with 12:01 of moolight, then sets at 10:19 PM

Top Story

Crystal Lake Weather Report

Late-Week Thunderstorms in Store for Chicago

July 30, 2014; 6:08 AM ET

Thunderstorms will move into the Chicago area later this week, and the threat for storms will remain into the weekend. more >

Energy Efficient Lightbulbs and S.A.D

Sep 8, 2012; 5:00 AM ET With shorter days and colder nights in the fall and winter, some people develop seasonal affective disorder. When shopping for lightbulbs to treat the 'winter blues,'consider energy-efficient bulbs.

Thu. Home Energy Efficiency

Thu. Degree Days

Thu. UV Index