• Today

    Aug 4

    81°Lo 58°

    Mostly sunny and delightful

    Beneficial weather for asthma
    • Hi
      RealFeel
      84°
    • UV
      5 - High
    • Air Qual.
      Good
  • Wed

    Aug 5

    83°Lo 63°

    Increasing clouds

    Beneficial weather for asthma
    • Hi
      RealFeel
      89°
    • UV
      5 - High
    • Air Qual.
      Good
    more
  • Thu

    Aug 6

    81°Lo 64°

    Mostly cloudy

    Neutral weather for asthma
    • Hi
      RealFeel
      85°
    • UV
      5 - High
    • Air Qual.
      Good
    more
  • Fri

    Aug 7

    80°Lo 64°

    Periods of sun with a t-storm

    Beneficial weather for asthma
    • Hi
      RealFeel
      86°
    • UV
      4 - Moderate
    • Air Qual.
      Good
    more
  • Sat

    Aug 8

    85°Lo 65°

    Partly sunny

    Beneficial weather for asthma
    • Hi
      RealFeel
      89°
    • UV
      5 - High
    • Air Qual.
      Good
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Tue
1am
2am 3am 4am 5am 6am 7am 8am
  1am 2am 3am 4am 5am 6am 7am 8am
Forecast
Mostly Clear
Partly Cloudy
Cloudy
Partly Cloudy
Mostly Clear
Mostly Sunny
Mostly Sunny
Sunny
Temp (°F) 62° 60° 59° 58° 56° 59° 60° 64°
RealFeel® 62° 60° 59° 58° 57° 59° 60° 65°
Humidity 73% 70% 72% 75% 77% 82% 79% 71%
   
  1am 2am 3am 4am 5am 6am 7am 8am
Rain
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  1am 2am 3am 4am 5am 6am 7am 8am
Wind (mph) 5 WSW 4 NNW 4 WNW 4 WNW 4 WNW 5 WNW 5 WNW 6 WNW
UV Index 0 0 0 0 0 0 0 1
Cloud Cover 14% 42% 71% 31% 11% 11% 11% 0%
Dew Point 53° 51° 50° 50° 49° 53° 53° 54°
Middle Grid line 65 F Middle Grid line 60 F Middle Grid line 55 F

Temperature History - Aug 4

more Historical Weather Data >
  Today Normal Record 8/4/2014
High 81° 80° N/A 81°
Low 58° 60° N/A 57°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:49 AM with 14:20 of sunlight, then sets at 8:09 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 10:45 PM with 13:16 of moolight, then sets at 12:01 PM

Crystal Lake Weather Report

Chicago: Cooler Conditions to Last Through Week

August 4, 2015; 4:40 AM ET

The Chicagoland area will experience cooler weather throughout the week. more >

The Dangers of Bus Travel

Dec 10, 2012; 5:00 AM ET While bus transportation is one of the most affordable, it is important to know which motor coach companies rank highest in safety.

Tue. Air Quality

Tue. Asthma Risk

Tue. UV Index