• Today

    Sep 2

    81°Lo 58°

    Periods of sun; less humid

    Beneficial weather for sinus headaches
    • Hi
      RealFeel
      83°
    • UV
      6 - High
    • Cloud
      Cover
      49%
    more
  • Wed

    Sep 3

    83°Lo 69°

    Partly sunny

    Beneficial weather for sinus headaches
    • Hi
      RealFeel
      86°
    • UV
      6 - High
    • Cloud
      Cover
      26%
  • Thu

    Sep 4

    89°Lo 70°

    Clouds and sun

    Beneficial weather for sinus headaches
    • Hi
      RealFeel
      96°
    • UV
      5 - Moderate
    • Cloud
      Cover
      50%
    more
  • Fri

    Sep 5

    76°Lo 55°

    Not as warm with t-storms

    Beneficial weather for sinus headaches
    • Hi
      RealFeel
      76°
    • UV
      5 - Moderate
    • Cloud
      Cover
      76%
    more
  • Sat

    Sep 6

    72°Lo 51°

    Mostly sunny and nice

    Beneficial weather for sinus headaches
    • Hi
      RealFeel
      75°
    • UV
      6 - High
    • Cloud
      Cover
      21%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Wed
1am
2am 3am 4am 5am 6am 7am 8am
  1am 2am 3am 4am 5am 6am 7am 8am
Forecast
Clear
Clear
Clear
Clear
Clear
Clear
Sunny
Mostly Sunny
Temp (°F) 63° 61° 60° 59° 58° 59° 60° 64°
RealFeel® 62° 61° 59° 58° 57° 58° 60° 65°
Humidity 87% 89% 90% 93% 93% 93% 93% 87%
   
  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) 2 WNW 2 WNW 2 WNW 1 WNW 1 WNW 1 W 1 SW 3 S
UV Index 0 0 0 0 0 0 0 1
Cloud Cover 1% 1% 0% 0% 0% 0% 0% 26%
Dew Point 59° 58° 57° 57° 56° 57° 58° 60°
Middle Grid line 65 F Middle Grid line 60 F Middle Grid line 55 F

Temperature History - Sep 3

more Historical Weather Data >
  Today Normal Record 9/3/2013
High 83° 77° N/A 73°
Low 69° 54° N/A 44°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:20 AM with 13:04 of sunlight, then sets at 7:24 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 3:09 PM with 10:00 of moolight, then sets at 1:09 AM

Top Story

Crystal Lake Weather Report

Chicago: Cooler, Less Humid Air to Return by Late Week

September 2, 2014; 4:05 AM ET

While Labor Day marks an unofficial end to the summer, the Chicago area will see warm, humid conditions continue before temperatures slide late in the week. more >

New Year, New You

Dec 24, 2012; 5:00 AM ET Start 2013 right with these tips on how to set realistic New Year's resolutions!

Wed. Sinus Headache

Wed. UV Index