• Today

    Feb 26

    17°Lo -7°

    Partly sunny; turning colder

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      0 - Low
  • Fri

    Feb 27

    13°Lo -4°

    Sunny, but frigid

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      0 - Low
    more
  • Sat

    Feb 28

    19°Lo 13°

    Mostly sunny and frigid

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      0 - Low
    more
  • Sun

    Mar 1

    27°Lo 10°

    Cold with periods of snow

    Low ragweed pollen levels
    • Precip
      65%
    • Wind
      Speed
      9 mph
    • Cloud
      Cover
      94%
    more
  • Mon

    Mar 2

    30°Lo 25°

    Mostly cloudy and cold

    Ragweed Pollen Weather
    • Precip
      20%
    • Wind
      Speed
      7 mph
    • Cloud
      Cover
      72%
    more
Next Previous
Next 8 hours >
  Thu
12am
1am 2am 3am 4am 5am 6am 7am
  12am 1am 2am 3am 4am 5am 6am 7am
Forecast
Cloudy
Cloudy
Cloudy
Cloudy
Cloudy
Cloudy
Snow
Cloudy
Temp (°F) 14° 13° 13° 12° 12° 10° 10° 12°
RealFeel® -1° -2° -3° -5° -5° -4°
Humidity 83% 84% 84% 84% 83% 86% 83% 77%
   
  12am 1am 2am 3am 4am 5am 6am 7am
Rain
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
34%
 
34%
 
34%
 
37%
 
43%
 
47%
 
51%
 
7%
Ice
 
15%
 
30%
 
30%
 
30%
 
30%
 
30%
 
20%
 
0%
   
  12am 1am 2am 3am 4am 5am 6am 7am
Wind (mph) 10 N 10 N 10 N 12 N 12 N 12 N 12 N 13 N
UV Index 0 0 0 0 0 0 0 0
Cloud Cover 97% 99% 99% 95% 97% 94% 90% 90%
Dew Point
Middle Grid line 15 F Middle Grid line 10 F Middle Grid line 5 F

Temperature History - Feb 26

more Historical Weather Data >
  Today Normal Record 2/26/2014
High 17° 35° N/A 13°
Low -7° 17° N/A -6°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:34 AM with 11:05 of sunlight, then sets at 5:39 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 11:37 AM with 14:48 of moolight, then sets at 2:25 AM

Crystal Lake Weather Report

Chicago: Snow Looms for Late Weekend as Cold Air Lingers

February 26, 2015; 4:10 PM ET

The Chicago area will continue to endure a cold air into late in the weekend as the next round of snow could hit the region on Sunday. more >

Making a Forecast: The Sixth Sense

Feb 16, 2015; 5:00 AM ET What steps go into making a forecast?

Thu. Pollen

Thu. Dust & Dander

Thu. Wind Maps