• Tonight

    Apr 20

    Lo 34°

    Partly cloudy and breezy

    Ragweed Pollen Weather
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      350 - High
  • Tue

    Apr 21

    49°Lo 29°

    Very windy; variable clouds

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      350 - High
    more
  • Wed

    Apr 22

    49°Lo 27°

    Windy with variable clouds

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      350 - High
    more
  • Thu

    Apr 23

    50°Lo 28°

    Sunny and breezy

    Low ragweed pollen levels
    • Precip
      6%
    • Wind
      Speed
      15 mph
    • Cloud
      Cover
      0%
    more
  • Fri

    Apr 24

    54°Lo 31°

    Cloudy and cool

    Ragweed Pollen Weather
    • Precip
      25%
    • Wind
      Speed
      9 mph
    • Cloud
      Cover
      97%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Mon
7pm
8pm 9pm 10pm 11pm Tue
12am
1am 2am
  7pm 8pm 9pm 10pm 11pm 12am 1am 2am
Forecast
Cloudy
Cloudy
Cloudy
Cloudy
Cloudy
Partly Cloudy
Mostly Clear
Clear
Temp (°F) 45° 43° 41° 39° 39° 38° 37° 36°
RealFeel® 33° 31° 29° 28° 28° 28° 27° 26°
Humidity 62% 64% 71% 75% 75% 78% 79% 80%
   
  7pm 8pm 9pm 10pm 11pm 12am 1am 2am
Rain
 
21%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
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Ice
 
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  7pm 8pm 9pm 10pm 11pm 12am 1am 2am
Wind (mph) 20 W 17 W 16 W 14 W 14 WSW 13 WSW 12 WSW 13 SW
UV Index 0 0 0 0 0 0 0 0
Cloud Cover 97% 100% 100% 98% 71% 37% 10% 0%
Dew Point 33° 32° 32° 32° 31° 32° 31° 31°
Middle Grid line 50 F Middle Grid line 45 F Middle Grid line 40 F Middle Grid line 35 F

Temperature History - Apr 20

more Historical Weather Data >
  Today Normal Record 4/20/2014
High 47° 58° N/A 78°
Low 34° 36° N/A 33°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:05 AM with 13:35 of sunlight, then sets at 7:40 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 7:33 AM with 14:30 of moolight, then sets at 10:03 PM

Crystal Lake Weather Report

Chicago: Temperatures to Plummet After Extended Warm Spell

April 20, 2015; 8:24 PM ET

After a two-week stretch of above-normal temperatures, Chicago is set to fall into a chilly pattern into late this week. more >

Mon. Pollen

Mon. Dust & Dander

Mon. Wind Maps