• Early AM

    Aug 20

    Lo 61°

    Partly cloudy

    Ragweed Pollen Weather
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      30 - Moderate
    • Tree
      Pollen
      0 - Low
    more
  • Today

    Aug 20

    85°Lo 65°

    Times of clouds and sun

    Moderate ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      30 - Moderate
    • Tree
      Pollen
      0 - Low
  • Thu

    Aug 21

    87°Lo 71°

    A couple of thunderstorms

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

    Aug 22

    89°Lo 72°

    Partly sunny with a t-storm

    Moderate ragweed pollen levels
    • Precip
      55%
    • Wind
      Speed
      7 mph
    • Cloud
      Cover
      48%
    more
  • Sat

    Aug 23

    90°Lo 68°

    A p.m. t-storm possible

    Ragweed Pollen Weather
    • Precip
      30%
    • Wind
      Speed
      7 mph
    • Cloud
      Cover
      50%
    more
Next Previous
Next 8 hours >
  Wed
12am
1am 2am 3am 4am 5am 6am 7am
  12am 1am 2am 3am 4am 5am 6am 7am
Forecast
Partly Cloudy
Partly Cloudy
Clear
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Sunny
Temp (°F) 67° 66° 64° 63° 63° 61° 63° 64°
RealFeel® 66° 64° 64° 62° 62° 60° 62° 64°
Humidity 91% 93% 93% 93% 93% 93% 93% 93%
   
  12am 1am 2am 3am 4am 5am 6am 7am
Rain
 
11%
 
8%
 
2%
 
2%
 
2%
 
2%
 
2%
 
1%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  12am 1am 2am 3am 4am 5am 6am 7am
Wind (mph) 3 NNW 3 NNW 3 NNW 3 NW 3 WNW 3 W 3 W 3 W
UV Index 0 0 0 0 0 0 0 0
Cloud Cover 34% 44% 4% 13% 21% 26% 26% 26%
Dew Point 65° 64° 62° 61° 61° 59° 61° 62°
Middle Grid line 70 F Middle Grid line 65 F Middle Grid line 60 F

Temperature History - Aug 20

more Historical Weather Data >
  Today Normal Record 8/20/2013
High 85° 80° N/A 84°
Low 65° 58° N/A 53°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:05 AM with 13:44 of sunlight, then sets at 7:49 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 12:55 AM with 14:51 of moolight, then sets at 3:46 PM

Top Story

Crystal Lake Weather Report

Chicago: Chance of Showers, Thunderstorms to Remain Through Thursday

August 19, 2014; 7:53 PM ET

There will be an uptick in humidity and storms in Chicago for much of this week. more >

Wed. Pollen

Wed. Dust & Dander

Wed. Wind Maps