• Today

    Aug 20

    85°Lo 68°

    Times of clouds and sun

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
  • Thu

    Aug 21

    86°Lo 73°

    A couple of thunderstorms

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
  • Fri

    Aug 22

    90°Lo 71°

    Clouds and sun with a t-storm

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
  • Sat

    Aug 23

    87°Lo 70°

    A p.m. t-storm possible

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
  • Sun

    Aug 24

    90°Lo 70°

    Periods of sun; hot, humid

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Thu
3am
4am 5am 6am 7am 8am 9am 10am
  3am 4am 5am 6am 7am 8am 9am 10am
Forecast
T-storms
Cloudy
Mostly Cloudy
Mostly Cloudy
Cloudy
Cloudy
T-storms
Cloudy
Temp (°F) 70° 70° 68° 69° 69° 72° 74° 76°
RealFeel® 70° 70° 68° 69° 70° 74° 76° 82°
Humidity 89% 91% 93% 93% 93% 90% 87% 83%
   
  3am 4am 5am 6am 7am 8am 9am 10am
Rain
 
51%
 
47%
 
15%
 
15%
 
19%
 
47%
 
51%
 
47%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  3am 4am 5am 6am 7am 8am 9am 10am
Wind (mph) 2 SSE 1 ESE 2 SSE 3 SSE 3 SSE 4 SSE 5 S 5 S
UV Index 0 0 0 0 0 1 1 2
Cloud Cover 68% 73% 79% 84% 90% 94% 93% 90%
Dew Point 67° 67° 66° 67° 67° 69° 70° 71°
Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F

Temperature History - Aug 21

more Historical Weather Data >
  Today Normal Record 8/21/2013
High 86° 82° N/A 90°
Low 73° 63° N/A 59°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:07 AM with 13:38 of sunlight, then sets at 7:45 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 2:35 AM with 14:40 of moolight, then sets at 5:15 PM

Top Story

Algonquin Weather Report

Chicago: Threat of Thunderstorms Lingers After Heavy Rains Flood Wrigley Field

August 20, 2014; 4:24 PM ET

While there may be a mix of sunshine and clouds over the area, Chicago is facing more rounds of thunderstorms over the next several days. more >

The 540 Snow Line

Dec 20, 2012; 5:00 AM ET The 540 line is often used by meteorologists to determine the chances of rain vs. snow.

48 Hour Precipitation Forecast

Thu. Snow Day Potential