• Today

    Aug 20

    86°Lo 69°

    Sun, some clouds

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

    Aug 21

    88°Lo 73°

    A couple of thunderstorms

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

    Aug 22

    91°Lo 72°

    Clouds and sun with a t-storm

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

    Aug 23

    89°Lo 72°

    Clouds and sun with a t-storm

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

    Aug 24

    91°Lo 71°

    Periods of sun, hot and humid

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Wed
7am
8am 9am 10am 11am 12pm 1pm 2pm
  7am 8am 9am 10am 11am 12pm 1pm 2pm
Forecast
Mostly Sunny
Sunny
Sunny
Sunny
Sunny
Mostly Sunny
Mostly Sunny
Partly Sunny
Temp (°F) 66° 69° 72° 76° 79° 80° 82° 84°
RealFeel® 64° 68° 74° 81° 85° 86° 88° 90°
Humidity 87% 81% 73% 66% 61% 57% 54% 51%
   
  7am 8am 9am 10am 11am 12pm 1pm 2pm
Rain
 
5%
 
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%
   
  7am 8am 9am 10am 11am 12pm 1pm 2pm
Wind (mph) 4 WNW 4 WNW 4 WNW 4 WNW 5 WNW 6 W 6 W 6 W
UV Index 0 1 2 4 5 6 7 6
Cloud Cover 15% 2% 4% 6% 8% 10% 10% 46%
Dew Point 62° 63° 63° 64° 65° 64° 64° 65°
Middle Grid line 85 F Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F

Temperature History - Aug 20

more Historical Weather Data >
  Today Normal Record 8/20/2013
High 86° 82° 98° (1947) 88°
Low 69° 63° 47° (1950) 66°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:04 AM with 13:41 of sunlight, then sets at 7:45 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:43 AM with 14:48 of moolight, then sets at 4:31 PM

Top Story

Prospect Heights Weather Report

Chicago: Showers, Thunderstorms to Return Thursday

August 20, 2014; 3:53 AM ET

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

Wed. Snow Day Potential