• Today

    Aug 31

    86°Lo 69°

    Warm with hazy sunshine

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

    Sep 1

    89°Lo 70°

    Mostly sunny, warm and humid

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

    Sep 2

    90°Lo 69°

    Partly sunny, hot and humid

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

    Sep 3

    90°Lo 69°

    Mostly sunny and very warm

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

    Sep 4

    89°Lo 67°

    Mostly sunny and very warm

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Mon
1am
2am 3am 4am 5am 6am 7am 8am
  1am 2am 3am 4am 5am 6am 7am 8am
Forecast
Partly Cloudy
Fog
Fog
Fog
Fog
Fog
Fog
Hazy
Temp (°F) 65° 65° 65° 64° 64° 63° 64° 64°
RealFeel® 65° 67° 66° 66° 65° 65° 66° 68°
Humidity 96% 93% 93% 93% 93% 100% 99% 100%
   
  1am 2am 3am 4am 5am 6am 7am 8am
Rain
 
0%
 
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%
   
  1am 2am 3am 4am 5am 6am 7am 8am
Wind (mph) 1 N 1 N 1 ENE 1 N 1 SSE 2 SSE 2 SSE 0
UV Index 0 0 0 0 0 0 0 1
Cloud Cover 48% 54% 60% 60% 61% 22% 0% 31%
Dew Point 64° 63° 63° 62° 62° 63° 64° 64°
Middle Grid line 70 F Middle Grid line 65 F Middle Grid line 60 F

Temperature History - Aug 31

more Historical Weather Data >
  Today Normal Record 8/31/2014
High 86° 82° N/A N/A
Low 69° 58° N/A N/A

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:22 AM with 13:09 of sunlight, then sets at 7:31 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 8:46 PM with 13:01 of moolight, then sets at 9:47 AM

Peru Weather Report

Chicago: More Foggy Mornings in Store as Heat Holds on

August 31, 2015; 2:10 PM ET

Chicagoans can expect to begin September with a stretch of higher temperatures, increasing humidity and more foggy mornings. 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

Mon. Snow Day Potential