• Today

    Sep 21

    64°Lo 45°

    Partly sunny and cooler

    Poor for home energy
    • Avg
      RealFeel
      53°
    • Hi
      RealFeel
      61°
    • Wind
      Speed
      13 mph
  • Mon

    Sep 22

    65°Lo 49°

    Mostly sunny

    Poor for home energy
    • Avg
      RealFeel
      60°
    • Hi
      RealFeel
      71°
    • Wind
      Speed
      4 mph
    more
  • Tue

    Sep 23

    71°Lo 52°

    Mostly sunny and pleasant

    Poor for home energy
    • Avg
      RealFeel
      63°
    • Hi
      RealFeel
      75°
    • Wind
      Speed
      3 mph
    more
  • Wed

    Sep 24

    72°Lo 52°

    A full day of sunshine

    Poor for home energy
    • Avg
      RealFeel
      63°
    • Hi
      RealFeel
      74°
    • Wind
      Speed
      6 mph
    more
  • Thu

    Sep 25

    76°Lo 52°

    Mostly sunny and pleasant

    Poor for home energy
    • Avg
      RealFeel
      66°
    • Hi
      RealFeel
      79°
    • Wind
      Speed
      4 mph
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Sun
9pm
10pm 11pm Mon
12am
1am 2am 3am 4am
  9pm 10pm 11pm 12am 1am 2am 3am 4am
Forecast
Mostly Clear
Mostly Clear
Clear
Clear
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Clear
Temp (°F) 56° 56° 54° 54° 52° 51° 50° 48°
RealFeel® 52° 52° 51° 50° 49° 48° 47° 46°
Humidity 73% 72% 73% 75% 77% 78% 79% 80%
   
  9pm 10pm 11pm 12am 1am 2am 3am 4am
Rain
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
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0%
Ice
 
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  9pm 10pm 11pm 12am 1am 2am 3am 4am
Wind (mph) 7 N 6 N 6 N 6 N 5 N 5 N 4 N 4 NNW
UV Index 0 0 0 0 0 0 0 0
Cloud Cover 10% 10% 9% 9% 10% 10% 11% 10%
Dew Point 48° 47° 46° 46° 45° 44° 43° 42°
Middle Grid line 60 F Middle Grid line 55 F Middle Grid line 50 F Middle Grid line 45 F

Temperature History - Sep 21

more Historical Weather Data >
  Today Normal Record 9/21/2013
High 64° 73° 92° (1970) 67°
Low 45° 52° 39° (1991) 52°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:38 AM with 12:13 of sunlight, then sets at 6:51 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 4:10 AM with 13:18 of moolight, then sets at 5:28 PM

Top Story

Mount Prospect Weather Report

Drier Air Heads into Chicago Following Storms

September 21, 2014; 5:00 AM ET

After storms clipped Chicagoland early Sunday, drier air will filter into the area for the rest of the week. more >

Energy Efficient Lightbulbs and S.A.D

Sep 8, 2012; 5:00 AM ET With shorter days and colder nights in the fall and winter, some people develop seasonal affective disorder. When shopping for lightbulbs to treat the 'winter blues,'consider energy-efficient bulbs.

Sun. Home Energy Efficiency

Sun. Degree Days

Sun. UV Index