• Early AM

    Sep 4

    Lo 66°

    Partly to mostly cloudy

    Home Energy Efficiency Weather
    • Avg
      RealFeel
      81°
    • Hi
      RealFeel
      95°
    • Wind
      Speed
      5 mph
    more
  • Today

    Sep 4

    81°Lo 68°

    Periods of sun with a t-storm

    Poor for home energy
    • Avg
      RealFeel
      81°
    • Hi
      RealFeel
      92°
    • Wind
      Speed
      4 mph
  • Sat

    Sep 5

    86°Lo 71°

    Partly sunny, warm and humid

    Poor for home energy
    • Avg
      RealFeel
      84°
    • Hi
      RealFeel
      97°
    • Wind
      Speed
      5 mph
    more
  • Sun

    Sep 6

    88°Lo 71°

    Partly sunny, warm and humid

    Poor for home energy
    • Avg
      RealFeel
      79°
    • Hi
      RealFeel
      91°
    • Wind
      Speed
      9 mph
    more
  • Mon

    Sep 7

    84°Lo 68°

    Mostly cloudy with a t-storm

    Poor for home energy
    • Avg
      RealFeel
      82°
    • Hi
      RealFeel
      93°
    • Wind
      Speed
      5 mph
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Fri
5am
6am 7am 8am 9am 10am 11am 12pm
  5am 6am 7am 8am 9am 10am 11am 12pm
Forecast
Partly Cloudy
Partly Cloudy
Partly Sunny
Partly Sunny
Partly Sunny
Partly Sunny
T-storms
Partly Sunny
Temp (°F) 68° 66° 67° 69° 71° 74° 76° 77°
RealFeel® 68° 66° 67° 70° 75° 81° 84° 88°
Humidity 92% 94% 91% 89% 84% 82% 80% 74%
   
  5am 6am 7am 8am 9am 10am 11am 12pm
Rain
 
7%
 
7%
 
5%
 
15%
 
15%
 
19%
 
51%
 
47%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  5am 6am 7am 8am 9am 10am 11am 12pm
Wind (mph) 4 NNE 4 NNE 5 NNE 5 NNE 4 NNE 4 NE 4 NE 5 NE
UV Index 0 0 0 1 2 3 4 5
Cloud Cover 46% 46% 46% 46% 46% 46% 46% 46%
Dew Point 65° 64° 65° 65° 66° 68° 69° 68°
Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F

Temperature History - Sep 4

more Historical Weather Data >
  Today Normal Record 9/4/2014
High 81° 77° N/A 83°
Low 68° 59° N/A 67°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:18 AM with 13:04 of sunlight, then sets at 7:22 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 10:40 PM with 14:28 of moolight, then sets at 1:08 PM

Lake Forest Weather Report

Chicago: Sun, Humidity to Grip Region Before Stormy Labor Day

September 3, 2015; 5:03 PM ET

As the Labor Day weekend shapes up, Chicago residents will see mostly sunny and humid conditions until the holiday itself on Monday. 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.

Fri. Home Energy Efficiency

Fri. Degree Days

Fri. UV Index