• Today

    Sep 3

    87°Lo 67°

    A thunderstorm this afternoon

    Fair for lawn mowing
    • Hours of Precip
      1
    • Precip
      55%
    • Hi
      RealFeel
      97°
    more
  • Fri

    Sep 4

    81°Lo 67°

    Periods of sun with a t-storm

    Good for lawn mowing
    • Hours of Precip
      1
    • Precip
      55%
    • Hi
      RealFeel
      93°
    more
  • Sat

    Sep 5

    85°Lo 70°

    Partly sunny, warm and humid

    Good for lawn mowing
    • Hours of Precip
      0
    • Precip
      13%
    • Hi
      RealFeel
      94°
    more
  • Sun

    Sep 6

    87°Lo 72°

    Partly sunny and very warm

    Very Good for lawn mowing
    • Hours of Precip
      1
    • Precip
      13%
    • Hi
      RealFeel
      93°
    more
  • Mon

    Sep 7

    84°Lo 65°

    A thunderstorm or two

    Poor for lawn mowing
    • Hours of Precip
      3
    • Precip
      60%
    • Hi
      RealFeel
      87°
Next Previous
Hi 84° RealFeel® 87° Precipitation 60%

Day

N

E

S

W

  • SE 7 mph
  • Gusts: 12 mph

Mostly cloudy, humid and remaining warm with a couple of thunderstorms around

  • Max UV Index: 3 (Moderate)
  • Thunderstorms: 60%
  • Precipitation: 0.23 in
  • Rain: 0.23 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 3 hrs
  • Hours of Rain: 3 hrs
Lo 65° RealFeel® 63° Precipitation 25%

Night

N

E

S

W

  • SSE 5 mph
  • Gusts: 10 mph

Mostly cloudy

  • Max UV Index: N/A
  • Thunderstorms: 24%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs

Temperature History - Sep 7

more Historical Weather Data >
  Today Normal Record 9/7/2014
High 84° 76° N/A 75°
Low 65° 58° N/A 51°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:23 AM with 12:52 of sunlight, then sets at 7:15 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:07 AM with 14:45 of moolight, then sets at 3:52 PM

Lake Forest Weather Report

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

September 3, 2015; 5:10 AM ET

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

Why Do Leaves Change Color?

Sep 20, 2011; 5:00 AM ET Why do leaves change from green to beautiful shades of red, orange and yellow in the fall?

Mon. Degree Days

Mon. Evapotranspiration