• Today

    Sep 2

    81°Lo 60°

    Times of sun and clouds

    High ragweed pollen levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      70 - High
    • Tree
      Pollen
      0 - Low
    more
  • Wed

    Sep 3

    82°Lo 69°

    Partly sunny

    High ragweed pollen levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      70 - High
    • Tree
      Pollen
      0 - Low
    more
  • Thu

    Sep 4

    89°Lo 71°

    Times of clouds and sun

    High ragweed pollen levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      70 - High
    • Tree
      Pollen
      0 - Low
  • Fri

    Sep 5

    76°Lo 57°

    A couple of t-storms; cooler

    High ragweed pollen levels
    • Precip
      60%
    • Wind
      Speed
      8 mph
    • Cloud
      Cover
      76%
    more
  • Sat

    Sep 6

    71°Lo 53°

    Mostly sunny and pleasant

    Ragweed Pollen Weather
    • Precip
      11%
    • Wind
      Speed
      6 mph
    • Cloud
      Cover
      15%
    more
Next Previous
Hi 89° RealFeel® 95° Precipitation 25%

Day

N

E

S

W

  • S 11 mph
  • Gusts: 19 mph

Warmer and humid with intervals of clouds and sunshine

  • Max UV Index: 5 (Moderate)
  • Thunderstorms: 24%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 71° RealFeel® 69° Precipitation 57%

Night

N

E

S

W

  • W 8 mph
  • Gusts: 16 mph

Warm and humid with increasing amounts of clouds; occasional rain and a thunderstorm late

  • Max UV Index: N/A
  • Thunderstorms: 60%
  • Precipitation: 0.2 in
  • Rain: 0.2 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 2 hrs
  • Hours of Rain: 2 hrs

Temperature History - Sep 4

more Historical Weather Data >
  Today Normal Record 9/4/2013
High 89° 77° N/A 81°
Low 71° 59° N/A 54°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:19 AM with 13:02 of sunlight, then sets at 7:21 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 4:00 PM with 10:11 of moolight, then sets at 2:11 AM

Top Story

Lake Forest Weather Report

Chicago: Cooler, Less Humid Air to Return by Late Week

September 2, 2014; 1:18 PM ET

While Labor Day marks an unofficial end to the summer, the Chicago area will see warm, humid conditions continue before temperatures slide late in the week. more >

Thu. Dust & Dander

Thu. Wind Maps