• Today

    Aug 31

    81°Lo 66°

    Warmer with hazy sun

    Excellent at the beach or pool
    • UV
      5 - High
    • Cloud
      Cover
      44%
    • Precip
      3%
    more
  • Tue

    Sep 1

    87°Lo 69°

    Fog in the a.m.; mostly sunny

    Excellent at the beach or pool
    • UV
      5 - High
    • Cloud
      Cover
      11%
    • Precip
      8%
  • Wed

    Sep 2

    88°Lo 68°

    Partly sunny and very warm

    Excellent at the beach or pool
    • UV
      5 - High
    • Cloud
      Cover
      28%
    • Precip
      10%
    more
  • Thu

    Sep 3

    88°Lo 66°

    Partly sunny and very warm

    Very Good at the beach or pool
    • UV
      5 - High
    • Cloud
      Cover
      28%
    • Precip
      6%
    more
  • Fri

    Sep 4

    87°Lo 65°

    Sunny and very warm

    Very Good at the beach or pool
    • UV
      5 - High
    • Cloud
      Cover
      4%
    • Precip
      7%
    more
Next Previous
Hi 87° RealFeel® 96° Precipitation 8%

Day

N

E

S

W

  • SSW 7 mph
  • Gusts: 10 mph

Areas of fog in the morning; otherwise, mostly sunny and very warm

  • Max UV Index: 6 (High)
  • 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 69° RealFeel® 68° Precipitation 12%

Night

N

E

S

W

  • SSW 6 mph
  • Gusts: 8 mph

Mainly clear, warm and humid

  • 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 1

more Historical Weather Data >
  Today Normal Record 9/1/2014
High 87° 78° N/A 82°
Low 69° 60° N/A 67°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:16 AM with 13:10 of sunlight, then sets at 7:26 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 9:19 PM with 13:35 of moolight, then sets at 10:54 AM

Lake Forest Weather Report

Chicago: More Foggy Mornings in Store as Heat Holds on

August 31, 2015; 12:12 PM ET

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

What's that Warning? Warnings at the Beach

Jul 25, 2012; 5:00 AM ET If you're headed to the beach, keep an eye out for any of these watches and warnings issued by the NWS.

Tue. Beach & Pool

Tue. UV Index

Tue. Wind Maps