• Sun

    Sep 6

    88°Lo 68°

    Mostly sunny, warm and humid

    Advisory for hair frizz
    • Wind
      Gust
      7 mph
    • Precip
      12%
    • Hours of Precip
      0
    more
  • Mon

    Sep 7

    89°Lo 65°

    A thunderstorm possible

    Advisory for hair frizz
    • Wind
      Gust
      13 mph
    • Precip
      30%
    • Hours of Precip
      0.5
  • Tue

    Sep 8

    79°Lo 53°

    A thunderstorm possible

    Watch for hair frizz
    • Wind
      Gust
      12 mph
    • Precip
      30%
    • Hours of Precip
      0
    more
  • Wed

    Sep 9

    72°Lo 56°

    Humid with clouds and sun

    Warning for hair frizz
    • Wind
      Gust
      24 mph
    • Precip
      0%
    • Hours of Precip
      1
    more
  • Thu

    Sep 10

    71°Lo 56°

    Cloudy

    Watch for hair frizz
    • Wind
      Gust
      13 mph
    • Precip
      5%
    • Hours of Precip
      0
    more
Next Previous
Hi 89° RealFeel® 92° Precipitation 30%

Day

N

E

S

W

  • WSW 8 mph
  • Gusts: 13 mph

More clouds than sun; remaining very warm with a shower or thunderstorm possible

  • Max UV Index: 4 (Moderate)
  • Thunderstorms: 35%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 65° RealFeel® 63° Precipitation 40%

Night

N

E

S

W

  • E 5 mph
  • Gusts: 7 mph

Partly cloudy with a shower in the area late

  • Max UV Index: N/A
  • Thunderstorms: 35%
  • Precipitation: 0.01 in
  • Rain: 0.01 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0.5 hrs
  • Hours of Rain: 0.5 hrs

Temperature History - Sep 7

more Historical Weather Data >
  Today Normal Record 9/7/2014
High 89° 78° N/A 78°
Low 65° 59° N/A 49°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:25 AM with 12:52 of sunlight, then sets at 7:17 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:10 AM with 14:43 of moolight, then sets at 3:53 PM

St. Charles Weather Report

Chicago: More Foggy Mornings in Store as Heat Holds on

September 1, 2015; 5:41 PM ET

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

The History Behind the UV Index

Nov 12, 2012; 5:00 AM ET The UV index has been around since the early 1990s. It was created to help you plan outdoor activities in hopes to limit overexposure to the sun. Jeannette Calle has more.