• Sun

    Sep 6

    90°Lo 70°

    Mostly sunny and very warm

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
  • Mon

    Sep 7

    86°Lo 66°

    Variable clouds, a t-storm

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
  • Tue

    Sep 8

    83°Lo 52°

    Mostly cloudy, showers around

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
  • Wed

    Sep 9

    79°Lo 55°

    Mostly cloudy

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
  • Thu

    Sep 10

    72°Lo 55°

    Brilliant sunshine

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
Next Previous
Hi 86° RealFeel® 90° Precipitation 55%

Day

N

E

S

W

  • SSW 9 mph
  • Gusts: 14 mph

Variable cloudiness with a shower or thunderstorm around; humid and remaining warm

  • Max UV Index: 5 (Moderate)
  • Thunderstorms: 60%
  • Precipitation: 0.1 in
  • Rain: 0.1 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 1 hrs
  • Hours of Rain: 1 hrs
Lo 66° RealFeel® 65° Precipitation 51%

Night

N

E

S

W

  • SSW 6 mph
  • Gusts: 8 mph

Partly cloudy and humid; watch for a strong evening thunderstorm followed by a thunderstorm late

  • Max UV Index: N/A
  • Thunderstorms: 60%
  • Precipitation: 0.16 in
  • Rain: 0.16 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 2 hrs
  • Hours of Rain: 2 hrs

Temperature History - Sep 7

more Historical Weather Data >
  Today Normal Record 9/7/2014
High 86° 80° 101° (1939) 80°
Low 66° 58° 41° (1986) 55°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:27 AM with 12:52 of sunlight, then sets at 7:19 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:14 AM with 14:40 of moolight, then sets at 3:54 PM

Ottawa Weather Report

Chicago: More Foggy Mornings in Store as Heat Holds on

September 2, 2015; 12:21 AM ET

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

The 540 Snow Line

Dec 20, 2012; 5:00 AM ET The 540 line is often used by meteorologists to determine the chances of rain vs. snow.