• Mon

    Sep 14

    73°Lo 50°

    Considerable cloudiness

    Advisory for hair frizz
    • Wind
      Gust
      13 mph
    • Precip
      25%
    • Hours of Precip
      0
    more
  • Tue

    Sep 15

    68°Lo 48°

    Sunny

    Advisory for hair frizz
    • Wind
      Gust
      14 mph
    • Precip
      1%
    • Hours of Precip
      0
    more
  • Wed

    Sep 16

    75°Lo 48°

    Sunny

    Advisory for hair frizz
    • Wind
      Gust
      16 mph
    • Precip
      0%
    • Hours of Precip
      0
    more
  • Thu

    Sep 17

    75°Lo 51°

    Sunny

    Advisory for hair frizz
    • Wind
      Gust
      16 mph
    • Precip
      0%
    • Hours of Precip
      0
  • Fri

    Sep 18

    78°Lo 57°

    Cloudy

    Advisory for hair frizz
    • Wind
      Gust
      18 mph
    • Precip
      25%
    • Hours of Precip
      1
    more
Next Previous
Hi 75° RealFeel® 77° Precipitation 0%

Day

N

E

S

W

  • S 6 mph
  • Gusts: 16 mph

Sunny

  • Max UV Index: 5 (Moderate)
  • Thunderstorms: 0%
  • Precipitation: 0 in
  • Rain: 0 in
  • Snow: 0 in
  • Ice: 0 in
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo 51° RealFeel® 47° Precipitation 0%

Night

N

E

S

W

  • S 7 mph
  • Gusts: 15 mph

Mainly clear

  • Max UV Index: N/A
  • Thunderstorms: 0%
  • 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 17

more Historical Weather Data >
  Today Normal Record 9/17/2014
High 75° 76° 97° (1927) 73°
Low 51° 53° 31° (1937) 46°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:37 AM with 12:25 of sunlight, then sets at 7:02 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 10:36 AM with 10:48 of moolight, then sets at 9:24 PM

Ottawa Weather Report

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

September 4, 2015; 8:03 PM ET

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