• Tonight

    Sep 2

    Lo 70°

    Mostly cloudy with a t-storm

    Snow Days Weather
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
  • Thu

    Sep 3

    89°Lo 69°

    Times of clouds and sun

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

    Sep 4

    89°Lo 70°

    A thunderstorm in spots

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

    Sep 5

    89°Lo 70°

    Partly sunny and very warm

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

    Sep 6

    90°Lo 71°

    Partly sunny and very warm

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Thu
4am
5am 6am 7am 8am 9am 10am 11am
  4am 5am 6am 7am 8am 9am 10am 11am
Forecast
Cloudy
T-storms
Mostly Cloudy
Partly Cloudy
Partly Sunny
Partly Sunny
Partly Sunny
Partly Sunny
Temp (°F) 72° 71° 70° 71° 73° 76° 79° 82°
RealFeel® 73° 69° 70° 72° 75° 80° 87° 91°
Humidity 85% 85% 87% 87% 84% 79% 75% 71%
   
  4am 5am 6am 7am 8am 9am 10am 11am
Rain
 
40%
 
51%
 
47%
 
34%
 
14%
 
14%
 
14%
 
14%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  4am 5am 6am 7am 8am 9am 10am 11am
Wind (mph) 6 SSW 6 SSW 6 SSW 5 S 6 SSW 6 SSW 7 SSW 8 SW
UV Index 0 0 0 0 1 2 3 4
Cloud Cover 90% 87% 79% 70% 46% 46% 46% 46%
Dew Point 67° 67° 66° 67° 68° 69° 71° 72°
Middle Grid line 85 F Middle Grid line 80 F Middle Grid line 75 F Middle Grid line 70 F Middle Grid line 65 F

Temperature History - Sep 3

more Historical Weather Data >
  Today Normal Record 9/3/2014
High 89° 81° 98° (1925) 85°
Low 69° 59° 42° (1974) 63°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:23 AM with 13:02 of sunlight, then sets at 7:25 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 10:46 PM with 14:24 of moolight, then sets at 1:10 PM

Ottawa Weather Report

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

September 2, 2015; 3:34 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 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.

48 Hour Precipitation Forecast

Thu. Snow Day Potential