• Tonight

    Apr 27

    Lo 34°

    Clear and chilly

    Home Energy Efficiency Weather
    • Avg
      RealFeel
      49°
    • Hi
      RealFeel
      64°
    • Wind
      Speed
      12 mph
  • Tue

    Apr 28

    63°Lo 38°

    Sunny to partly cloudy

    Poor for home energy
    • Avg
      RealFeel
      54°
    • Hi
      RealFeel
      68°
    • Wind
      Speed
      6 mph
    more
  • Wed

    Apr 29

    66°Lo 38°

    Periods of sun

    Poor for home energy
    • Avg
      RealFeel
      49°
    • Hi
      RealFeel
      69°
    • Wind
      Speed
      8 mph
    more
  • Thu

    Apr 30

    60°Lo 36°

    Periods of clouds and sun

    Poor for home energy
    • Avg
      RealFeel
      46°
    • Hi
      RealFeel
      60°
    • Wind
      Speed
      13 mph
    more
  • Fri

    May 1

    68°Lo 49°

    Sunny and warmer

    Poor for home energy
    • Avg
      RealFeel
      58°
    • Hi
      RealFeel
      72°
    • Wind
      Speed
      8 mph
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Mon
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Forecast
Sunny
Partly Sunny
Mostly Sunny
Mostly Clear
Mostly Clear
Mostly Clear
Clear
Clear
Temp (°F) 61° 59° 56° 50° 47° 44° 42° 41°
RealFeel® 59° 55° 51° 44° 43° 42° 41° 40°
Humidity 38% 40% 43% 56% 64% 69% 72% 77%
   
  5pm 6pm 7pm 8pm 9pm 10pm 11pm 12am
Rain
 
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Snow
 
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  5pm 6pm 7pm 8pm 9pm 10pm 11pm 12am
Wind (mph) 13 NNE 13 NE 13 NE 10 NNE 7 NNE 6 NE 5 NE 5 NE
UV Index 2 1 0 0 0 0 0 0
Cloud Cover 6% 33% 29% 19% 15% 11% 7% 3%
Dew Point 35° 35° 34° 35° 35° 34° 34° 34°
Middle Grid line 65 F Middle Grid line 60 F Middle Grid line 55 F Middle Grid line 50 F Middle Grid line 45 F Middle Grid line 40 F

Temperature History - Apr 27

more Historical Weather Data >
  Today Normal Record 4/27/2014
High 62° 67° 90° (1986) 70°
Low 34° 44° 21° (1933) 47°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:58 AM with 13:50 of sunlight, then sets at 7:48 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:53 PM with 13:21 of moolight, then sets at 3:14 AM

Ottawa Weather Report

Sunshine to Prevail This Week in Chicago

April 27, 2015; 4:50 PM ET

Sunny skies and cooler conditions will be the rule this week in Chicago. more >

Energy Efficient Lightbulbs and S.A.D

Sep 8, 2012; 5:00 AM ET With shorter days and colder nights in the fall and winter, some people develop seasonal affective disorder. When shopping for lightbulbs to treat the 'winter blues,'consider energy-efficient bulbs.

Mon. Home Energy Efficiency

Mon. Degree Days

Mon. UV Index