• Tonight

    May 25

    Lo 65°

    A late-night t-storm in spots

    Home Energy Efficiency Weather
    • Avg
      RealFeel
      69°
    • Hi
      RealFeel
      78°
    • Wind
      Speed
      16 mph
  • Tue

    May 26

    78°Lo 62°

    A shower and t-storm around

    Poor for home energy
    • Avg
      RealFeel
      70°
    • Hi
      RealFeel
      81°
    • Wind
      Speed
      10 mph
    more
  • Wed

    May 27

    82°Lo 60°

    Lots of sun, a t-storm; warm

    Poor for home energy
    • Avg
      RealFeel
      73°
    • Hi
      RealFeel
      85°
    • Wind
      Speed
      10 mph
    more
  • Thu

    May 28

    85°Lo 64°

    Mostly sunny and very warm

    Poor for home energy
    • Avg
      RealFeel
      74°
    • Hi
      RealFeel
      87°
    • Wind
      Speed
      8 mph
    more
  • Fri

    May 29

    85°Lo 60°

    Partly sunny, a t-storm; warm

    Poor for home energy
    • Avg
      RealFeel
      71°
    • Hi
      RealFeel
      85°
    • Wind
      Speed
      15 mph
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Mon
3am
4am 5am 6am 7am 8am 9am 10am
  3am 4am 5am 6am 7am 8am 9am 10am
Forecast
Mostly Cloudy
Mostly Cloudy
Cloudy
Cloudy
Cloudy
T-storms
T-storms
T-storms
Temp (°F) 69° 67° 68° 67° 69° 67° 69° 68°
RealFeel® 65° 64° 64° 64° 65° 60° 62° 63°
Humidity 74% 77% 76% 79% 79% 81% 73% 72%
   
  3am 4am 5am 6am 7am 8am 9am 10am
Rain
 
47%
 
39%
 
31%
 
31%
 
37%
 
56%
 
60%
 
56%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  3am 4am 5am 6am 7am 8am 9am 10am
Wind (mph) 13 S 14 S 15 S 15 S 15 S 18 SSW 17 SW 16 SW
UV Index 0 0 0 0 0 1 1 2
Cloud Cover 82% 89% 97% 97% 99% 94% 94% 94%
Dew Point 60° 60° 60° 61° 62° 60° 59° 59°
Middle Grid line 70 F Middle Grid line 65 F

Temperature History - May 25

more Historical Weather Data >
  Today Normal Record 5/25/2014
High 80° 75° 96° (1911) 85°
Low 65° 54° 32° (1934) 51°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:28 AM with 14:48 of sunlight, then sets at 8:16 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 12:39 PM with 13:06 of moolight, then sets at 1:45 AM

Ottawa Weather Report

Chicago: Temperatures to Take Dramatic Swing at Late Week

May 25, 2015; 3:54 PM ET

Following the chance for early-week storms, temperatures in the Chicago area will be on a roller coaster leading into the weekend. 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