• Today

    Jul 31

    22°Lo 12°

    A couple of thunderstorms

    Beneficial weather for asthma
    • Hi
      RealFeel
      22°
    • UV
      5 - Moderate
    • Air Qual.
      Good
  • Fri

    Aug 1

    26°Lo 14°

    An afternoon shower or two

    Beneficial weather for asthma
    • Hi
      RealFeel
      26°
    • UV
      6 - High
    • Air Qual.
      Good
    more
  • Sat

    Aug 2

    27°Lo 15°

    A p.m. t-storm in spots

    Beneficial weather for asthma
    • Hi
      RealFeel
      31°
    • UV
      6 - High
    • Air Qual.
      Good
    more
  • Sun

    Aug 3

    27°Lo 15°

    Mainly cloudy with a t-storm

    Beneficial weather for asthma
    • Hi
      RealFeel
      30°
    • UV
      6 - High
    • Cloud
      Cover
      76%
    more
  • Mon

    Aug 4

    26°Lo 14°

    A stray afternoon shower

    Beneficial weather for asthma
    • Hi
      RealFeel
      30°
    • UV
      6 - High
    • Cloud
      Cover
      40%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Thu
1am
2am 3am 4am 5am 6am 7am 8am
  1am 2am 3am 4am 5am 6am 7am 8am
Forecast
Partly Cloudy
Mostly Cloudy
Mostly Cloudy
Partly Cloudy
Partly Cloudy
Partly Sunny
T-storms
Mostly Sunny
Temp (°C) 12° 12° 13° 12° 13° 14° 14° 16°
RealFeel® 12° 11° 12° 11° 12° 13° 12° 17°
Humidity 100% 100% 100% 100% 100% 100% 100% 89%
   
  1am 2am 3am 4am 5am 6am 7am 8am
Rain
 
34%
 
34%
 
34%
 
37%
 
43%
 
47%
 
51%
 
40%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  1am 2am 3am 4am 5am 6am 7am 8am
Wind (km/h) 5 ESE 6 ESE 6 SSE 6 SSE 8 S 8 S 8 S 6 S
UV Index 0 0 0 0 0 0 0 1
Cloud Cover 35% 75% 75% 45% 35% 43% 45% 16%
Dew Point 12° 12° 13° 12° 13° 14° 14° 14°
Middle Grid line 20 C Middle Grid line 15 C Middle Grid line 10 C

Temperature History - Jul 31

more Historical Weather Data >
  Today Normal Record 7/31/2013
High 22° 26° 35° (2012) 27°
Low 12° 15° (1978) 12°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:45 AM with 14:47 of sunlight, then sets at 8:32 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 10:26 AM with 12:00 of moolight, then sets at 10:26 PM

Top Story

Ottawa Weather Report

Smoke From Canada Wildfires to Impact Chicago, NYC

July 31, 2014; 5:02 AM ET

Ongoing wildfires in Ontario and western Canada will impact areas across the Great Lakes to the Northeast through the weekend. more >