• Tonight

    May 19

    Lo 14°

    Occasional rain, mainly early

    Dust & Dander Weather
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      7 - Low
  • Mon

    May 20

    24°Lo 10°

    Mostly cloudy with a shower

    High indoor dust & dander levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      7 - Low
    more
  • Tue

    May 21

    22°Lo 11°

    Mostly cloudy, showers around

    Very High indoor dust & dander levels
    • Grass
      Pollen
      2 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      7 - Low
    more
  • Wed

    May 22

    20°Lo 11°

    Rain and drizzle possible

    Extreme indoor dust & dander levels
    • Precip
      30%
    • Wind
      Speed
      11 k/h
    • Cloud
      Cover
      89%
    more
  • Thu

    May 23

    24°Lo 10°

    Rain and drizzle possible

    High indoor dust & dander levels
    • Precip
      30%
    • Wind
      Speed
      8 k/h
    • Cloud
      Cover
      76%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Sun
8am
9am 10am 11am 12pm 1pm 2pm 3pm
  8am 9am 10am 11am 12pm 1pm 2pm 3pm
Forecast
Cloudy
Cloudy
Showers
Showers
Showers
Showers
Showers
Showers
Temp (°C) 13° 15° 15° 15° 17° 17° 17° 18°
RealFeel® 11° 14° 15° 16° 18° 18° 18° 18°
Humidity 72% 67% 67% 72% 67% 67% 67% 72%
   
  8am 9am 10am 11am 12pm 1pm 2pm 3pm
Rain
 
49%
 
49%
 
59%
 
71%
 
71%
 
76%
 
68%
 
63%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  8am 9am 10am 11am 12pm 1pm 2pm 3pm
Wind (km/h) 13 E 11 ESE 10 ESE 8 E 11 E 8 ENE 8 E 8 SE
UV Index 1 2 3 3 4 3 2 2
Cloud Cover 100% 90% 90% 100% 100% 100% 100% 100%
Dew Point 10° 11° 11° 11° 13°
Middle Grid line 20 C Middle Grid line 15 C Middle Grid line 10 C

Temperature History - May 19

more Historical Weather Data >
  Today Normal Record 5/19/2012
High 18° 20° 31° (1962) 28°
Low 14° -1° (1944)

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:29 AM with 15:01 of sunlight, then sets at 8:30 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 2:16 PM with 12:19 of moolight, then sets at 2:35 AM

Top Story

Ottawa Weather Report

The Summer Outlook for Canada

May 20, 2013; 5:44 AM ET

The Accuweather.com summer forecast for Canada. more >