• Today

    May 18

    22°Lo 10°

    Mostly sunny and nice

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

    May 19

    23°Lo 16°

    Mostly cloudy

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

    May 20

    23°Lo 13°

    A thunderstorm in the area

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

    May 21

    20°Lo 10°

    Mostly cloudy

    Extreme indoor dust & dander levels
    • Precip
      25%
    • Wind
      Speed
      13 k/h
    • Cloud
      Cover
      76%
    more
  • Wed

    May 22

    22°Lo 13°

    Rain and drizzle possible

    Very High indoor dust & dander levels
    • Precip
      30%
    • Wind
      Speed
      10 k/h
    • Cloud
      Cover
      76%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Sat
5pm
6pm 7pm 8pm 9pm 10pm 11pm Sun
12am
  5pm 6pm 7pm 8pm 9pm 10pm 11pm 12am
Forecast
Partly Sunny
Partly Sunny
Partly Cloudy
Mostly Sunny
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Clear
Temp (°C) 21° 20° 20° 19° 17° 17° 16° 15°
RealFeel® 21° 19° 18° 16° 16° 15° 14° 14°
Humidity 26% 30% 35% 41% 46% 49% 54% 55%
   
  5pm 6pm 7pm 8pm 9pm 10pm 11pm 12am
Rain
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  5pm 6pm 7pm 8pm 9pm 10pm 11pm 12am
Wind (km/h) 13 S 11 S 10 S 8 S 8 S 8 SSE 8 ESE 6 E
UV Index 3 1 0 0 0 0 0 0
Cloud Cover 40% 47% 55% 19% 21% 24% 25% 26%
Dew Point
Middle Grid line 25 C Middle Grid line 20 C Middle Grid line 15 C Middle Grid line 10 C

Temperature History - May 18

more Historical Weather Data >
  Today Normal Record 5/18/2012
High 22° 19° 32° (1962) 22°
Low 10° -1° (1944)

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:21 AM with 15:01 of sunlight, then sets at 8:22 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:04 PM with 12:56 of moolight, then sets at 2:00 AM

Top Story

Saint-Laurent Weather Report

The Summer Outlook for Canada

May 18, 2013; 9:44 AM ET

The Accuweather.com summer forecast for Canada. more >