• Tonight

    May 18

    Lo 9°

    Some clouds

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

    May 19

    23°Lo 17°

    Mostly cloudy

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

    May 20

    24°Lo 11°

    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

    16°Lo 9°

    Mostly cloudy and cooler

    Extreme indoor dust & dander levels
    • Precip
      25%
    • Wind
      Speed
      13 k/h
    • Cloud
      Cover
      92%
    more
  • Wed

    May 22

    20°Lo 11°

    Rain and drizzle possible

    Extreme indoor dust & dander levels
    • Precip
      30%
    • Wind
      Speed
      10 k/h
    • Cloud
      Cover
      83%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Sat
11pm
Sun
12am
1am 2am 3am 4am 5am 6am
  11pm 12am 1am 2am 3am 4am 5am 6am
Forecast
Mostly Clear
Mostly Clear
Mostly Clear
Cloudy
Cloudy
Cloudy
Mostly Cloudy
Mostly Cloudy
Temp (°C) 16° 14° 13° 12° 11°
RealFeel® 15° 13° 13° 12° 10°
Humidity 44% 52% 58% 64% 72% 80% 83% 86%
   
  11pm 12am 1am 2am 3am 4am 5am 6am
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%
   
  11pm 12am 1am 2am 3am 4am 5am 6am
Wind (km/h) 5 SW 5 SW 5 SW 5 S 5 ESE 5 NE 6 NE 8 NE
UV Index 0 0 0 0 0 0 0 0
Cloud Cover 11% 13% 14% 68% 70% 72% 76% 76%
Dew Point
Middle Grid line 20 C Middle Grid line 15 C Middle Grid line 10 C Middle Grid line 5 C

Temperature History - May 18

more Historical Weather Data >
  Today Normal Record 5/18/2012
High 21° 19° 32° (1962) 22°
Low -1° (1944)

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:21 AM with 15:00 of sunlight, then sets at 8:21 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:03 PM with 12:56 of moolight, then sets at 1:59 AM

Top Story

Delson Weather Report

The Summer Outlook for Canada

May 18, 2013; 9:44 AM ET

The Accuweather.com summer forecast for Canada. more >