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  • Today

    May 18

    Times of clouds and sun 19°Lo 11°
    more

  • Sun

    May 19

    Times of clouds and sun 22°Lo 13°
    more

  • Mon

    May 20

    Partly sunny and pleasant 25°Lo 17°
    more

  • Tue

    May 21

    Periods of rain and a t-storm 24°Lo 13°

  • Wed

    May 22

    A couple of thunderstorms 20°Lo 14°
    more

Rain and thunderstorms late Monday night through late Wednesday night Details >

< Previous 8 hours Next 8 hours >
  Tue
9am		 10am 11am 12pm 1pm 2pm 3pm 4pm
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Forecast
Cloudy
T-storms
Cloudy
Cloudy
T-storms
T-storms
T-storms
T-storms
Temp (°C) 20° 21° 22° 23° 24° 24° 22° 22°
RealFeel® 20° 22° 25° 27° 27° 28° 26° 25°
Humidity 80% 76% 71% 66% 66% 75% 86% 79%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Rain
 
44%
 
52%
 
47%
 
47%
 
51%
 
63%
 
63%
 
63%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Wind (km/h) 6 SW 6 WSW 6 WSW 6 W 6 W 8 WNW 6 WNW 5 NNW
UV Index 2 3 5 5 6 5 5 3
Cloud Cover 94% 94% 94% 94% 94% 94% 94% 94%
Dew Point 16° 17° 17° 17° 17° 19° 20° 19°
Middle Grid line 25 C Middle Grid line 20 C Middle Grid line 15 C

Temperature History - May 21

more Historical Weather Data >
  Today Normal Record 5/21/2012
High 24° 18° 32° (1941) 26°
Low 13° 8° -1° (1895) 16°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:46 AM with 14:57 of sunlight, then sets at 8:43 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 4:47 PM with 11:07 of moolight, then sets at 3:54 AM

Top Story

Thornhill Weather Report

The Summer Outlook for Canada

May 18, 2013; 9:44 AM ET

The Accuweather.com summer forecast for Canada. more >