• Today

    May 21

    18°Lo 14°

    Cooler with showers around

    Neutral weather for sinus headaches
    • Hi
      RealFeel
      16°
    • UV
      3 - Moderate
    • Cloud
      Cover
      92%
  • Wed

    May 22

    22°Lo 14°

    Warmer with a bit of rain

    At Risk weather for sinus headaches
    • Hi
      RealFeel
      22°
    • UV
      2 - Low
    • Cloud
      Cover
      93%
    more
  • Thu

    May 23

    21°Lo 5°

    Rather cloudy, a little rain

    Neutral weather for sinus headaches
    • Hi
      RealFeel
      21°
    • UV
      4 - Moderate
    • Cloud
      Cover
      89%
    more
  • Fri

    May 24

    16°Lo 2°

    Showers, mainly early; cooler

    Neutral weather for sinus headaches
    • Hi
      RealFeel
      15°
    • UV
      5 - Moderate
    • Cloud
      Cover
      73%
    more
  • Sat

    May 25

    16°Lo 3°

    Partly sunny

    Neutral weather for sinus headaches
    • Hi
      RealFeel
      18°
    • UV
      7 - High
    • Cloud
      Cover
      31%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Tue
5am
6am 7am 8am 9am 10am 11am 12pm
  5am 6am 7am 8am 9am 10am 11am 12pm
Forecast
Rain
Rain
Cloudy
Cloudy
Cloudy
Cloudy
Showers
Showers
Temp (°C) 14° 13° 12° 14° 14° 14° 14° 15°
RealFeel® 12° 11° 10° 12° 12° 12° 12° 13°
Humidity 83% 86% 87% 79% 79% 81% 80% 76%
   
  5am 6am 7am 8am 9am 10am 11am 12pm
Rain
 
55%
 
52%
 
49%
 
34%
 
34%
 
40%
 
55%
 
55%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  5am 6am 7am 8am 9am 10am 11am 12pm
Wind (km/h) 6 E 8 ENE 8 ENE 11 ENE 13 ENE 16 NE 19 NNE 19 NE
UV Index 0 0 0 0 1 2 3 2
Cloud Cover 97% 91% 94% 94% 94% 94% 94% 94%
Dew Point 11° 10° 10° 11° 11° 11° 11° 11°
Middle Grid line 20 C Middle Grid line 15 C Middle Grid line 10 C

Temperature History - May 21

more Historical Weather Data >
  Today Normal Record 5/21/2012
High 18° 20° 31° (1977) 29°
Low 14° (1957) 18°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:17 AM with 15:08 of sunlight, then sets at 8:25 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 4:25 PM with 11:02 of moolight, then sets at 3:27 AM

Top Story

Longueuil Weather Report

The Summer Outlook for Canada

May 20, 2013; 2:44 PM ET

The Accuweather.com summer forecast for Canada. more >