• Today

    Sep 19

    13°Lo 6°

    Partly sunny and cool

    Poor for home energy
    • Avg
      RealFeel
      10°
    • Hi
      RealFeel
      16°
    • Wind
      Speed
      6 k/h
    more
  • Sat

    Sep 20

    21°Lo 17°

    Warmer; a shower in the p.m.

    Poor for home energy
    • Avg
      RealFeel
      16°
    • Hi
      RealFeel
      18°
    • Wind
      Speed
      19 k/h
  • Sun

    Sep 21

    21°Lo 8°

    Breezy with periods of rain

    Poor for home energy
    • Avg
      RealFeel
      11°
    • Hi
      RealFeel
      18°
    • Wind
      Speed
      21 k/h
    more
  • Mon

    Sep 22

    12°Lo 6°

    Cooler; a little morning rain

    Poor for home energy
    • Avg
      RealFeel
    • Hi
      RealFeel
    • Wind
      Speed
      21 k/h
    more
  • Tue

    Sep 23

    16°Lo 4°

    A couple of showers

    Poor for home energy
    • Avg
      RealFeel
    • Hi
      RealFeel
      15°
    • Wind
      Speed
      13 k/h
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Sat
12am
1am 2am 3am 4am 5am 6am 7am
  12am 1am 2am 3am 4am 5am 6am 7am
Forecast
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Sunny
Temp (°C) 10° 10° 10°
RealFeel®
Humidity 58% 58% 58% 60% 62% 61% 64% 68%
   
  12am 1am 2am 3am 4am 5am 6am 7am
Rain
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
1%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
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0%
 
0%
   
  12am 1am 2am 3am 4am 5am 6am 7am
Wind (km/h) 8 S 8 S 8 S 10 S 11 S 11 S 13 S 13 S
UV Index 0 0 0 0 0 0 0 0
Cloud Cover 25% 25% 25% 25% 25% 25% 25% 25%
Dew Point
Middle Grid line 15 C Middle Grid line 10 C Middle Grid line 5 C

Temperature History - Sep 20

more Historical Weather Data >
  Today Normal Record 9/20/2013
High 21° 18° 31° (1983) 26°
Low 17° (1979) 13°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:38 AM with 12:18 of sunlight, then sets at 6:56 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 3:07 AM with 13:57 of moolight, then sets at 5:04 PM

Top Story

Longueuil Weather Report

Recent Chill a Possible Sign of an Early Winter?

September 19, 2014; 12:51 PM ET

Do recent cold weather events signal an early winter for Canada? more >