• Today

    Sep 18

    13°Lo 1°

    Clouds giving way to some sun

    Neutral weather for sinus headaches
    • Hi
      RealFeel
      14°
    • UV
      4 - Moderate
    • Cloud
      Cover
      64%
    more
  • Fri

    Sep 19

    13°Lo 7°

    Fog in the a.m.; lots of sun

    Neutral weather for sinus headaches
    • Hi
      RealFeel
      16°
    • UV
      4 - Moderate
    • Cloud
      Cover
      13%
  • Sat

    Sep 20

    20°Lo 14°

    A few afternoon showers

    At Risk weather for sinus headaches
    • Hi
      RealFeel
      17°
    • UV
      3 - Moderate
    • Cloud
      Cover
      60%
    more
  • Sun

    Sep 21

    20°Lo 7°

    Rather cloudy with showers

    Neutral weather for sinus headaches
    • Hi
      RealFeel
      19°
    • UV
      3 - Moderate
    • Cloud
      Cover
      87%
    more
  • Mon

    Sep 22

    13°Lo 5°

    Cooler

    At Risk weather for sinus headaches
    • Hi
      RealFeel
      13°
    • UV
      4 - Moderate
    • Cloud
      Cover
      50%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Fri
4am
5am 6am 7am 8am 9am 10am 11am
  4am 5am 6am 7am 8am 9am 10am 11am
Forecast
Mostly Clear
Fog
Fog
Fog
Sunny
Sunny
Sunny
Sunny
Temp (°C)
RealFeel® 12°
Humidity 63% 65% 70% 67% 61% 56% 52% 46%
   
  4am 5am 6am 7am 8am 9am 10am 11am
Rain
 
0%
 
0%
 
0%
 
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0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
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Ice
 
0%
 
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  4am 5am 6am 7am 8am 9am 10am 11am
Wind (km/h) 5 N 5 N 5 NNE 5 NNE 5 NE 6 ENE 6 ENE 6 E
UV Index 0 0 0 0 0 1 2 3
Cloud Cover 10% 10% 10% 10% 0% 0% 1% 1%
Dew Point -4° -4° -4° -3° -3° -3° -2° -2°
Middle Grid line 10 C Middle Grid line 5 C Middle Grid line 0 C

Temperature History - Sep 19

more Historical Weather Data >
  Today Normal Record 9/19/2013
High 13° 19° 29° (1955) 23°
Low (1969)

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:37 AM with 12:21 of sunlight, then sets at 6:58 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 2:10 AM with 14:23 of moolight, then sets at 4:33 PM

Top Story

Longueuil Weather Report

My Thoughts on the Canada Weather Pattern

September 18, 2014; 3:10 PM ET

Here are my latest thoughts on upcoming weather pattern highlights across canada for the next few weeks. more >