• Tonight

    Sep 16

    Lo 7°

    Patchy clouds

    Asthma Weather
    • Hi
      RealFeel
      18°
    • UV
      3 - Moderate
    • Air Qual.
      Good
    more
  • Wed

    Sep 17

    17°Lo 8°

    Some sun, then clouds; cool

    Beneficial weather for asthma
    • Hi
      RealFeel
      19°
    • UV
      4 - Moderate
    • Air Qual.
      Good
    more
  • Thu

    Sep 18

    13°Lo 2°

    Mostly sunny

    Beneficial weather for asthma
    • Hi
      RealFeel
      16°
    • UV
      4 - Moderate
    • Air Qual.
      Good
  • Fri

    Sep 19

    14°Lo 7°

    Fog in the a.m.; mostly sunny

    Beneficial weather for asthma
    • Hi
      RealFeel
      18°
    • UV
      4 - Moderate
    • Cloud
      Cover
      11%
    more
  • Sat

    Sep 20

    20°Lo 14°

    Mostly cloudy and warmer

    Beneficial weather for asthma
    • Hi
      RealFeel
      20°
    • UV
      3 - Moderate
    • Cloud
      Cover
      76%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Thu
9am
10am 11am 12pm 1pm 2pm 3pm 4pm
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Forecast
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Mostly Sunny
Temp (°C) 10° 11° 11° 13° 13° 13°
RealFeel® 10° 12° 14° 16° 15° 14°
Humidity 64% 60% 55% 52% 49% 46% 45% 44%
   
  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Rain
 
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0%
 
0%
Snow
 
0%
 
0%
 
0%
 
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Ice
 
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  9am 10am 11am 12pm 1pm 2pm 3pm 4pm
Wind (km/h) 10 NNW 10 NNW 10 N 10 N 10 N 8 NNW 8 NNW 8 NNW
UV Index 1 2 3 4 4 4 3 2
Cloud Cover 21% 11% 11% 11% 11% 11% 11% 11%
Dew Point
Middle Grid line 15 C Middle Grid line 10 C Middle Grid line 5 C

Temperature History - Sep 18

more Historical Weather Data >
  Today Normal Record 9/18/2013
High 13° 19° 30° (1942) 21°
Low (1943)

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:36 AM with 12:24 of sunlight, then sets at 7:00 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 1:14 AM with 14:45 of moolight, then sets at 3:59 PM

Top Story

Longueuil Weather Report

Widespread Frost, Killing Freeze to Seize Northeast Late This Week

September 16, 2014; 6:46 PM ET

The chilliest air of the season so far will settle over much of the Northeast Thursday into Friday and will bring frost to more areas than experienced frost early this week. more >