• Tonight

    Sep 17

    Lo 5°

    Mostly cloudy, a little rain

    Home Energy Efficiency Weather
    • Avg
      RealFeel
    • Hi
      RealFeel
      17°
    • Wind
      Speed
      11 k/h
  • Thu

    Sep 18

    12°Lo -1°

    Turning sunny; cooler

    Poor for home energy
    • Avg
      RealFeel
    • Hi
      RealFeel
      12°
    • Wind
      Speed
      13 k/h
    more
  • Fri

    Sep 19

    14°Lo 7°

    Mostly sunny and pleasant

    Poor for home energy
    • Avg
      RealFeel
      11°
    • Hi
      RealFeel
      17°
    • Wind
      Speed
      8 k/h
    more
  • Sat

    Sep 20

    21°Lo 14°

    A couple of afternoon showers

    Poor for home energy
    • Avg
      RealFeel
      15°
    • Hi
      RealFeel
      19°
    • Wind
      Speed
      15 k/h
    more
  • Sun

    Sep 21

    21°Lo 9°

    Mostly cloudy, showers around

    Poor for home energy
    • Avg
      RealFeel
      13°
    • Hi
      RealFeel
      20°
    • Wind
      Speed
      16 k/h
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Wed
8pm
9pm 10pm 11pm Thu
12am
1am 2am 3am
  8pm 9pm 10pm 11pm 12am 1am 2am 3am
Forecast
Mostly Cloudy
Rain
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Rain
Temp (°C) 13° 13° 13° 12° 11° 10°
RealFeel® 11° 10° 10° 10°
Humidity 86% 87% 86% 87% 86% 82% 80% 80%
   
  8pm 9pm 10pm 11pm 12am 1am 2am 3am
Rain
 
43%
 
51%
 
47%
 
33%
 
33%
 
38%
 
49%
 
56%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  8pm 9pm 10pm 11pm 12am 1am 2am 3am
Wind (km/h) 11 N 11 NNW 10 NW 10 WNW 10 WNW 10 WNW 8 NNW 11 NNW
UV Index 0 0 0 0 0 0 0 0
Cloud Cover 83% 93% 86% 81% 79% 77% 78% 76%
Dew Point 11° 11° 11° 10°
Middle Grid line 15 C Middle Grid line 10 C Middle Grid line 5 C

Temperature History - Sep 17

more Historical Weather Data >
  Today Normal Record 9/17/2013
High 18° 19° 30° (1942) 18°
Low -1° (1950)

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:44 AM with 12:27 of sunlight, then sets at 7:11 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 12:30 AM with 15:00 of moolight, then sets at 3:30 PM

Top Story

Nepean Weather Report

Long Winter Nights, Dry Air Increase Chance to View Aurora

September 17, 2014; 6:16 PM ET

Igniting across Northern skies, ghostly rivers of light dance overhead each year, emitting vibrant shades of green, blue, pink, red and violet. more >