• Tonight

    Sep 18

    Lo -1°

    Clear

    Common Cold Weather
    • Avg
      Temp
    • Avg
      RealFeel
    • Hi
      RealFeel
      10°
    more
  • Fri

    Sep 19

    14°Lo 4°

    Mostly sunny and cool

    Beneficial weather for colds
    • Avg
      Temp
    • Avg
      RealFeel
    • Hi
      RealFeel
      15°
  • Sat

    Sep 20

    20°Lo 16°

    A couple of afternoon showers

    Neutral weather for colds
    • Avg
      Temp
      18°
    • Avg
      RealFeel
      15°
    • Hi
      RealFeel
      17°
    more
  • Sun

    Sep 21

    20°Lo 7°

    Mostly cloudy, showers around

    At Risk weather for colds
    • Avg
      Temp
      14°
    • Avg
      RealFeel
      11°
    • Hi
      RealFeel
      19°
    more
  • Mon

    Sep 22

    13°Lo 5°

    Partly sunny and cooler

    Neutral weather for colds
    • Avg
      Temp
    • Avg
      RealFeel
    • Hi
      RealFeel
      12°
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Fri
3am
4am 5am 6am 7am 8am 9am 10am
  3am 4am 5am 6am 7am 8am 9am 10am
Forecast
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Clear
Mostly Sunny
Sunny
Sunny
Sunny
Temp (°C) -1°
RealFeel® -2°
Humidity 63% 64% 64% 75% 65% 57% 51% 48%
   
  3am 4am 5am 6am 7am 8am 9am 10am
Rain
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
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  3am 4am 5am 6am 7am 8am 9am 10am
Wind (km/h) 8 N 6 NNE 6 NNE 6 NNE 6 NE 6 NE 8 ENE 10 E
UV Index 0 0 0 0 0 0 1 2
Cloud Cover 10% 10% 10% 10% 10% 5% 5% 5%
Dew Point -4° -5° -5° -5° -5° -5° -4° -3°
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 14° 19° 31° (1946) 25°
Low (1943)

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:46 AM with 12:21 of sunlight, then sets at 7:07 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 2:19 AM with 14:23 of moolight, then sets at 4:42 PM

Top Story

Ottawa Weather Report

Cold Snap, Widespread Frost Looms for Northeast

September 18, 2014; 5:00 PM ET

The chilliest air of the season so far will settle over much of the Northeast into Friday and will bring frost to a large area. more >