• Tonight

    Sep 16

    Lo 5°

    Clear to partly cloudy

    Construction Weather
    • Precip
      25%
    • Hours of Precip
      0
    • Hi
      RealFeel
      17°
  • Wed

    Sep 17

    17°Lo 5°

    Some sun, then clouds

    Very Good for outdoor DIY projects
    • Precip
      25%
    • Hours of Precip
      0
    • Hi
      RealFeel
      19°
    more
  • Thu

    Sep 18

    12°Lo 1°

    Mostly sunny and cool

    Very Good for outdoor DIY projects
    • Precip
      0%
    • Hours of Precip
      0
    • Hi
      RealFeel
      14°
    more
  • Fri

    Sep 19

    15°Lo 6°

    Mostly sunny and pleasant

    Excellent for outdoor DIY projects
    • Precip
      0%
    • Hours of Precip
      0
    • Hi
      RealFeel
      16°
    more
  • Sat

    Sep 20

    20°Lo 16°

    Mostly cloudy and breezy

    Very Good for outdoor DIY projects
    • Precip
      9%
    • Hours of Precip
      0
    • Hi
      RealFeel
      19°
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Tue
11am
12pm 1pm 2pm 3pm 4pm 5pm 6pm
  11am 12pm 1pm 2pm 3pm 4pm 5pm 6pm
Forecast
Mostly Cloudy
Cloudy
Partly Cloudy
Cloudy
Partly Sunny
Partly Sunny
Partly Sunny
Partly Sunny
Temp (°C) 13° 14° 16° 16° 17° 18° 17° 17°
RealFeel® 11° 13° 17° 15° 17° 17° 14° 15°
Humidity 83% 83% 67% 58% 54% 52% 48% 44%
   
  11am 12pm 1pm 2pm 3pm 4pm 5pm 6pm
Rain
 
20%
 
20%
 
13%
 
0%
 
0%
 
0%
 
0%
 
0%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  11am 12pm 1pm 2pm 3pm 4pm 5pm 6pm
Wind (km/h) 13 W 11 W 13 W 13 WSW 16 WNW 14 W 22 W 14 W
UV Index 2 2 4 2 3 2 1 0
Cloud Cover 75% 90% 70% 95% 48% 38% 41% 45%
Dew Point 10° 11° 10°
Middle Grid line 20 C Middle Grid line 15 C Middle Grid line 10 C

Temperature History - Sep 16

more Historical Weather Data >
  Today Normal Record 9/16/2013
High 18° 19° 34° (1939) 12°
Low (1948)

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:42 AM with 12:30 of sunlight, then sets at 7:12 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 11:56 PM with -9:-11 of moolight, then sets at 2:45 PM

Top Story

Ottawa 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 >