• Today

    Sep 17

    18°Lo 5°

    A couple of afternoon showers

    Very Good for driving
    • Precip
      60%
    • Hours of Precip
      3
    • Rain
      5 mm
  • Thu

    Sep 18

    12°Lo -1°

    Mostly sunny and cooler

    Excellent for driving
    • Precip
      0%
    • Hours of Precip
      0
    • Rain
      0 mm
    more
  • Fri

    Sep 19

    15°Lo 6°

    Mostly sunny and pleasant

    Excellent for driving
    • Precip
      0%
    • Hours of Precip
      0
    • Rain
      0 mm
    more
  • Sat

    Sep 20

    19°Lo 16°

    Showers around in the p.m.

    Very Good for driving
    • Precip
      60%
    • Hours of Precip
      3
    • Rain
      5 mm
    more
  • Sun

    Sep 21

    21°Lo 8°

    A couple of showers possible

    Very Good for driving
    • Precip
      30%
    • Hours of Precip
      0
    • Rain
      0 mm
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Wed
11am
12pm 1pm 2pm 3pm 4pm 5pm 6pm
  11am 12pm 1pm 2pm 3pm 4pm 5pm 6pm
Forecast
Mostly Sunny
Partly Sunny
Partly Sunny
Mostly Cloudy
Mostly Cloudy
Mostly Cloudy
Showers
Showers
Temp (°C) 14° 15° 16° 17° 18° 17° 16° 16°
RealFeel® 17° 18° 18° 18° 18° 15° 13° 12°
Humidity 68% 63% 61% 61% 58% 64% 70% 74%
   
  11am 12pm 1pm 2pm 3pm 4pm 5pm 6pm
Rain
 
7%
 
7%
 
11%
 
19%
 
19%
 
24%
 
60%
 
60%
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) 6 SW 8 SW 10 SW 11 SW 13 SW 13 SW 14 SW 13 SW
UV Index 3 4 4 3 3 1 1 0
Cloud Cover 25% 32% 40% 76% 76% 76% 82% 82%
Dew Point 10° 11° 11°
Middle Grid line 20 C Middle Grid line 15 C Middle Grid line 10 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 6:43 AM with 12:27 of sunlight, then sets at 7:10 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 12:29 AM with 15:00 of moolight, then sets at 3:29 PM

Top Story

Ottawa Weather Report

Widespread Frost, Killing Freeze to Seize Northeast Late This Week

September 17, 2014; 4:13 AM ET

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