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  • Today

    Sep 19

    Mostly sunny and cool 13°Lo 4°
    more
  • Sat

    Sep 20

    Showers around in the p.m. 22°Lo 15°
    more
  • Sun

    Sep 21

    Breezy with periods of rain 20°Lo 6°
  • Mon

    Sep 22

    Partly sunny and cooler 12°Lo 6°
    more
  • Tue

    Sep 23

    A couple of showers 16°Lo 3°
    more
Hi 20° RealFeel® 17° Precipitation 67%

Day

N

E

S

W

  • WSW 21 km/h
  • Gusts: 39 km/h

Breezy with periods of rain

  • Max UV Index: 2 (Low)
  • Thunderstorms: 24%
  • Precipitation: 9 mm
  • Rain: 9 mm
  • Snow: 0 CM
  • Ice: 0 mm
  • Hours of Precipitation: 5.5 hrs
  • Hours of Rain: 5.5 hrs
Lo 6° RealFeel® 0° Precipitation 50%

Night

N

E

S

W

  • WNW 14 km/h
  • Gusts: 31 km/h

Partly cloudy and cooler; a late-night shower in places

  • Max UV Index: N/A
  • Thunderstorms: 20%
  • Precipitation: 1 mm
  • Rain: 1 mm
  • Snow: 0 CM
  • Ice: 0 mm
  • Hours of Precipitation: 0.5 hrs
  • Hours of Rain: 0.5 hrs

Temperature History - Sep 21

more Historical Weather Data >
  Today Normal Record 9/21/2013
High 20° 18° 29° (1965) 20°
Low -2° (1956) 12°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:48 AM with 12:15 of sunlight, then sets at 7:03 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 4:15 AM with 13:26 of moolight, then sets at 5:41 PM

Top Story

Ottawa Weather Report

Cold Snap, Widespread Frost Looms for Northeast

September 19, 2014; 4:57 AM 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 >