• Today

    Aug 20

    26°Lo 17°

    A thunderstorm this afternoon

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      0 - Low
    more
  • Thu

    Aug 21

    22°Lo 15°

    A couple of showers

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      0 - Low
  • Fri

    Aug 22

    24°Lo 14°

    Clouds and sun

    Low ragweed pollen levels
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      0 - Low
    more
  • Sat

    Aug 23

    25°Lo 13°

    Periods of sun with a shower

    Low ragweed pollen levels
    • Precip
      40%
    • Wind
      Speed
      8 k/h
    • Cloud
      Cover
      46%
    more
  • Sun

    Aug 24

    24°Lo 14°

    Intervals of clouds and sun

    Ragweed Pollen Weather
    • Precip
      13%
    • Wind
      Speed
      8 k/h
    • Cloud
      Cover
      69%
    more
Next Previous
Hi 22° RealFeel® 23° Precipitation 62%

Day

N

E

S

W

  • ENE 13 km/h
  • Gusts: 19 km/h

Variable cloudiness with spotty showers; humid

  • Max UV Index: 3 (Moderate)
  • Thunderstorms: 29%
  • Precipitation: 3 mm
  • Rain: 3 mm
  • Snow: 0 CM
  • Ice: 0 mm
  • Hours of Precipitation: 2 hrs
  • Hours of Rain: 2 hrs
Lo 15° RealFeel® 13° Precipitation 60%

Night

N

E

S

W

  • E 10 km/h
  • Gusts: 19 km/h

Partly cloudy with a couple of showers, mainly early

  • Max UV Index: N/A
  • Thunderstorms: 29%
  • Precipitation: 1 mm
  • Rain: 1 mm
  • Snow: 0 CM
  • Ice: 0 mm
  • Hours of Precipitation: 1.5 hrs
  • Hours of Rain: 1.5 hrs

Temperature History - Aug 21

more Historical Weather Data >
  Today Normal Record 8/21/2013
High 22° 24° 33° (1955) 31°
Low 15° 13° (1940) 17°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 6:11 AM with 13:50 of sunlight, then sets at 8:01 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 2:35 AM with 14:57 of moolight, then sets at 5:32 PM

Top Story

Nepean Weather Report

Weather Pattern Highlights into Next Week

August 20, 2014; 10:27 AM ET

A look at the weather pattern across Canada into next week. more >