• Early AM

    Dec 20

    Lo -13°

    Clear

    Dust & Dander Weather
    • Precip
      0%
    • Wind
      Speed
      7 k/h
    • Cloud
      Cover
      1%
    more
  • Today

    Dec 20

    -6°Lo -14°

    Partly sunny

    Extreme indoor dust & dander levels
    • Precip
      1%
    • Wind
      Speed
      4 k/h
    • Cloud
      Cover
      26%
    more
  • Sun

    Dec 21

    -5°Lo -10°

    Fog, then some sun

    Extreme indoor dust & dander levels
    • Precip
      19%
    • Wind
      Speed
      4 k/h
    • Cloud
      Cover
      66%
    more
  • Mon

    Dec 22

    -4°Lo -9°

    Some sun, then clouds

    Very High indoor dust & dander levels
    • Precip
      18%
    • Wind
      Speed
      11 k/h
    • Cloud
      Cover
      60%
    more
  • Tue

    Dec 23

    0°Lo -1°

    Cloudy, a wintry mix possible

    Very High indoor dust & dander levels
    • Precip
      35%
    • Wind
      Speed
      15 k/h
    • Cloud
      Cover
      88%
Next Previous
Hi 0° RealFeel® -5° Precipitation 35%

Day

N

E

S

W

  • E 15 km/h
  • Gusts: 26 km/h

Plenty of clouds with snow, sleet and rain possible

  • Max UV Index: 0 (Low)
  • Thunderstorms: 0%
  • Precipitation: 0 mm
  • Rain: 0 mm
  • Snow: 0 CM
  • Ice: 0 mm
  • Hours of Precipitation: 0 hrs
  • Hours of Rain: 0 hrs
Lo -1° RealFeel® -7° Precipitation 74%

Night

N

E

S

W

  • E 17 km/h
  • Gusts: 35 km/h

Ice tapering off; plenty of clouds

  • Max UV Index: N/A
  • Thunderstorms: 0%
  • Precipitation: 5 mm
  • Rain: 0 mm
  • Snow: 0 CM
  • Ice: 5 mm
  • Hours of Precipitation: 3 hrs
  • Hours of Rain: 0 hrs

Temperature History - Dec 23

more Historical Weather Data >
  Today Normal Record 12/23/2013
High -4° 11° (1957) -7°
Low -1° -12° -29° (1943) -16°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 7:40 AM with 8:44 of sunlight, then sets at 4:24 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 8:38 AM with 10:05 of moolight, then sets at 6:43 PM

Nepean Weather Report

Long-Range Forecast Model Update Into Mid-January

December 19, 2014; 9:08 AM ET

Update on the long-range forecast model data. more >