• Mostly clear 59°
    Snow Days Current Weather
    • Wind
      Chill
      59°
    • Yesterday
      Precip
      0.09 in
    • Cloud
      Cover
      14%
  • Today

    Aug 2

    Hi 82°

    A thunderstorm in spots

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    Day Details >
  • Tomorrow

    Aug 3

    Hi 80°

    Strong afternoon t-storms

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    Day Details >
  • Tuesday

    Aug 4

    Hi 74°

    A brief shower or two

    Very Unlikely for a snow day
    • Snow
      0%
    • Ice
      0%
    • Snow
      0 in
    Day Details >
Next

Thunderstorms, some strong, tomorrow afternoon

8/2 8/3 Now: 5:18am
AM 5-9
  • 5am Mostly clear 59° 20%
  • 6am Partly sunny 60° 20%
  • 7am Partly sunny 62° 13%
  • 8am Partly sunny 64° 0%
  • 9am Partly sunny 68° 0%
PM 4-9
  • 4pm Partly sunny 82° 18%
  • 5pm Mostly sunny 81° 43%
  • 6pm Partly sunny 79° 47%
  • 7pm Mostly cloudy w/ t-storms 76° 51%
  • 8pm Intermittent clouds 73° 43%
  • 9pm Mostly cloudy w/ t-storms 71° 51%
PM 10-3
  • 10pm Intermittent clouds 71° 47%
  • 11pm Intermittent clouds 70° 32%
  • 12am Intermittent clouds 70° 32%
  • 1am Mostly cloudy 69° 32%
  • 2am Cloudy 70° 32%
  • 3am Cloudy 69° 32%
Hourly Forecast >
Aug 02, 2015; 12:09 AM ET
Five-day Weather Forecast for Ottawa, ON
Ottawa, ON Weather Forecast

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The 540 Snow Line

Dec 20, 2012; 5:00 AM ET The 540 line is often used by meteorologists to determine the chances of rain vs. snow.

48 Hour Precipitation Forecast

Sun. Snow Day Potential