• Tonight

    Aug 1

    Lo 13°

    A shower early; mostly cloudy

    Ragweed Pollen Weather
    • Grass
      Pollen
      0 - Low
    • Ragweed
      Pollen
      0 - Low
    • Tree
      Pollen
      0 - Low
  • Sat

    Aug 2

    27°Lo 14°

    A thunderstorm in spots

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

    Aug 3

    27°Lo 15°

    A thunderstorm in spots

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

    Aug 4

    27°Lo 14°

    A couple of p.m. t-storms

    Low ragweed pollen levels
    • Precip
      60%
    • Wind
      Speed
      6 k/h
    • Cloud
      Cover
      54%
    more
  • Tue

    Aug 5

    25°Lo 13°

    Chance of a thunderstorm

    Ragweed Pollen Weather
    • Precip
      30%
    • Wind
      Speed
      8 k/h
    • Cloud
      Cover
      69%
    more
Next Previous
< Previous 8 hours Next 8 hours >
  Fri
8am
9am 10am 11am 12pm 1pm 2pm 3pm
  8am 9am 10am 11am 12pm 1pm 2pm 3pm
Forecast
Mostly Cloudy
Partly Sunny
Partly Sunny
Partly Sunny
Partly Sunny
Partly Sunny
Partly Sunny
Partly Sunny
Temp (°C) 17° 18° 20° 23° 24° 26° 25° 27°
RealFeel® 17° 19° 21° 26° 26° 28° 26° 29°
Humidity 87% 84% 78% 71% 66% 54% 57% 54%
   
  8am 9am 10am 11am 12pm 1pm 2pm 3pm
Rain
 
7%
 
7%
 
7%
 
7%
 
7%
 
9%
 
11%
 
11%
Snow
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
Ice
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
 
0%
   
  8am 9am 10am 11am 12pm 1pm 2pm 3pm
Wind (km/h) 8 S 10 SSW 10 SSW 8 SW 13 SW 14 WSW 16 S 11 S
UV Index 1 3 4 5 6 7 6 5
Cloud Cover 85% 45% 45% 35% 35% 35% 36% 36%
Dew Point 15° 15° 16° 17° 17° 16° 16° 17°
Middle Grid line 30 C Middle Grid line 25 C Middle Grid line 20 C Middle Grid line 15 C

Temperature History - Aug 1

more Historical Weather Data >
  Today Normal Record 8/1/2013
High 27° 26° 37° (1955) 23°
Low 13° 15° (1947) 15°

Sunrise/Sunset

Sunrise / Sunset Illustration

Rises at 5:47 AM with 14:44 of sunlight, then sets at 8:31 PM

Moonrise/Moonset

Astronomy >
Moonrise / Moonset Illustration

Rises at 11:27 AM with 11:27 of moolight, then sets at 10:54 PM

Top Story

Ottawa Weather Report

Weather Pattern Clues for August

August 1, 2014; 10:23 AM ET

A look at what the weather pattern may be like for August. more >