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    • Today

      Sep 25

      84° /54°
      A heavy afternoon t-storm
      • Ragweed Pollen
        • Ragweed Pollen
        • Grass Pollen
        • Tree Pollen
        • Mold
        • Dust & Dander
        • Air Quality Index
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Mon

      Sep 26

      67° /44°
      Mostly sunny and cooler
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Tue

      Sep 27

      66° /46°F
      Partly sunny, breezy and cool
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
    • Wed

      Sep 28

      64° /49°
      Clouds and sun with a shower
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Thu

      Sep 29

      71° /49°
      Mostly sunny and beautiful
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    Tuesday
    5pm
    6pm
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    12am
    Forecast Partly Sunny Partly Sunny Partly Cloudy Cloudy Mostly Cloudy Mostly Cloudy Cloudy Cloudy
    Temp (°F) 63° 61° 58° 56° 55° 54° 52° 51°
    RealFeel® 60° 57° 55° 55° 54° 54° 52° 51°
    Wind (mph) 14 WNW 10 WNW 8 WNW 5 WNW 5 W 4 W 5 W 5 W
    precip
    5pm
    6pm
    7pm
    8pm
    9pm
    10pm
    11pm
    12am
    Rain
    6%
    6%
    6%
    6%
    6%
    5%
    4%
    4%
    Snow
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    Ice
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    SKY
    5pm
    6pm
    7pm
    8pm
    9pm
    10pm
    11pm
    12am
    UV Index 1 0 0 0 0 0 0 0
    Cloud Cover 45% 45% 45% 71% 78% 84% 90% 92%
    Humidity 48% 53% 57% 61% 65% 68% 70% 75%
    Dew Point 43° 44° 43° 42° 43° 43° 43° 44°
    Temp °F
    5pm
    6pm
    7pm
    8pm
    9pm
    10pm
    11pm
    12am
    65° 60° 55° 50°

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/27/2015
    High 66° 72° 93° (1998) 76°
    Low 46° 49° 29° (1937) 63°

    Sunrise/Sunset

    • Sunrise: 6:49 AM
    • Sunset: 6:43 PM
    • Duration: 11:54 hr

    Moonrise/Moonset

    • Moonrise: 3:25 AM
    • Moonset: 5:11 PM
    • Duration: 13:46 hr
    Astronomy

    Ottawa Weather Report

    Chilly winds to howl across Great Lakes early this week

    September 25, 2016; 8:43 AM ET

    Gusty winds will accompany a push of chilly air across the Great Lakes from Sunday night through Tuesday. More >

    Tue. Dust & Dander

    Tue. Wind Maps