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    • Today

      Sep 25

      84° /54°F
      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
    • 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°
      Partly sunny, breezy and cool
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Wed

      Sep 28

      64° /49°
      Times of clouds and sun
      • 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
    Sunday
    8pm
    9pm
    10pm
    11pm
    12am
    1am
    2am
    3am
    Forecast Cloudy Cloudy Cloudy T-storms Cloudy Cloudy T-storms Cloudy
    Temp (°F) 68° 68° 66° 64° 63° 62° 61° 59°
    RealFeel® 67° 65° 63° 59° 61° 59° 54° 56°
    Wind (mph) 9 W 9 WNW 10 WNW 10 WNW 9 WNW 9 WNW 9 WNW 9 WNW
    precip
    8pm
    9pm
    10pm
    11pm
    12am
    1am
    2am
    3am
    Rain
    34%
    34%
    40%
    51%
    47%
    47%
    51%
    47%
    Snow
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    Ice
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    SKY
    8pm
    9pm
    10pm
    11pm
    12am
    1am
    2am
    3am
    UV Index 0 0 0 0 0 0 0 0
    Cloud Cover 95% 98% 99% 100% 100% 98% 95% 95%
    Humidity 87% 86% 85% 84% 88% 88% 88% 89%
    Dew Point 64° 63° 61° 60° 60° 59° 57° 56°
    Temp °F
    8pm
    9pm
    10pm
    11pm
    12am
    1am
    2am
    3am
    70° 65° 60° 55°

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/25/2015
    High 84° 73° 92° (1908) 83°
    Low 54° 50° 29° (1942) 55°

    Sunrise/Sunset

    • Sunrise: 6:47 AM
    • Sunset: 6:46 PM
    • Duration: 11:59 hr

    Moonrise/Moonset

    • Moonrise: 1:24 AM
    • Moonset: 3:55 PM
    • Duration: 14:31 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 >

    Sun. Pollen

    Sun. Dust & Dander

    Sun. Wind Maps