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    • Wed

      Oct 5

      79° /51°
      A couple of showers possible
      • Ragweed Pollen
        • Ragweed Pollen
        • Grass Pollen
        • Tree Pollen
        • Mold
        • Dust & Dander
        • Air Quality Index
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Thu

      Oct 6

      72° /49°
      A thunderstorm possible
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Fri

      Oct 7

      68° /41°F
      Cloudy
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
    • Sat

      Oct 8

      62° /43°
      Cloudy and windy
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    • Sun

      Oct 9

      62° /39°
      Overcast
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More

    Day

    68°Hi RealFeel® 68° Precipitation 25%
    Cloudy
    • NE 7 mph
    • Gusts: 20 mph
    • Max UV Index: 2 (Low)
    • Thunderstorms: 2%
    • Precipitation: 0 in
    • Rain: 0 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0 hrs
    • Hours of Rain: 0 hrs

    Night

    41°Lo RealFeel® 28° Precipitation 25%
    Cloudy
    • NNW 15 mph
    • Gusts: 33 mph
    • Max UV Index: N/A
    • Thunderstorms: 0%
    • Precipitation: 0 in
    • Rain: 0 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0 hrs
    • Hours of Rain: 0 hrs

    Temperature History

    more Historical Weather Data >
      Today Normal Record 10/7/2015
    High 68° 68° 90° (1939) 80°
    Low 41° 45° 27° (1935) 51°

    Sunrise/Sunset

    • Sunrise: 6:59 AM
    • Sunset: 6:26 PM
    • Duration: 11:27 hr

    Moonrise/Moonset

    • Moonrise: 12:51 PM
    • Moonset: 10:52 PM
    • Duration: 10:01 hr
    Astronomy

    Ottawa Weather Report

    Chilly winds to howl across Great Lakes early this week

    September 25, 2016; 5:13 PM ET

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