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    • Today

      Sep 27

      69° /48°
      Mostly sunny and breezy
      • 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
    • Wed

      Sep 28

      63° /52°
      A brief shower or two
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Thu

      Sep 29

      71° /56°
      Some sun with a shower or two
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Fri

      Sep 30

      65° /56°F
      Clearing and spotty showers
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
    • Sat

      Oct 1

      69° /52°
      Mostly cloudy, showers around
      • Low
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Low
      • Tree Pollen: Low
      More
    Friday
    9am
    10am
    11am
    12pm
    1pm
    2pm
    3pm
    4pm
    Forecast Cloudy Cloudy Cloudy Cloudy Showers Partly Cloudy Showers Partly Cloudy
    Temp (°F) 58° 60° 61° 62° 63° 63° 63° 63°
    RealFeel® 54° 56° 58° 60° 58° 63° 59° 62°
    Wind (mph) 10 NNE 12 NNE 13 NNE 13 NNE 13 N 12 N 10 N 9 N
    precip
    9am
    10am
    11am
    12pm
    1pm
    2pm
    3pm
    4pm
    Rain
    48%
    44%
    44%
    48%
    51%
    44%
    52%
    48%
    Snow
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    Ice
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    SKY
    9am
    10am
    11am
    12pm
    1pm
    2pm
    3pm
    4pm
    UV Index 0 1 1 2 2 3 2 1
    Cloud Cover 99% 100% 100% 100% 100% 70% 70% 70%
    Humidity 74% 70% 65% 60% 60% 62% 68% 73%
    Dew Point 50° 50° 49° 48° 49° 50° 52° 54°
    Temp °F
    9am
    10am
    11am
    12pm
    1pm
    2pm
    3pm
    4pm
    65° 60° 55°

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/30/2015
    High 65° 71° 94° (1971) 68°
    Low 56° 47° 26° (1899) 42°

    Sunrise/Sunset

    • Sunrise: 6:52 AM
    • Sunset: 6:38 PM
    • Duration: 11:46 hr

    Moonrise/Moonset

    • Moonrise: 6:23 AM
    • Moonset: 6:43 PM
    • Duration: 12:20 hr
    Astronomy

    Ottawa Weather Report

    Chilly winds to howl across Great Lakes early this week

    September 27, 2016; 3:53 AM ET

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

    Fri. Dust & Dander

    Fri. Wind Maps