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    • Early AM

      Sep 27

      47° Lo
      Clear
      • Ragweed Pollen
        • Ragweed Pollen
        • Grass Pollen
        • Tree Pollen
        • Mold
        • Dust & Dander
        • Air Quality Index
      • Ragweed Pollen
      • Weather
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Today

      Sep 27

      68° /48°F
      Mostly sunny and breezy
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
    • Wed

      Sep 28

      63° /52°
      Variable clouds with a shower
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Thu

      Sep 29

      70° /54°
      Partly sunny, a shower or two
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    • Fri

      Sep 30

      68° /56°
      Clearing and spotty showers
      • Moderate
      • ragweed pollen levels
      • Grass Pollen: Low
      • Ragweed Pollen: Moderate
      • Tree Pollen: Low
      More
    Tuesday
    4pm
    5pm
    6pm
    7pm
    8pm
    9pm
    10pm
    11pm
    Forecast Mostly Sunny Mostly Sunny Mostly Sunny Mostly Clear Partly Cloudy Partly Cloudy Cloudy Cloudy
    Temp (°F) 67° 66° 64° 60° 57° 56° 55° 53°
    RealFeel® 65° 63° 60° 57° 56° 56° 54° 52°
    Wind (mph) 16 W 15 W 12 W 8 W 5 W 5 WNW 5 WNW 5 WNW
    precip
    4pm
    5pm
    6pm
    7pm
    8pm
    9pm
    10pm
    11pm
    Rain
    2%
    3%
    3%
    6%
    19%
    19%
    24%
    47%
    Snow
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    Ice
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    0%
    SKY
    4pm
    5pm
    6pm
    7pm
    8pm
    9pm
    10pm
    11pm
    UV Index 2 1 0 0 0 0 0 0
    Cloud Cover 11% 11% 23% 25% 30% 42% 54% 66%
    Humidity 34% 37% 43% 49% 55% 63% 67% 70%
    Dew Point 38° 39° 41° 41° 41° 44° 44° 43°
    Temp °F
    4pm
    5pm
    6pm
    7pm
    8pm
    9pm
    10pm
    11pm
    70° 65° 60° 55° 50°

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/27/2015
    High 68° 72° 93° (1998) 76°
    Low 48° 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 27, 2016; 12:53 AM ET

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

    Tue. Pollen

    Tue. Dust & Dander

    Tue. Wind Maps