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    • Mon

      Oct 17

      66° /47°F
      Mostly sunny
      • Ragweed Pollen
      • Weather
      • Precip: 20%
      • Wind Speed: 8 mph
      • Cloud Cover: 23%
    • Tue

      Oct 18

      69° /49°
      A little rain in the morning
      • Ragweed Pollen
      • Weather
      • Precip: 58%
      • Wind Speed: 14 mph
      • Cloud Cover: 94%
      More
    • Wed

      Oct 19

      69° /48°
      Mostly sunny
      • Ragweed Pollen
      • Weather
      • Precip: 20%
      • Wind Speed: 9 mph
      • Cloud Cover: 21%
      More
    • Thu

      Oct 20

      69° /48°
      Windy with a little rain
      • Ragweed Pollen
      • Weather
      • Precip: 56%
      • Wind Speed: 20 mph
      • Cloud Cover: 96%
      More
    • Fri

      Oct 21

      70° /48°
      Plenty of clouds
      • Ragweed Pollen
      • Weather
      • Precip: 25%
      • Wind Speed: 16 mph
      • Cloud Cover: 86%
      More

    Day

    66°Hi RealFeel® 66° Precipitation 20%
    Mostly sunny
    • S 8 mph
    • Gusts: 20 mph
    • Max UV Index: 3 (Moderate)
    • Thunderstorms: 0%
    • Precipitation: 0 in
    • Rain: 0 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 0 hrs
    • Hours of Rain: 0 hrs

    Night

    47°Lo RealFeel® 37° Precipitation 56%
    Cloudy with occasional rain
    • S 10 mph
    • Gusts: 16 mph
    • Max UV Index: N/A
    • Thunderstorms: 0%
    • Precipitation: 0.06 in
    • Rain: 0.06 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 1.5 hrs
    • Hours of Rain: 1.5 hrs

    Temperature History

    more Historical Weather Data >
      Today Normal Record 10/17/2015
    High 66° 64° 89° (1950) 57°
    Low 47° 42° 29° (1943) 30°

    Sunrise/Sunset

    • Sunrise: 7:10 AM
    • Sunset: 6:10 PM
    • Duration: 11:00 hr

    Moonrise/Moonset

    • Moonrise: 7:41 PM
    • Moonset: 9:57 AM
    • Duration: 14:16 hr
    Astronomy

    Ottawa Weather Report

    Chilly winds to howl across Great Lakes early this week

    September 27, 2016; 7:42 PM ET

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