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    • Tue

      Oct 11

      64° /49°
      Rain in the afternoon
      • Ragweed Pollen
      • Weather
      • Precip: 65%
      • Wind Speed: 10 mph
      • Cloud Cover: 85%
      More
    • Wed

      Oct 12

      70° /47°F
      Periods of rain
      • Ragweed Pollen
      • Weather
      • Precip: 65%
      • Wind Speed: 15 mph
      • Cloud Cover: 98%
    • Thu

      Oct 13

      68° /43°
      Sun and some clouds
      • Ragweed Pollen
      • Weather
      • Precip: 20%
      • Wind Speed: 9 mph
      • Cloud Cover: 45%
      More
    • Fri

      Oct 14

      61° /38°
      Becoming cloudy
      • Ragweed Pollen
      • Weather
      • Precip: 25%
      • Wind Speed: 4 mph
      • Cloud Cover: 46%
      More
    • Sat

      Oct 15

      59° /40°
      A little morning rain
      • Ragweed Pollen
      • Weather
      • Precip: 56%
      • Wind Speed: 10 mph
      • Cloud Cover: 96%
      More

    Day

    70°Hi RealFeel® 66° Precipitation 65%
    Periods of rain
    • WSW 15 mph
    • Gusts: 28 mph
    • Max UV Index: 2 (Low)
    • Thunderstorms: 20%
    • Precipitation: 0.22 in
    • Rain: 0.22 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 3.5 hrs
    • Hours of Rain: 3.5 hrs

    Night

    47°Lo RealFeel® 35° Precipitation 78%
    Rain
    • N 10 mph
    • Gusts: 16 mph
    • Max UV Index: N/A
    • Thunderstorms: 0%
    • Precipitation: 0.48 in
    • Rain: 0.48 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 6 hrs
    • Hours of Rain: 6 hrs

    Temperature History

    more Historical Weather Data >
      Today Normal Record 10/12/2015
    High 70° 66° 86° (1956) 77°
    Low 47° 43° 27° (1908) 50°

    Sunrise/Sunset

    • Sunrise: 7:05 AM
    • Sunset: 6:18 PM
    • Duration: 11:13 hr

    Moonrise/Moonset

    • Moonrise: 4:27 PM
    • Moonset: 3:53 AM
    • Duration: 11:26 hr
    Astronomy

    Ottawa Weather Report

    Chilly winds to howl across Great Lakes early this week

    September 26, 2016; 3:03 AM ET

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