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    • Today

      Sep 27

      71° /49°F
      Mostly sunny and breezy
      • Beneficial
      • weather for asthma
      • Hi RealFeel: 69°
      • UV: 4 - Moderate
      • Air Qual.: Good
    • Wed

      Sep 28

      63° /51°
      A brief shower or two
      • Neutral
      • weather for asthma
      • Hi RealFeel: 59°
      • UV: 2 - Low
      • Air Qual.: Good
      More
    • Thu

      Sep 29

      71° /55°
      Partly sunny, a shower or two
      • Neutral
      • weather for asthma
      • Hi RealFeel: 69°
      • UV: 4 - Moderate
      • Air Qual.: Good
      More
    • Fri

      Sep 30

      65° /56°
      Clearing and spotty showers
      • Neutral
      • weather for asthma
      • Hi RealFeel: 64°
      • UV: 4 - Moderate
      • Air Qual.: Good
      More
    • Sat

      Oct 1

      69° /52°
      Mostly cloudy with a shower
      • Beneficial
      • weather for asthma
      • Hi RealFeel: 68°
      • UV: 4 - Moderate
      • Air Qual.: Good
      More

    Day

    71°Hi RealFeel® 69° Precipitation 13%
    Sunny to partly cloudy and breezy
    • W 15 mph
    • Gusts: 34 mph
    • Max UV Index: 5 (Moderate)
    • 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

    49°Lo RealFeel® 44° Precipitation 56%
    Breezy this evening; mostly cloudy with a shower
    • WNW 9 mph
    • Gusts: 22 mph
    • Max UV Index: N/A
    • Thunderstorms: 20%
    • Precipitation: 0.06 in
    • Rain: 0.06 in
    • Snow: 0 in
    • Ice: 0 in
    • Hours of Precipitation: 1 hrs
    • Hours of Rain: 1 hrs

    Temperature History

    more Historical Weather Data >
      Today Normal Record 9/27/2015
    High 71° 72° 93° (1998) 76°
    Low 49° 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; 11:53 AM ET

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

    Tue. Air Quality

    Tue. Asthma Risk

    Tue. UV Index