7-Day Forecast Summary
7-Day Detailed Weather Forecast for Ottawa
Overnight |
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Temperature: 65°F Wind Speed: 10 mph Wind Direction: SW Forecast: Mostly cloudy. Low around 65, with temperatures rising to around 70 overnight. Southwest wind around 10 mph. |
Sunday |
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Temperature: 76°F Wind Speed: 10 to 15 mph Wind Direction: W Forecast: A chance of showers and thunderstorms between 11am and 1pm, then showers and thunderstorms between 1pm and 4pm, then a chance of showers and thunderstorms between 4pm and 5pm. Mostly cloudy. High near 76, with temperatures falling to around 69 in the afternoon. West wind 10 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible. |
Sunday Night |
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Temperature: 49°F Wind Speed: 5 to 15 mph Wind Direction: NW Forecast: Mostly clear, with a low around 49. Northwest wind 5 to 15 mph, with gusts as high as 30 mph. |
Monday |
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Temperature: 74°F Wind Speed: 5 to 10 mph Wind Direction: W Forecast: Mostly sunny, with a high near 74. West wind 5 to 10 mph. |
Monday Night |
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Temperature: 55°F Wind Speed: 5 to 10 mph Wind Direction: SW Forecast: Partly cloudy, with a low around 55. Southwest wind 5 to 10 mph. |
Tuesday |
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Temperature: 78°F Wind Speed: 10 to 20 mph Wind Direction: SW Forecast: A chance of showers and thunderstorms between 2pm and 5pm, then a chance of showers and thunderstorms. Mostly sunny, with a high near 78. Chance of precipitation is 50%. |
Tuesday Night |
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Temperature: 57°F Wind Speed: 10 to 15 mph Wind Direction: SW Forecast: A chance of showers and thunderstorms before 8pm, then showers and thunderstorms likely between 8pm and 2am. Mostly cloudy, with a low around 57. Chance of precipitation is 70%. |
Wednesday |
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Temperature: 79°F Wind Speed: 10 to 15 mph Wind Direction: SW Forecast: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 79. Chance of precipitation is 50%. |
Wednesday Night |
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Temperature: 64°F Wind Speed: 10 to 25 mph Wind Direction: S Forecast: Showers and thunderstorms. Mostly cloudy, with a low around 64. Chance of precipitation is 90%. |
Thursday |
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Temperature: 78°F Wind Speed: 25 to 30 mph Wind Direction: SW Forecast: Rain showers before 2pm, then a chance of showers and thunderstorms. Partly sunny, with a high near 78. Chance of precipitation is 80%. |
Thursday Night |
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Temperature: 57°F Wind Speed: 5 to 25 mph Wind Direction: W Forecast: A chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 57. Chance of precipitation is 40%. |
Juneteenth |
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Temperature: 78°F Wind Speed: 5 to 15 mph Wind Direction: W Forecast: A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 78. |
Friday Night |
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Temperature: 58°F Wind Speed: 5 to 15 mph Wind Direction: W Forecast: A slight chance of showers and thunderstorms before 8pm. Mostly clear, with a low around 58. |
Saturday |
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Temperature: 80°F Wind Speed: 5 to 15 mph Wind Direction: W Forecast: A slight chance of showers and thunderstorms after 2pm. Sunny, with a high near 80. |

