Weather conditions, road closures, and headlining events in the Ottawa Valley on August 12th
Forecast for Ottawa Valley on August 26, 2025
The weather in Ottawa Valley on Tuesday, August 26, 2025, is expected to be a cooler, fall-like pattern following recent seasonal highs, signaling a break from summer heat.
According to The Weather Network, the daytime high will reach approximately 19°C, with a nighttime low of around 12°C. The daytime hours will be a mix of sun and clouds, with a 20% chance of precipitation, and partly cloudy conditions at night.
Similarly, the U.S. National Weather Service for Ottawa County, which includes the Ottawa Valley area, predicts highs around 21°C but partly sunny then clearing skies with a 20% chance of rain showers during the day. The night will be mostly clear with lows around 10°C.
The chance of precipitation is low, mainly limited to light showers. The sun will set at 8:17 p.m. today.
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In addition to the weather forecast, there are a few other noteworthy updates. Fire bans are in effect in various parts of the Ottawa Valley due to dry conditions. Carleton Place Canoe Club athletes have excelled locally and on the world stage. The Alzheimer's Society of Lanark, Leeds Grenville is holding a 40 Days of Giving fundraiser.
Lastly, it's important to note that there are scheduled closures on Highway 417. Users can unsubscribe at any time, and their privacy is protected by the Google privacy policy and terms of service.
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[1] The Weather Network: https://www.theweathernetwork.com/ca/on/ottawa [2] U.S. National Weather Service: https://forecast.weather.gov/MapClick.php?lat=45.45&lon=-76.18 [3] CBC News: https://www.cbc.ca/news/canada/ottawa/ottawa-weather-forecast-1.6170558
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