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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Canada Scope Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Before stepping out in Ottawa, check the live forecast above for current conditions and any advisories. The capital’s weather shifts quickly between seasons and even within a single day, so a glance at the ottawa weather hourly breakdown helps you dress appropriately in Celsius temperatures and plan your commute.
What makes Ottawa’s weather distinctive?
Ottawa lies in a humid continental climate zone, which produces warm, humid summers and cold, snowy winters. The Ottawa River and the surrounding greenbelt influence local wind patterns, creating small microclimates across the city. Checking the ottawa weather radar loop on the Canada weather hub gives a clearer picture of approaching precipitation than a single temperature reading.
How reliable are extended forecasts for the capital?
Environment and Climate Change Canada issues forecast guidance out to 14 days, but confidence drops markedly after the first week. The ottawa weather 7 days outlook is generally dependable for trends, while an ottawa weather 30 days projection only helps with broad seasonal patterns. For ottawa weather tomorrow, the short-range forecast above offers the most accurate guidance.
What is Ottawa’s winter weather like?
Ottawa winters are cold with frequent snow. Temperatures often drop below -15°C overnight, and the city receives over two metres of snow annually. Check the live forecast above or visit the weather warning page for extreme cold or snow squall alerts.
Does Ottawa get severe thunderstorms?
Yes, from late spring through summer. Humid air from the south can trigger thunderstorms with heavy rain, hail or strong winds. The ottawa weather radar on the live forecast is useful for tracking approaching storms in real time.
When is the best time for mild weather in Ottawa?
Late May through early September offers the warmest conditions, with July and August highs near 26°C. Spring and fall are cooler but still pleasant. For a weather in ottawa 10 days outlook, the extended forecast above gives a reasonable picture of what to expect.