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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Toronto Post Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Keep an umbrella handy today as the live forecast above shows rain developing by mid-afternoon; expect temperatures near seasonal highs in the low twenties before a cooler system arrives this weekend.
What does the 7‑day outlook look like?
The 7‑day forecast points to a mix of sun and showers through midweek, with the live forecast above providing hourly breakdowns. Daytime highs hover in the low to mid‑twenties (Celsius), while overnight lows drop to the teens. By Friday, a trough moving in from the west will bring more consistent rain and a slight dip in temperatures. For a broader view, check our Canada weather hub for Ottawa and surrounding regions.
When is the next significant change expected?
According to the live forecast above, a cold front arrives late Saturday, dropping highs to the mid‑teens and introducing gusty northwest winds. The 14‑day outlook suggests a return to seasonal norms by the following Tuesday. In the meantime, radar imagery in the live forecast shows scattered showers lingering into Sunday morning. For comparison, see Toronto Weather, which often sees similar frontal passages.
What is the UV index expected to be today?
Moderate, around 5. Use sunscreen if you plan to be outside in the afternoon, especially when the sun breaks through between showers. The live forecast above includes UV detail for each hour.
Will the rain continue into tomorrow?
Yes, scattered showers are likely overnight and into tomorrow morning, tapering by midday. The live forecast above provides an hourly breakdown for ottawa weather tomorrow, with totals under 10 mm in most areas.
How reliable is the 10‑day forecast at this time of year?
In late spring, day‑to‑day certainty is moderate; the 10‑day trend is useful for planning but check the live forecast above for updated data. For a longer look, the 30‑day outlook from Environment Canada gives a broader pattern, not precise daily conditions.