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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Canada Perspective Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
The live forecast above shows Ottawa’s conditions changing hour by hour this afternoon, with a mix of sun and cloud and a high near 24°C, before clouds thicken toward evening. West-northwest winds at 15 km/h will keep the air moving along the Ottawa River.
What is the hourly outlook for Ottawa today?
Temperatures will climb from 20°C mid-morning to the day’s peak around 24°C by 2 p.m. under partly sunny skies. By 6 p.m., clouds increase and a 30 per cent chance of showers arrives, with the mercury dropping to 19°C overnight. Winds stay light out of the northwest, gusting to 20 km/h near the river.
How will the next few days look in the capital?
For those checking the ottawa weather 7 days, expect a warm Wednesday near 25°C with increasing cloud, then a cooler Thursday at 21°C as a trough moves through. The ottawa weather 14 day outlook suggests a return to seasonal highs near 22°C by the weekend. Keep an eye on the ottawa weather radar for any pop-up showers late Wednesday. For weather in ottawa tomorrow, Thursday brings a 40 per cent chance of rain early, clearing by midday. Those planning ahead for weather in ottawa 10 days can anticipate a dry start to next week. If you prefer an ottawa weather hourly accuweather style breakdown, the live forecast above gives you the granular detail for the next 12 hours, including ottawa weather hourly tomorrow trends. For a broader view, see the ottawa weather hourly 7 days tab on our Canada weather hub.
When will Ottawa’s next significant rain arrive?
Models show a cold front crossing the region late Thursday evening, bringing 5 to 10 millimetres of rain. Friday should dry out with highs near 19°C.
Is the humidity expected to drop this week?
Yes, humidity levels will fall from 55 per cent today to around 40 per cent by Thursday as drier air from the north moves in behind the front.
How accurate are hourly forecasts for Ottawa in summer?
Summer convective showers can shift quickly; Environment Canada’s hourly updates have a typical accuracy of 80–85 per cent within the first 12 hours. Check the live forecast above for the latest adjustments.
Sources
For more regional details, visit Ottawa Weather or check warnings on our Weather Warning page.