7-Day Weather Forecast

Ottawa 7-Day Weather Forecast

United States Ottawa, United States

Jul 31 – Aug 6, 2026 as of 19:09

Week at a glance

Week high +39°C +102°F Thu, 6 Aug
Week low +18°C +64°F Mon, 3 Aug
Days with rain chance 4 Fri, 31 Jul · 58%
Avg. high +33°C +91°F

Ottawa — 7-Day Weather Forecast

Weather FAQ for Ottawa

What is the temperature in Ottawa?

The temperature in Ottawa is +32°C.

What does it feel like in Ottawa?

It feels like +22°C in Ottawa.

What are the high and low in Ottawa?

The high is +32°C and the low is +22°C in Ottawa.

What is the chance of rain in Ottawa?

There is a 58% chance of precipitation in Ottawa.

How windy is it in Ottawa?

Winds are around 7.5 m/s from the NW in Ottawa.

What is the UV index in Ottawa?

The UV index is 8 in Ottawa.

Ottawa weather forecast day by day

Next 7 days in Ottawa with daily highs, lows, rain chance and wind.

Friday, 31 July weather in Ottawa

On Friday, 31 July, the Ottawa forecast calls for Thunderstorm, with a high near 32°C and a low around 22°C (feeling like 37°C). About 2.0 mm of precipitation is expected. UV index peaks near 8 — sun protection is advised. Typical daytime humidity is around 71%.

Saturday, 1 August weather in Ottawa

On Saturday, 1 August, the Ottawa forecast calls for Partly Cloudy, with a high near 30°C and a low around 19°C (feeling like 28°C). UV index peaks near 8 — sun protection is advised. Typical daytime humidity is around 56%.

Sunday, 2 August weather in Ottawa

On Sunday, 2 August, the Ottawa forecast calls for Mainly Clear, with a high near 30°C and a low around 19°C (feeling like 33°C). UV index peaks near 8 — sun protection is advised. Typical daytime humidity is around 50%.

Monday, 3 August weather in Ottawa

On Monday, 3 August, the Ottawa forecast calls for Clear, with a high near 31°C and a low around 18°C (feeling like 33°C). UV index peaks near 8 — sun protection is advised. Typical daytime humidity is around 56%.

Tuesday, 4 August weather in Ottawa

On Tuesday, 4 August, the Ottawa forecast calls for Overcast, with a high near 34°C and a low around 18°C (feeling like 37°C). UV index peaks near 8 — sun protection is advised. Typical daytime humidity is around 52%.

Wednesday, 5 August weather in Ottawa

On Wednesday, 5 August, the Ottawa forecast calls for Rainy, with a high near 34°C and a low around 20°C (feeling like 36°C). About 0.6 mm of precipitation is expected. UV index peaks near 7 — sun protection is advised. Typical daytime humidity is around 58%.

Thursday, 6 August weather in Ottawa

On Thursday, 6 August, the Ottawa forecast calls for Overcast, with a high near 39°C and a low around 23°C (feeling like 38°C). Typical daytime humidity is around 49%.