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Ottawa weather in Canada
Long Range Weather Forecast
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Ottawa long range weather

This page presents a long range weather forecast for Ottawa in May as well as other months. You can quickly get a brief overview of the weather to expect in May on a daily basis.

The Ottawa extended forecast data provided is based on the average values of previous years.

See weather calendar ››

Select a month and click on a day for more information

Ottawa 30 days weather forecast

Check out our estimated 30 days weather forecast for Ottawa, as mentioned above it based on the average weather in Ottawa in the last few years and not on forecast models.

For a more accurate and detailed forecast, check out the 14 day weather for Ottawa next to the desired date.

Our long range weather data for Ottawa is updated daily in order to provide you with the most accurate weather data.

Ottawa long range weather forecast - FAQ

Do you provide 30 days weather forecast for Ottawa?
You can see the next 30 weather forecast for Ottawa at the top of the page, the next 14 days (from today) are more accurate, while the other is based on average of previous years.
Can I see the weather forecast for a particular date in Ottawa?
Sure, you can select the date from the calendar above to view the forecast in Ottawa on that date.
How accurate is the long-range weather forecast for Ottawa?
Our long-range weather forecast for Ottawa is provided by using statistics from previous years. Although we cannot predict the weather months in advance, we can see an average.
Can I see a long-range weather forecast for different countries?
Yes, we provide a 14 day weather forecast and a long-range weather forecast for different countries and cities. You can search for a location in the search box at the top of the page.
Long range
More about the weather in Ottawa
Ottawa 14 day weather Ottawa weather in April Ottawa weather in May Ottawa Webcam Weather tomorrow Ottawa Hotels in Ottawa