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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 ·
The live forecast above shows Stittsville’s current conditions. Stittsville, part of Ontario’s Ottawa Valley, experiences a humid continental climate with warm summers and cold, snowy winters, heavily influenced by its proximity to the Ottawa River and the nearby Gatineau Hills.
How does Stittsville’s location affect its weather?
Stittsville lies about 20 kilometres west of downtown Ottawa, placing it in the same broad weather pattern as the capital. The Ottawa River can moderate overnight temperatures, while the Gatineau Hills to the north occasionally block or redirect storm systems. Lake-effect snow from the Great Lakes is less pronounced here than in communities farther west, but winter storms moving up the St. Lawrence Valley can still deliver significant snowfall. For a broader regional view, compare with Ottawa weather or Kingston weather.
What seasonal shifts should you plan for?
Summers in Stittsville are warm and humid, with July highs typically near 26 °C, and occasional heat warnings when humidex values climb above 35. Winters are cold and snowy; January averages around –10 °C, and the area receives roughly 200 centimetres of snow annually. Spring and fall are transitional, with sharp temperature swings and a higher chance of freezing rain in March and November. For current alerts across the region, see Weather Warning.
Where can I find a reliable Stittsville hourly forecast?
Environment and Climate Change Canada (weather.gc.ca) offers the official public forecast. The Weather Network stittsville page provides a complementary view with radar and hourly breakdowns. For detailed local data, a stittsville map showing topography can help explain microclimate differences.
Is Stittsville prone to severe thunderstorms?
Yes, especially in June and July. The Ottawa Valley experiences strong thunderstorms a few times each summer, some producing hail or damaging winds. Check the live forecast above and any weather warnings before outdoor plans. Southern Ontario communities like Toronto weather and Montreal weather face similar risks.
How does Stittsville weather compare to Kanata weather?
Stittsville and Kanata are only about 8 kilometres apart, so conditions are nearly identical. Both share the same forecast zone. For hyper-local differences, a stittsville news outlet sometimes reports neighbourhood wind or rain variations. The live forecast above applies equally to both communities.