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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 ·
Shawinigan’s weather is defined by a humid continental climate with cold, snowy winters and warm, humid summers. The live forecast above shows current conditions for this city in the Mauricie region of Quebec.
What makes Shawinigan’s weather different from nearby cities?
Because Shawinigan sits along the Saint-Maurice River north of Trois-Rivières, it tends to run a few degrees cooler than cities farther south like Montreal weather stations often record. Lake-effect and river-effect snow can add extra accumulation during winter storms, while summer humidity feels more pronounced in the river valley. For a broader look at conditions across the province, visit our Canada weather hub.
How does the Saint-Maurice River affect local conditions?
The river moderates temperatures slightly in spring and fall, delaying the first hard frost near its banks. In winter, open water and leads can produce local bands of cloud and flurries, which the Ottawa weather region also experiences near the Ottawa River. This microclimate means Shawinigan weather hourly updates can differ noticeably from inland neighbourhoods just a few kilometres east.
Frequently asked questions
How severe are Shawinigan winters?
Winters are cold and long, with average highs near −9 °C in January and frequent snowfalls. The season typically runs from late November through early April, and the wind chill can make conditions feel significantly colder.
Does Shawinigan get hot in the summer?
Yes—July and August often see highs around 25 °C, but humidity can make it feel warmer. Thunderstorms are common on summer afternoons, occasionally bringing heavy rain and gusty winds.
When is the best time to visit Shawinigan?
Late June to early September offers the warmest weather for outdoor activities. For reliable ice and snow conditions, January and February are ideal for winter sports enthusiasts.