Home › Weather › Renfrew Weather
Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the Canada Scene Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
[csn_weather]
Renfrew’s weather is defined by cold, snowy winters and warm, humid summers, with spring and autumn offering crisp transitions. The live forecast above shows today’s conditions; for a deeper look, read on.
What is the best time to visit Renfrew?
Late May through September brings the most comfortable weather, with daytime highs in the low 20s to mid-20s °C. July and August can feel humid, but the Ottawa Valley’s lakes and trails make it worthwhile. For snowbirds and March-break travellers, late February to early March still carries deep snow and chilly temperatures—pack a heavy parka and insulated boots.
What should I pack for Renfrew?
Winter (December–February) demands a warm down coat, thermal layers, waterproof boots, and a toque. Summer calls for light cottons, a rain jacket, and sunscreen. Spring and autumn are unpredictable: a fleece and waterproof shell will serve you well. If you’re checking Ottawa weather for a nearby reference, expect Renfrew to be a few degrees cooler, especially overnight.
How does Renfrew weather compare to Arnprior weather?
Renfrew and Arnprior, both in the Ottawa Valley, see very similar conditions. Arnprior is roughly 30 kilometres east, so temperatures and precipitation are nearly identical, though Arnprior can be slightly milder due to its proximity to the Ottawa River.
Where can I find Renfrew weather hourly and the 14-day forecast?
Environment and Climate Change Canada provides official hourly observations and a 14-day outlook for Renfrew. The Weather Network also offers an extended forecast. Both are linked in the sources below. For local updates, check Canada Scene’s weather hub.
Is Port Renfrew weather the same as Renfrew, Ontario?
No—Port Renfrew is on Vancouver Island, British Columbia, and has a mild, rainy coastal climate. Renfrew, Ontario, experiences continental winters and warm summers. Always confirm the location when searching “Port Renfrew weather” versus “Renfrew weather.”