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Live forecasts update automatically; written guidance last reviewed 16 June 2026 by the True North Brief Weather Desk. Data from Environment and Climate Change Canada and other national met services via Open-Meteo.
Live data from Open-Meteo · updates automatically ·
Current readings for Greater Sudbury, as shown in the live forecast above, place the city within a continental climate zone where daytime highs in mid-summer typically range from 22 °C to 26 °C and winter lows often drop below –15 °C.
What are the seasonal temperature extremes in Greater Sudbury?
January averages a high near –8 °C and a low near –20 °C; July averages a high near 25 °C and a low near 13 °C. This 33‑degree swing between monthly means reflects the city’s inland location away from any major body of water that would moderate temperatures.
How much precipitation does Sudbury receive annually?
Annual precipitation totals about 900 mm, divided roughly equally between rain and snowfall. The heaviest snowfall occurs from November through March, with an average seasonal accumulation of roughly 260 cm.
Does Sudbury get lake‑effect snow?
Yes. Northerly winds crossing Georgian Bay can produce bands of heavy snow on Sudbury’s southern edge, especially from November to January. The city receives more snow than Toronto but less than the snowbelt communities farther south.
When is the best time to visit for mild weather?
Late June through early September offers the most reliable warm days, with July and August highs typically in the low‑to‑mid 20s °C. Evenings are cool, so a light jacket is useful.
How does Sudbury’s climate compare to Ottawa’s?
Both cities have similar winter cold and summer warmth, but Ottawa averages slightly lower winter lows (about –15 °C versus –13 °C for Sudbury) and receives less annual snowfall (roughly 220 cm). See the Ottawa Weather page for details.
Sources
For a broader view of conditions across the country, visit the Canada weather hub. If you’re planning travel to Alberta, check current conditions in Calgary Weather or Edmonton Weather.