Similar Climates › City Pairings › Ottawa ≈ Duluth
City Pairings
fair match
Ottawa, Ontario, Canada and Duluth, Minnesota are a fair climate match — 1,271 km (790 mi) apart. Ottawa is Köppen zone Dfb; Duluth is Dfb.
See Ottawa on the interactive map →Ottawa and Duluth both sit in the warm-summer continental (Dfb) zone, so their seasonal arcs line up. They sit only about 1,271 km (790 mi) apart — a short hop on the atlas for a climate match this close.
It is a fair match — close on the main numbers, with a few seasonal quirks between Ottawa and Duluth. July by 2°C (Duluth cooler); January means differ by 0°C (Duluth cooler). Rainfall shifts more: Duluth is 35 mm drier in January, and 15 mm wetter in July.
Sunshine stays close: Duluth at 8.9 h/day on average versus 8.4 h/day in Ottawa (January 5.2 h / 4.9 h, July 12.6 h / 12 h). PM2.5 averages stay near each other (9 µg/m³ in Duluth, 8 in Ottawa). Dew points differ modestly (January -15°C vs -13°C; July 14°C vs 15°C).
January & July · °C and mm
Compare Ottawa and Duluth month by month on the interactive map →
See Duluth's climate twin on its own page.
On Similar Climates, Duluth, Minnesota is the closest distant match for Ottawa, Ontario, Canada — scored fair, about 1,271 km (790 mi) away.
Ottawa and Duluth are separated by roughly 1,271 km (790 mi) on the great-circle route.
Yes — both cities are in the same hemisphere, so summer and winter fall in the same calendar months.
Yes — both are warm-summer continental (Dfb).
Ottawa has a warm-summer continental climate (Dfb). January averages a high of -6°C and a low of -15°C with 65 mm of rain; July averages 27°C / 15°C and 90 mm.
Ottawa averages about 4.9 hours of sunshine a day in January and 12 hours in July.
January PM2.5 averages about 4.2 µg/m³ (US AQI 33); July averages 12.5 µg/m³ (US AQI 56).
Other close climate matches for Ottawa: Yekaterinburg (loose), Novosibirsk (loose), Madison (fair).
All warm-summer continental (Dfb) cities on Similar Climates →
Explore Ottawa and Duluth on the interactive map →