Thunder Bay Weather: Gusty Sunday, Chilly Night and a Warmer Tuesday

Thunder Bay’s Oct. 4–6 forecast: gusty Sunday, sunny Monday and strong winds on western Lake Superior
THUNDER BAY — WEATHER — Sunday, Oct. 4, 2026: Thunder Bay faces a windy Sunday before sunshine returns Monday and temperatures climb Tuesday. On western Lake Superior, a strong wind warning is in effect, with northwest winds forecast at 25 knots today and tonight.
Thunder Bay: Three-Day Forecast for Oct. 4–6
Sunday, Oct. 4: Clouds and Gusty Northwest Winds
Expect ma