August 31, 2026: Thunder Bay Weather — Morning Rain and Thunderstorms, Strong Wind Warning on Western Lake Superior

Thunder Bay weather for August 31, 2026: Showers, 10 to 15 mm of rain and thunderstorms are expected before clearing tonight
THUNDER BAY – WEATHER – Monday, August 31, 2026 – Thunder Bay closes out August with a wet and unsettled Monday morning. Showers, mist and a risk of thunderstorms will dominate the first half of the day before steadier rain ends this afternoon. Conditions improve considerably tonight and Tuesday.
This morning while it feels warm, there is a mist in the ai