June 20, 2026: Thunder Bay Weather Focus — Showers, Cool Air, and a Thunderstorm Risk

Thunder Bay weather for June 20, 2026: Mostly cloudy and cool at 10.5°C, with showers, a thunderstorm risk, a high of 19°C, and more unsettled weather into Sunday and Monday.
THUNDER BAY – WEATHER – Thunder Bay starts this Saturday under mostly cloudy skies with a damp, cool feel in the air. As of 7:00 AM EDT, the temperature is 10.5°C, with humidity sitting high at 92 percent and a light southwest wind at 8 km/h. The barometric pressure is 101.2 kPa and falling, pointing