June 4, 2026: Thunder Bay Weather Focus — Showers and Thunderstorm Risk as Clouds Dominate Thursday

THUNDER BAY – WEATHER DESK – Thunder Bay starts Thursday with a cool, damp feel and a mainly cloudy forecast ahead. Showers are likely through the day and into tonight, with a risk of thunderstorms as the city moves through an unsettled early-June weather pattern.
Today’s Weather Overview
Current Conditions
At 7:00 AM EDT Thursday, June 4, 2026, Thunder Bay was sitting at 10.8°C. The reported condition was not observed, but the weather setup points to a cloudy and unsettled