June 6, 2026: Thunder Bay Weather Forecast — Mostly Cloudy Start with Warmer Afternoon Ahead

THUNDER BAY – WEATHER – Saturday morning is starting on a mild and humid note in Thunder Bay, with mostly cloudy skies and lingering fog patches expected to dissipate through the morning. The day will remain mainly cloudy, but temperatures are set to climb nicely, bringing a warm early June afternoon with a high of 25°C and a humidex near 28.
Its a great day for a barbecue, and remember the Border Cats first pitch is at 6:35 at Port Arthur Stadium.
At noon at Waverly Park there i