THUNDER BAY – A fresh and mainly sunny morning is on tap for Thunder Bay today, but conditions will evolve as the day progresses. Gusty west winds and a 30% chance of afternoon showers are expected, along with local smoke developing overnight. With warm highs and a high UV index, it’s a day to enjoy — but stay prepared for changes.

You can also take in a Border Cats game today. The Border Cats will conclude their two-game series against the Huskies with a special Wednesday school day game, with first pitch scheduled for 11:05 a.m. Tickers are on sale and available to the general public. Makaio Cisneros (Pensacola State College) is the expected starting pitcher for Thunder Bay.

Today’s Weather Overview

Current Conditions

As of 7:00 AM EDT, Thunder Bay is experiencing mainly sunny skies with a temperature of 7.3°C and relative humidity at 96%, giving the air a slightly damp feel. The dew point is 6.7°C, suggesting calm and cool conditions to start the day. Winds are light from the west-southwest at 8 km/h, and visibility is excellent at 32 kilometres.

The barometric pressure is 101.2 kPa and rising, indicating fair and stable weather this morning. However, conditions will change by midday.

Expect sunshine this morning, shifting to a mix of sun and cloud with a 30% chance of showers this afternoon. Winds will increase significantly, becoming west at 30 km/h and gusting up to 50 km/h by late morning. The high will reach 23°C, and the UV index is 7 (high) — sun protection is strongly advised.

Tomorrow’s Forecast

Expected Conditions

Thursday, June 5: The day will clear in the morning, but local smoke is expected to linger, potentially reducing air quality. Winds will again pick up, becoming northwest at 20 km/h, gusting to 40 by afternoon. The high will be 23°C and the UV index remains high at 7.

Thursday Night: Expect clear skies with an overnight low of 8°C.

Friday, June 6: A mix of sun and cloud continues, with a 30% chance of showers and a slightly cooler high of 19°C.

Friday Night: Cloudy periods persist, with a 30% chance of showers and a low of 7°C.

Wardrobe Recommendations

• Today: Start with a light jacket for the cool morning, but be ready to switch to breathable, sun-safe clothing by midday. Use sunscreen and wear a hat or sunglasses, especially during the afternoon.

• Thursday: Dress in layers to accommodate the morning chill and afternoon warmth. If smoke persists, those with respiratory sensitivities may want to limit outdoor activity or wear a well-fitting mask.

• Friday: Add a light rain jacket to your outfit, as the chance of showers increases again.

Weather Trivia

Did you know?
Thunder Bay often experiences strong thermal gradients between Lake Superior and inland areas. These gradients, especially in spring and early summer, can fuel sudden wind shifts and localized gusts — like the ones forecast today — even when skies appear clear.