May 3, 2026: Thunder Bay Weather – A Good Morning to Get Moving Early

 Thunder Bay weather for May 3, 2026: Partly cloudy early, high 15°C, gusty west winds, and a chance of showers today and tonight

THUNDER BAY – WEATHER DESK – Thunder Bay is starting Sunday with partly cloudy skies, calm winds, and a mild early-May feel.

It is a good day to be up and at it early, as winds will increase later this morning and showers become more likely tonight.

Residents have commented on the sighting on Saturday of a bright yellow object in the sky and the colour of the sky being blue. After what has seemed like weeks of clouds, seeing blue skies and the sun have been a long overdue experience.

Current Conditions

Observed at Thunder Bay Airport at 6:00 AM EDT:

Condition: Partly cloudy
Temperature: 2.6°C
Wind: Calm
Humidity: 77%
Pressure: 100.5 kPa and falling
Visibility: 24 km

Today brings a mix of sun and cloud with a 40% chance of showers. Winds become west at 30 km/h, gusting to 50, late this morning. High 15°C. UV index 5, or moderate.

Extended Weather Forecast

Expected Conditions

Tonight: Increasing cloudiness early this evening, with a 60% chance of showers overnight. West winds gusting to 50 km/h ease this evening. Low 4°C.

Monday, May 4: Showers ending near noon, then a mix of sun and cloud with a 60% chance of showers. West wind 20 km/h, gusting to 40. High 14°C.

Monday Night: Cloudy periods with a 40% chance of rain showers or flurries. Low -1°C.

Wardrobe Recommendations

Start with layers and a light jacket. Sunglasses may be useful early, but keep a rain shell handy. Secure lightweight outdoor items before the gusty west winds arrive.

Weather Trivia

Thunder Bay’s spring winds often strengthen quickly as daytime heating mixes air near the surface, especially when pressure is falling ahead of unsettled weather.

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