Northwestern Ontario Weather

Official weather conditions from Environment Canada.

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Current conditions

Thunder Bay

City of Thunder Bay

Mainly Sunny

Mainly Sunny
25.9°C

Updated: 2026-07-28T22:00:00Z

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Wind

21 km/h, gust 30 km/h

Humidity

48%

Pressure

101.3 kPa falling

Visibility

N/A

Forecast periods

Next forecast blocks

Tonight

Partly cloudy. 30 percent chance of showers this evening. Fog patches developing overnight. Low 13.

Temp: Low 13.

Wind: S, 15 km/h

Wednesday

Sunny in the morning and early in the afternoon then a mix of sun and cloud with 30 percent chance of showers in the afternoon. Risk of a thunderstorm in the afternoon. Fog patches dissipating in the morning. High 27. Humidex 31. UV index 8 or very high.

Temp: High 27.

Wind: VR, 5 km/h

Wednesday night

Partly cloudy. 30 percent chance of showers in the evening with risk of a thunderstorm. Fog patches developing overnight. Low 14.

Temp: Low 14.

Wind: E, 10 km/h

Thursday

A mix of sun and cloud with 40 percent chance of showers. High 27.

Temp: High 27.

Thursday night

Cloudy. Low 17.

Temp: Low 17.

Friday

Cloudy with 60 percent chance of showers. High 22.

Temp: High 22.