Northwestern Ontario Weather

Official weather conditions from Environment Canada.

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Current conditions

Thunder Bay

City of Thunder Bay

Rainshower

Rainshower
17.4°C

Updated: 2026-09-12T05:00:00Z

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Wind

2 km/h, gust 27 km/h

Humidity

100%

Pressure

100.6 kPa falling

Visibility

N/A

Forecast periods

Next forecast blocks

Tonight

Cloudy. 40 percent chance of showers early this evening. Showers beginning this evening. Risk of a thunderstorm this evening and overnight. Local amount 10 to 20 mm. Wind southwest 20 km/h gusting to 40 becoming light this evening. Low 16.

Temp: Low 16.

Precip: Local amount 10 to 20 mm.

Wind: SW, 20 km/h, gust 40 km/h

Saturday

Showers ending in the morning then mainly cloudy with 40 percent chance of showers. Risk of a thunderstorm early in the morning. Wind becoming west 30 km/h gusting to 50 in the morning. High 22. UV index 4 or moderate.

Temp: High 22.

Wind: W, 15 km/h

Saturday night

Mainly cloudy. Wind west 20 km/h gusting to 40 becoming light near midnight. Wind becoming west 20 after midnight. Low 7.

Temp: Low 7.

Wind: W, 20 km/h, gust 40 km/h

Sunday

A mix of sun and cloud with 30 percent chance of showers. High 19.

Temp: High 19.

Sunday night

Clear. Low plus 4.

Temp: Low plus 4.

Monday

A mix of sun and cloud with 30 percent chance of showers. High 18.

Temp: High 18.