Thunder Bay remains under a Yellow Rainfall Warning this morning as rain, at times heavy, continues before tapering off later today. Environment Canada lists the impact level as High, with moderate forecast confidence.

Today’s Weather Overview

Current Conditions

At 7:00 AM EDT, Thunder Bay reported light rain and a temperature of 5.0°C.

Winds were from the WNW at 22 km/h, gusting to 38 km/h. Humidity was 90%, the dew point was 3.5°C, pressure was 99.8 kPa and steady, and visibility was 24 km.

Rainfall Warning Continues

Environment Canada says rainfall totals of 25 to 40 mm are expected before the system exits this morning. Frozen or nearly saturated ground has a reduced ability to absorb the rainfall.

Localized flooding is possible, and some roads may become impassable. Drivers should avoid flooded roads and stay away from rivers, creeks, and culverts.

Extended Forecast

Expected Conditions

Today’s rain will end this morning, followed by cloudy skies with a 40 percent chance of rain showers or flurries. Skies should clear this afternoon. Northwest winds will strengthen to 40 km/h, gusting to 60, with a high of 9°C.

Tonight brings increasing cloudiness early in the evening. Northwest winds of 30 km/h, gusting to 50 will become light later tonight. The low will fall to -3°C.

Wednesday will be mainly cloudy with light winds and a high of 6°C. The morning wind chill may feel near -7°C.

Wardrobe Recommendations

Wear a waterproof jacket and water-resistant footwear this morning. By afternoon, the bigger concern becomes gusty northwest winds, so dress in warm layers. Drivers should watch for standing water, washouts, and debris on roads.

Weather Trivia

After heavy rain, strong northwest winds often follow the departing system in Thunder Bay, helping dry roads but also making the air feel much colder near Lake Superior.