Thunder Bay – WEATHER – Thunder Bay starts Friday below freezing, but a spring rebound is on the way. Sunshine this morning will give way to increasing cloudiness, with west winds becoming gusty later in the day.

Its a morning start to put mittens on your kittens, at -5 it is a bit frigid on the old digits.

Today’s Weather Overview

Current Conditions

Observed at 7:00 AM EDT:

Condition: Partly cloudy
Temperature: -3.9°C
Wind Chill: -6
Wind: WSW 5 km/h
Humidity: 87%
Pressure: 100.8 kPa and falling
Visibility: 32 km

Today will be sunny early, with increasing cloudiness late this morning. Winds become west at 30 km/h, gusting to 50. High 14°C. UV index 4, or moderate.

Weekend Forecast

Tonight: Clearing late this evening. West wind 20 km/h becoming light. Low 1°C.

Saturday: Mainly cloudy with a 40% chance of flurries or rain showers, changing to rain showers or flurries in the morning. High 9°C.

Sunday: A mix of sun and cloud with a 30% chance of flurries or rain showers. High 9°C.

Looking Ahead

Next week brings gradual improvement, with highs near 12°C Monday, 14°C Tuesday, 15°C Wednesday, and 18°C Thursday.

Wardrobe Recommendations

Start with gloves and a warm jacket this morning, then switch to lighter layers by afternoon. Secure loose outdoor items as winds gust up to 50 km/h.

Summary

Thunder Bay weather for May 8, 2026: Partly cloudy and -4°C early, warming to 14°C with gusty west winds and weekend flurries or rain showers possible.