Wet Start to the Week in Thunder Bay as Showers and Thunderstorms Loom

THUNDER BAY – A damp and grey morning greets Thunder Bay residents, with light drizzle reducing visibility and a cool 9°C start to the day. A 70 percent chance of showers and a risk of thunderstorms this afternoon mark an unsettled weather pattern, which is expected to persist into the evening. While skies may clear slightly midweek, the threat of showers continues.

Today’s Weather Overview

Current Conditions (as of 7:15 AM EDT)

• Temperature: 9.2°C

• Humidity: 100%

• Dew Point: 9.2°C

• Wind: ENE at 10 km/h

• Pressure: 100.1 kPa (falling)

• Visibility: 1.2 km (limited due to drizzle)

Monday Forecast

• Sky: Overcast throughout the day

• Precipitation: 70% chance of showers

• Risk: Thunderstorms possible this afternoon

• High: 17°C

• UV Index: 4 (moderate)

Tonight

• Conditions: Mostly cloudy with a continued 70% chance of showers

• Thunderstorm Risk: Continues into the evening

• Low: 10°C

Tomorrow’s Forecast

Tuesday, June 10

• Sky: A mix of sun and cloud

• Smoke: Local smoke may affect air quality

• Precipitation: 40% chance of showers

• High: 21°C

• UV Index: 7 (high)

Tuesday Night

• Cloudy periods with a 40% chance of showers

• Low: 10°C

Midweek Outlook

• Wednesday, June 11: Mix of sun and cloud with a 60% chance of showers. High of 22°C

• Wednesday Night: Clear, low of 8°C

Wardrobe Recommendations

• Today: Waterproof jacket and footwear are essential. Bring an umbrella if heading out this afternoon.

• Tuesday: Light layers are suitable, but be mindful of potential smoke—consider a mask for outdoor activities.

• Wednesday: Be prepared for passing showers. A light, water-resistant outer layer will serve well.

Weather Trivia

Thunder Bay’s Foggy Legacy
Thunder Bay is no stranger to reduced visibility. The city’s unique location on the northwestern shore of Lake Superior contributes to frequent fog and drizzle in transitional seasons. June is particularly prone to mist and marine layers, especially when warm air overrides the cold lake surface—resulting in scenes like today’s.