Thunder Bay is set to experience classic fall weather over the next few days, with a mix of rain, cooler temperatures, and some sunny breaks. Whether you’re heading out for a stroll along the waterfront or setting sail on Lake Superior, here’s a detailed look at what’s in store for Thunder Bay and the western portion of Lake Superior.
Thunder Bay Weather Forecast
September 29:
A rainy day is in store, with showers expected throughout the morning and into the afternoon. The high will reach 11°C, but a brisk northwest wind at 20 km/h will make it feel a bit cooler. As the evening progresses, the rain will begin to ease, and the temperature will dip to a chilly 3°C overnight. Humidity will be high at 85%, with a barometric pressure of 100.6 kPa, reflecting the unstable and damp conditions.
September 30:
Clouds will linger in the morning, with a chance of some light, scattered showers. The day will gradually clear up by the afternoon. The high will reach 9°C, with a low of 2°C overnight. Winds will remain light from the northwest at 10 km/h, and humidity will decrease to 70%, making the day feel cooler and more refreshing.
October 1:
Sunshine returns, with clear skies and a high of 12°C. A light southwest breeze at 10 km/h will help keep things calm and comfortable. The temperature will drop to 3°C overnight. Barometric pressure will rise to 101.4 kPa, signaling stable, pleasant weather for the day.
Wardrobe Suggestions:
For Thunder Bay, make sure to wear a waterproof jacket and sturdy shoes on September 29 to keep dry during the rain. As the skies clear up, you’ll want layers like a warm sweater and scarf to stay comfortable in the cooler air. Mornings and evenings will be particularly brisk, so consider a hat and gloves for extra warmth.
Marine Forecast for Lake Superior West
September 29:
Expect unsettled conditions on the lake with northwest winds at 20 km/h, gusting up to 30 km/h, making for choppy waters. Waves will reach 1 to 1.5 metres in height, so smaller vessels should proceed with caution. Showers are expected throughout the day, which will reduce visibility at times. Water temperatures are cooling, currently sitting at around 12°C.
September 30:
Winds will calm down to around 10 km/h from the northwest, and the skies will start to clear. Waves will subside to about half a metre, making for a smoother ride. It’s a better day for boating, though the cool air and water temperatures will still make it feel chilly on the lake.
October 1:
Ideal conditions for a day out on the water! Winds will be light from the southwest at 10 km/h, and waves will stay below half a metre. With plenty of sunshine, visibility will be excellent, but make sure to dress warmly as the cool fall temperatures will persist.
Wardrobe Suggestions for the Lake:
Dressing warmly is key on Lake Superior in the fall, as temperatures can feel much cooler on the water. Waterproof and windproof gear is essential, along with warm layers like a fleece jacket. Don’t forget gloves and a hat to keep you comfortable, especially on September 29 when winds will be stronger and rain is expected.
Weather Trivia for Thunder Bay:
Thunder Bay’s highest temperature recorded on September 29 was a warm 25°C back in 1952. The coldest temperature for this day was -4°C in 1965, showcasing the wide range of fall weather in the region!
