From Chilly Mornings to Steamy Highs: A Foggy Forecast with Stormy Surprises
THUNDER BAY – WEATHER – Grab your coffee and a hoodie – it’s a brisk 9°C at the Thunder Bay Airport this Friday morning. Humidity sits at a full 100%, and the wind is barely stirring from the north-northwest at 3 km/h. With the barometric pressure at 101.2 kPa and falling, we’re on track for an unsettled day ahead.
Friday: Cloud Cover and a Splash of Rain
It’s mostly cloudy this morning, with a 40% chance of showers lingering into midday. There’s also a risk of a thunderstorm, so don’t be fooled by the early calm. Expect a modest high of 18°C, and with the UV index reaching 7, any sunshine that peeks through will pack a punch.
Wardrobe advice: Layers are your best bet. Bring a light jacket for the cooler temps, but make sure to keep an umbrella or rain jacket handy too—Thunder Bay’s skies aren’t making any promises.
Friday Night: Foggy and Stormy Possibilities
As night falls, clouds stick around with a 30% chance of showers initially, ramping up to 70% after midnight. Thunderstorms could roll in overnight, and fog patches will develop late, turning Thunder Bay into a soft-focus film set. Temperatures will dip to a low of 10°C, so you might want to keep those windows just slightly cracked for fresh air—not an indoor rainstorm.
Saturday: Humid with Morning Storm Risk
Saturday begins on a damp note with a 70% chance of morning showers and possible thunderstorms. Fog patches will lift by mid-morning, making way for warmer air. The afternoon brings a high of 23°C, but the humidex will make it feel like 27°C. Sounds like beach weather, until the next shower rolls in…
Saturday night brings cloudy periods with a 30% chance of showers, and a low of 13°C.
Sunday and Beyond: Summer Sticks Around (Sort Of)
Sunday turns up the heat with a high of 28°C and another 40% chance of showers. Nightfall doesn’t offer much break, with continued cloud cover and a mild low of 16°C.
Monday is a bit more optimistic, with a mix of sun and cloud, a 30% chance of a passing shower, and a warm high of 25°C. Monday night clears out nicely, cooling to 12°C—perfect for stargazing or a bonfire, if the skies cooperate.
Weather Trivia – The Foggy Facts of Thunder Bay 🌫️
Did you know Thunder Bay can experience over 90 days of fog per year? Thanks to Lake Superior’s chilly influence, this city is a fog magnet—especially in spring and early summer. So if you’ve ever wondered why your morning view looks like a ghost story, now you know!
