Mugginess Builds with Risk of Thunderstorms in Thunder Bay
THUNDER BAY – WEATHER REPORT – If the air feels thick this morning in Thunder Bay, you’re not imagining things. As of 6:00 AM EDT, it’s a muggy 17°C at Thunder Bay Airport, with an equally muggy dew point of 16.6°C and relative humidity at 97%—in short, your coffee isn’t the only thing steaming. Winds are currently from the east-southeast at 13 km/h, and visibility is sitting nicely at 24 kilometres, despite some lingering fog patches.
The barometric pressure is rising at 101.1 kPa, hinting at a bit of temporary stability—though the skies have other ideas.
Today: Thunder Potential and a Damp Finish
This Sunday will remain cloudy, with a 40 percent chance of showers and a risk of thunderstorms. Those fog patches will burn off as the morning progresses, but winds will increase, shifting to southeast at 20 km/h, gusting up to 40 km/h by late morning. Expect a high of 22°C, but the humidex will make it feel closer to 27°C. The UV index is at 4, which is moderate—but if the clouds part, don’t let your guard down.
Tonight: Fog Returns and Thunder May Linger
Sunday night remains unsettled, with a 40 percent chance of showers and another risk of thunderstorms. Fog patches will redevelop after sunset, reducing visibility again by the overnight hours. Winds from the southeast at 20 km/h gusting to 40 will ease to calm overnight. The low will be a mild 15°C, perfect for window fans but sticky enough to keep you reaching for a cold drink.
Monday: The Heat and Haze Return, Briefly
Monday kicks off cloudy with a 30 percent chance of showers and the continued risk of thunderstorms in the morning and early afternoon. Those fog patches will dissipate as the winds shift to the west at 30 km/h, gusting up to 50 km/h in the afternoon. Hold onto your hats, Thunder Bay! The mercury climbs to 28°C, but brace yourself—it’ll feel like a sweltering 35°C with the humidex. The UV index will be very high at 9, so don’t skip the sunscreen even if you’re only dashing out briefly.
Monday Night and Beyond
The skies clear out Monday night with a refreshing low of 13°C, followed by a mix of sun and cloud Tuesday and a pleasant high of 23°C. Looks like Mother Nature’s got us on the rinse-and-repeat cycle this week.
What to Wear:
Today’s weather calls for a light rain jacket and breathable layers. You’ll want quick-dry gear and shoes that can handle a puddle or two. Monday may be sleeveless weather, but pack a windbreaker—it’s going to get gusty.
Weather Trivia – Did You Know?
Thunder Bay holds the title of the sunniest city in Eastern Canada during summer, averaging over 300 hours of sunshine in July alone. While today doesn’t live up to that, just wait—bright skies are likely just around the corner!
