Thunder Bay Weekend Weather with Lake Superior West Marine Forecast

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Looking over Lake Superior
Looking over Lake Superior

Thunder Bay Weather Forecast

Thunder Bay will see mostly sunny skies today, with a high of 19°C. Winds will come from the southeast at 20 km/h in the afternoon, adding a light breeze to the clear conditions. The barometric pressure is steady at 102.5 kPa, indicating stable weather, while the humidity is around 68%, making for pleasant, breathable air. Tonight, expect partly cloudy skies with a low of 9°C. There’s a 30% chance of brief showers in the evening, but any rainfall will be light. Winds will calm down as the night progresses, becoming light and variable.

Weekend Outlook

Saturday will bring more sunshine, with a high of 24°C and light winds. It’s perfect for outdoor plans, with mild southeast breezes keeping the air fresh. Overnight, the temperature will dip to 9°C, but skies will remain mostly clear. Sunday continues the sunny trend, with temperatures peaking at 24°C during the day and falling to 8°C at night. Monday brings even warmer conditions, with a high of 25°C under clear skies and a low of 11°C. On Tuesday, a mix of sun and clouds will bring a slight chance of showers, but temperatures will still reach a warm 25°C.

Historical Weather

The average high for Thunder Bay on this day is 19°C, right in line with today’s forecast. The record high of 28.2°C was set in 1978, while the record low was -1.1°C in 1945.

Wardrobe Suggestions

Dress in light layers for the day, but bring along a jacket or sweater for the cooler evening temperatures, especially with lows dipping to 9°C tonight.

Marine Forecast for Lake Superior West

Winds on Lake Superior’s western region today will be from the north at 15 knots, diminishing to northwest at 10 knots by midday. Winds will shift west in the evening, increasing to 15 knots before easing back to northwest at 10 knots near midnight, and becoming calm by Sunday morning.

Waves will start at 0.5 to 1 meter, subsiding to less than 0.5 meters around noon. However, they’ll pick back up to 0.5 to 1 meter this evening, before subsiding overnight.

Monday will bring light winds, ideal for smooth sailing.

By Tuesday, expect light winds turning south at 15 knots, with Wednesday following a similar pattern.

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