Thunder Bay Weather and Lake Superior West Marine Forecast (September 19-22, 2024)

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Thunder Bay Sleeping Giant from Red River Road
Thunder Bay Sleeping Giant from Red River Road

Thunder Bay Weather:

Thursday, September 19, 2024
Expect sunny skies throughout the day with a pleasant high of 23°C. The night will turn cloudy with temperatures dipping to 11°C. It’s a perfect day for outdoor activities!

Friday, September 20, 2024
Clouds will dominate the sky, with a 40% chance of showers and a high of 21°C. Showers are likely to persist overnight, with a low of 11°C.

Saturday, September 21, 2024
The weather will remain cloudy, again with a 40% chance of showers. The high will reach 20°C, with a low of 12°C at night.

Sunday, September 22, 2024
Expect similar conditions, with cloudy skies and a 30% chance of showers. The high will be a cooler 18°C, with nighttime temperatures around 11°C.


Lake Superior West Marine Forecast:

For those navigating Western Lake Superior, conditions will remain manageable this week. Winds today will stay light at 10 knots, gradually increasing to 15 knots from the southwest by this evening. On Thursday, winds will rise slightly to 20 knots, and remain steady through Friday. Wave heights are expected to stay calm between 0.5 to 1 meter. However, conditions could become choppier toward the weekend as wind speeds increase slightly.


Wardrobe Tip: Light clothing is suitable for the daytime, but a rain jacket is advised for the evenings and over the weekend when showers are likely.

Trivia: Thunder Bay’s average temperature for this time of year is 17°C, making this week’s warmth a delightful bonus! Enjoy the sun while it lasts!

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