Thunder Bay Weather: Sunny Skies with a Breezy Finish

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Looking over Lake Superior
Looking over Lake Superior

THUNDER BAY – Weather – Thunder Bay is enjoying a pleasant start to the day, with temperatures already reaching 25°C by mid-afternoon. The skies are mostly clear with just a few clouds here and there, and winds are light, coming from the southeast at 10 km/h. The air is dry and comfortable, making it a great day to be outdoors.

Tonight: As we move into the evening, expect the temperatures to drop to a cool 14°C overnight. The sky will remain mostly clear, with only a few clouds appearing late at night. Winds will be light, shifting to a calm, variable direction.

Tomorrow (Tuesday, August 20): Tuesday will continue the trend of sunny weather, with a high of 22°C expected. The day will start with a mix of sun and cloud, and as the day progresses, you can expect more sun to break through. Winds will remain light from the southeast, making for another comfortable day.

Looking Ahead:

  • Wednesday: The sunshine continues with a high of 24°C, making it a great mid-week break.
  • Thursday: Expect even warmer temperatures around 25°C with mostly sunny skies.

Historical Fact: On August 19th, Thunder Bay has seen temperatures soar to 35.0°C in 1955, while the lowest recorded temperature on this day was a chilly 1.9°C in 1997. Interestingly, the city received a record-breaking 87.1 mm of rain in 1973, making it a day to remember!

Wardrobe Tip: Today is a day for light clothing, with maybe a light jacket for the evening as temperatures cool down. Sunglasses are a must with the bright sun expected.

Weather Trivia: Did you know that Thunder Bay’s highest temperature on August 19th was a scorching 35.0°C back in 1955? Thankfully, today’s weather is much more moderate.

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