🌤️ Thunder Bay Detailed Weather Report – July 12, 2025

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Image Michael Hull: Federal Welland at Current River Thunder Bay on Lake Superior
Image Michael Hull: Federal Welland at Current River Thunder Bay on Lake Superior

Thunder Bay Weather – It’s a cool, mostly cloudy Saturday in Thunder Bay, with Lake Superior’s influence holding morning temperatures in check. While fog dissipates, cloud cover prevails, setting the stage for showers and potential thunderstorms by midday.

🕒 Current Conditions (7 AM EDT – Thunder Bay Airport)

  • Temperature: 15.6 °C

  • Humidity: 98%

  • Wind: WNW at 4 km/h

  • Pressure: 100.8 kPa (falling)

  • Visibility: 24 km

  • Sky: Mostly cloudy, some fog patches

🌦️ Forecast for Today

Expect mainly cloudy skies with a 70% chance of showers near noon and the risk of thunderstorms. Daytime highs will reach 20 °C with a UV index of 6—sun protection is still important despite the cloud cover.

đź§Ą Wardrobe Advice

Carry a rain jacket or umbrella—ideal for unpredictable afternoon conditions. Opt for layers to shift between the cool morning and milder noon.

📚 Weather Trivia

Lake Superior can reduce summer morning temps by up to 8–10 °C, offering a natural chill even in mid-July!

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