Thunder Bay Weather Outlook – Thursday, October 9, 2025

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Prince Arthur's Landing - Marina Park
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Frosty start, but sunshine and milder temperatures return before a showery Thanksgiving weekend

Thunder Bay – Weather – Thunder Bay begins the day under clear skies and a deep autumn chill, with temperatures hovering near –2°C and a wind chill of –5°C. High pressure continues to dominate early today, but a change is coming — warmer air and cloud cover will move in later, followed by a few showers overnight and into Friday.

The Thanksgiving weekend looks generally mild, though unsettled at times, with scattered rain showers.

Current Conditions (as of 7:00 AM EDT – Thunder Bay Airport)

  • Temperature: –1.8°C

  • Dew Point: –1.9°C

  • Humidity: 99%

  • Wind: WSW 8 km/h

  • Wind Chill: –5°C

  • Pressure: 103.2 kPa (rising)

  • Condition: Clear

  • Visibility: 24 km

Thursday, October 9 Forecast

  • Morning: Sunny but cold, with frost across the region.

  • Afternoon: Winds shift to the south bringing in milder air.

  • Wind: Becoming south 20 km/h late this morning.

  • High: 16°C

  • UV Index: 3 (moderate)

Tonight

  • Clouds increasing, with showers developing this evening.

  • Wind: South 20 km/h, becoming light early this evening.

  • Low: 10°C

🍂 5-Day Weather Summary

Day Conditions High / Low Chance of Rain Wind
Thu 9 Sunny, increasing clouds 16°C / 10°C 40% (night) S 20 km/h
Fri 10 Showers, breezy NW winds 14°C / 9°C 70% (AM) NW 20 km/h
Sat 11 Cloudy, calm 14°C / 10°C 20% Light
Sun 12 Mix sun/cloud, showers PM 18°C / 10°C 40–60% SW 20 km/h
Mon 13 Cloudy, scattered showers 16°C / +3°C 30–40% Light NW

Friday, October 10

  • Showers throughout the day, tapering off by late afternoon.

  • Wind: Becoming northwest 20 km/h late in the morning.

  • High: 14°C

  • UV Index: 1 (low)

Friday Night:

  • Cloudy with a 30% chance of lingering showers.

  • Low: 9°C

☁️ Saturday, October 11

  • Mostly cloudy, cooler, and calm.

  • High: 14°C

  • Night: Cloudy periods.

  • Low: 10°C

🌤️ Sunday, October 12

  • A mix of sun and cloud with a 40% chance of showers.

  • High: 18°C

  • Night: Cloudy, with a 60% chance of showers.

  • Low: 10°C

☁️ Monday, October 13 – Thanksgiving Day

  • Cloudy, with a 40% chance of showers.

  • High: 16°C

  • Night: Cloudy periods, with a 30% chance of showers.

  • Low: +3°C

Weather Highlights

  • This Morning:

    • A cold and frosty start — thick frost on cars and lawns, wind chill near –5°C.

    • Bundle up if heading out early.

  • This Afternoon:

    • Sunny and pleasant, a perfect fall day to enjoy outdoor work or travel.

  • Tonight and Friday:

    • Showers move in overnight, continuing into Friday morning before tapering off.

    • Winds turn northwest Friday as cooler air returns.

  • Thanksgiving Weekend:

    • Generally mild and seasonable, with on-and-off showers Sunday and Monday.

    • No severe weather expected — a mix of clouds, brief rain, and comfortable highs near 15–18°C.

Thanksgiving Weather Outlook

Thunder Bay residents can expect a comfortable and seasonable long weekend, perfect for travel and gatherings. Saturday will be the best day for outdoor activities, while Sunday and Monday bring a few showers and clouds but remain mild and manageable for family events.

Bundle up this morning and enjoy the sunshine before rain returns tonight. Thanksgiving weekend will be mild, with just a few showers to dodge. – NetNewsLedger Weather Desk

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