Thunder Bay
October
Weather in Thunder Bay for October 2025
Your guide to Thunder Bay weather in October - trends and predictions
In general, the average temperature in Thunder Bay at the beginning of October is 16.6 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 6.9 °C by the end of October.
The climate of Thunder Bay in October is notably wet, with an average of 14 rainy days.
With an average of 2 snowy days, Thunder Bay enjoys a light touch of snow in October.
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15
Dry days
14
Rainy days
2
Snow days
10°/4°
Temperatures
17 km/h
Avg max wind
77 %
Avg humidity
Thunder Bay in October average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 1  16° | 2  22° | 3 20° | 4  18° | 5 15° | ||
| 6 11° | 7  14° | 8 11° | 9  10° | 10 11° | 11 13° | 12 11° |
| 13 11° | 14 7° | 15 11° | 16 13° | 17 13° | 18 12° | 19 11° |
| 20 15° | 21 12° | 22 13° | 23 9° | 24 11° | 25 11° | 26 8° |
| 27  6° | 28  7° | 29  6° | 30 6° | 31  4° |
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Temperatures trend during October in Thunder Bay
See the weather trend as well as the moving average line
October weather day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| 1 Oct. | Light drizzle | 16° /10° | 0.2 mm | 0 cm | |
| 2 Oct. | Fog | 22° /12° | 0 mm | 0 cm | |
| 3 Oct. | Mist | 20° /10° | 0.4 mm | 0 cm | |
| 4 Oct. | Patchy rain possible | 18° /8° | 0.1 mm | 0 cm | |
| 5 Oct. | Patchy rain possible | 15° /8° | 0.6 mm | 0 cm | |
| 6 Oct. | Patchy rain possible | 11° /5° | 5.5 mm | 0 cm | |
| 7 Oct. | Overcast | 14° /2° | 0 mm | 0 cm | |
| 8 Oct. | Patchy rain possible | 11° /2° | 0 mm | 0 cm | |
| 9 Oct. | Moderate snow | 10° /2° | 0.1 mm | 0.1 cm | |
| 10 Oct. | Patchy rain possible | 11° /4° | 0 mm | 0 cm | |
| 11 Oct. | Patchy rain possible | 13° /6° | 0.1 mm | 0 cm | |
| 12 Oct. | Patchy rain possible | 11° /4° | 0 mm | 0 cm | |
| 13 Oct. | Patchy rain possible | 11° /6° | 0.2 mm | 0 cm | |
| 14 Oct. | Patchy rain possible | 7° /3° | 0.2 mm | 0 cm | |
| 15 Oct. | Overcast | 11° /1° | 0 mm | 0 cm | |
| 16 Oct. | Overcast | 13° /2° | 0 mm | 0 cm | |
| 17 Oct. | Overcast | 13° /4° | 0 mm | 0 cm | |
| 18 Oct. | Light drizzle | 12° /7° | 4.1 mm | 0 cm | |
| 19 Oct. | Light rain shower | 11° /7° | 8.2 mm | 0 cm | |
| 20 Oct. | Overcast | 15° /6° | 5.5 mm | 0 cm | |
| 21 Oct. | Light drizzle | 12° /6° | 1.2 mm | 0 cm | |
| 22 Oct. | Overcast | 13° /4° | 1.8 mm | 0 cm | |
| 23 Oct. | Light drizzle | 9° /4° | 0.8 mm | 0 cm | |
| 24 Oct. | Fog | 11° /5° | 2.7 mm | 0 cm | |
| 25 Oct. | Patchy rain possible | 11° /5° | 5.4 mm | 0 cm | |
| 26 Oct. | Light rain | 8° /1° | 2.6 mm | 0 cm | |
| 27 Oct. | Moderate or heavy sleet | 6° /1° | 7.8 mm | 0 cm | |
| 28 Oct. | Light freezing rain | 7° /1° | 0 mm | 0 cm | |
| 29 Oct. | Light snow | 6° /2° | 0 mm | 0 cm | |
| 30 Oct. | Light freezing rain | 6° /0° | 6.2 mm | 0 cm | |
| 31 Oct. | Cloudy | 4° /-2° | 0 mm | 0 cm | |
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Important Notice
Our weather forecast for Thunder Bay in October is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Thunder Bay forecast closer to your planned date for the most up-to-date weather information.
Thunder Bay in October - FAQ
What are the expected maximum and minimum temperatures in Thunder Bay during October?
Prepare for cooler days with highs just around 10° and colder nights, dipping below 4°.
How much rainfall should be expected in Thunder Bay during October?
Moderate rainfall is anticipated in Thunder Bay during October, with a total of 55.1 mm spread over approximately 14 days. Considering plans for rainy days is advisable.
Is snowfall common in Thunder Bay during October?
Thunder Bay experiences an average snowfall of 0.2 cm during October, occurring over 2 days, which may interest winter sports enthusiasts.
What are the typical wind conditions in Thunder Bay during October?
The average wind speed in Thunder Bay during October is 17 km/h, suggesting breezy to windy conditions, depending on your activities.
October rainfall patterns in Thunder Bay
Explore the daily rainfall trends and prepare for Thunder Bays October weather 💧
October snowfall in Thunder Bay
Track daily snowfall levels and discover Thunder Bay’s snowy potential this October ❄️
UV exposure in Thunder Bay during October
Stay informed about UV levels for safe outdoor activities throughout the month of October ☀️
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