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Canada weather

Weather in Thunder Bay for October 2025

Your guide to Thunder Bay weather in October - trends and predictions

    Temperatures

  • Until now, October 2025 in Thunder Bay has been nearly identical to the historical average, with a temperature of 13 °C (showing only a slight deviation of 0.4 °C).

  • The forecast for the next days in Thunder Bay predicts a temperature of 4.1 °C, which is cooler than the historical average.

  • In general, the average temperature in Thunder Bay at the beginning of October is 17.7 °C. As the month progressed, temperatures tended to significantly cool down, reaching an average of 7.9 °C by the end of October.

    • Rain 🌧️

  • The climate of Thunder Bay in October is notably wet, with an average of 11 rainy days, and a total of 53.7 mm of precipitation.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
20
Dry days
Average rainy days
11
Rainy days
Average snowy days
0
Snow days
Average temperatures
11°/5°
Temperatures
Average wind speed
18 km/h
Avg max wind
Average humidity
71 %
Avg humidity

Thunder Bay Weather October

Move between months or click on a day
September
November
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Light drizzle
16°
2
Fog
22°
3
Cloudy
21°
4
Patchy rain possible
20°
5
Patchy rain possible
18°
6
Patchy rain possible
13°
7
Overcast
14°
8
Sunny
12°
9
Moderate snow
12°
10
Patchy rain possible
12°
11
Patchy rain possible
13°
12
Overcast
12°
13
Patchy rain possible
13°
14
Overcast
8°
15
Overcast
12°
16
Overcast
12°
17
Overcast
14°
18
Light drizzle
13°
19
Light rain shower
11°
20
Overcast
13°
21
Light drizzle
11°
22
Overcast
11°
23
Overcast
8°
24
Fog
9°
25
Patchy rain possible
10°
26
Light rain
10°
27
Moderate or heavy sleet
8°
28
Overcast
7°
29
Light snow
6°
30
Partly cloudy
7°
31
Overcast
7°

Temperatures trend during October in Thunder Bay

See the weather trend as well as the moving average line

October weather in Thunder Bay day by day

Click on a date for more information
September November
Date Weather Temperatures Rain Snow More
1 Oct. Light drizzle
Light drizzle
 16° /10° 0.2 mm 0 cm
2 Oct. Fog
Fog
 22° /11° 0.4 mm 0 cm
3 Oct. Cloudy
Cloudy
 21° /11° 0.3 mm 0 cm
4 Oct. Patchy rain possible
Patchy rain possible
 20° /9° 0.1 mm 0 cm
5 Oct. Patchy rain possible
Patchy rain possible
 18° /10° 0.4 mm 0 cm
6 Oct. Patchy rain possible
Patchy rain possible
 13° /6° 3.7 mm 0 cm
7 Oct. Overcast
Overcast
 14° /3° 0 mm 0 cm
8 Oct. Sunny
Sunny
 12° /2° 0 mm 0 cm
9 Oct. Moderate snow
Moderate snow
 12° /2° 0.1 mm 0.1 cm
10 Oct. Patchy rain possible
Patchy rain possible
 12° /6° 0 mm 0 cm
11 Oct. Patchy rain possible
Patchy rain possible
 13° /5° 0.1 mm 0 cm
12 Oct. Overcast
Overcast
 12° /6° 0 mm 0 cm
13 Oct. Patchy rain possible
Patchy rain possible
 13° /7° 8.1 mm 0 cm
14 Oct. Overcast
Overcast
 8° /2° 0.1 mm 0 cm
15 Oct. Overcast
Overcast
 12° /3° 0 mm 0 cm
16 Oct. Overcast
Overcast
 12° /2° 0 mm 0 cm
17 Oct. Overcast
Overcast
 14° /6° 0 mm 0 cm
18 Oct. Light drizzle
Light drizzle
 13° /8° 2.7 mm 0 cm
19 Oct. Light rain shower
Light rain shower
 11° /7° 6.6 mm 0 cm
20 Oct. Overcast
Overcast
 13° /5° 3.6 mm 0 cm
21 Oct. Light drizzle
Light drizzle
 11° /5° 32.2 mm 0 cm
22 Oct. Overcast
Overcast
 11° /4° 1.2 mm 0 cm
23 Oct. Overcast
Overcast
 8° /3° 0.5 mm 0 cm
24 Oct. Fog
Fog
 9° /3° 1.8 mm 0 cm
25 Oct. Patchy rain possible
Patchy rain possible
 10° /4° 3.6 mm 0 cm
26 Oct. Light rain
Light rain
 10° /3° 1.7 mm 0 cm
27 Oct. Moderate or heavy sleet
Moderate or heavy sleet
 8° /2° 5.2 mm 0 cm
28 Oct. Overcast
Overcast
 7° /2° 0 mm 0 cm
29 Oct. Light snow
Light snow
 6° /2° 0 mm 0 cm
30 Oct. Partly cloudy
Partly cloudy
 7° /4° 0 mm 0 cm
31 Oct. Overcast
Overcast
 7° /3° 0 mm 0 cm
Next
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.
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Thunder Bay in October - FAQ

What are the expected maximum and minimum temperatures in Thunder Bay during October?
During October, expect a variety of temperatures with highs around 11° and lows near 5°, suitable for diverse activities and preferences.
How much rainfall should be expected in Thunder Bay during October?
Moderate rainfall is anticipated in Thunder Bay during October, with a total of 53.7 mm spread over approximately 11 days. Considering plans for rainy days is advisable.
Will it snow in Thunder Bay in October 2025?
Thunder Bay typically sees 0.08 cm of snowfall during October.
What are the typical wind conditions in Thunder Bay during October?
The average wind speed in Thunder Bay during October is 18 km/h, suggesting breezy to windy conditions, depending on your activities.

Thunder Bay snow forecast October 2025

Track daily snowfall levels and discover Thunder Bay’s snowy potential this October ❄️

October rainfall patterns in Thunder Bay

Explore the daily rainfall trends and prepare for Thunder Bays October weather 💧

UV exposure in Thunder Bay during October

Stay informed about UV levels for safe outdoor activities throughout the month of October ☀️

Quick links

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Location coordinates Where is Thunder Bay?

Get accurate weather forecasts for Thunder Bay, located at latitude 48.382 and longitude -89.25. Stay updated with localized weather information tailored for Thunder Bay.

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