Thunder Bay
10 day weather forecast for Thunder Bay
Wednesday, 5th August 2026, at 18:01
today
28° 10°
tomorrow
27° 11°
Friday
20° 14°
Saturday
24° 11°
Sunday
22° 10°
Monday
22° 10°
Tuesday
21° 14°
Seemore
Thunder Bay Weather Pages
Thunder Bay weather forecast
The weather forecast for Thunder Bay over the next 2 days indicates warm conditions with temperatures ranging from 27 °C to 28 °C.
Rain is expected from Friday until Saturday.
Wind speeds are expected to be breezy, averaging around 16 km/h.
On Friday, expect a change in weather with temperatures reaching 20°C, and moderate rain with a 80% chance, accumulating about 6.95mm.
Thunder Bay 14 days weather forecast
This weeks weather in Thunder Bay. Click on a date for detailed forecasts
Wed. 5
28°
10°
0 mm
Thu. 6
27°
11°
0 mm
Fri. 7
20°
14°
7 mm
Sat. 8
24°
11°
0.3 mm
Sun. 9
22°
10°
0.1 mm
Mon. 10
22°
10°
0 mm
Tue. 11
21°
14°
0 mm
Wed. 12
23°
12°
0 mm
Thu. 13
14°
12°
13.7 mm
Fri. 14
15°
12°
3.2 mm
Sat. 15
19°
12°
3 mm
Sun. 16
23°
11°
0 mm
Mon. 17
23°
12°
2.6 mm
Tue. 18
16°
12°
13.9 mm
Further Ahead
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Access Thunder Bay weather forecasts with a simple click. Select any date for comprehensive insights on temperature, rainfall, and wind conditions.
Thunder Bay long range weather forecast
30 day weather forecast for Thunder Bay
Important Notice
Our Thunder Bay long range weather forecast is based on historical data analysis rather than real-time forecasting models. While this provides a general outlook, weather conditions can change. We recommend checking the forecast closer to your planned date for the most current information.
Rain Forecast for the Next 14 Days in Thunder Bay
The chart displays the expected rainfall values (in mm) over the next 14 days in Thunder Bay, highlighting variations in precipitation levels for specific dates. ☔
Thunder Bay Wind Speed Forecast Chart
This chart illustrates the projected daily max wind speed (in km) in Thunder Bay over the next two weeks, providing insights into periods of increased or decreased wind activity. 🌀
Frequently asked questions about the weather in Thunder Bay
How warm is it in Thunder Bay over the next 14 days?
Over the next two weeks, temperatures in Thunder Bay are expected to range from around 10 °C on the coldest nights up to about 28 °C on the warmest days. Use this range to plan what to pack and wear.
Will it rain in Thunder Bay in the next two weeks?
Yes - rain is expected on about 8 of the next 14 days in Thunder Bay, with roughly 43.7 mm of rainfall in total. It is worth keeping an umbrella or raincoat handy.
How windy is it in Thunder Bay?
Maximum wind speeds in Thunder Bay are forecast to reach about 28 km/h at their peak over the next 14 days.
When is the best time to visit Thunder Bay?
For a month-by-month look at temperatures and rainfall, see our best time to visit Thunder Bay guide.
How accurate is the 14-day forecast for Thunder Bay?
Our Thunder Bay forecast uses leading meteorological models and is most reliable over the next few days. Long-range days beyond a week show general trends and can change, so check back closer to the date for updates.
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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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