The long-range forecast for Thunder Bay reveals lower temperatures than usual for this time of the year, dipping to 10°. In the coming days, the forecasted temperatures are expected to be on average -2.9 °F lower than the average of the last few years.
Select a month and click on a day for more information
Thursday
Oct 1
13° / 9°
Friday
Oct 2
14° / 10°
Saturday
Oct 3
15° / 8°
Sunday
Oct 4
16° / 7°
Monday
Oct 5
15° / 8°
Tuesday
Oct 6
13° / 6°
Wednesday
Oct 7
12° / 4°
Thursday
Oct 8
11° / 4°
Friday
Oct 9
13° / 4°
Saturday
Oct 10
12° / 6°
Sunday
Oct 11
13° / 5°
Monday
Oct 12
11° / 6°
Tuesday
Oct 13
10° / 5°
Wednesday
Oct 14
8° / 3°
Thursday
Oct 15
8° / 2°
Friday
Oct 16
8° / 2°
Saturday
Oct 17
9° / 2°
Sunday
Oct 18
10° / 4°
Monday
Oct 19
9° / 5°
Tuesday
Oct 20
9° / 2°
Wednesday
Oct 21
9° / 4°
Thursday
Oct 22
7° / 3°
Friday
Oct 23
7° / 2°
Saturday
Oct 24
7° / 2°
Sunday
Oct 25
7° / 2°
Monday
Oct 26
6° / 1°
Tuesday
Oct 27
6° / 1°
Wednesday
Oct 28
6° / 2°
Thursday
Oct 29
6° / 2°
Friday
Oct 30
5° / 0°
Saturday
Oct 31
5° / -2°
Thunder Bay 30 days weather forecast
Check out our estimated 30 days weather forecast for Thunder Bay, this data is based on the average weather in Thunder Bay in the last few years.
For a more accurate and detailed forecast, check out the 14 day weather for Thunder Bay next to the desired date.
Weather in Thunder Bay for the next 30 days
October
Click on a day for an hourly weather forecast
Thunder Bay long range weather forecast - FAQ
Do you provide 30 days weather forecast for Thunder Bay?
You can see the next 30 weather forecast for Thunder Bay at the top of the page, the next 14 days (from today) are more accurate, while the other is based on average of previous years.
Can I see the weather forecast for a particular date in Thunder Bay?
Sure, you can select the date from the calendar above to view the forecast in Thunder Bay on that date.
How accurate is the long-range weather forecast for Thunder Bay?
Our long-range weather forecast for Thunder Bay is provided by using statistics from previous years. Although we cannot predict the weather months in advance, we can see an average.
Can I see a long-range weather forecast for different countries?
Yes, we provide a 14 day weather forecast and a long-range weather forecast for different countries and cities. You can search for a location in the search box at the top of the page.
More about the weather in Thunder Bay