For this time of the year, Thunder Bay is experiencing slightly cooler temperatures, gently falling below the seasonal average.
According to the long-range forecast, temperatures are expected to be 16.9 °C which is -1.9 °C lower than the historical average.
Select a month and click on a day for more information:
Wednesday
Jul 1
17° / 12°
Thursday
Jul 2
21° / 13°
Friday
Jul 3
26° / 12°
Saturday
Jul 4
21° / 13°
Sunday
Jul 5
20° / 13°
Monday
Jul 6
19° / 12°
Tuesday
Jul 7
20° / 10°
Wednesday
Jul 8
18° / 11°
Thursday
Jul 9
21° / 11°
Friday
Jul 10
21° / 12°
Saturday
Jul 11
21° / 12°
Sunday
Jul 12
19° / 11°
Monday
Jul 13
21° / 13°
Tuesday
Jul 14
23° / 12°
Wednesday
Jul 15
20° / 13°
Thursday
Jul 16
21° / 12°
Friday
Jul 17
22° / 13°
Saturday
Jul 18
24° / 13°
Sunday
Jul 19
22° / 13°
Monday
Jul 20
21° / 12°
Tuesday
Jul 21
20° / 12°
Wednesday
Jul 22
21° / 12°
Thursday
Jul 23
21° / 13°
Friday
Jul 24
22° / 13°
Saturday
Jul 25
25° / 13°
Sunday
Jul 26
24° / 13°
Monday
Jul 27
23° / 15°
Tuesday
Jul 28
21° / 14°
Wednesday
Jul 29
22° / 14°
Thursday
Jul 30
22° / 12°
Friday
Jul 31
22° / 14°
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.