Thunder Bay Consecutive 30 Degree Days
This page shows the record for the most days in a row in
Thunder Bay, Ontario where the
high temperature was
at least 30 °C, from 1941–2024.
Longest Streak: 5 Days
Between Aug 12–16, 2015, the daily high temperature in Thunder Bay was always at least 30 °C – a span of 5 days.
| # Days |
When |
| 5 |
Aug 12–16, 2015 |
| 4 |
Jul 2–5, 2021 |
| 4 |
Jul 29 – Aug 1, 2007 |
| 4 |
Jul 13–16, 2006 |
| 4 |
Aug 4–7, 2001 |
| 4 |
Jul 23–26, 1989 |
| 4 |
Jul 6–9, 1988 |
| 4 |
May 27–30, 1986 |
| 4 |
Jul 11–14, 1983 |
| 4 |
Jul 5–8, 1981 |
| 4 |
Jul 16–19, 1975 |
| 4 |
Aug 6–9, 1971 |
| 4 |
Jul 19–22, 1955 |
| 3 |
Jul 24–26, 2021 |
| 3 |
Jul 2–4, 2020 |
| 3 |
Jul 25–27, 2015 |
| 3 |
Jul 11–13, 2012 |
| 3 |
Jul 10–12, 2005 |
| 3 |
Aug 18–20, 2003 |
| 3 |
Jul 12–14, 1998 |