Cornwall Consecutive 25 Degree Days
This page shows the record for the most days in a row in
Cornwall, Ontario where the
high temperature was
at least 25 °C, from 1867–2024.
Longest Streak: 58 Days
Between Jun 27 – Aug 23, 1955, the daily high temperature in Cornwall was always at least 25 °C – a span of 58 days.
| # Days |
When |
| 58 |
Jun 27 – Aug 23, 1955 |
| 46 |
Jul 7 – Aug 21, 2018 |
| * 41 |
Jun 24 – Aug 10, 1868 |
| 40 |
Jun 25 – Aug 3, 2020 |
| * 37 |
Jul 1 – Aug 10, 2011 |
| 34 |
Jun 21 – Jul 24, 1975 |
| 33 |
Jul 16 – Aug 17, 1988 |
| 32 |
Jul 21 – Aug 21, 1973 |
| 31 |
Jul 1–31, 1952 |
| 30 |
Jul 7 – Aug 5, 1979 |
| 28 |
Jun 28 – Jul 25, 2012 |
| 28 |
Jul 12 – Aug 8, 1983 |
| 27 |
Jul 28 – Aug 23, 2001 |
| 27 |
Jul 14 – Aug 9, 1969 |
| 25 |
Jul 22 – Aug 15, 1877 |
| 24 |
Jul 20 – Aug 12, 2016 |
| * 24 |
Jul 29 – Aug 22, 2003 |
| 24 |
Jul 8–31, 1959 |
| 22 |
Jul 11 – Aug 1, 1999 |
| * 22 |
Jul 15 – Aug 6, 1989 |
Note: streaks marked with a (*) contain days with missing data