St. Catharines Consecutive 25 Degree Days
This page shows the record for the most days in a row in
St. Catharines, Ontario where the
high temperature was
at least 25 °C, from 1882–2024.
Longest Streak: 70 Days
Between Jun 10 – Aug 18, 1949, the daily high temperature in St. Catharines was always at least 25 °C – a span of 70 days.
| # Days |
When |
| 70 |
Jun 10 – Aug 18, 1949 |
| 42 |
Jun 27 – Aug 7, 1955 |
| 41 |
Jun 20 – Jul 30, 1921 |
| 34 |
Jul 2 – Aug 4, 1948 |
| 33 |
Jul 1 – Aug 2, 1991 |
| 33 |
Jul 9 – Aug 10, 1954 |
| 33 |
Jul 22 – Aug 23, 1938 |
| 31 |
Jul 21 – Aug 20, 1973 |
| 29 |
May 29 – Jun 26, 1919 |
| 27 |
Aug 2–28, 1947 |
| 23 |
Jun 27 – Jul 19, 1981 |
| 23 |
Jun 22 – Jul 14, 1966 |
| 23 |
Jun 22 – Jul 14, 1946 |
| 23 |
Jul 30 – Aug 21, 1939 |
| * 22 |
Jul 24 – Aug 15, 1988 |
| 21 |
Jul 16 – Aug 5, 1945 |
| 21 |
Jul 13 – Aug 2, 1918 |
| 20 |
Jul 1–20, 2020 |
| 20 |
Jun 28 – Jul 17, 2018 |
| 20 |
Jul 27 – Aug 15, 1980 |
Note: streaks marked with a (*) contain days with missing data