Number of Days of 25 °C in Thunder Bay by Year

This page contains a list of the number of days in each year that the high temperature equaled or exceeded 25 degrees Celsius in Thunder Bay, Ontario, between 1941 and 2024.

Also see:

Which year had the most 25° days?

Based on NOAA records, the year 1955 holds the record for the most 25 °C days in Thunder Bay history. There were 60 days with a high temperature of at least 25 degrees that year.

How many so far this year (2024)?

It has not reached 25 degrees Celsius in Thunder Bay so far in 2024. As of April 9, the highest temperature this year is 61 °F.

The last time it reached at least 25° C was October 3, 2023.

Years marked with a gold background have more than 5% incomplete data
Click column headers to sort

Year	Rank	Days >= 25 °C
2024	84	0
2023	17	46
2022	53	33
2021	15	47
2020	5	55
2019	29	42
2018	22	44
2017	63	29
2016	17	46
2015	29	42
2014	66	28
2013	49	34
2012	11	50
2011	8	51
2010	13	48
2009	74	25
2008	43	36
2007	32	41
2006	3	57
2005	25	43
2004	79	22
2003	6	52
2002	6	52
2001	8	51
2000	63	29
1999	22	44
1998	2	58
1997	43	36
1996	49	34
1995	17	46
1994	66	28
1993	82	15
1992	81	17
1991	21	45
1990	49	34
1989	53	33
1988	25	43
1987	37	37
1986	70	27
1985	74	25
1984	33	40
1983	8	51
1982	79	22
1981	37	37
1980	33	40
1979	53	33
1978	37	37
1977	77	23
1976	3	57
1975	35	39
1974	53	33
1973	63	29
1972	49	34
1971	25	43
1970	15	47
1969	37	37
1968	77	23
1967	46	35
1966	17	46
1965	74	25
1964	57	32
1963	60	31
1962	70	27
1961	36	38
1960	46	35
1959	37	37
1958	57	32
1957	66	28
1956	70	27
1955	1	60
1954	57	32
1953	12	49
1952	43	36
1951	61	30
1950	70	27
1949	25	43
1948	13	48
1947	46	35
1946	37	37
1945	61	30
1944	22	44
1943	29	42
1942	66	28
1941	83	12

Weather Station Details

Years	Station	Coordinates
2004–2024	Thunder Bay CS	location
1941–2003	Thunder Bay A	location