Number of Days of 30 °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 30 degrees Celsius in Thunder Bay, Ontario, between 1941 and 2024.

Also see:

Which year had the most 30° days?

Based on NOAA records, the year 1955 holds the record for the most 30 °C days in Thunder Bay history. There were 19 days with a high temperature of at least 30 degrees that year.

How many so far this year (2024)?

It has not reached 30 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 30° C was October 2, 2023.

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

Year	Rank	Days >= 30 °C
2024	80	0
2023	30	7
2022	38	6
2021	7	13
2020	30	7
2019	80	0
2018	30	7
2017	65	2
2016	48	5
2015	10	11
2014	65	2
2013	38	6
2012	14	9
2011	14	9
2010	38	6
2009	61	3
2008	65	2
2007	53	4
2006	30	7
2005	9	12
2004	73	1
2003	20	8
2002	4	16
2001	7	13
2000	65	2
1999	20	8
1998	38	6
1997	53	4
1996	73	1
1995	30	7
1994	80	0
1993	65	2
1992	65	2
1991	10	11
1990	61	3
1989	20	8
1988	5	15
1987	14	9
1986	48	5
1985	73	1
1984	53	4
1983	6	14
1982	73	1
1981	20	8
1980	30	7
1979	65	2
1978	53	4
1977	38	6
1976	2	17
1975	14	9
1974	61	3
1973	48	5
1972	53	4
1971	14	9
1970	2	17
1969	20	8
1968	73	1
1967	80	0
1966	10	11
1965	53	4
1964	13	10
1963	38	6
1962	65	2
1961	53	4
1960	20	8
1959	20	8
1958	61	3
1957	14	9
1956	48	5
1955	1	19
1954	38	6
1953	20	8
1952	73	1
1951	53	4
1950	73	1
1949	38	6
1948	20	8
1947	20	8
1946	48	5
1945	30	7
1944	38	6
1943	38	6
1942	30	7
1941	80	0

Weather Station Details

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