Thunder Bay Record High by Day of the Year
Data for the record high temperature for each day of the year in
Thunder Bay, Ontario , as well as the year that the record was set. It is based on NOAA data for the years 1941–2024.
Change city
Day
Record High
Year Set or Tied
January 1
3.3
1964
January 2
3.3
1964
January 3
6.0
1984
January 4
4.1
1992
January 5
3.4
2007
January 6
4.7
2008
January 7
7.6
2003
January 8
7.1
2003
January 9
4.9
2002
January 10
7.1
2013
January 11
6.6
1986
January 12
6.3
1996
January 13
4.4
1942
January 14
3.5
1987
January 15
3.3
1949
January 16
5.0
1973
January 17
3.3
1942
January 18
4.5
1981
January 19
5.0
2018
January 20
3.9
1964
January 21
3.3
1942, 1944, 1964
January 22
7.2
1942
January 23
8.3
1942
January 24
6.1
1944
January 25
7.8
1973
January 26
6.1
1944
January 27
9.4
2006
January 28
4.0
1989
January 29
2.3
2008
January 30
4.5
2016
January 31
5.4
1993
February 1
4.2
2024
February 2
8.2
1993
February 3
6.1
1991
February 4
8.3
2024
February 5
4.8
2012
February 6
6.1
1991
February 7
9.5
1991
February 8
9.6
1991
February 9
9.4
1976
February 10
5.0
1966
February 11
5.8
2023
February 12
5.7
2023
February 13
6.3
2017
February 14
5.4
1984
February 15
6.6
1981
February 16
9.1
1981
February 17
8.0
1981
February 18
11.3
2017
February 19
9.0
1994
February 20
7.2
1975
February 21
8.6
2017
February 22
9.7
1984
February 23
9.4
1958
February 24
10.0
1976
February 25
12.2
1976
February 26
13.4
2000
February 27
7.8
2018
February 28
10.3
1985
March 1
8.5
1993
March 2
7.7
2024
March 3
11.2
2000
March 4
13.4
2000
March 5
7.8
2000
March 6
9.7
2000
March 7
15.9
1987
March 8
10.1
2021
March 9
12.4
1977
March 10
10.9
2015
March 11
15.9
2024
March 12
16.0
2016
March 13
15.6
2007
March 14
16.5
2010
March 15
17.4
2010
March 16
14.2
2010
March 17
16.5
2010
March 18
15.7
2012
March 19
18.9
2012
March 20
21.1
2012
March 21
14.3
2021
March 22
16.5
2000
March 23
13.1
2000
March 24
15.4
2003
March 25
12.8
1946
March 26
20.4
2007
March 27
19.4
1946
March 28
22.8
1946
March 29
15.0
1963
March 30
13.8
1986
March 31
23.8
2010
April 1
17.9
2010
April 2
16.7
2004
April 3
17.3
2021
April 4
18.3
1967
April 5
22.3
1991
April 6
22.0
1987
April 7
19.3
1991
April 8
16.0
1987
April 9
20.9
2017
April 10
21.5
2003
April 11
19.0
2006
April 12
22.8
1968
April 13
20.0
1998
April 14
26.7
1958
April 15
23.1
2010
April 16
21.2
2005
April 17
23.9
1952
April 18
25.6
1952
April 19
25.6
1952
April 20
27.4
1987
April 21
20.0
1942
April 22
26.6
1980
April 23
25.7
1982
April 24
28.3
1942
April 25
24.2
1999
April 26
20.1
1977
April 27
21.1
1952
April 28
23.8
1998
April 29
28.3
1949, 1965
April 30
27.8
1998
May 1
25.0
1980
May 2
28.7
1980
May 3
27.9
2015
May 4
32.6
1980
May 5
25.6
1993
May 6
28.6
2000
May 7
30.6
1953
May 8
32.8
1953
May 9
30.0
1985
May 10
29.8
2007
May 11
30.3
1991
May 12
33.0
1977
May 13
27.2
1958
May 14
26.7
1951
May 15
31.9
1991
May 16
30.1
1977
May 17
30.0
1962
May 18
30.5
1978, 1984
May 19
30.6
1972
May 20
31.2
1992
May 21
32.5
1980
May 22
34.8
1980
May 23
29.5
1980
May 24
29.4
1951
May 25
30.9
2014
May 26
31.7
1948
May 27
30.6
1986
May 28
33.9
1969
May 29
34.2
1986
May 30
35.2
1986
May 31
31.4
1995
June 1
30.3
1995
June 2
31.1
1948
June 3
31.1
1976
June 4
30.6
1961
June 5
34.5
1988
June 6
34.8
1988
June 7
31.7
1972
June 8
31.1
1959
June 9
30.6
1956
June 10
31.2
1997
June 11
32.9
1988
June 12
35.6
1956
June 13
30.6
1953
June 14
30.2
1987
June 15
30.6
1955
June 16
30.6
1946, 1955
June 17
31.7
1970
June 18
39.0
1995
June 19
34.4
1988
June 20
33.9
2022
June 21
31.1
1956
June 22
31.7
1945
June 23
32.6
1980
June 24
32.2
1954
June 25
32.9
1980
June 26
34.0
2001
June 27
32.2
1955
June 28
31.5
2018
June 29
33.0
2001
June 30
33.4
2002
July 1
32.2
1966
July 2
34.1
2020
July 3
34.3
2021
July 4
32.2
2020
July 5
32.1
2021
July 6
35.1
1988
July 7
35.8
1988
July 8
32.2
1955
July 9
31.2
1980, 2001
July 10
32.3
1979, 1981
July 11
33.8
1983
July 12
34.4
1966
July 13
35.0
1974
July 14
34.1
1983
July 15
34.7
2006
July 16
35.7
2002
July 17
33.4
2002, 2011
July 18
32.6
2021
July 19
32.2
1955
July 20
35.0
1955
July 21
33.8
1979
July 22
32.2
1955
July 23
33.6
1977
July 24
32.7
2005
July 25
32.2
1989
July 26
33.3
1970
July 27
31.8
1983
July 28
35.0
1988
July 29
32.8
1947
July 30
37.2
1975
July 31
32.8
1975
August 1
32.5
2001
August 2
34.3
1989
August 3
32.2
1989
August 4
32.5
2001
August 5
33.2
1983
August 6
34.0
2001
August 7
40.3
1983
August 8
35.6
1949
August 9
33.3
1949
August 10
31.6
1995
August 11
32.2
1947, 1965, 1988
August 12
33.1
1991
August 13
34.6
1991
August 14
33.9
1991
August 15
32.9
2003
August 16
31.2
2015
August 17
32.8
2008
August 18
31.7
1955
August 19
35.0
1955
August 20
31.7
1976
August 21
33.3
1942, 1976
August 22
32.2
1969
August 23
35.0
1947
August 24
32.2
1954
August 25
32.8
1976
August 26
31.7
1948, 1966
August 27
33.9
1969
August 28
31.7
1973
August 29
33.9
1991
August 30
32.8
1972
August 31
31.1
1960
September 1
31.1
1983
September 2
32.6
2023
September 3
32.8
2023
September 4
29.4
1995
September 5
33.1
1998
September 6
30.6
1945
September 7
30.0
1959
September 8
31.3
2002
September 9
30.7
2011
September 10
28.3
1947
September 11
34.1
2005
September 12
30.0
2002
September 13
27.2
1952
September 14
28.2
2018
September 15
25.9
1991
September 16
26.7
1948
September 17
27.2
1946, 1948
September 18
30.6
1976
September 19
28.4
2021
September 20
27.2
1941
September 21
28.9
1941
September 22
26.1
1958
September 23
28.0
2017
September 24
29.0
2007
September 25
24.1
1983
September 26
25.0
1943
September 27
26.6
2014
September 28
25.7
1989
September 29
24.7
2000
September 30
26.1
1968
October 1
25.0
2001
October 2
30.0
2023
October 3
28.6
2023
October 4
24.4
1967
October 5
26.7
1961
October 6
26.1
1943
October 7
24.4
1975
October 8
28.3
1943
October 9
25.6
1955
October 10
23.4
2003
October 11
24.4
1974
October 12
26.1
1995
October 13
24.4
1956
October 14
26.7
1964
October 15
26.7
1962
October 16
23.9
1968
October 17
25.6
1944
October 18
21.1
1947
October 19
25.1
2021
October 20
25.8
1978
October 21
21.5
1986, 2017
October 22
23.9
1947
October 23
23.6
1998
October 24
24.4
1963
October 25
18.9
1963
October 26
23.4
1989
October 27
20.1
1989
October 28
18.7
1989
October 29
17.8
1953
October 30
22.9
2008
October 31
18.3
1950
November 1
17.9
2001
November 2
19.4
1944
November 3
21.3
2022
November 4
21.7
1975
November 5
16.6
2020
November 6
20.7
2020
November 7
18.6
2016
November 8
18.9
2020
November 9
18.6
2020
November 10
17.4
2016
November 11
12.8
1961
November 12
15.9
2016
November 13
18.0
1999
November 14
13.6
2023
November 15
16.2
2001
November 16
16.7
1953
November 17
16.7
1953
November 18
15.0
1953
November 19
9.9
2012
November 20
13.1
1982
November 21
12.6
1990
November 22
10.7
1998
November 23
9.4
1942
November 24
13.1
2011
November 25
10.3
1984
November 26
9.4
1962
November 27
10.0
1962
November 28
7.8
1962
November 29
8.3
1951, 1962
November 30
9.4
1951
December 1
11.1
1962
December 2
11.7
1962
December 3
12.2
1962
December 4
11.1
1941, 1962
December 5
10.0
2015
December 6
8.1
2015
December 7
3.9
1963, 2023
December 8
6.4
1984
December 9
8.5
2020
December 10
5.6
1984
December 11
8.3
1949
December 12
6.7
1998
December 13
6.7
1993
December 14
13.7
2023
December 15
9.7
1997
December 16
10.4
2021
December 17
5.0
1967
December 18
5.8
1997
December 19
5.2
2006
December 20
5.7
2006
December 21
9.0
1994
December 22
5.7
1994
December 23
4.0
2023
December 24
8.3
2023
December 25
7.9
2023
December 26
6.0
2011
December 27
5.7
2003
December 28
7.3
2003
December 29
4.8
2023
December 30
4.4
1949
December 31
2.2
1950
Years with the Most Daily Records
Which years set the greatest number of daily high temperature records in Thunder Bay history?
Rank
Year
Records Set
1
2023
13
2
1991
13
3
1980
10
4
1962
10
5
1955
10
6
2021
9
7
2001
9
8
2000
9
9
1942
9
10
2003
8
Daily Records by Decade
This table shows the number of daily high temperature records in Thunder Bay that were set in each decade since 1941.
Decade
Records Set
1940s
44
1950s
40
1960s
38
1970s
32
1980s
61
1990s
43
2000s
50
2010s
39
2020s
35
Weather Station Details
Years
Station
Coordinates
2004–2024
Thunder Bay CS
location
1941–2003
Thunder Bay A
location