Lowest Temperatures in Thunder Bay History

This is a list of the 20 lowest temperatures ever recorded in Thunder Bay, Ontario history from 1941–2024 based on data from the NOAA.

• Lowest temperatures by year
• Highest temperatures all-time
• Change city

Rank	Temperature	Date
1	-43.2 °C	January 31, 1996
2	-41.1 °C	January 30, 1951
3	-40.6 °C	February 1, 1996
3	-40.6 °C	January 30, 1950
5	-40.5 °C	January 30, 1996
6	-40.4 °C	February 4, 1996
6	-40.4 °C	January 17, 1982
8	-40.0 °C	February 3, 1970
8	-40.0 °C	February 1, 1951
8	-40.0 °C	January 29, 1951
11	-39.6 °C	December 31, 2013
12	-39.5 °C	January 22, 2013
13	-39.4 °C	February 12, 1967
14	-39.0 °C	January 2, 2014
14	-39.0 °C	January 16, 1979
16	-38.9 °C	February 9, 1951
16	-38.9 °C	January 27, 1950
18	-38.6 °C	February 17, 1979
19	-38.5 °C	January 2, 1979
20	-38.3 °C	January 8, 1968
20	-38.3 °C	January 19, 1963
20	-38.3 °C	January 25, 1957
20	-38.3 °C	January 18, 1948
20	-38.3 °C	January 17, 1948