Lowest Daily High Temperatures in Janesville History

This is a list of the coldest daily high temperatures ever recorded in Janesville, Wisconsin history from 1893–2024 based on data from the NOAA.

Lowest temperatures all-time

Record for the lowest daily high temperature in Janesville

The lowest high temperature for a calendar day in Janesville, Wisconsin history was -15 °F which happened on Wednesday, January 19, 1994.

Rank	Temperature	Date
1	-15 °F	January 19, 1994
2	-12 °F	January 31, 2019
2	-12 °F	January 7, 2014
2	-12 °F	February 3, 1996
5	-11 °F	January 16, 1994
5	-11 °F	December 21, 1989
7	-10 °F	February 4, 1996
8	-9 °F	January 20, 1985
9	-8 °F	January 15, 1972
10	-6 °F	December 24, 1983
10	-6 °F	January 10, 1982
12	-5 °F	December 19, 1983
12	-5 °F	January 30, 1951
14	-4 °F	January 16, 2009
14	-4 °F	January 18, 1994
14	-4 °F	January 15, 1994
14	-4 °F	February 7, 1895
14	-4 °F	February 5, 1895
14	-4 °F	February 1, 1895
20	-3 °F	January 15, 2024
20	-3 °F	January 28, 2014
20	-3 °F	January 6, 1988
20	-3 °F	December 25, 1983
20	-3 °F	January 29, 1966
20	-3 °F	February 8, 1895