Highest Daily Low Temperatures in Janesville History

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

Highest temperatures all-time

Record for the highest daily low temperature in Janesville

The highest low temperature for a calendar day in Janesville, Wisconsin history was 79 °F which happened on Monday, August 27, 1973.

Rank	Temperature	Date
1	79 °F	August 27, 1973
2	78 °F	August 2, 2006
2	78 °F	July 15, 1995
4	77 °F	July 6, 2012
4	77 °F	July 21, 2011
4	77 °F	August 1, 2006
4	77 °F	July 1, 1970
4	77 °F	July 30, 1955
4	77 °F	June 28, 1894
10	76 °F	August 24, 2023
10	76 °F	June 18, 2018
10	76 °F	July 19, 2013
10	76 °F	July 4, 2012
10	76 °F	July 2, 2011
10	76 °F	June 8, 2011
10	76 °F	July 5, 1999
10	76 °F	August 14, 1995
10	76 °F	July 16, 1995
10	76 °F	August 2, 1988
10	76 °F	June 21, 1988
10	76 °F	July 2, 1970
10	76 °F	August 3, 1964
10	76 °F	June 20, 1953
10	76 °F	June 26, 1952
10	76 °F	June 25, 1952