Highest Daily Low Temperatures in Rockford History

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

Highest temperatures all-time

Record for the highest daily low temperature in Rockford

The highest low temperature for a calendar day in Rockford, Illinois history was 80 °F which has happened twice, most recently on Friday July 19, 2019.

Rank	Temperature	Date
1	80 °F	July 19, 2019
1	80 °F	August 6, 1918
3	79 °F	July 18, 2011
3	79 °F	July 15, 1980
3	79 °F	July 18, 1942
3	79 °F	July 29, 1931
3	79 °F	August 8, 1896
8	78 °F	August 24, 2023
8	78 °F	August 11, 1944
8	78 °F	August 10, 1938
8	78 °F	August 23, 1918
8	78 °F	July 14, 1896
8	78 °F	September 17, 1895
8	78 °F	September 3, 1895
8	78 °F	July 12, 1895
8	78 °F	June 3, 1895
8	78 °F	July 13, 1893
18	77 °F	July 6, 2012
18	77 °F	September 2, 2011
18	77 °F	July 20, 2011
18	77 °F	August 2, 2006
18	77 °F	July 21, 2002
18	77 °F	July 30, 1999
18	77 °F	July 14, 1995
18	77 °F	July 9, 1989
18	77 °F	August 15, 1988
18	77 °F	July 29, 1983
18	77 °F	June 14, 1981
18	77 °F	July 4, 1977
18	77 °F	July 21, 1952
18	77 °F	July 28, 1949
18	77 °F	September 7, 1939
18	77 °F	July 21, 1932
18	77 °F	July 27, 1921
18	77 °F	August 13, 1918
18	77 °F	July 5, 1911
18	77 °F	July 4, 1897
18	77 °F	July 12, 1896
18	77 °F	September 11, 1895