Highest Daily Low Temperatures in Olney History

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

Highest temperatures all-time

Record for the highest daily low temperature in Olney

The highest low temperature for a calendar day in Olney, Illinois history was 83 °F which happened on Sunday, June 29, 1952.

Rank	Temperature	Date
1	83 °F	June 29, 1952
2	81 °F	June 28, 1952
2	81 °F	July 29, 1901
4	80 °F	July 2, 1953
4	80 °F	August 19, 1936
6	79 °F	July 10, 1981
6	79 °F	August 4, 1930
6	79 °F	September 16, 1911
6	79 °F	July 24, 1907
6	79 °F	July 24, 1901
11	78 °F	June 17, 2022
11	78 °F	July 12, 2011
11	78 °F	July 5, 1999
11	78 °F	July 4, 1999
11	78 °F	July 26, 1993
11	78 °F	July 5, 1993
11	78 °F	June 27, 1969
11	78 °F	July 20, 1954
11	78 °F	July 19, 1954
11	78 °F	July 20, 1952
11	78 °F	July 21, 1949
11	78 °F	June 26, 1943
11	78 °F	August 27, 1936
11	78 °F	July 27, 1936
11	78 °F	July 26, 1936
11	78 °F	July 15, 1936
11	78 °F	July 13, 1914
11	78 °F	July 30, 1909
11	78 °F	June 30, 1901
11	78 °F	June 25, 1898