Highest Daily Low Temperatures in McKinney History

This is a list of the hottest daily low temperatures ever recorded in McKinney, Texas history from 1903–2024 based on data from the NOAA.

Highest temperatures all-time

Record for the highest daily low temperature in McKinney

The highest low temperature for a calendar day in McKinney, Texas history was 88 °F which happened on Friday, August 7, 1942.

Rank	Temperature	Date
1	88 °F	August 7, 1942
2	86 °F	August 30, 2011
3	85 °F	September 16, 1997
3	85 °F	August 21, 1997
5	84 °F	September 7, 1994
6	83 °F	August 11, 2023
6	83 °F	July 19, 2022
6	83 °F	August 10, 2011
6	83 °F	August 9, 2011
6	83 °F	July 8, 2011
6	83 °F	July 27, 1998
6	83 °F	August 18, 1951
13	82 °F	August 27, 2023
13	82 °F	August 12, 2023
13	82 °F	August 9, 2023
13	82 °F	August 5, 2023
13	82 °F	August 4, 2023
13	82 °F	July 14, 2023
13	82 °F	August 2, 2022
13	82 °F	August 1, 2022
13	82 °F	July 18, 2022
13	82 °F	August 11, 2015
13	82 °F	August 6, 2015
13	82 °F	August 5, 2013
13	82 °F	August 4, 2011
13	82 °F	August 3, 2011
13	82 °F	June 16, 2010
13	82 °F	August 5, 1991
13	82 °F	August 11, 1964
13	82 °F	July 11, 1964
13	82 °F	August 13, 1963
13	82 °F	July 26, 1954
13	82 °F	August 17, 1951
13	82 °F	August 9, 1947
13	82 °F	August 12, 1934
13	82 °F	August 9, 1934
13	82 °F	August 8, 1934