Highest Daily Low Temperatures in St. George History

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

Highest temperatures all-time

Record for the highest daily low temperature in St. George

The highest low temperature for a calendar day in St. George, Utah history was 91 °F which happened on Sunday, July 21, 1918.

Rank	Temperature	Date
1	91 °F	July 21, 1918
2	89 °F	July 3, 2013
2	89 °F	July 15, 1970
4	88 °F	July 20, 2010
4	88 °F	July 29, 2006
6	86 °F	July 13, 2010
6	86 °F	July 25, 2008
6	86 °F	July 14, 2002
6	86 °F	July 13, 2002
10	85 °F	July 2, 2013
10	85 °F	July 10, 2010
10	85 °F	August 5, 2007
10	85 °F	July 6, 2007
14	84 °F	July 18, 2022
14	84 °F	July 13, 2022
14	84 °F	July 13, 2021
14	84 °F	July 29, 2010
14	84 °F	July 23, 2010
14	84 °F	July 22, 2010
14	84 °F	July 21, 2010
14	84 °F	July 7, 1999
14	84 °F	July 29, 1994
14	84 °F	July 1, 1994
14	84 °F	August 7, 1921