Highest Daily Low Temperatures in Alta History

This is a list of the hottest daily low temperatures ever recorded in Alta, Utah history from 1905–2024 based on data from the NOAA.

Highest temperatures all-time

Record for the highest daily low temperature in Alta

The highest low temperature for a calendar day in Alta, Utah history was 70 °F which happened on Saturday, July 21, 1945.

Rank	Temperature	Date
1	70 °F	July 21, 1945
2	68 °F	July 6, 1945
3	66 °F	July 26, 1945
3	66 °F	July 7, 1945
5	65 °F	July 3, 2012
5	65 °F	August 30, 2011
5	65 °F	July 2, 1999
5	65 °F	August 31, 1947
5	65 °F	July 13, 1945
5	65 °F	July 5, 1945
5	65 °F	July 4, 1945
12	64 °F	August 2, 1945
12	64 °F	July 28, 1945
12	64 °F	July 20, 1945
12	64 °F	July 17, 1945
12	64 °F	July 16, 1945
12	64 °F	July 14, 1945
18	63 °F	July 14, 2000
18	63 °F	July 25, 1945
18	63 °F	July 24, 1945