Earliest and Latest Days of 100° F in Zion National Park

This is a list of the earliest and latest days in the year with a high temperature of at least 100 °F in Zion National Park, Utah history. It is based on NOAA data from the years 1904–2024.

Also see:

Earliest 100 degree day in Zion National Park?

The earliest in the year that Zion National Park, Utah had a high temperature of at least 100 °F is May 2 which happened in 1947.

Latest 100 degree day in Zion National Park?

The latest in the year that Zion National Park, Utah had a high temperature of at least 100 °F is September 30 which happened in 2010.

Earliest Days ≥ 100 °F

Date	Year	Temperature
May 2	1947	101 °F
May 3	1947	102 °F
May 4	1947	102 °F
May 5	1947	102 °F
May 5	1923	100 °F
May 6	1947	101 °F
May 12	1996	102 °F
May 14	1938	100 °F
May 16	2022	100 °F
May 17	1904	100 °F
May 18	2009	102 °F
May 18	2006	100 °F
May 19	2009	100 °F
May 19	2008	102 °F
May 19	2002	102 °F
May 20	2008	101 °F
May 21	2012	100 °F
May 22	2000	100 °F
May 23	2000	101 °F
May 23	1984	101 °F

Latest Days ≥ 100 °F

Date	Year	Temperature
September 30	2010	104 °F
September 29	2010	104 °F
September 29	1946	100 °F
September 28	2010	105 °F
September 27	2010	104 °F
September 27	2003	101 °F
September 26	2010	100 °F
September 26	2003	100 °F
September 25	2010	102 °F
September 25	1947	102 °F
September 25	1946	100 °F
September 24	1947	100 °F
September 22	1949	100 °F
September 22	1947	100 °F
September 22	1905	102 °F
September 21	1949	101 °F
September 21	1919	100 °F
September 20	2020	100 °F
September 19	2010	100 °F
September 19	1956	100 °F
September 19	1949	100 °F
September 19	1937	100 °F