Number of Days of 100 °F in Idaho Falls by Year

This page contains a list of the number of days in each year that the high temperature equaled or exceeded 100 degrees Fahrenheit in Idaho Falls, Idaho, between 1948 and 2023.

Also see:

Which year had the most 100° days?

Based on NOAA records, the year 2002 holds the record for the most 100 °F days in Idaho Falls history. There were 2 days with a high temperature of at least 100 degrees that year.

How many so far this year (2023)?

As of December 3, there have been 1 days this year where the high temperature has reached at least 100 degrees Fahrenheit in Idaho Falls, Idaho.

The last time it reached at least 100° F was July 23, 2023.

Years marked with a gold background have more than 5% incomplete data
Click column headers to sort

Year	Rank	Days >= 100 °F
2023	2	1
2022	2	1
2021	15	0
2020	15	0
2019	15	0
2018	15	0
2017	15	0
2016	15	0
2015	2	1
2014	15	0
2013	15	0
2012	15	0
2011	15	0
2010	15	0
2009	15	0
2008	15	0
2007	2	1
2006	15	0
2005	15	0
2004	15	0
2003	2	1
2002	1	2
2001	15	0
2000	2	1
1999	15	0
1998	2	1
1997	15	0
1996	15	0
1995	15	0
1994	15	0
1993	15	0
1992	15	0
1991	15	0
1990	15	0
1989	2	1
1988	2	1
1987	15	0
1986	15	0
1985	15	0
1984	15	0
1983	2	1
1982	15	0
1981	15	0
1980	15	0
1979	15	0
1978	15	0
1977	15	0
1976	15	0
1975	15	0
1974	15	0
1973	15	0
1972	15	0
1971	15	0
1970	15	0
1969	15	0
1968	15	0
1967	15	0
1966	2	1
1965	15	0
1964	15	0
1963	15	0
1962	15	0
1961	2	1
1960	2	1
1959	15	0
1958	15	0
1957	15	0
1956	15	0
1955	15	0
1954	15	0
1953	15	0
1952	15	0
1951	15	0
1950	15	0
1949	15	0
1948	15	0

Weather Station Details

Years	Station	Coordinates
1948–2023	Idaho Falls Fanning Field	location