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 2024.
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 (2024)?
It has not reached 100 degrees Fahrenheit in Idaho Falls so far in 2024. As of March 26, the highest temperature this year is 62 °F.
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
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Year Rank Days >= 100 °F
2024 15 0
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
1948–2024 Idaho Falls Fanning Field location