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