Idaho Falls May 18 Weather Records

Daily averages and all-time records for weather in Idaho Falls, Idaho for the date of May 18.
May 18 All-Time Records
1948–2024
Highest temperature 89 °F 2009
Lowest temperature 25 °F 2003
Lowest daily high 49 °F 2003
Highest daily low 53 °F 2001
Most precipitation 0.43 inches 1957
May 18 Average Weather
1991–2020 1
Average high 68.3 °F
Average low 39.5 °F
Chance precipitation 29.3%
Idaho Falls May 18 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 77 43 0.00 n/a
2022 75 45 0.00 n/a
2021 78 47 0.00 n/a
2020 77 47 0.00 n/a
2019 55 41 0.03 n/a
2018 71 40 0.00 n/a
2017 57 28 0.00 n/a
2016 74 39 0.00 n/a
2015 63 42 0.20 n/a
2014 72 44 0.00 n/a
2013 60 46 0.11 n/a
2012 61 47 0.00 n/a
2011 67 36 0.00 n/a
2010 63 49 0.03 n/a
2009 89 41 0.00 n/a
2008 85 41 0.00 n/a
2007 83 45 0.00 n/a
2006 87 45 0.00 n/a
2005 64 45 0.19 n/a
2004 59 46 0.00 n/a
2003 49 25 0.00 n/a
2002 84 40 0.00 n/a
2001 73 53 0.03 n/a
2000 68 34 0.00 n/a
1999 70 37 0.00 n/a
1998 60 39 0.00 n/a
1997 n/a n/a n/a n/a
1996 n/a n/a n/a n/a
1995 n/a n/a n/a n/a
1994 n/a n/a n/a n/a
1993 78 41 0.00 0.0
1992 85 44 0.00 0.0
1991 61 37 0.27 0.0
1990 68 48 0.00 0.0
1989 67 33 0.07 0.0
1988 63 37 0.00 0.0
1987 64 50 0.02 0.0
1986 73 37 0.00 0.0
1985 74 41 0.00 0.0
1984 68 40 0.00 0.0
1983 55 40 0.04 0.0
1982 58 45 0.05 0.0
1981 65 35 0.00 0.0
1980 64 43 0.00 0.0
1979 72 40 0.00 0.0
1978 50 42 0.16 0.0
1977 51 33 0.17 0.0
1976 75 48 0.00 0.0
1975 71 41 0.00 0.0
1974 61 35 0.00 0.0
1973 85 46 0.00 0.0
1972 70 47 0.00 0.0
1971 53 34 0.00 0.0
1970 81 46 0.06 0.0
1969 78 44 0.04 0.0
1968 66 35 0.00 0.0
1967 75 48 0.00 0.0
1966 62 30 0.00 0.0
1965 66 31 0.00 0.0
1964 80 39 0.00 0.0
1963 74 40 0.00 0.0
1962 64 37 0.08 0.0
1961 64 39 0.12 0.0
1960 49 31 0.00 0.0
1959 56 38 0.00 0.0
1958 83 43 0.00 0.0
1957 63 38 0.43 0.0
1956 86 45 0.00 0.0
1955 71 33 0.00 0.0
1954 85 44 0.00 0.0
1953 67 41 0.00 0.0
1952 72 34 0.00 0.0
1951 72 45 0.00 0.0
1950 51 34 0.00 0.0
1949 57 39 0.29 0.0
What's the all-time high for Idaho Falls on 5/18?
For the date of May 18, the highest temperature ever reached in Idaho Falls history is 89 °F which happened in 2009.
Highest Temperatures in Idaho Falls on May 18
Rank Temperature Year
1 89 °F 2009
2 87 °F 2006
3 86 °F 1956
4 85 °F 1992
4 85 °F 1973
4 85 °F 2008
4 85 °F 1954
8 84 °F 2002
9 83 °F 1958
9 83 °F 2007
What's the all-time low for Idaho Falls on 5/18?
For the date of May 18, the lowest temperature ever reached in Idaho Falls history is 25 °F which happened in 2003.
Lowest Temperatures in Idaho Falls on May 18
Rank Temperature Year
1 25 °F 2003
2 28 °F 2017
3 30 °F 1966
4 31 °F 1965
4 31 °F 1960
6 33 °F 1977
6 33 °F 1955
6 33 °F 1989
9 34 °F 1952
9 34 °F 2000
9 34 °F 1971
9 34 °F 1950
Lowest High Temperatures in Idaho Falls on May 18
Rank Temperature Year
1 49 °F 2003
1 49 °F 1960
3 50 °F 1978
4 51 °F 1977
4 51 °F 1950
6 53 °F 1971
7 55 °F 2019
7 55 °F 1983
9 56 °F 1959
10 57 °F 2017
10 57 °F 1949
What's the most it has ever rained in Idaho Falls on 5/18?
For the date of May 18, the most precipitation ever recorded in Idaho Falls history is 0.43 inches which happened in 1957.
All-Time Most Precipitation in Idaho Falls on May 18
Rank Precipitation Year
1 0.43 inches 1957
2 0.29 inches 1949
3 0.27 inches 1991
4 0.20 inches 2015
5 0.19 inches 2005
6 0.17 inches 1977
7 0.16 inches 1978
8 0.12 inches 1961
9 0.11 inches 2013
10 0.08 inches 1962
Weather Station Details
Years Station Coordinates
1948–2024 Idaho Falls Fanning Field location