Idaho Falls September 30 Weather Records

Daily averages and all-time records for weather in Idaho Falls, Idaho for the date of September 30.
September 30 All-Time Records
1948–2024
Highest temperature 90 °F 1957
Lowest temperature 18 °F 1985
Lowest daily high 42 °F 1971
Highest daily low 51 °F 2000
Most precipitation 0.77 inches 1971
September 30 Average Weather
1991–2020 1
Average high 67.8 °F
Average low 36.3 °F
Chance precipitation 20.6%
Idaho Falls September 30 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 64 40 0.00 n/a
2022 64 43 0.00 n/a
2021 66 26 0.00 n/a
2020 76 32 0.00 n/a
2019 49 30 0.01 n/a
2018 68 42 0.00 n/a
2017 56 40 0.60 n/a
2016 76 44 0.00 n/a
2015 82 41 0.00 n/a
2014 59 44 0.21 n/a
2013 n/a n/a n/a n/a
2012 77 37 0.00 n/a
2011 87 41 0.00 n/a
2010 83 35 0.00 n/a
2009 52 35 0.67 n/a
2008 84 38 0.00 n/a
2007 57 30 0.00 n/a
2006 75 33 0.00 n/a
2005 78 37 0.00 n/a
2004 65 43 0.11 n/a
2003 78 43 0.00 n/a
2002 54 34 0.00 n/a
2001 79 37 0.00 n/a
2000 74 51 0.00 n/a
1999 73 28 0.00 n/a
1998 79 44 0.01 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 79 46 0.00 0.0
1992 85 35 0.00 0.0
1991 75 37 0.00 0.0
1990 78 37 0.00 0.0
1989 70 44 0.29 0.0
1988 78 32 0.00 0.0
1987 80 34 0.00 0.0
1986 45 39 0.52 0.0
1985 59 18 0.00 0.0
1984 73 30 0.00 0.0
1983 63 51 0.25 0.0
1982 57 36 0.13 0.0
1981 59 33 0.00 0.0
1980 81 36 0.00 0.0
1979 81 43 0.00 0.0
1978 75 31 0.00 0.0
1977 49 39 0.06 0.0
1976 78 36 0.00 0.0
1975 66 36 0.00 0.0
1974 75 35 0.00 0.0
1973 76 38 0.00 0.0
1972 68 26 0.00 0.0
1971 42 35 0.77 0.0
1970 77 34 0.00 0.0
1969 69 47 0.00 0.0
1968 72 41 0.00 0.0
1967 71 50 0.16 0.0
1966 63 34 0.00 0.0
1965 62 26 0.00 0.0
1964 70 51 0.00 0.0
1963 82 42 0.00 0.0
1962 61 28 0.00 0.0
1961 54 34 0.00 0.0
1960 76 36 0.00 0.0
1959 54 33 0.00 0.0
1958 67 36 0.00 0.0
1957 90 48 0.00 0.0
1956 71 34 0.00 0.0
1955 61 27 0.00 0.0
1954 56 24 0.00 0.0
1953 80 37 0.00 0.0
1952 75 35 0.00 0.0
1951 75 51 0.00 0.0
1950 44 29 0.00 0.0
1949 53 45 0.47 0.0
1948 73 35 0.00 0.0
What's the all-time high for Idaho Falls on 9/30?
For the date of Sep 30, the highest temperature ever reached in Idaho Falls history is 90 °F which happened in 1957.
Highest Temperatures in Idaho Falls on September 30
Rank Temperature Year
1 90 °F 1957
2 87 °F 2011
3 85 °F 1992
4 84 °F 2008
5 83 °F 2010
6 82 °F 2015
6 82 °F 1963
8 81 °F 1979
8 81 °F 1980
10 80 °F 1953
10 80 °F 1987
What's the all-time low for Idaho Falls on 9/30?
For the date of Sep 30, the lowest temperature ever reached in Idaho Falls history is 18 °F which happened in 1985.
Lowest Temperatures in Idaho Falls on September 30
Rank Temperature Year
1 18 °F 1985
2 24 °F 1954
3 26 °F 2021
3 26 °F 1965
3 26 °F 1972
6 27 °F 1955
7 28 °F 1999
7 28 °F 1962
9 29 °F 1950
10 30 °F 2019
10 30 °F 2007
10 30 °F 1984
Lowest High Temperatures in Idaho Falls on September 30
Rank Temperature Year
1 42 °F 1971
2 44 °F 1950
3 45 °F 1986
4 49 °F 1977
4 49 °F 2019
6 52 °F 2009
7 53 °F 1949
8 54 °F 1959
8 54 °F 1961
8 54 °F 2002
What's the most it has ever rained in Idaho Falls on 9/30?
For the date of Sep 30, the most precipitation ever recorded in Idaho Falls history is 0.77 inches which happened in 1971.
All-Time Most Precipitation in Idaho Falls on September 30
Rank Precipitation Year
1 0.77 inches 1971
2 0.67 inches 2009
3 0.60 inches 2017
4 0.52 inches 1986
5 0.47 inches 1949
6 0.29 inches 1989
7 0.25 inches 1983
8 0.21 inches 2014
9 0.16 inches 1967
10 0.13 inches 1982
Weather Station Details
Years Station Coordinates
1948–2024 Idaho Falls Fanning Field location