Twin Falls September 20 Weather Records

Daily averages and all-time records for weather in Twin Falls, Idaho for the date of September 20.
September 20 All-Time Records
1925–2024
Highest temperature 92 °F 1984
Lowest temperature 25 °F 1965
Lowest daily high 53 °F 1978
Highest daily low 55 °F 2014
Most precipitation 0.55 inches 1988
September 20 Average Weather
1991–2020 1
Average high 75.1 °F
Average low 46.0 °F
Chance precipitation 14.6%
Twin Falls September 20 Weather by Year
Year High (°F) Low (°F) Precip. (inches) Snow (inches)
2023 70 45 0.00 n/a
2022 86 45 0.00 n/a
2021 61 40 0.00 n/a
2020 74 48 0.00 n/a
2019 62 44 0.00 n/a
2018 69 43 0.00 n/a
2017 67 40 0.17 n/a
2016 83 49 0.00 n/a
2015 84 50 0.00 n/a
2014 84 55 0.00 n/a
2013 86 35 0.00 n/a
2012 82 53 0.00 n/a
2011 79 47 0.00 n/a
2010 69 46 0.00 n/a
2009 68 51 0.00 n/a
2008 67 49 0.08 n/a
2007 73 40 0.00 n/a
2006 57 43 0.00 n/a
2005 84 43 0.00 n/a
2004 58 39 0.00 n/a
2003 74 51 0.00 n/a
2002 75 52 0.00 n/a
2001 81 50 0.00 n/a
2000 73 44 0.00 n/a
1999 81 40 0.00 n/a
1998 66 45 0.00 n/a
1997 67 n/a 0.00 0.0
1996 63 37 0.00 0.0
1995 74 42 0.00 0.0
1994 84 44 0.00 0.0
1993 72 42 0.00 0.0
1992 75 47 0.00 0.0
1991 79 39 0.00 0.0
1990 71 46 0.00 0.0
1989 68 44 0.00 0.0
1988 73 37 0.55 0.0
1987 79 38 0.00 0.0
1986 57 39 0.01 0.0
1985 60 31 0.00 0.0
1984 92 50 0.00 0.0
1983 58 30 0.00 0.0
1982 78 42 0.07 0.0
1981 73 36 0.00 0.0
1980 65 42 0.00 0.0
1979 80 50 0.00 0.0
1978 53 31 0.00 0.0
1977 73 43 0.04 0.0
1976 72 41 0.00 0.0
1975 70 34 0.00 0.0
1974 80 39 0.00 0.0
1973 77 43 0.00 0.0
1972 67 40 0.00 0.0
1971 72 30 0.00 0.0
1970 64 40 0.46 0.0
1969 70 52 0.10 0.0
1968 64 41 0.02 0.0
1967 78 43 0.00 0.0
1966 78 48 0.00 0.0
1965 58 25 0.00 0.0
1964 68 44 0.00 0.0
1963 74 49 0.17 0.0
1962 80 43 0.00 0.0
1961 64 47 0.00 0.0
1960 88 48 0.00 0.0
1959 73 46 n/a 0.0
1958 81 39 0.00 0.0
1957 55 37 0.00 0.0
1956 84 53 0.00 0.0
1955 59 44 0.02 0.0
1954 74 35 0.00 0.0
1953 85 47 0.00 0.0
1952 87 49 0.00 0.0
1951 87 51 0.00 0.0
1950 73 43 0.00 0.0
1949 87 42 0.00 0.0
1948 64 39 0.04 0.0
1947 68 32 0.00 0.0
1946 74 45 0.00 0.0
1945 75 28 0.01 0.0
1944 79 37 0.00 0.0
1943 80 44 0.00 0.0
1942 77 30 0.00 0.0
1941 61 40 0.06 0.0
1940 61 38 0.25 0.0
1939 89 45 0.00 0.0
1938 88 45 0.00 0.0
1937 65 46 0.00 0.0
1936 85 43 0.00 0.0
1935 83 45 n/a n/a
1934 66 41 0.00 n/a
1933 79 51 0.00 n/a
1932 72 41 0.00 n/a
1931 66 41 0.00 n/a
1930 83 43 n/a n/a
1929 67 47 0.00 0.0
1928 69 33 0.00 0.0
1927 89 46 0.00 n/a
1926 n/a n/a 0.00 n/a
1925 62 44 0.39 n/a
What's the all-time high for Twin Falls on 9/20?
For the date of Sep 20, the highest temperature ever reached in Twin Falls history is 92 °F which happened in 1984.
Highest Temperatures in Twin Falls on September 20
Rank Temperature Year
1 92 °F 1984
2 89 °F 1927
2 89 °F 1939
4 88 °F 1938
4 88 °F 1960
6 87 °F 1951
6 87 °F 1952
6 87 °F 1949
9 86 °F 2013
9 86 °F 2022
What's the all-time low for Twin Falls on 9/20?
For the date of Sep 20, the lowest temperature ever reached in Twin Falls history is 25 °F which happened in 1965.
Lowest Temperatures in Twin Falls on September 20
Rank Temperature Year
1 25 °F 1965
2 28 °F 1945
3 30 °F 1942
3 30 °F 1971
3 30 °F 1983
6 31 °F 1978
6 31 °F 1985
8 32 °F 1947
9 33 °F 1928
10 34 °F 1975
Lowest High Temperatures in Twin Falls on September 20
Rank Temperature Year
1 53 °F 1978
2 55 °F 1957
3 57 °F 2006
3 57 °F 1986
5 58 °F 1965
5 58 °F 1983
5 58 °F 2004
8 59 °F 1955
9 60 °F 1985
10 61 °F 2021
10 61 °F 1941
10 61 °F 1940
What's the most it has ever rained in Twin Falls on 9/20?
For the date of Sep 20, the most precipitation ever recorded in Twin Falls history is 0.55 inches which happened in 1988.
All-Time Most Precipitation in Twin Falls on September 20
Rank Precipitation Year
1 0.55 inches 1988
2 0.46 inches 1970
3 0.39 inches 1925
4 0.25 inches 1940
5 0.17 inches 1963
5 0.17 inches 2017
7 0.10 inches 1969
8 0.08 inches 2008
9 0.07 inches 1982
10 0.06 inches 1941
Weather Station Details
Years Station Coordinates
1998–2024 Magic Valley Regional Airport location
1977–1997 Twin Falls 6 E location
1925–1976 Twin Falls 3 SE location