American Falls 6 NE Threshold Days by Year (USC00100227)

17 fixed thresholds counted per year at American Falls 6 NE (USC00100227): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for American Falls 6 NE Thresholds

American Falls 6 NE: nights with a minimum temperature at or below 0 C (32 F) in 93 years, most in 1912 with 250.
American Falls 6 NE: nights with a minimum temperature at or below -10 C (14 F) in 93 years, most in 1919 with 89.
American Falls 6 NE: days with 10 mm (0.39 in) or more of precipitation in 89 years, most in 1907 with 17.
American Falls 6 NE: days with a maximum temperature at or above 30 C (86 F) in 84 years, most in 1919 with 90.
17 fixed thresholds have at least one qualifying day at American Falls 6 NE.

Days at or above 30 C (86 F)

84 years with a qualifying day

Days per year at American Falls 6 NE with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 90 in 1919.

Days at or above 30 C (86 F) per year at American Falls 6 NE
Year	Days	Decade average
1894	60	63.6
1895	53	63.6
1896	61	63.6
1898	66	63.6
1899	78	63.6
1901	60	51.5
1902	56	51.5
1903	56	51.5
1904	55	51.5
1905	54	51.5
1906	56	51.5
1907	28	51.5
1908	47	51.5
1911	54	65
1912	44	65
1916	71	65
1918	66	65
1919	90	65
1920	67	74.3
1923	79	74.3
1924	77	74.3
1936	67	52.3
1937	56	52.3
1938	41	52.3
1939	45	52.3
1940	55	48.4
1941	25	48.4
1942	48	48.4
1943	61	48.4
1944	47	48.4
1945	44	48.4
1946	50	48.4
1947	57	48.4
1948	54	48.4
1949	43	48.4
1950	36	49.8
1951	33	49.8
1952	45	49.8
1953	52	49.8
1954	52	49.8
1955	52	49.8
1956	47	49.8
1957	58	49.8
1958	61	49.8
1959	62	49.8
1960	52	49.6
1961	70	49.6
1962	35	49.6
1963	48	49.6
1964	45	49.6
1965	29	49.6
1966	66	49.6
1967	61	49.6
1968	39	49.6
1969	51	49.6
1970	49	51.3
1971	44	51.3
1972	29	51.3
1974	72	51.3
1975	45	51.3
1976	48	51.3
1977	57	51.3
1978	47	51.3
1979	71	51.3
1980	51	57.4
1981	71	57.4
1982	50	57.4
1983	54	57.4
1984	55	57.4
1985	56	57.4
1986	53	57.4
1987	54	57.4
1988	73	57.4
1989	57	57.4
1990	66	52.6
1991	63	52.6
1992	56	52.6
1993	27	52.6
1996	51	52.6
2003	51	41.4
2004	31	41.4
2005	40	41.4
2006	46	41.4
2007	39	41.4

For each year, a bar from the first to the last day at American Falls 6 NE meeting 30 C (86 F).

First to last qualifying date each year at American Falls 6 NE
Year	First date	Last date
1894	1894-05-18	1894-08-28
1895	1895-06-21	1895-09-30
1896	1896-06-08	1896-09-06
1898	1898-06-16	1898-09-26
1899	1899-06-16	1899-09-30
1901	1901-05-16	1901-09-20
1902	1902-06-03	1902-09-13
1903	1903-05-13	1903-09-23
1904	1904-06-14	1904-09-20
1905	1905-06-07	1905-09-24
1906	1906-06-11	1906-09-30
1907	1907-07-01	1907-08-24
1908	1908-06-25	1908-09-16
1911	1911-06-11	1911-09-23
1912	1912-06-06	1912-09-21
1916	1916-06-08	1916-09-24
1918	1918-05-03	1918-09-21
1919	1919-05-21	1919-09-27
1920	1920-06-04	1920-09-03
1923	1923-05-24	1923-09-14
1924	1924-06-03	1924-09-15
1936	1936-05-11	1936-09-21
1937	1937-05-24	1937-09-18
1938	1938-06-04	1938-09-18
1939	1939-05-29	1939-09-21
1940	1940-05-10	1940-08-22
1941	1941-06-21	1941-09-12
1942	1942-06-06	1942-09-07
1943	1943-05-27	1943-09-17
1944	1944-06-30	1944-09-12
1945	1945-06-21	1945-09-02
1946	1946-06-03	1946-09-14
1947	1947-05-02	1947-09-25
1948	1948-05-16	1948-09-15
1949	1949-06-09	1949-09-08
1950	1950-06-06	1950-09-07
1951	1951-06-15	1951-09-08
1952	1952-06-05	1952-09-25
1953	1953-06-11	1953-09-16
1954	1954-05-18	1954-09-11
1955	1955-06-20	1955-09-13
1956	1956-05-31	1956-09-19
1957	1957-06-05	1957-09-07
1958	1958-05-19	1958-09-11
1959	1959-06-05	1959-09-12
1960	1960-05-11	1960-09-03
1961	1961-06-08	1961-08-29
1962	1962-06-24	1962-09-18
1963	1963-06-27	1963-09-30
1964	1964-06-25	1964-08-26
1965	1965-06-12	1965-08-28
1966	1966-05-27	1966-09-23
1967	1967-06-29	1967-09-05
1968	1968-06-02	1968-09-10
1969	1969-05-24	1969-09-03
1970	1970-06-21	1970-08-31
1971	1971-06-21	1971-09-11
1972	1972-05-31	1972-08-22
1974	1974-06-12	1974-09-10
1975	1975-06-30	1975-09-09
1976	1976-06-06	1976-09-06
1977	1977-06-01	1977-09-11
1978	1978-06-09	1978-09-28
1979	1979-05-15	1979-09-22
1980	1980-06-20	1980-09-06
1981	1981-06-22	1981-09-19
1982	1982-06-17	1982-09-10
1983	1983-05-25	1983-09-08
1984	1984-05-14	1984-09-18
1985	1985-05-02	1985-08-31
1986	1986-05-28	1986-09-05
1987	1987-05-14	1987-10-03
1988	1988-05-16	1988-09-09
1989	1989-06-08	1989-09-29
1990	1990-06-09	1990-10-01
1991	1991-06-10	1991-09-20
1992	1992-04-29	1992-09-23
1993	1993-05-11	1993-09-11
1996	1996-06-07	1996-09-10
2003	2003-05-23	2003-09-04
2004	2004-07-10	2004-09-11
2005	2005-06-14	2005-09-09
2006	2006-05-18	2006-09-06
2007	2007-05-12	2007-09-04

Every Fixed Threshold

Fixed thresholds at American Falls 6 NE
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	84	90	1919	39
35 C (95 F): Days	76	46	1919	2
40 C (104 F): Days	1	1	1919	1
90 F (32.2 C): Days	84	69	1919	16
100 F (37.8 C): Days	25	11	1919	2
0 C (32 F): Ice days (max	84	86	1985	47
0 C (32 F): Frost days (min	93	250	1912	166
-10 C (14 F): Days with min	93	89	1919	31
-20 C (-4 F): Days with min	75	24	1985	2
-30 C (-22 F): Days with min	16	5	1949	1
20 C (68 F): Tropical nights (min	44	6	1916	2
25 C (77 F): Days with min	1	1	1906	1
10 mm (0.39 in): Days with 10 mm or more rain	89	17	1907	5
25 mm (0.98 in): Days with 25 mm or more rain	43	4	1911	1
50 mm (1.97 in): Days with 50 mm or more rain	1	1	1987	1
10 cm (3.9 in): Days with 10 cm or more snowfall	46	5	1936	2
25 cm (9.8 in): Days with 25 cm or more snowfall	7	1	1945	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1894.

Download the Data

Data for American Falls 6 NE threshold days by year: CSV or JSON. Field meanings are on the data page.

Source: NOAA National Centers for Environmental Information, Global Historical Climatology Network Daily (GHCN-Daily). Records are computed by World Extreme Weather Monitor and are not official NOAA products. (US Government open data (NOAA NCEI)) Data as of 2026-10-17 (17 October 2026). Threshold counts are computed by this site.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).

American Falls 6 NE Threshold Days by Year (USC00100227)

Key Facts for American Falls 6 NE Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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