Alum Fk Threshold Days by Year (USC00030130)

19 fixed thresholds counted per year at Alum Fk (USC00030130): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Alum Fk Thresholds

Alum Fk: nights with a minimum temperature at or below 0 C (32 F) in 87 years, most in 2014 with 100.
Alum Fk: nights with a minimum temperature at or above 20 C (68 F) in 87 years, most in 2016 with 90.
Alum Fk: days with 10 mm (0.39 in) or more of precipitation in 87 years, most in 1957 with 63.
Alum Fk: days with 25 mm (0.98 in) or more of precipitation in 87 years, most in 2019 with 31.
19 fixed thresholds have at least one qualifying day at Alum Fk.

Days at or above 30 C (86 F)

86 years with a qualifying day

Days per year at Alum Fk with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 139 in 1963.

Days at or above 30 C (86 F) per year at Alum Fk
Year	Days	Decade average
1939	124	124
1940	82	103
1941	101	103
1942	95	103
1943	115	103
1944	124	103
1945	90	103
1946	96	103
1947	102	103
1948	114	103
1949	111	103
1950	88	109.1
1951	104	109.1
1952	132	109.1
1953	124	109.1
1954	123	109.1
1955	113	109.1
1956	117	109.1
1957	86	109.1
1958	101	109.1
1959	103	109.1
1960	113	110.1
1961	86	110.1
1962	112	110.1
1963	139	110.1
1964	112	110.1
1965	124	110.1
1966	110	110.1
1967	91	110.1
1968	100	110.1
1969	114	110.1
1970	112	102.9
1971	105	102.9
1972	116	102.9
1973	96	102.9
1974	77	102.9
1975	102	102.9
1976	88	102.9
1977	127	102.9
1978	112	102.9
1979	94	102.9
1980	128	101.6
1981	111	101.6
1982	94	101.6
1983	99	101.6
1984	91	101.6
1985	105	101.6
1986	100	101.6
1987	105	101.6
1988	101	101.6
1989	82	101.6
1990	108	96.8
1991	112	96.8
1992	76	96.8
1994	79	96.8
1995	95	96.8
1996	91	96.8
1997	95	96.8
1998	123	96.8
1999	92	96.8
2000	98	78.4
2001	81	78.4
2002	88	78.4
2003	66	78.4
2004	48	78.4
2005	105	78.4
2006	92	78.4
2007	71	78.4
2008	71	78.4
2009	64	78.4
2010	110	84.6
2011	98	84.6
2012	102	84.6
2013	84	84.6
2014	49	84.6
2015	81	84.6
2016	82	84.6
2017	55	84.6
2018	99	84.6
2019	86	84.6
2020	63	84.5
2021	88	84.5
2022	86	84.5
2024	85	84.5
2025	85	84.5
2026	100	84.5

For each year, a bar from the first to the last day at Alum Fk meeting 30 C (86 F).

First to last qualifying date each year at Alum Fk
Year	First date	Last date
1939	1939-05-10	1939-10-24
1940	1940-04-01	1940-10-19
1941	1941-04-12	1941-10-22
1942	1942-05-28	1942-09-19
1943	1943-04-10	1943-09-27
1944	1944-05-10	1944-10-07
1945	1945-05-26	1945-09-28
1946	1946-04-01	1946-10-10
1947	1947-06-05	1947-10-17
1948	1948-04-07	1948-09-23
1949	1949-04-23	1949-10-10
1950	1950-05-16	1950-10-28
1951	1951-05-19	1951-10-20
1952	1952-04-29	1952-10-27
1953	1953-05-01	1953-10-16
1954	1954-04-25	1954-10-11
1955	1955-04-17	1955-10-06
1956	1956-05-06	1956-10-07
1957	1957-04-29	1957-09-20
1958	1958-05-14	1958-09-26
1959	1959-04-06	1959-10-02
1960	1960-04-06	1960-10-03
1961	1961-05-18	1961-09-24
1962	1962-04-20	1962-10-13
1963	1963-03-28	1963-10-27
1964	1964-04-16	1964-09-23
1965	1965-04-07	1965-10-11
1966	1966-03-31	1966-10-10
1967	1967-03-12	1967-10-07
1968	1968-05-02	1968-10-15
1969	1969-04-16	1969-10-20
1970	1970-05-05	1970-10-04
1971	1971-04-21	1971-10-14
1972	1972-04-12	1972-10-14
1973	1973-05-09	1973-10-05
1974	1974-03-31	1974-08-29
1975	1975-04-27	1975-10-15
1976	1976-04-11	1976-10-14
1977	1977-04-09	1977-10-28
1978	1978-04-06	1978-10-22
1979	1979-04-16	1979-10-21
1980	1980-04-21	1980-10-11
1981	1981-03-31	1981-10-06
1982	1982-03-16	1982-10-05
1983	1983-05-25	1983-10-04
1984	1984-04-25	1984-09-24
1985	1985-05-26	1985-10-12
1986	1986-04-07	1986-10-04
1987	1987-04-19	1987-09-17
1988	1988-05-09	1988-09-27
1989	1989-04-21	1989-10-14
1990	1990-04-24	1990-10-06
1991	1991-05-12	1991-10-19
1992	1992-05-04	1992-10-26
1994	1994-05-30	1994-10-05
1995	1995-05-13	1995-09-30
1996	1996-04-19	1996-09-24
1997	1997-05-26	1997-10-06
1998	1998-05-12	1998-10-01
1999	1999-05-22	1999-10-14
2000	2000-05-23	2000-10-06
2001	2001-05-16	2001-09-14
2002	2002-05-02	2002-10-07
2003	2003-05-30	2003-10-25
2004	2004-06-02	2004-10-20
2005	2005-05-12	2005-10-19
2006	2006-04-18	2006-10-19
2007	2007-05-07	2007-10-01
2008	2008-05-20	2008-09-13
2009	2009-04-23	2009-09-28
2010	2010-05-06	2010-10-11
2011	2011-04-10	2011-10-17
2012	2012-05-06	2012-09-23
2013	2013-05-15	2013-09-27
2014	2014-05-05	2014-10-03
2015	2015-06-06	2015-10-16
2016	2016-06-08	2016-10-31
2017	2017-06-13	2017-10-15
2018	2018-05-08	2018-10-06
2019	2019-05-16	2019-10-07
2020	2020-03-27	2020-09-13
2021	2021-05-28	2021-10-11
2022	2022-05-10	2022-10-07
2024	2024-05-08	2024-10-26
2025	2025-05-15	2025-10-03
2026	2026-03-22	2026-10-10

Every Fixed Threshold

Fixed thresholds at Alum Fk
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	86	139	1963	100
35 C (95 F): Days	86	85	1954	37
40 C (104 F): Days	18	12	1980	1
90 F (32.2 C): Days	86	110	1954	74
100 F (37.8 C): Days	48	42	1954	9
110 F (43.3 C): Days	1	1	1986	1
0 C (32 F): Ice days (max	74	13	2014	4
0 C (32 F): Frost days (min	87	100	2014	38
-10 C (14 F): Days with min	78	19	1963	9
-20 C (-4 F): Days with min	2	1	1942	1
20 C (68 F): Tropical nights (min	87	90	2016	96
25 C (77 F): Days with min	31	14	1980	1
10 mm (0.39 in): Days with 10 mm or more rain	87	63	1957	30
25 mm (0.98 in): Days with 25 mm or more rain	87	31	2019	13
50 mm (1.97 in): Days with 50 mm or more rain	87	14	2009	3
100 mm (3.94 in): Days with 100 mm or more rain	43	2	1945	1
200 mm (7.87 in): Days with 200 mm or more rain	1	1	2008	1
10 cm (3.9 in): Days with 10 cm or more snowfall	15	2	1960	1
25 cm (9.8 in): Days with 25 cm or more snowfall	2	1	2003	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1939.

Download the Data

Data for Alum Fk 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 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Alum Fk Threshold Days by Year (USC00030130)

Key Facts for Alum Fk Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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