Jerome Threshold Days by Year (USC00024453)

17 fixed thresholds counted per year at Jerome (USC00024453): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Jerome Thresholds

Jerome: days with 10 mm (0.39 in) or more of precipitation in 117 years, most in 1905 with 40.
Jerome: days with 25 mm (0.98 in) or more of precipitation in 109 years, most in 1905 with 15.
Jerome: days with a maximum temperature at or above 30 C (86 F) in 106 years, most in 2024 with 114.
Jerome: days with a maximum temperature at or above 90 F (32.2 C) in 106 years, most in 1901 with 81.
17 fixed thresholds have at least one qualifying day at Jerome.

Days at or above 30 C (86 F)

106 years with a qualifying day

Days per year at Jerome with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 114 in 2024.

Days at or above 30 C (86 F) per year at Jerome
Year	Days	Decade average
1898	108	104.5
1899	101	104.5
1901	99	79.7
1902	93	79.7
1903	82	79.7
1904	85	79.7
1905	82	79.7
1906	79	79.7
1907	82	79.7
1908	65	79.7
1909	50	79.7
1910	113	80.5
1911	75	80.5
1912	67	80.5
1914	75	80.5
1917	85	80.5
1919	68	80.5
1922	85	75
1923	61	75
1924	88	75
1929	66	75
1930	78	93
1931	91	93
1932	92	93
1933	107	93
1934	104	93
1935	97	93
1936	108	93
1937	83	93
1939	77	93
1940	64	73
1941	57	73
1942	83	73
1943	78	73
1944	78	73
1945	72	73
1946	78	73
1947	70	73
1948	72	73
1949	78	73
1950	74	71.3
1951	78	71.3
1952	82	71.3
1953	78	71.3
1954	60	71.3
1955	56	71.3
1956	81	71.3
1957	58	71.3
1958	83	71.3
1959	63	71.3
1960	81	61
1961	65	61
1962	67	61
1963	34	61
1964	52	61
1965	41	61
1968	65	61
1969	83	61
1970	70	77.5
1971	80	77.5
1972	65	77.5
1973	88	77.5
1974	82	77.5
1975	81	77.5
1976	75	77.5
1977	59	77.5
1978	88	77.5
1979	87	77.5
1981	70	73.5
1982	62	73.5
1983	75	73.5
1984	66	73.5
1985	80	73.5
1989	88	73.5
1990	62	75.4
1991	77	75.4
1992	60	75.4
1993	86	75.4
1994	102	75.4
1995	76	75.4
1996	90	75.4
1997	81	75.4
1998	63	75.4
1999	57	75.4
2000	104	89
2002	97	89
2003	101	89
2004	89	89
2005	74	89
2006	81	89
2007	90	89
2008	76	89
2011	89	85.1
2012	90	85.1
2013	74	85.1
2014	87	85.1
2015	79	85.1
2016	78	85.1
2017	86	85.1
2018	94	85.1
2019	89	85.1
2020	120	99.8
2021	93	99.8
2023	104	99.8
2024	114	99.8
2026	68	99.8

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

First to last qualifying date each year at Jerome
Year	First date	Last date
1898	1898-04-01	1898-09-27
1899	1899-05-11	1899-09-30
1901	1901-05-10	1901-10-02
1902	1902-05-28	1902-09-25
1903	1903-05-11	1903-09-09
1904	1904-05-07	1904-09-20
1905	1905-05-16	1905-09-22
1906	1906-06-08	1906-10-08
1907	1907-04-10	1907-09-26
1908	1908-06-08	1908-09-23
1909	1909-05-28	1909-09-24
1910	1910-04-25	1910-10-10
1911	1911-05-22	1911-09-24
1912	1912-05-17	1912-09-28
1914	1914-05-07	1914-09-27
1917	1917-06-08	1917-10-06
1919	1919-06-05	1919-09-21
1922	1922-05-25	1922-09-24
1923	1923-05-09	1923-09-10
1924	1924-05-16	1924-09-28
1929	1929-05-19	1929-10-01
1930	1930-04-08	1930-09-21
1931	1931-05-13	1931-10-17
1932	1932-05-18	1932-10-17
1933	1933-05-26	1933-10-28
1934	1934-04-11	1934-10-28
1935	1935-06-02	1935-10-06
1936	1936-04-14	1936-10-14
1937	1937-04-17	1937-09-27
1939	1939-05-27	1939-09-21
1940	1940-05-13	1940-09-07
1941	1941-05-08	1941-09-10
1942	1942-05-20	1942-09-29
1943	1943-04-24	1943-09-23
1944	1944-06-06	1944-09-24
1945	1945-06-13	1945-09-16
1946	1946-06-02	1946-09-29
1947	1947-05-02	1947-10-05
1948	1948-04-17	1948-09-15
1949	1949-04-23	1949-09-24
1950	1950-04-21	1950-10-14
1951	1951-05-26	1951-09-21
1952	1952-05-13	1952-09-20
1953	1953-06-11	1953-09-26
1954	1954-05-20	1954-09-23
1955	1955-05-30	1955-10-02
1956	1956-05-18	1956-09-29
1957	1957-06-02	1957-09-29
1958	1958-05-19	1958-09-22
1959	1959-05-13	1959-09-10
1960	1960-05-11	1960-09-27
1961	1961-06-08	1961-08-29
1962	1962-05-12	1962-09-20
1963	1963-05-07	1963-10-02
1964	1964-05-21	1964-10-04
1965	1965-06-12	1965-10-10
1968	1968-05-27	1968-09-13
1969	1969-05-19	1969-09-30
1970	1970-05-17	1970-09-12
1971	1971-06-14	1971-09-17
1972	1972-05-29	1972-10-02
1973	1973-05-19	1973-10-02
1974	1974-05-26	1974-09-12
1975	1975-05-12	1975-10-06
1976	1976-05-14	1976-09-05
1977	1977-05-30	1977-09-09
1978	1978-05-13	1978-10-12
1979	1979-06-11	1979-10-07
1981	1981-06-05	1981-09-02
1982	1982-06-11	1982-09-25
1983	1983-05-23	1983-09-23
1984	1984-05-14	1984-09-15
1985	1985-06-07	1985-09-03
1989	1989-04-09	1989-09-26
1990	1990-06-03	1990-09-14
1991	1991-05-22	1991-10-15
1992	1992-05-19	1992-09-29
1993	1993-05-12	1993-10-02
1994	1994-05-30	1994-10-01
1995	1995-06-02	1995-09-14
1996	1996-04-26	1996-10-11
1997	1997-05-07	1997-09-11
1998	1998-06-16	1998-08-31
1999	1999-05-28	1999-09-14
2000	2000-04-27	2000-10-03
2002	2002-05-15	2002-09-23
2003	2003-05-17	2003-10-02
2004	2004-05-09	2004-09-18
2005	2005-05-20	2005-09-27
2006	2006-05-12	2006-09-07
2007	2007-04-29	2007-09-16
2008	2008-05-19	2008-09-08
2011	2011-05-28	2011-09-30
2012	2012-04-23	2012-10-04
2013	2013-04-30	2013-09-07
2014	2014-05-17	2014-09-25
2015	2015-05-31	2015-10-02
2016	2016-05-14	2016-09-20
2017	2017-05-06	2017-09-13
2018	2018-05-07	2018-09-30
2019	2019-06-05	2019-09-15
2020	2020-04-29	2020-10-16
2021	2021-05-07	2021-09-18
2023	2023-05-01	2023-10-23
2024	2024-05-28	2024-10-15
2026	2026-05-13	2026-09-11

Every Fixed Threshold

Fixed thresholds at Jerome
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	106	114	2024	68
35 C (95 F): Days	105	43	1901	9
40 C (104 F): Days	18	4	2021	3
90 F (32.2 C): Days	106	81	1901	35
100 F (37.8 C): Days	64	17	1936	12
0 C (32 F): Ice days (max	49	10	1949	1
0 C (32 F): Frost days (min	99	89	1964	5
-10 C (14 F): Days with min	27	5	1933	1
20 C (68 F): Tropical nights (min	99	85	2024	11
25 C (77 F): Days with min	55	10	2017	5
10 mm (0.39 in): Days with 10 mm or more rain	117	40	1905	14
25 mm (0.98 in): Days with 25 mm or more rain	109	15	1905	3
50 mm (1.97 in): Days with 50 mm or more rain	40	3	1905	1
100 mm (3.94 in): Days with 100 mm or more rain	2	1	1978	1
10 cm (3.9 in): Days with 10 cm or more snowfall	67	8	1944	2
25 cm (9.8 in): Days with 25 cm or more snowfall	20	2	1898	1
50 cm (19.7 in): Days with 50 cm or more snowfall	2	1	1905	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1898.

Download the Data

Data for Jerome 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).

Jerome Threshold Days by Year (USC00024453)

Key Facts for Jerome Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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