Prescott Threshold Days by Year (USC00026796)

17 fixed thresholds counted per year at Prescott (USC00026796): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Prescott Thresholds

Prescott: days with 10 mm (0.39 in) or more of precipitation in 123 years, most in 1965 with 29.
Prescott: days with a maximum temperature at or above 30 C (86 F) in 122 years, most in 2020 with 115.
Prescott: days with a maximum temperature at or above 90 F (32.2 C) in 122 years, most in 1933 with 81.
Prescott: days with 25 mm (0.98 in) or more of precipitation in 120 years, most in 1965 with 12.
17 fixed thresholds have at least one qualifying day at Prescott.

Days at or above 30 C (86 F)

122 years with a qualifying day

Days per year at Prescott with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 115 in 2020.

Days at or above 30 C (86 F) per year at Prescott
Year	Days	Decade average
1899	88	88
1900	70	62.4
1901	66	62.4
1902	59	62.4
1903	49	62.4
1905	97	62.4
1906	62	62.4
1909	34	62.4
1910	61	49.6
1911	34	49.6
1912	32	49.6
1913	31	49.6
1914	52	49.6
1915	57	49.6
1916	45	49.6
1917	72	49.6
1918	62	49.6
1920	60	79.1
1921	67	79.1
1922	101	79.1
1923	55	79.1
1924	104	79.1
1925	76	79.1
1926	103	79.1
1927	64	79.1
1928	98	79.1
1929	63	79.1
1930	73	84.5
1931	74	84.5
1932	84	84.5
1933	101	84.5
1934	96	84.5
1935	84	84.5
1936	89	84.5
1937	85	84.5
1938	83	84.5
1939	76	84.5
1940	82	77
1941	48	77
1942	89	77
1943	90	77
1944	62	77
1946	71	77
1947	100	77
1948	82	77
1949	69	77
1950	50	62.6
1951	66	62.6
1952	53	62.6
1953	66	62.6
1954	53	62.6
1955	49	62.6
1956	85	62.6
1957	66	62.6
1958	73	62.6
1959	65	62.6
1960	87	65.3
1961	65	65.3
1962	77	65.3
1963	59	65.3
1964	65	65.3
1965	47	65.3
1966	77	65.3
1967	48	65.3
1968	56	65.3
1969	72	65.3
1970	52	57.3
1971	55	57.3
1972	43	57.3
1973	59	57.3
1974	64	57.3
1975	55	57.3
1976	38	57.3
1977	62	57.3
1978	72	57.3
1979	73	57.3
1980	77	60
1981	63	60
1982	46	60
1984	43	60
1985	64	60
1986	54	60
1987	59	60
1988	62	60
1989	72	60
1990	59	64.3
1991	55	64.3
1992	52	64.3
1993	70	64.3
1994	79	64.3
1995	70	64.3
1996	79	64.3
1997	74	64.3
1998	54	64.3
1999	51	64.3
2000	92	81.7
2001	96	81.7
2002	93	81.7
2003	89	81.7
2004	74	81.7
2005	69	81.7
2006	73	81.7
2007	83	81.7
2008	73	81.7
2009	75	81.7
2010	76	82
2011	90	82
2012	86	82
2013	82	82
2014	76	82
2015	86	82
2016	67	82
2017	81	82
2018	95	82
2019	81	82
2020	115	90.6
2021	78	90.6
2022	77	90.6
2023	71	90.6
2024	112	90.6
2025	85	90.6
2026	96	90.6

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

First to last qualifying date each year at Prescott
Year	First date	Last date
1899	1899-06-08	1899-09-29
1900	1900-05-25	1900-09-08
1901	1901-06-16	1901-09-18
1902	1902-06-10	1902-09-07
1903	1903-06-23	1903-09-04
1905	1905-05-18	1905-10-15
1906	1906-05-17	1906-09-23
1909	1909-06-02	1909-09-24
1910	1910-05-27	1910-10-09
1911	1911-06-18	1911-10-18
1912	1912-06-01	1912-09-19
1913	1913-06-18	1913-09-20
1914	1914-05-21	1914-09-18
1915	1915-05-31	1915-10-08
1916	1916-06-06	1916-09-07
1917	1917-06-08	1917-10-10
1918	1918-06-03	1918-10-15
1920	1920-05-20	1920-09-30
1921	1921-04-30	1921-10-20
1922	1922-05-22	1922-10-03
1923	1923-05-07	1923-09-09
1924	1924-05-17	1924-10-01
1925	1925-04-15	1925-09-16
1926	1926-05-22	1926-10-18
1927	1927-05-14	1927-09-06
1928	1928-04-30	1928-10-09
1929	1929-05-10	1929-10-07
1930	1930-05-27	1930-09-20
1931	1931-05-14	1931-09-28
1932	1932-05-16	1932-09-17
1933	1933-05-27	1933-10-01
1934	1934-05-05	1934-10-08
1935	1935-06-02	1935-09-19
1936	1936-04-15	1936-10-11
1937	1937-05-13	1937-09-25
1938	1938-05-13	1938-09-28
1939	1939-05-26	1939-09-02
1940	1940-05-09	1940-09-09
1941	1941-06-13	1941-09-11
1942	1942-05-20	1942-10-05
1943	1943-04-30	1943-09-22
1944	1944-06-06	1944-10-11
1946	1946-06-02	1946-09-25
1947	1947-05-01	1947-10-04
1948	1948-04-16	1948-09-15
1949	1949-04-23	1949-09-27
1950	1950-05-30	1950-10-13
1951	1951-05-25	1951-09-18
1952	1952-06-08	1952-09-18
1953	1953-06-10	1953-09-24
1954	1954-05-19	1954-09-21
1955	1955-05-29	1955-09-14
1956	1956-05-17	1956-09-28
1957	1957-06-01	1957-09-30
1958	1958-05-18	1958-09-21
1959	1959-05-12	1959-10-24
1960	1960-05-10	1960-09-27
1961	1961-06-07	1961-09-27
1962	1962-04-18	1962-09-20
1963	1963-05-06	1963-10-01
1964	1964-05-15	1964-10-04
1965	1965-06-21	1965-10-11
1966	1966-05-19	1966-09-24
1967	1967-05-21	1967-09-23
1968	1968-05-28	1968-09-16
1969	1969-05-29	1969-09-30
1970	1970-05-17	1970-09-11
1971	1971-06-15	1971-09-17
1972	1972-06-21	1972-10-01
1973	1973-05-30	1973-09-14
1974	1974-05-26	1974-09-11
1975	1975-06-02	1975-10-06
1976	1976-06-19	1976-09-01
1977	1977-05-31	1977-09-10
1978	1978-05-14	1978-10-04
1979	1979-06-12	1979-10-07
1980	1980-06-09	1980-10-11
1981	1981-06-06	1981-08-31
1982	1982-06-17	1982-09-26
1984	1984-05-10	1984-09-06
1985	1985-06-07	1985-09-01
1986	1986-05-26	1986-09-08
1987	1987-06-03	1987-10-07
1988	1988-06-03	1988-09-10
1989	1989-05-07	1989-09-27
1990	1990-06-04	1990-09-15
1991	1991-06-09	1991-10-16
1992	1992-06-05	1992-10-13
1993	1993-05-12	1993-10-05
1994	1994-05-30	1994-09-29
1995	1995-06-12	1995-09-14
1996	1996-04-27	1996-10-11
1997	1997-05-15	1997-10-02
1998	1998-06-20	1998-09-19
1999	1999-06-13	1999-09-14
2000	2000-04-27	2000-10-07
2001	2001-05-09	2001-10-01
2002	2002-05-14	2002-09-26
2003	2003-05-21	2003-10-22
2004	2004-06-01	2004-09-16
2005	2005-05-20	2005-09-27
2006	2006-05-13	2006-09-02
2007	2007-05-11	2007-09-16
2008	2008-05-19	2008-09-25
2009	2009-05-09	2009-09-30
2010	2010-06-05	2010-10-01
2011	2011-05-06	2011-10-01
2012	2012-04-23	2012-10-04
2013	2013-05-14	2013-09-18
2014	2014-05-17	2014-09-26
2015	2015-05-30	2015-10-15
2016	2016-05-14	2016-09-20
2017	2017-05-05	2017-09-14
2018	2018-05-07	2018-09-30
2019	2019-06-10	2019-09-14
2020	2020-04-30	2020-10-16
2021	2021-05-07	2021-09-23
2022	2022-05-15	2022-09-12
2023	2023-05-01	2023-10-21
2024	2024-05-29	2024-10-14
2025	2025-05-22	2025-09-26
2026	2026-03-19	2026-09-13

Every Fixed Threshold

Fixed thresholds at Prescott
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	122	115	2020	96
35 C (95 F): Days	117	35	1905	20
40 C (104 F): Days	7	1	1900	1
90 F (32.2 C): Days	122	81	1933	64
100 F (37.8 C): Days	51	10	2021	1
0 C (32 F): Ice days (max	68	10	1937	1
0 C (32 F): Frost days (min	114	201	1903	59
-10 C (14 F): Days with min	112	44	1924	10
-20 C (-4 F): Days with min	22	10	1937	1
20 C (68 F): Tropical nights (min	51	9	2007	4
10 mm (0.39 in): Days with 10 mm or more rain	123	29	1965	14
25 mm (0.98 in): Days with 25 mm or more rain	120	12	1965	3
50 mm (1.97 in): Days with 50 mm or more rain	38	3	1927	1
100 mm (3.94 in): Days with 100 mm or more rain	1	0	n/a	1
10 cm (3.9 in): Days with 10 cm or more snowfall	91	9	1949	1
25 cm (9.8 in): Days with 25 cm or more snowfall	21	3	1902	1
50 cm (19.7 in): Days with 50 cm or more snowfall	1	1	1930	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1899.

Download the Data

Data for Prescott 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).

Prescott Threshold Days by Year (USC00026796)

Key Facts for Prescott Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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