Zion Np Threshold Days by Year (USC00429717)

18 fixed thresholds counted per year at Zion Np (USC00429717): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Zion Np Thresholds

Zion Np: days with a maximum temperature at or above 30 C (86 F) in 111 years, most in 2001 with 162.
Zion Np: days with a maximum temperature at or above 35 C (95 F) in 111 years, most in 2024 with 118.
Zion Np: days with a maximum temperature at or above 90 F (32.2 C) in 111 years, most in 2001 with 141.
Zion Np: days with a maximum temperature at or above 100 F (37.8 C) in 110 years, most in 2024 with 76.
18 fixed thresholds have at least one qualifying day at Zion Np.

Days at or above 30 C (86 F)

111 years with a qualifying day

Days per year at Zion Np with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 162 in 2001.

Days at or above 30 C (86 F) per year at Zion Np
Year	Days	Decade average
1904	158	133.7
1906	134	133.7
1908	109	133.7
1911	121	79.2
1915	33	79.2
1916	27	79.2
1918	100	79.2
1919	115	79.2
1920	88	108
1921	105	108
1926	117	108
1927	106	108
1928	128	108
1929	104	108
1930	107	123.2
1931	117	123.2
1932	101	123.2
1933	124	123.2
1934	150	123.2
1935	124	123.2
1936	136	123.2
1937	124	123.2
1938	132	123.2
1939	117	123.2
1940	129	133.9
1941	107	133.9
1942	131	133.9
1943	134	133.9
1944	127	133.9
1945	131	133.9
1946	147	133.9
1947	155	133.9
1948	145	133.9
1949	133	133.9
1950	152	137.7
1951	128	137.7
1952	152	137.7
1953	133	137.7
1954	149	137.7
1955	133	137.7
1956	147	137.7
1957	116	137.7
1958	141	137.7
1959	126	137.7
1960	138	128.7
1961	123	128.7
1962	132	128.7
1963	135	128.7
1964	139	128.7
1965	116	128.7
1966	135	128.7
1967	118	128.7
1968	114	128.7
1969	137	128.7
1970	115	127.3
1971	116	127.3
1972	116	127.3
1973	131	127.3
1974	146	127.3
1975	135	127.3
1976	122	127.3
1977	120	127.3
1978	138	127.3
1979	134	127.3
1980	126	123.1
1981	120	123.1
1982	102	123.1
1983	116	123.1
1984	124	123.1
1985	100	123.1
1986	117	123.1
1987	133	123.1
1988	145	123.1
1989	148	123.1
1990	132	132.2
1991	142	132.2
1992	147	132.2
1993	127	132.2
1994	138	132.2
1995	111	132.2
1996	145	132.2
1997	132	132.2
1998	108	132.2
1999	140	132.2
2000	150	144.5
2001	162	144.5
2002	135	144.5
2003	156	144.5
2004	148	144.5
2005	131	144.5
2006	132	144.5
2007	147	144.5
2008	141	144.5
2009	143	144.5
2010	125	131.9
2011	129	131.9
2012	158	131.9
2013	133	131.9
2014	147	131.9
2015	123	131.9
2016	115	131.9
2017	123	131.9
2018	141	131.9
2019	125	131.9
2020	158	136.1
2021	107	136.1
2022	137	136.1
2023	123	136.1
2024	152	136.1
2025	135	136.1
2026	141	136.1

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

First to last qualifying date each year at Zion Np
Year	First date	Last date
1904	1904-02-25	1904-10-31
1906	1906-04-20	1906-10-30
1908	1908-03-16	1908-10-10
1911	1911-05-02	1911-10-18
1915	1915-05-11	1915-11-05
1916	1916-05-05	1916-09-19
1918	1918-04-23	1918-10-13
1919	1919-04-17	1919-09-26
1920	1920-05-16	1920-10-06
1921	1921-06-08	1921-11-03
1926	1926-04-26	1926-10-26
1927	1927-04-25	1927-10-27
1928	1928-04-30	1928-10-08
1929	1929-05-09	1929-10-08
1930	1930-04-06	1930-09-20
1931	1931-05-06	1931-10-16
1932	1932-05-17	1932-10-16
1933	1933-05-27	1933-10-24
1934	1934-04-10	1934-10-28
1935	1935-05-22	1935-10-10
1936	1936-04-13	1936-10-13
1937	1937-05-04	1937-10-26
1938	1938-05-10	1938-10-15
1939	1939-04-27	1939-09-23
1940	1940-05-02	1940-10-20
1941	1941-05-08	1941-10-11
1942	1942-05-08	1942-10-09
1943	1943-04-23	1943-10-17
1944	1944-05-12	1944-10-23
1945	1945-04-19	1945-10-10
1946	1946-04-16	1946-09-30
1947	1947-04-14	1947-10-20
1948	1948-04-28	1948-10-23
1949	1949-04-22	1949-10-05
1950	1950-04-14	1950-10-29
1951	1951-04-13	1951-10-11
1952	1952-05-02	1952-10-28
1953	1953-04-20	1953-10-10
1954	1954-04-17	1954-10-22
1955	1955-05-05	1955-10-18
1956	1956-03-24	1956-10-10
1957	1957-05-05	1957-10-01
1958	1958-05-04	1958-10-18
1959	1959-04-04	1959-10-26
1960	1960-04-05	1960-10-07
1961	1961-04-30	1961-10-15
1962	1962-04-13	1962-10-04
1963	1963-04-13	1963-10-10
1964	1964-05-14	1964-10-15
1965	1965-04-30	1965-10-12
1966	1966-04-01	1966-10-10
1967	1967-05-16	1967-10-11
1968	1968-05-19	1968-10-28
1969	1969-04-21	1969-10-02
1970	1970-05-04	1970-10-02
1971	1971-05-14	1971-10-14
1972	1972-05-03	1972-10-03
1973	1973-05-10	1973-10-19
1974	1974-05-06	1974-10-20
1975	1975-05-11	1975-10-19
1976	1976-05-11	1976-10-10
1977	1977-04-23	1977-10-17
1978	1978-05-13	1978-10-17
1979	1979-05-13	1979-10-11
1980	1980-04-18	1980-10-11
1981	1981-04-29	1981-10-01
1982	1982-04-28	1982-09-25
1983	1983-05-22	1983-09-22
1984	1984-04-16	1984-09-29
1985	1985-04-14	1985-10-05
1986	1986-04-21	1986-09-19
1987	1987-04-16	1987-10-11
1988	1988-04-07	1988-10-24
1989	1989-04-06	1989-10-12
1990	1990-04-15	1990-10-28
1991	1991-05-08	1991-10-20
1992	1992-04-25	1992-10-21
1993	1993-05-03	1993-10-05
1994	1994-04-16	1994-10-10
1995	1995-05-20	1995-10-18
1996	1996-04-08	1996-10-14
1997	1997-03-20	1997-10-03
1998	1998-04-24	1998-10-14
1999	1999-04-19	1999-11-14
2000	2000-04-08	2000-10-09
2001	2001-04-25	2001-10-27
2002	2002-04-01	2002-10-09
2003	2003-05-13	2003-10-25
2004	2004-03-20	2004-10-16
2005	2005-05-15	2005-10-08
2006	2006-04-30	2006-10-05
2007	2007-03-16	2007-11-07
2008	2008-04-14	2008-10-30
2009	2009-04-20	2009-09-30
2010	2010-05-16	2010-10-17
2011	2011-05-05	2011-10-23
2012	2012-04-10	2012-10-11
2013	2013-03-14	2013-10-02
2014	2014-04-11	2014-10-24
2015	2015-05-01	2015-10-16
2016	2016-05-05	2016-09-20
2017	2017-05-04	2017-10-18
2018	2018-04-26	2018-10-02
2019	2019-04-20	2019-10-17
2020	2020-04-28	2020-11-03
2021	2021-04-05	2021-10-05
2022	2022-03-27	2022-10-17
2023	2023-04-12	2023-10-22
2024	2024-04-22	2024-10-17
2025	2025-03-27	2025-10-09
2026	2026-03-19	2026-09-28

Every Fixed Threshold

Fixed thresholds at Zion Np
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	111	162	2001	141
35 C (95 F): Days	111	118	2024	88
40 C (104 F): Days	103	38	2020	30
45 C (113 F): Days	8	4	2021	2
90 F (32.2 C): Days	111	141	2001	119
100 F (37.8 C): Days	110	76	2024	65
110 F (43.3 C): Days	38	8	2021	1
0 C (32 F): Ice days (max	31	9	1937	1
0 C (32 F): Frost days (min	108	139	1911	21
-10 C (14 F): Days with min	86	22	1949	3
-20 C (-4 F): Days with min	3	3	1937	1
20 C (68 F): Tropical nights (min	108	75	2024	59
25 C (77 F): Days with min	65	16	2024	6
10 mm (0.39 in): Days with 10 mm or more rain	101	27	2019	10
25 mm (0.98 in): Days with 25 mm or more rain	75	6	1980	1
50 mm (1.97 in): Days with 50 mm or more rain	14	1	1916	1
10 cm (3.9 in): Days with 10 cm or more snowfall	47	5	1949	1
25 cm (9.8 in): Days with 25 cm or more snowfall	2	1	1937	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1904.

Download the Data

Data for Zion Np 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).

Zion Np Threshold Days by Year (USC00429717)

Key Facts for Zion Np Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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