Castle Dale Threshold Days by Year (USC00421214)

16 fixed thresholds counted per year at Castle Dale (USC00421214): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Castle Dale Thresholds

Castle Dale: days with a maximum temperature at or above 30 C (86 F) in 96 years, most in 2018 with 102.
Castle Dale: days with a maximum temperature at or above 90 F (32.2 C) in 96 years, most in 2025 with 68.
Castle Dale: days with a maximum temperature at or below 0 C (32 F) in 95 years, most in 1932 with 72.
Castle Dale: nights with a minimum temperature at or below 0 C (32 F) in 95 years, most in 1903 with 233.
16 fixed thresholds have at least one qualifying day at Castle Dale.

Days at or above 30 C (86 F)

96 years with a qualifying day

Days per year at Castle Dale with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 102 in 2018.

Days at or above 30 C (86 F) per year at Castle Dale
Year	Days	Decade average
1902	77	59.8
1903	64	59.8
1907	45	59.8
1909	53	59.8
1913	42	65.3
1917	72	65.3
1918	61	65.3
1919	86	65.3
1920	53	31.9
1921	44	31.9
1922	54	31.9
1923	21	31.9
1924	37	31.9
1925	19	31.9
1926	28	31.9
1927	22	31.9
1928	22	31.9
1929	19	31.9
1930	23	33.7
1931	41	33.7
1932	30	33.7
1933	32	33.7
1934	47	33.7
1935	35	33.7
1936	38	33.7
1937	35	33.7
1938	22	33.7
1956	82	72.5
1957	46	72.5
1958	81	72.5
1959	81	72.5
1960	81	64.9
1961	67	64.9
1962	69	64.9
1963	66	64.9
1964	60	64.9
1965	45	64.9
1966	76	64.9
1967	67	64.9
1968	53	64.9
1971	75	66.9
1972	57	66.9
1973	61	66.9
1974	80	66.9
1975	45	66.9
1976	53	66.9
1977	80	66.9
1978	76	66.9
1979	75	66.9
1980	69	61.3
1981	77	61.3
1982	52	61.3
1983	64	61.3
1984	74	61.3
1985	69	61.3
1986	51	61.3
1987	35	61.3
1988	68	61.3
1989	54	61.3
1990	66	60.8
1991	45	60.8
1992	53	60.8
1993	58	60.8
1994	91	60.8
1995	56	60.8
1996	80	60.8
1997	46	60.8
1998	56	60.8
1999	57	60.8
2000	74	77
2001	91	77
2002	82	77
2003	92	77
2004	57	77
2005	58	77
2006	81	77
2007	89	77
2008	79	77
2009	67	77
2010	73	80.5
2011	71	80.5
2012	98	80.5
2013	55	80.5
2014	74	80.5
2015	88	80.5
2016	81	80.5
2017	87	80.5
2018	102	80.5
2019	76	80.5
2020	101	87.7
2021	96	87.7
2022	84	87.7
2023	67	87.7
2024	91	87.7
2025	87	87.7
2026	88	87.7

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

First to last qualifying date each year at Castle Dale
Year	First date	Last date
1902	1902-06-04	1902-09-14
1903	1903-05-12	1903-09-04
1907	1907-05-11	1907-08-24
1909	1909-06-03	1909-09-10
1913	1913-05-11	1913-08-30
1917	1917-06-09	1917-09-07
1918	1918-06-03	1918-09-21
1919	1919-05-18	1919-09-12
1920	1920-05-20	1920-09-03
1921	1921-06-09	1921-08-12
1922	1922-06-05	1922-09-15
1923	1923-07-01	1923-08-09
1924	1924-06-11	1924-09-07
1925	1925-05-19	1925-08-05
1926	1926-06-05	1926-08-26
1927	1927-05-15	1927-08-24
1928	1928-06-06	1928-08-21
1929	1929-06-21	1929-08-28
1930	1930-06-07	1930-08-20
1931	1931-06-21	1931-09-07
1932	1932-06-20	1932-08-24
1933	1933-06-09	1933-09-04
1934	1934-05-21	1934-09-04
1935	1935-06-07	1935-08-30
1936	1936-06-12	1936-08-28
1937	1937-06-16	1937-09-17
1938	1938-06-02	1938-08-24
1956	1956-05-17	1956-09-26
1957	1957-06-03	1957-08-19
1958	1958-05-19	1958-09-11
1959	1959-05-12	1959-09-12
1960	1960-05-10	1960-09-12
1961	1961-05-10	1961-08-28
1962	1962-05-06	1962-09-19
1963	1963-06-12	1963-09-30
1964	1964-05-16	1964-09-12
1965	1965-06-07	1965-08-28
1966	1966-05-06	1966-09-24
1967	1967-05-22	1967-09-07
1968	1968-05-28	1968-09-10
1971	1971-06-14	1971-09-13
1972	1972-05-15	1972-08-22
1973	1973-05-17	1973-09-19
1974	1974-05-26	1974-09-10
1975	1975-06-06	1975-09-06
1976	1976-05-14	1976-09-05
1977	1977-05-31	1977-09-09
1978	1978-05-14	1978-09-28
1979	1979-06-10	1979-10-05
1980	1980-06-09	1980-10-01
1981	1981-06-05	1981-09-19
1982	1982-06-12	1982-09-23
1983	1983-05-26	1983-09-16
1984	1984-05-12	1984-09-15
1985	1985-06-06	1985-09-01
1986	1986-06-04	1986-09-06
1987	1987-06-04	1987-09-01
1988	1988-06-03	1988-09-09
1989	1989-05-06	1989-09-06
1990	1990-06-04	1990-09-15
1991	1991-06-10	1991-09-04
1992	1992-06-19	1992-09-23
1993	1993-06-14	1993-09-20
1994	1994-05-29	1994-09-28
1995	1995-06-12	1995-09-16
1996	1996-05-12	1996-09-10
1997	1997-05-16	1997-08-30
1998	1998-06-02	1998-10-11
1999	1999-05-22	1999-09-13
2000	2000-04-27	2000-09-16
2001	2001-05-23	2001-10-01
2002	2002-05-18	2002-09-04
2003	2003-05-22	2003-10-22
2004	2004-05-04	2004-09-17
2005	2005-05-20	2005-09-20
2006	2006-05-16	2006-09-13
2007	2007-04-29	2007-09-13
2008	2008-05-20	2008-09-27
2009	2009-05-17	2009-09-27
2010	2010-06-04	2010-10-02
2011	2011-06-05	2011-09-29
2012	2012-04-22	2012-09-22
2013	2013-05-13	2013-09-07
2014	2014-05-27	2014-09-25
2015	2015-05-30	2015-10-14
2016	2016-06-02	2016-09-19
2017	2017-05-05	2017-09-11
2018	2018-05-09	2018-09-29
2019	2019-06-10	2019-09-26
2020	2020-05-28	2020-10-05
2021	2021-04-30	2021-09-27
2022	2022-05-15	2022-09-26
2023	2023-06-05	2023-09-09
2024	2024-06-01	2024-10-06
2025	2025-05-22	2025-09-10
2026	2026-03-19	2026-08-28

Every Fixed Threshold

Fixed thresholds at Castle Dale
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	96	102	2018	88
35 C (95 F): Days	87	33	2020	34
40 C (104 F): Days	3	1	1903	1
90 F (32.2 C): Days	96	68	2025	64
100 F (37.8 C): Days	32	8	2002	12
0 C (32 F): Ice days (max	95	72	1932	4
0 C (32 F): Frost days (min	95	233	1903	97
-10 C (14 F): Days with min	95	120	1903	24
-20 C (-4 F): Days with min	76	48	1933	2
-30 C (-22 F): Days with min	14	10	1937	1
20 C (68 F): Tropical nights (min	6	5	1909	1
10 mm (0.39 in): Days with 10 mm or more rain	86	14	1965	2
25 mm (0.98 in): Days with 25 mm or more rain	29	3	1957	1
50 mm (1.97 in): Days with 50 mm or more rain	1	1	2007	1
10 cm (3.9 in): Days with 10 cm or more snowfall	49	5	2023	1
25 cm (9.8 in): Days with 25 cm or more snowfall	2	1	1982	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1902.

Download the Data

Data for Castle Dale 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).

Castle Dale Threshold Days by Year (USC00421214)

Key Facts for Castle Dale Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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