Curtis Threshold Days by Year (USC00252100)

21 fixed thresholds counted per year at Curtis (USC00252100): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Curtis Thresholds

Curtis: days with 10 mm (0.39 in) or more of precipitation in 98 years, most in 1915 with 35.
Curtis: days with 25 mm (0.98 in) or more of precipitation in 98 years, most in 1930 with 12.
Curtis: nights with a minimum temperature at or below 0 C (32 F) in 94 years, most in 1917 with 193.
Curtis: nights with a minimum temperature at or below -10 C (14 F) in 94 years, most in 1955 with 85.
21 fixed thresholds have at least one qualifying day at Curtis.

Days at or above 30 C (86 F)

92 years with a qualifying day

Days per year at Curtis with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 112 in 1922.

Days at or above 30 C (86 F) per year at Curtis
Year	Days	Decade average
1897	87	80
1898	73	80
1905	38	38
1911	96	79
1912	69	79
1913	94	79
1914	90	79
1915	33	79
1916	84	79
1917	60	79
1918	101	79
1919	84	79
1920	77	80.6
1922	112	80.6
1923	55	80.6
1924	77	80.6
1928	82	80.6
1930	70	95.6
1931	103	95.6
1932	90	95.6
1933	103	95.6
1934	105	95.6
1935	79	95.6
1936	103	95.6
1937	101	95.6
1938	106	95.6
1940	100	82.6
1941	91	82.6
1942	76	82.6
1943	86	82.6
1944	69	82.6
1946	80	82.6
1947	83	82.6
1948	81	82.6
1949	77	82.6
1950	53	84.2
1951	48	84.2
1952	93	84.2
1953	96	84.2
1954	100	84.2
1955	93	84.2
1956	111	84.2
1957	78	84.2
1958	78	84.2
1959	92	84.2
1960	84	80
1961	81	80
1962	78	80
1963	101	80
1964	90	80
1965	74	80
1966	85	80
1967	65	80
1968	81	80
1969	61	80
1970	94	84
1971	82	84
1972	80	84
1973	75	84
1974	77	84
1975	86	84
1976	80	84
1977	78	84
1978	104	84
1980	101	78.7
1981	79	78.7
1986	69	78.7
1987	79	78.7
1988	81	78.7
1989	63	78.7
1990	80	57.2
1991	72	57.2
1993	37	57.2
1995	62	57.2
1996	41	57.2
1999	51	57.2
2000	78	80.3
2001	79	80.3
2002	84	80.3
2011	79	89.3
2012	110	89.3
2013	92	89.3
2014	86	89.3
2015	96	89.3
2019	73	89.3
2020	102	92.9
2021	89	92.9
2022	109	92.9
2023	83	92.9
2024	88	92.9
2025	90	92.9
2026	89	92.9

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

First to last qualifying date each year at Curtis
Year	First date	Last date
1897	1897-04-26	1897-10-07
1898	1898-04-15	1898-09-27
1905	1905-04-30	1905-09-30
1911	1911-05-09	1911-09-28
1912	1912-05-19	1912-09-09
1913	1913-04-29	1913-09-08
1914	1914-04-20	1914-10-17
1915	1915-05-11	1915-10-31
1916	1916-04-11	1916-10-04
1917	1917-05-16	1917-09-02
1918	1918-05-08	1918-10-14
1919	1919-06-07	1919-10-01
1920	1920-06-06	1920-10-11
1922	1922-05-05	1922-10-26
1923	1923-04-19	1923-09-09
1924	1924-04-14	1924-10-02
1928	1928-04-03	1928-10-11
1930	1930-04-09	1930-09-23
1931	1931-05-13	1931-10-26
1932	1932-04-21	1932-10-11
1933	1933-05-17	1933-09-30
1934	1934-04-29	1934-10-19
1935	1935-06-09	1935-10-15
1936	1936-04-13	1936-10-12
1937	1937-05-17	1937-10-29
1938	1938-04-29	1938-10-16
1940	1940-04-14	1940-10-25
1941	1941-05-13	1941-09-21
1942	1942-05-25	1942-10-09
1943	1943-03-29	1943-09-19
1944	1944-05-12	1944-10-13
1946	1946-03-31	1946-09-27
1947	1947-05-03	1947-10-21
1948	1948-04-18	1948-09-21
1949	1949-04-24	1949-09-25
1950	1950-04-22	1950-10-30
1951	1951-04-28	1951-10-10
1952	1952-04-07	1952-10-24
1953	1953-04-21	1953-10-10
1954	1954-04-05	1954-10-09
1955	1955-04-26	1955-10-19
1956	1956-03-25	1956-10-12
1957	1957-06-03	1957-09-30
1958	1958-04-16	1958-10-19
1959	1959-04-06	1959-10-25
1960	1960-04-21	1960-10-05
1961	1961-04-19	1961-10-17
1962	1962-04-19	1962-10-14
1963	1963-03-29	1963-10-06
1964	1964-04-16	1964-10-16
1965	1965-04-22	1965-10-09
1966	1966-05-04	1966-10-13
1967	1967-04-29	1967-10-12
1968	1968-04-11	1968-10-30
1969	1969-05-25	1969-09-30
1970	1970-05-07	1970-10-05
1971	1971-06-16	1971-10-10
1972	1972-04-17	1972-10-02
1973	1973-05-18	1973-09-23
1974	1974-05-19	1974-09-26
1975	1975-04-26	1975-10-13
1976	1976-05-04	1976-10-02
1977	1977-04-10	1977-10-26
1978	1978-03-31	1978-10-20
1980	1980-04-19	1980-10-09
1981	1981-04-25	1981-09-30
1986	1986-03-28	1986-09-20
1987	1987-04-17	1987-10-04
1988	1988-04-07	1988-09-26
1989	1989-03-11	1989-10-15
1990	1990-04-23	1990-10-06
1991	1991-04-06	1991-10-23
1993	1993-05-15	1993-10-07
1995	1995-06-07	1995-10-17
1996	1996-04-03	1996-10-13
1999	1999-05-31	1999-09-26
2000	2000-04-14	2000-10-02
2001	2001-05-02	2001-10-03
2002	2002-04-15	2002-10-01
2011	2011-04-10	2011-10-05
2012	2012-03-18	2012-10-04
2013	2013-04-29	2013-10-09
2014	2014-04-10	2014-10-27
2015	2015-03-16	2015-10-21
2019	2019-04-20	2019-10-01
2020	2020-05-01	2020-10-10
2021	2021-04-05	2021-09-29
2022	2022-04-22	2022-10-22
2023	2023-04-12	2023-10-21
2024	2024-04-14	2024-10-11
2025	2025-04-12	2025-10-11
2026	2026-03-20	2026-09-07

Every Fixed Threshold

Fixed thresholds at Curtis
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	92	112	1922	89
35 C (95 F): Days	92	65	1936	20
40 C (104 F): Days	56	16	1936	3
45 C (113 F): Days	3	1	1952	1
90 F (32.2 C): Days	92	89	1934	61
100 F (37.8 C): Days	84	42	1936	8
110 F (43.3 C): Days	8	4	1954	1
0 C (32 F): Ice days (max	92	52	1993	4
0 C (32 F): Frost days (min	94	193	1917	87
-10 C (14 F): Days with min	94	85	1955	24
-20 C (-4 F): Days with min	92	24	1916	4
-30 C (-22 F): Days with min	27	4	1905	2
20 C (68 F): Tropical nights (min	88	22	1934	15
25 C (77 F): Days with min	10	2	1897	2
10 mm (0.39 in): Days with 10 mm or more rain	98	35	1915	15
25 mm (0.98 in): Days with 25 mm or more rain	98	12	1930	3
50 mm (1.97 in): Days with 50 mm or more rain	54	3	1897	1
100 mm (3.94 in): Days with 100 mm or more rain	5	1	1935	1
10 cm (3.9 in): Days with 10 cm or more snowfall	50	6	1931	1
25 cm (9.8 in): Days with 25 cm or more snowfall	9	2	1931	1
50 cm (19.7 in): Days with 50 cm or more snowfall	1	1	1931	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1897.

Download the Data

Data for Curtis 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).

Curtis Threshold Days by Year (USC00252100)

Key Facts for Curtis Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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