Caldwell Threshold Days by Year (USC00101380)

18 fixed thresholds counted per year at Caldwell (USC00101380): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Caldwell Thresholds

Caldwell: days with a maximum temperature at or above 30 C (86 F) in 92 years, most in 1934 with 103.
Caldwell: days with a maximum temperature at or above 35 C (95 F) in 92 years, most in 1967 with 60.
Caldwell: days with a maximum temperature at or above 90 F (32.2 C) in 92 years, most in 1967 with 86.
Caldwell: nights with a minimum temperature at or below 0 C (32 F) in 92 years, most in 1929 with 186.
18 fixed thresholds have at least one qualifying day at Caldwell.

Days at or above 30 C (86 F)

92 years with a qualifying day

Days per year at Caldwell with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 103 in 1934.

Days at or above 30 C (86 F) per year at Caldwell
Year	Days	Decade average
1905	69	59.8
1906	77	59.8
1907	50	59.8
1908	54	59.8
1909	49	59.8
1910	63	67.6
1911	58	67.6
1912	41	67.6
1913	61	67.6
1914	71	67.6
1915	56	67.6
1916	66	67.6
1917	81	67.6
1918	92	67.6
1919	87	67.6
1920	70	73.8
1921	73	73.8
1922	91	73.8
1923	69	73.8
1924	82	73.8
1925	69	73.8
1926	74	73.8
1927	61	73.8
1928	73	73.8
1929	76	73.8
1930	78	84.8
1931	89	84.8
1932	80	84.8
1933	84	84.8
1934	103	84.8
1935	81	84.8
1936	91	84.8
1937	84	84.8
1938	82	84.8
1939	76	84.8
1940	89	68.3
1941	62	68.3
1942	61	68.3
1943	68	68.3
1944	61	68.3
1945	67	68.3
1946	68	68.3
1947	67	68.3
1948	55	68.3
1949	85	68.3
1950	54	64.7
1951	57	64.7
1952	68	64.7
1953	60	64.7
1954	53	64.7
1955	60	64.7
1956	72	64.7
1957	72	64.7
1958	87	64.7
1959	64	64.7
1960	90	82.2
1961	88	82.2
1962	50	82.2
1963	96	82.2
1964	69	82.2
1965	61	82.2
1966	95	82.2
1967	101	82.2
1968	79	82.2
1969	93	82.2
1970	95	80.8
1971	82	80.8
1972	83	80.8
1973	90	80.8
1974	75	80.8
1975	81	80.8
1976	67	80.8
1977	81	80.8
1978	69	80.8
1979	85	80.8
1980	64	75.9
1981	78	75.9
1982	59	75.9
1983	61	75.9
1984	77	75.9
1985	62	75.9
1986	86	75.9
1987	95	75.9
1988	97	75.9
1989	80	75.9
1990	90	80.3
1991	79	80.3
1992	86	80.3
1993	58	80.3
1994	96	80.3
1995	75	80.3
1996	78	80.3

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

First to last qualifying date each year at Caldwell
Year	First date	Last date
1905	1905-05-16	1905-10-04
1906	1906-04-21	1906-10-02
1907	1907-05-31	1907-09-11
1908	1908-05-23	1908-09-21
1909	1909-06-01	1909-09-24
1910	1910-04-18	1910-10-09
1911	1911-04-25	1911-09-02
1912	1912-06-05	1912-08-26
1913	1913-04-26	1913-09-17
1914	1914-05-07	1914-10-15
1915	1915-04-20	1915-09-21
1916	1916-04-26	1916-09-21
1917	1917-05-14	1917-09-21
1918	1918-05-02	1918-09-29
1919	1919-05-14	1919-09-15
1920	1920-06-04	1920-10-05
1921	1921-06-06	1921-08-31
1922	1922-05-24	1922-09-26
1923	1923-05-08	1923-09-14
1924	1924-05-02	1924-09-16
1925	1925-05-06	1925-09-03
1926	1926-04-28	1926-09-09
1927	1927-04-24	1927-10-16
1928	1928-05-05	1928-09-24
1929	1929-05-20	1929-09-17
1930	1930-05-27	1930-09-21
1931	1931-05-01	1931-09-27
1932	1932-05-12	1932-10-02
1933	1933-05-25	1933-10-07
1934	1934-04-12	1934-10-01
1935	1935-05-21	1935-10-02
1936	1936-04-16	1936-09-22
1937	1937-05-03	1937-09-18
1938	1938-05-24	1938-09-23
1939	1939-04-28	1939-09-23
1940	1940-05-09	1940-09-12
1941	1941-05-11	1941-09-10
1942	1942-04-21	1942-09-05
1943	1943-04-18	1943-10-02
1944	1944-05-14	1944-09-12
1945	1945-05-03	1945-09-14
1946	1946-04-25	1946-09-30
1947	1947-05-02	1947-09-25
1948	1948-05-16	1948-09-14
1949	1949-05-08	1949-09-27
1950	1950-06-29	1950-09-07
1951	1951-05-22	1951-09-19
1952	1952-05-24	1952-09-26
1953	1953-05-06	1953-09-19
1954	1954-05-15	1954-09-10
1955	1955-06-07	1955-09-13
1956	1956-05-17	1956-09-26
1957	1957-05-29	1957-09-30
1958	1958-05-10	1958-09-11
1959	1959-05-13	1959-09-13
1960	1960-05-10	1960-10-01
1961	1961-05-09	1961-09-15
1962	1962-04-14	1962-09-24
1963	1963-05-18	1963-10-03
1964	1964-05-16	1964-09-16
1965	1965-05-28	1965-08-27
1966	1966-05-02	1966-09-24
1967	1967-05-17	1967-09-29
1968	1968-04-29	1968-09-13
1969	1969-05-07	1969-09-13
1970	1970-05-04	1970-09-19
1971	1971-05-02	1971-09-12
1972	1972-05-14	1972-09-18
1973	1973-05-13	1973-09-13
1974	1974-05-25	1974-09-25
1975	1975-05-14	1975-09-28
1976	1976-05-13	1976-09-10
1977	1977-04-23	1977-09-13
1978	1978-05-14	1978-09-26
1979	1979-05-14	1979-09-23
1980	1980-05-04	1980-09-26
1981	1981-05-29	1981-09-19
1982	1982-06-11	1982-09-09
1983	1983-05-24	1983-09-25
1984	1984-04-16	1984-10-09
1985	1985-05-22	1985-08-29
1986	1986-05-17	1986-09-08
1987	1987-04-22	1987-10-03
1988	1988-04-12	1988-10-06
1989	1989-05-06	1989-09-29
1990	1990-04-15	1990-10-01
1991	1991-06-02	1991-10-01
1992	1992-04-29	1992-10-02
1993	1993-05-10	1993-09-30
1994	1994-04-17	1994-09-27
1995	1995-05-29	1995-09-19
1996	1996-06-02	1996-10-10

Every Fixed Threshold

Fixed thresholds at Caldwell
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	92	103	1934	78
35 C (95 F): Days	92	60	1967	39
40 C (104 F): Days	46	10	1960	6
90 F (32.2 C): Days	92	86	1967	64
100 F (37.8 C): Days	83	32	1961	19
110 F (43.3 C): Days	2	1	1960	1
0 C (32 F): Ice days (max	91	72	1985	8
0 C (32 F): Frost days (min	92	186	1929	113
-10 C (14 F): Days with min	91	58	1985	8
-20 C (-4 F): Days with min	41	14	1985	1
-30 C (-22 F): Days with min	7	3	1924	1
20 C (68 F): Tropical nights (min	60	13	1994	4
25 C (77 F): Days with min	3	1	1984	1
10 mm (0.39 in): Days with 10 mm or more rain	89	13	1980	9
25 mm (0.98 in): Days with 25 mm or more rain	19	3	1908	1
50 mm (1.97 in): Days with 50 mm or more rain	1	1	1913	1
10 cm (3.9 in): Days with 10 cm or more snowfall	42	4	1957	2
25 cm (9.8 in): Days with 25 cm or more snowfall	3	1	1912	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1905.

Download the Data

Data for Caldwell 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 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Caldwell Threshold Days by Year (USC00101380)

Key Facts for Caldwell Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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