Dixon Wwtp Threshold Days by Year (USC00112348)

19 fixed thresholds counted per year at Dixon Wwtp (USC00112348): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Dixon Wwtp Thresholds

Dixon Wwtp: days with 10 mm (0.39 in) or more of precipitation in 126 years, most in 1998 with 45.
Dixon Wwtp: days with 25 mm (0.98 in) or more of precipitation in 126 years, most in 2018 with 17.
Dixon Wwtp: days with a maximum temperature at or above 30 C (86 F) in 124 years, most in 1934 with 86.
Dixon Wwtp: days with a maximum temperature at or below 0 C (32 F) in 124 years, most in 1978 with 78.
19 fixed thresholds have at least one qualifying day at Dixon Wwtp.

Days at or above 30 C (86 F)

124 years with a qualifying day

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

Days at or above 30 C (86 F) per year at Dixon Wwtp
Year	Days	Decade average
1893	71	58.3
1895	67	58.3
1896	47	58.3
1897	66	58.3
1898	42	58.3
1899	57	58.3
1900	64	47.7
1901	77	47.7
1902	30	47.7
1903	32	47.7
1906	53	47.7
1907	28	47.7
1908	50	47.7
1910	63	41.7
1911	60	41.7
1912	40	41.7
1913	59	41.7
1914	49	41.7
1915	11	41.7
1916	46	41.7
1917	17	41.7
1918	24	41.7
1919	48	41.7
1920	62	51.3
1921	78	51.3
1922	66	51.3
1923	50	51.3
1924	36	51.3
1925	57	51.3
1926	36	51.3
1927	47	51.3
1928	40	51.3
1929	41	51.3
1930	73	71.2
1931	75	71.2
1932	56	71.2
1933	75	71.2
1934	86	71.2
1935	59	71.2
1936	75	71.2
1937	73	71.2
1938	63	71.2
1939	77	71.2
1940	63	60.3
1941	71	60.3
1942	55	60.3
1943	73	60.3
1944	71	60.3
1945	41	60.3
1946	49	60.3
1947	67	60.3
1948	50	60.3
1949	63	60.3
1950	25	42.3
1951	17	42.3
1952	57	42.3
1953	58	42.3
1954	51	42.3
1955	61	42.3
1956	36	42.3
1957	38	42.3
1958	24	42.3
1959	56	42.3
1960	41	46.5
1961	41	46.5
1962	48	46.5
1963	59	46.5
1964	58	46.5
1965	42	46.5
1966	54	46.5
1967	28	46.5
1968	47	46.5
1969	47	46.5
1970	57	49.8
1971	73	49.8
1972	52	49.8
1973	51	49.8
1974	36	49.8
1975	59	49.8
1976	51	49.8
1977	48	49.8
1978	49	49.8
1979	22	49.8
1980	43	39.7
1981	18	39.7
1982	26	39.7
1983	55	39.7
1984	59	39.7
1985	40	39.7
1987	39	39.7
1988	55	39.7
1989	22	39.7
1990	15	21.9
1991	44	21.9
1992	14	21.9
1993	13	21.9
1994	20	21.9
1995	36	21.9
1996	8	21.9
1997	15	21.9
1998	25	21.9
1999	29	21.9
2000	16	30.2
2001	35	30.2
2002	51	30.2
2003	39	30.2
2004	12	30.2
2005	55	30.2
2006	26	30.2
2007	41	30.2
2008	17	30.2
2009	10	30.2
2012	66	40.2
2015	20	40.2
2016	41	40.2
2017	31	40.2
2018	43	40.2
2020	39	38.1
2021	52	38.1
2022	28	38.1
2023	33	38.1
2024	38	38.1
2025	55	38.1
2026	22	38.1

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

First to last qualifying date each year at Dixon Wwtp
Year	First date	Last date
1893	1893-04-07	1893-09-21
1895	1895-04-30	1895-09-25
1896	1896-05-05	1896-09-10
1897	1897-06-12	1897-10-15
1898	1898-06-03	1898-09-29
1899	1899-04-29	1899-10-23
1900	1900-05-12	1900-10-05
1901	1901-04-29	1901-09-28
1902	1902-05-02	1902-10-23
1903	1903-05-17	1903-09-15
1906	1906-05-15	1906-09-20
1907	1907-06-17	1907-09-20
1908	1908-05-18	1908-09-26
1910	1910-04-30	1910-10-17
1911	1911-05-10	1911-09-15
1912	1912-05-23	1912-09-11
1913	1913-05-03	1913-09-08
1914	1914-05-11	1914-08-24
1915	1915-04-21	1915-09-13
1916	1916-05-26	1916-09-12
1917	1917-05-19	1917-08-21
1918	1918-05-05	1918-08-25
1919	1919-05-30	1919-09-20
1920	1920-06-08	1920-10-11
1921	1921-05-18	1921-09-20
1922	1922-05-10	1922-10-05
1923	1923-05-29	1923-09-04
1924	1924-05-05	1924-10-18
1925	1925-05-22	1925-09-20
1926	1926-04-30	1926-09-18
1927	1927-06-19	1927-09-17
1928	1928-05-03	1928-09-09
1929	1929-05-28	1929-09-05
1930	1930-04-10	1930-09-23
1931	1931-05-27	1931-09-22
1932	1932-05-14	1932-09-19
1933	1933-06-02	1933-09-25
1934	1934-05-03	1934-09-25
1935	1935-06-13	1935-09-26
1936	1936-05-06	1936-09-15
1937	1937-05-29	1937-10-01
1938	1938-05-03	1938-10-17
1939	1939-05-05	1939-10-07
1940	1940-05-13	1940-10-05
1941	1941-05-15	1941-09-24
1942	1942-04-29	1942-09-19
1943	1943-05-05	1943-09-30
1944	1944-05-14	1944-09-18
1945	1945-05-26	1945-09-09
1946	1946-06-07	1946-09-27
1947	1947-06-09	1947-10-21
1948	1948-06-01	1948-09-20
1949	1949-05-03	1949-10-08
1950	1950-05-24	1950-10-18
1951	1951-05-01	1951-09-12
1952	1952-04-28	1952-09-30
1953	1953-05-25	1953-10-02
1954	1954-06-11	1954-10-03
1955	1955-05-21	1955-09-19
1956	1956-05-12	1956-09-13
1957	1957-06-15	1957-09-02
1958	1958-05-11	1958-09-24
1959	1959-05-02	1959-09-22
1960	1960-04-23	1960-09-08
1961	1961-05-13	1961-09-10
1962	1962-04-26	1962-10-15
1963	1963-05-08	1963-10-15
1964	1964-05-18	1964-09-20
1965	1965-05-07	1965-09-19
1966	1966-05-23	1966-09-11
1967	1967-05-18	1967-10-04
1968	1968-05-02	1968-09-21
1969	1969-05-27	1969-10-04
1970	1970-04-28	1970-09-21
1971	1971-05-15	1971-10-02
1972	1972-05-18	1972-09-20
1973	1973-06-08	1973-09-02
1974	1974-05-21	1974-09-11
1975	1975-05-18	1975-10-13
1976	1976-05-20	1976-10-03
1977	1977-04-17	1977-09-05
1978	1978-05-26	1978-09-20
1979	1979-05-09	1979-08-10
1980	1980-04-23	1980-09-09
1981	1981-06-08	1981-10-01
1982	1982-05-15	1982-10-07
1983	1983-06-12	1983-10-03
1984	1984-04-28	1984-09-25
1985	1985-04-19	1985-09-20
1987	1987-04-21	1987-08-22
1988	1988-05-31	1988-09-23
1989	1989-05-30	1989-08-23
1990	1990-06-13	1990-09-28
1991	1991-05-13	1991-09-16
1992	1992-05-02	1992-08-26
1993	1993-06-18	1993-08-31
1994	1994-05-24	1994-09-16
1995	1995-06-08	1995-08-31
1996	1996-05-18	1996-08-08
1997	1997-06-24	1997-10-07
1998	1998-05-15	1998-09-28
1999	1999-05-18	1999-09-06
2000	2000-06-02	2000-09-19
2001	2001-05-16	2001-09-08
2002	2002-04-16	2002-10-01
2003	2003-04-15	2003-09-12
2004	2004-04-17	2004-09-15
2005	2005-06-05	2005-10-05
2006	2006-05-25	2006-10-03
2007	2007-05-15	2007-10-08
2008	2008-06-06	2008-09-03
2009	2009-06-20	2009-08-10
2012	2012-05-19	2012-09-15
2015	2015-06-10	2015-09-08
2016	2016-05-25	2016-10-18
2017	2017-06-04	2017-09-27
2018	2018-05-25	2018-10-04
2020	2020-05-25	2020-09-03
2021	2021-05-02	2021-10-02
2022	2022-05-11	2022-09-21
2023	2023-05-31	2023-10-04
2024	2024-05-19	2024-10-06
2025	2025-05-16	2025-10-05
2026	2026-05-26	2026-07-28

Every Fixed Threshold

Fixed thresholds at Dixon Wwtp
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	124	86	1934	22
35 C (95 F): Days	98	33	1934	1
40 C (104 F): Days	5	6	1936	1
90 F (32.2 C): Days	121	64	1934	11
100 F (37.8 C): Days	30	15	1936	5
110 F (43.3 C): Days	1	1	1936	1
0 C (32 F): Ice days (max	124	78	1978	31
0 C (32 F): Frost days (min	123	164	1917	80
-10 C (14 F): Days with min	123	77	1978	30
-20 C (-4 F): Days with min	116	34	1985	4
-30 C (-22 F): Days with min	22	6	1982	3
20 C (68 F): Tropical nights (min	123	39	1931	20
25 C (77 F): Days with min	17	2	1953	1
10 mm (0.39 in): Days with 10 mm or more rain	126	45	1998	23
25 mm (0.98 in): Days with 25 mm or more rain	126	17	2018	9
50 mm (1.97 in): Days with 50 mm or more rain	92	6	1996	1
100 mm (3.94 in): Days with 100 mm or more rain	14	1	1914	1
10 cm (3.9 in): Days with 10 cm or more snowfall	96	7	2008	3
25 cm (9.8 in): Days with 25 cm or more snowfall	8	2	1979	2

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1893.

Download the Data

Data for Dixon Wwtp 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 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Dixon Wwtp Threshold Days by Year (USC00112348)

Key Facts for Dixon Wwtp Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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