Ultima (Post Office) Threshold Days by Year

4 fixed thresholds counted per year at Ultima (Post Office) (ASN00077048): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Ultima (Post Office) Thresholds

Ultima (Post Office): days with 10 mm (0.39 in) or more of precipitation in 103 years, most in 1973 with 23.
Ultima (Post Office): days with 25 mm (0.98 in) or more of precipitation in 78 years, most in 1917 with 6.
Ultima (Post Office): days with 50 mm (1.97 in) or more of precipitation in 19 years, most in 1911 with 2.
Ultima (Post Office): days with 100 mm (3.94 in) or more of precipitation in 1 years, most in 1998 with 1.
4 fixed thresholds have at least one qualifying day at Ultima (Post Office).

Days with 10 mm (0.39 in) or more of precipitation

103 years with a qualifying day

Days per year at Ultima (Post Office) with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 23 in 1973.

Days with 10 mm (0.39 in) or more of precipitation per year at Ultima (Post Office)
Year	Days	Decade average
1907	8	9
1908	10	9
1910	18	9.8
1911	13	9.8
1912	8	9.8
1913	10	9.8
1914	2	9.8
1915	7	9.8
1916	9	9.8
1917	14	9.8
1918	8	9.8
1919	9	9.8
1920	12	7.9
1922	4	7.9
1923	9	7.9
1924	9	7.9
1925	5	7.9
1926	8	7.9
1928	10	7.9
1929	6	7.9
1930	13	9.6
1931	12	9.6
1932	12	9.6
1933	11	9.6
1934	10	9.6
1935	7	9.6
1936	10	9.6
1937	6	9.6
1938	3	9.6
1939	12	9.6
1940	4	7.8
1941	6	7.8
1942	9	7.8
1943	3	7.8
1944	4	7.8
1945	6	7.8
1946	9	7.8
1947	14	7.8
1948	10	7.8
1949	13	7.8
1950	18	11.1
1951	6	11.1
1952	7	11.1
1953	12	11.1
1954	9	11.1
1955	15	11.1
1956	20	11.1
1957	4	11.1
1958	12	11.1
1959	8	11.1
1960	16	8.8
1961	9	8.8
1962	6	8.8
1963	9	8.8
1964	9	8.8
1965	8	8.8
1966	9	8.8
1967	3	8.8
1968	7	8.8
1969	12	8.8
1970	5	9.7
1971	9	9.7
1972	6	9.7
1973	23	9.7
1974	13	9.7
1975	12	9.7
1976	5	9.7
1977	7	9.7
1979	7	9.7
1980	9	7.9
1982	2	7.9
1984	8	7.9
1985	6	7.9
1986	11	7.9
1987	10	7.9
1988	9	7.9
1989	8	7.9
1990	6	8.4
1991	8	8.4
1992	19	8.4
1993	12	8.4
1994	3	8.4
1995	5	8.4
1998	7	8.4
1999	7	8.4
2002	4	8
2004	5	8
2005	15	8
2006	8	8
2013	7	7
2014	7	7
2015	4	7
2016	12	7
2017	10	7
2018	4	7
2019	5	7
2020	8	9
2021	6	9
2022	14	9
2023	9	9
2024	8	9
2025	4	9
2026	14	9

For each year, a bar from the first to the last day at Ultima (Post Office) meeting 10 mm (0.39 in).

First to last qualifying date each year at Ultima (Post Office)
Year	First date	Last date
1907	1907-04-06	1907-12-26
1908	1908-03-08	1908-12-24
1910	1910-01-08	1910-12-09
1911	1911-02-05	1911-11-30
1912	1912-06-10	1912-11-18
1913	1913-03-06	1913-12-23
1914	1914-04-21	1914-12-23
1915	1915-01-20	1915-10-23
1916	1916-01-06	1916-11-27
1917	1917-02-21	1917-11-22
1918	1918-02-19	1918-08-21
1919	1919-02-18	1919-12-29
1920	1920-05-10	1920-12-16
1922	1922-05-04	1922-12-06
1923	1923-05-20	1923-12-18
1924	1924-01-03	1924-12-14
1925	1925-01-13	1925-11-19
1926	1926-03-21	1926-10-07
1928	1928-01-18	1928-10-03
1929	1929-02-22	1929-12-28
1930	1930-02-07	1930-12-25
1931	1931-03-19	1931-10-09
1932	1932-02-09	1932-12-15
1933	1933-05-15	1933-12-05
1934	1934-02-19	1934-11-09
1935	1935-01-05	1935-11-11
1936	1936-01-07	1936-10-18
1937	1937-01-19	1937-10-15
1938	1938-01-15	1938-07-31
1939	1939-02-16	1939-11-16
1940	1940-09-13	1940-11-12
1941	1941-01-04	1941-11-05
1942	1942-02-13	1942-11-23
1943	1943-06-01	1943-10-11
1944	1944-04-10	1944-12-12
1945	1945-05-04	1945-11-12
1946	1946-01-18	1946-11-12
1947	1947-03-13	1947-12-23
1948	1948-02-16	1948-12-28
1949	1949-02-21	1949-11-12
1950	1950-02-03	1950-11-20
1951	1951-02-19	1951-08-03
1952	1952-05-17	1952-11-20
1953	1953-01-28	1953-12-07
1954	1954-01-30	1954-12-13
1955	1955-02-14	1955-12-03
1956	1956-03-05	1956-11-16
1957	1957-02-07	1957-06-21
1958	1958-02-19	1958-11-29
1959	1959-01-27	1959-12-26
1960	1960-01-04	1960-11-21
1961	1961-01-02	1961-12-14
1962	1962-01-17	1962-12-28
1963	1963-01-03	1963-10-27
1964	1964-01-09	1964-11-19
1965	1965-05-31	1965-12-07
1966	1966-03-15	1966-12-14
1967	1967-05-19	1967-09-15
1968	1968-01-21	1968-12-16
1969	1969-02-01	1969-10-29
1970	1970-01-02	1970-08-27
1971	1971-02-02	1971-11-29
1972	1972-01-12	1972-09-07
1973	1973-01-31	1973-11-29
1974	1974-01-10	1974-10-04
1975	1975-01-09	1975-12-13
1976	1976-01-12	1976-12-24
1977	1977-02-21	1977-11-29
1979	1979-01-22	1979-09-28
1980	1980-04-17	1980-12-14
1982	1982-03-09	1982-03-23
1984	1984-01-16	1984-11-02
1985	1985-05-29	1985-12-07
1986	1986-04-16	1986-12-04
1987	1987-01-25	1987-12-01
1988	1988-01-01	1988-12-06
1989	1989-01-04	1989-09-12
1990	1990-02-28	1990-07-18
1991	1991-01-05	1991-09-19
1992	1992-04-07	1992-12-26
1993	1993-01-25	1993-12-26
1994	1994-01-17	1994-06-07
1995	1995-05-01	1995-10-22
1998	1998-01-07	1998-11-12
1999	1999-02-13	1999-12-28
2002	2002-02-16	2002-12-31
2004	2004-09-08	2004-12-09
2005	2005-01-04	2005-12-02
2006	2006-01-21	2006-09-06
2013	2013-02-18	2013-12-05
2014	2014-02-15	2014-11-16
2015	2015-05-20	2015-10-11
2016	2016-01-23	2016-11-23
2017	2017-02-06	2017-12-20
2018	2018-05-29	2018-12-14
2019	2019-02-07	2019-11-03
2020	2020-01-21	2020-10-17
2021	2021-06-24	2021-11-13
2022	2022-01-28	2022-11-13
2023	2023-04-16	2023-12-26
2024	2024-01-07	2024-11-25
2025	2025-04-26	2025-12-22
2026	2026-01-20	2026-10-03

Every Fixed Threshold

Fixed thresholds at Ultima (Post Office)
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
10 mm (0.39 in): Days with 10 mm or more rain	103	23	1973	14
25 mm (0.98 in): Days with 25 mm or more rain	78	6	1917	2
50 mm (1.97 in): Days with 50 mm or more rain	19	2	1911	1
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1998	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1907.

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Data for Ultima (Post Office) 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 2026-10-15 (15 October 2026). Threshold counts are computed by this site.

Data as of 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Ultima (Post Office) Threshold Days by Year

Key Facts for Ultima (Post Office) Thresholds

Days with 10 mm (0.39 in) or more of precipitation

Every Fixed Threshold

Download the Data

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