Natoma Threshold Days by Year (USC00145628)

6 fixed thresholds counted per year at Natoma (USC00145628): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Natoma Thresholds

Natoma: days with 10 mm (0.39 in) or more of precipitation in 92 years, most in 1993 with 34.
Natoma: days with 25 mm (0.98 in) or more of precipitation in 92 years, most in 1951 with 15.
Natoma: days with 10 cm (3.9 in) or more of snowfall in 62 years, most in 1960 with 10.
Natoma: days with 50 mm (1.97 in) or more of precipitation in 56 years, most in 1987 with 5.
6 fixed thresholds have at least one qualifying day at Natoma.

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

92 years with a qualifying day

Days per year at Natoma with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 34 in 1993.

Days with 10 mm (0.39 in) or more of precipitation per year at Natoma
Year	Days	Decade average
1910	14	16.6
1911	13	16.6
1912	24	16.6
1914	9	16.6
1915	31	16.6
1916	13	16.6
1917	12	16.6
1941	23	19.1
1942	18	19.1
1943	17	19.1
1944	30	19.1
1945	13	19.1
1946	18	19.1
1948	19	19.1
1949	15	19.1
1950	20	20.9
1951	30	20.9
1952	18	20.9
1953	18	20.9
1954	18	20.9
1955	16	20.9
1956	14	20.9
1957	31	20.9
1958	22	20.9
1959	22	20.9
1960	26	20.6
1961	22	20.6
1962	20	20.6
1963	13	20.6
1964	16	20.6
1965	27	20.6
1966	12	20.6
1967	26	20.6
1968	18	20.6
1969	26	20.6
1970	21	20.9
1971	26	20.9
1972	22	20.9
1973	29	20.9
1974	14	20.9
1975	15	20.9
1976	15	20.9
1977	25	20.9
1978	19	20.9
1979	23	20.9
1980	14	19.1
1981	29	19.1
1982	19	19.1
1983	14	19.1
1984	22	19.1
1985	23	19.1
1986	21	19.1
1987	25	19.1
1988	9	19.1
1989	15	19.1
1990	19	22.9
1991	16	22.9
1992	25	22.9
1993	34	22.9
1994	25	22.9
1995	18	22.9
1996	23	22.9
1997	22	22.9
1998	22	22.9
1999	25	22.9
2000	21	22
2001	17	22
2002	18	22
2003	19	22
2004	25	22
2005	25	22
2006	24	22
2007	25	22
2008	25	22
2009	21	22
2010	14	20.7
2011	25	20.7
2012	16	20.7
2013	25	20.7
2014	16	20.7
2015	24	20.7
2016	25	20.7
2017	17	20.7
2018	21	20.7
2019	24	20.7
2020	16	17.1
2021	13	17.1
2022	16	17.1
2023	18	17.1
2024	18	17.1
2025	22	17.1
2026	17	17.1

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

First to last qualifying date each year at Natoma
Year	First date	Last date
1910	1910-01-04	1910-10-18
1911	1911-02-16	1911-12-19
1912	1912-02-11	1912-11-12
1914	1914-04-27	1914-10-08
1915	1915-01-10	1915-09-25
1916	1916-04-30	1916-09-11
1917	1917-04-12	1917-11-18
1941	1941-02-20	1941-12-25
1942	1942-03-25	1942-12-27
1943	1943-02-02	1943-12-10
1944	1944-02-10	1944-12-04
1945	1945-04-03	1945-12-25
1946	1946-01-19	1946-11-09
1948	1948-01-01	1948-11-05
1949	1949-01-23	1949-10-10
1950	1950-02-12	1950-10-02
1951	1951-01-02	1951-10-27
1952	1952-03-09	1952-12-19
1953	1953-01-23	1953-12-03
1954	1954-02-20	1954-12-05
1955	1955-02-04	1955-12-10
1956	1956-02-01	1956-10-30
1957	1957-03-24	1957-11-18
1958	1958-02-27	1958-12-05
1959	1959-01-21	1959-10-31
1960	1960-01-14	1960-12-11
1961	1961-03-18	1961-11-16
1962	1962-02-15	1962-10-06
1963	1963-03-11	1963-10-20
1964	1964-02-14	1964-11-15
1965	1965-01-23	1965-10-19
1966	1966-02-09	1966-12-27
1967	1967-04-12	1967-09-20
1968	1968-04-03	1968-12-22
1969	1969-02-14	1969-10-31
1970	1970-03-27	1970-10-26
1971	1971-01-03	1971-12-29
1972	1972-04-15	1972-11-13
1973	1973-01-27	1973-12-24
1974	1974-03-10	1974-12-14
1975	1975-03-09	1975-11-19
1976	1976-02-21	1976-10-27
1977	1977-03-28	1977-10-07
1978	1978-02-13	1978-11-26
1979	1979-01-13	1979-12-29
1980	1980-02-08	1980-12-08
1981	1981-03-04	1981-12-01
1982	1982-01-22	1982-12-28
1983	1983-02-20	1983-11-27
1984	1984-03-12	1984-12-16
1985	1985-01-09	1985-10-10
1986	1986-04-01	1986-12-07
1987	1987-02-27	1987-11-17
1988	1988-01-20	1988-09-15
1989	1989-05-18	1989-10-27
1990	1990-01-20	1990-11-03
1991	1991-03-17	1991-12-23
1992	1992-01-01	1992-11-25
1993	1993-01-09	1993-12-14
1994	1994-01-27	1994-12-07
1995	1995-01-27	1995-09-19
1996	1996-04-16	1996-11-17
1997	1997-02-27	1997-12-24
1998	1998-02-10	1998-11-08
1999	1999-01-30	1999-09-12
2000	2000-02-23	2000-11-12
2001	2001-01-28	2001-09-18
2002	2002-01-31	2002-10-30
2003	2003-03-18	2003-12-10
2004	2004-01-26	2004-12-06
2005	2005-01-05	2005-11-28
2006	2006-03-19	2006-12-31
2007	2007-01-21	2007-12-15
2008	2008-02-05	2008-11-11
2009	2009-04-13	2009-11-24
2010	2010-03-09	2010-11-17
2011	2011-01-10	2011-12-20
2012	2012-02-03	2012-12-15
2013	2013-01-01	2013-11-06
2014	2014-04-21	2014-10-02
2015	2015-01-31	2015-12-14
2016	2016-01-08	2016-11-07
2017	2017-01-16	2017-10-07
2018	2018-04-21	2018-10-25
2019	2019-01-12	2019-12-28
2020	2020-01-22	2020-11-10
2021	2021-03-14	2021-10-27
2022	2022-03-18	2022-10-28
2023	2023-01-18	2023-10-25
2024	2024-02-03	2024-12-14
2025	2025-04-24	2025-11-21
2026	2026-01-09	2026-10-15

Every Fixed Threshold

Fixed thresholds at Natoma
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	92	34	1993	17
25 mm (0.98 in): Days with 25 mm or more rain	92	15	1951	10
50 mm (1.97 in): Days with 50 mm or more rain	56	5	1987	3
100 mm (3.94 in): Days with 100 mm or more rain	13	2	1950	1
10 cm (3.9 in): Days with 10 cm or more snowfall	62	10	1960	2
25 cm (9.8 in): Days with 25 cm or more snowfall	12	2	1971	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1910.

Download the Data

Data for Natoma 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).

Natoma Threshold Days by Year (USC00145628)

Key Facts for Natoma Thresholds

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

Every Fixed Threshold

Download the Data

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