Cincinnatus Threshold Days by Year (USC00301492)

7 fixed thresholds counted per year at Cincinnatus (USC00301492): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Cincinnatus Thresholds

Cincinnatus: days with 10 mm (0.39 in) or more of precipitation in 61 years, most in 1974 with 47.
Cincinnatus: days with 25 mm (0.98 in) or more of precipitation in 60 years, most in 1977 with 15.
Cincinnatus: days with 10 cm (3.9 in) or more of snowfall in 52 years, most in 1994 with 13.
Cincinnatus: days with 50 mm (1.97 in) or more of precipitation in 27 years, most in 1992 with 3.
7 fixed thresholds have at least one qualifying day at Cincinnatus.

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

61 years with a qualifying day

Days per year at Cincinnatus with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 47 in 1974.

Days with 10 mm (0.39 in) or more of precipitation per year at Cincinnatus
Year	Days	Decade average
1938	35	31
1939	27	31
1940	32	34.2
1941	33	34.2
1942	36	34.2
1943	31	34.2
1944	38	34.2
1945	42	34.2
1946	26	34.2
1947	38	34.2
1948	34	34.2
1949	32	34.2
1950	40	34.6
1951	36	34.6
1952	37	34.6
1953	26	34.6
1954	30	34.6
1955	36	34.6
1956	35	34.6
1957	30	34.6
1958	45	34.6
1959	31	34.6
1960	26	32.4
1961	37	32.4
1962	34	32.4
1963	25	32.4
1964	32	32.4
1965	32	32.4
1966	32	32.4
1967	32	32.4
1968	40	32.4
1969	34	32.4
1970	33	39
1971	28	39
1972	42	39
1973	38	39
1974	47	39
1975	39	39
1976	46	39
1977	47	39
1978	36	39
1979	34	39
1980	32	36.2
1981	40	36.2
1982	34	36.2
1983	39	36.2
1984	40	36.2
1986	35	36.2
1987	29	36.2
1988	40	36.2
1989	37	36.2
1990	47	37.4
1991	34	37.4
1992	40	37.4
1993	39	37.4
1994	37	37.4
1997	31	37.4
1998	40	37.4
1999	31	37.4
2009	38	38
2010	36	36

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

First to last qualifying date each year at Cincinnatus
Year	First date	Last date
1938	1938-01-01	1938-12-10
1939	1939-01-30	1939-12-21
1940	1940-02-15	1940-12-30
1941	1941-01-25	1941-12-25
1942	1942-02-01	1942-12-31
1943	1943-02-07	1943-11-22
1944	1944-02-12	1944-12-26
1945	1945-01-01	1945-12-26
1946	1946-01-22	1946-12-21
1947	1947-01-02	1947-12-16
1948	1948-01-02	1948-12-31
1949	1949-01-01	1949-12-13
1950	1950-01-07	1950-12-16
1951	1951-01-08	1951-12-31
1952	1952-01-18	1952-12-12
1953	1953-01-09	1953-12-10
1954	1954-01-27	1954-12-30
1955	1955-01-02	1955-12-04
1956	1956-01-31	1956-12-23
1957	1957-01-23	1957-12-27
1958	1958-01-15	1958-12-06
1959	1959-01-16	1959-12-29
1960	1960-01-03	1960-10-25
1961	1961-01-02	1961-12-05
1962	1962-01-07	1962-12-07
1963	1963-01-12	1963-12-09
1964	1964-01-02	1964-12-12
1965	1965-01-09	1965-12-26
1966	1966-01-03	1966-12-11
1967	1967-01-28	1967-11-23
1968	1968-03-13	1968-12-29
1969	1969-01-30	1969-12-27
1970	1970-02-03	1970-12-24
1971	1971-02-08	1971-12-31
1972	1972-01-03	1972-12-22
1973	1973-01-01	1973-12-27
1974	1974-01-09	1974-12-17
1975	1975-01-26	1975-12-26
1976	1976-01-12	1976-12-08
1977	1977-01-10	1977-12-22
1978	1978-01-09	1978-12-26
1979	1979-01-02	1979-12-25
1980	1980-01-15	1980-11-25
1981	1981-01-07	1981-12-23
1982	1982-01-04	1982-12-16
1983	1983-01-16	1983-12-29
1984	1984-02-15	1984-12-22
1986	1986-01-26	1986-12-25
1987	1987-01-03	1987-12-29
1988	1988-02-02	1988-12-29
1989	1989-02-21	1989-11-17
1990	1990-01-21	1990-12-31
1991	1991-01-12	1991-12-03
1992	1992-02-16	1992-12-31
1993	1993-01-13	1993-12-22
1994	1994-01-05	1994-12-06
1997	1997-02-05	1997-12-30
1998	1998-01-08	1998-12-22
1999	1999-01-09	1999-12-15
2009	2009-01-08	2009-12-14
2010	2010-01-26	2010-11-26

Every Fixed Threshold

Fixed thresholds at Cincinnatus
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	61	47	1974	36
25 mm (0.98 in): Days with 25 mm or more rain	60	15	1977	7
50 mm (1.97 in): Days with 50 mm or more rain	27	3	1992	1
100 mm (3.94 in): Days with 100 mm or more rain	4	1	1945	1
10 cm (3.9 in): Days with 10 cm or more snowfall	52	13	1994	1
25 cm (9.8 in): Days with 25 cm or more snowfall	15	4	1993	1
50 cm (19.7 in): Days with 50 cm or more snowfall	3	1	1961	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1938.

Download the Data

Data for Cincinnatus 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).

Cincinnatus Threshold Days by Year (USC00301492)

Key Facts for Cincinnatus Thresholds

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

Every Fixed Threshold

Download the Data

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