Chillicothe Threshold Days by Year (USC00411701)

6 fixed thresholds counted per year at Chillicothe (USC00411701): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Chillicothe Thresholds

Chillicothe: days with 10 mm (0.39 in) or more of precipitation in 65 years, most in 1941 with 36.
Chillicothe: days with 25 mm (0.98 in) or more of precipitation in 64 years, most in 1941 with 16.
Chillicothe: days with 50 mm (1.97 in) or more of precipitation in 48 years, most in 1920 with 8.
Chillicothe: days with 10 cm (3.9 in) or more of snowfall in 24 years, most in 1918 with 3.
6 fixed thresholds have at least one qualifying day at Chillicothe.

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

65 years with a qualifying day

Days per year at Chillicothe with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 36 in 1941.

Days with 10 mm (0.39 in) or more of precipitation per year at Chillicothe
Year	Days	Decade average
1908	24	20.5
1909	17	20.5
1911	19	20.7
1912	19	20.7
1913	23	20.7
1914	24	20.7
1915	26	20.7
1916	16	20.7
1917	11	20.7
1918	18	20.7
1919	30	20.7
1920	25	19.4
1921	16	19.4
1922	17	19.4
1923	24	19.4
1924	18	19.4
1925	22	19.4
1926	25	19.4
1927	19	19.4
1928	14	19.4
1929	14	19.4
1930	21	18.5
1931	18	18.5
1932	19	18.5
1933	15	18.5
1934	19	18.5
1935	26	18.5
1936	14	18.5
1937	16	18.5
1938	18	18.5
1939	19	18.5
1940	17	22.3
1941	36	22.3
1942	23	22.3
1943	21	22.3
1944	27	22.3
1945	19	22.3
1946	17	22.3
1948	16	22.3
1949	25	22.3
1950	22	21
1951	18	21
1952	12	21
1953	23	21
1954	12	21
1955	27	21
1956	15	21
1957	34	21
1958	20	21
1959	27	21
1960	25	20
1961	22	20
1962	23	20
1963	18	20
1964	19	20
1965	17	20
1966	17	20
1967	17	20
1968	22	20
1969	20	20
1970	14	17.8
1971	16	17.8
1972	17	17.8
1973	22	17.8
1974	20	17.8

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

First to last qualifying date each year at Chillicothe
Year	First date	Last date
1908	1908-04-09	1908-11-29
1909	1909-03-08	1909-11-28
1911	1911-02-10	1911-12-19
1912	1912-02-20	1912-10-31
1913	1913-02-21	1913-12-13
1914	1914-03-28	1914-12-25
1915	1915-02-21	1915-10-17
1916	1916-04-01	1916-11-22
1917	1917-05-06	1917-12-08
1918	1918-02-11	1918-12-23
1919	1919-02-22	1919-11-10
1920	1920-01-05	1920-11-08
1921	1921-02-18	1921-09-24
1922	1922-01-10	1922-10-20
1923	1923-01-31	1923-12-12
1924	1924-03-13	1924-10-21
1925	1925-04-02	1925-11-07
1926	1926-03-04	1926-12-21
1927	1927-01-13	1927-12-28
1928	1928-02-17	1928-11-14
1929	1929-03-27	1929-11-09
1930	1930-01-08	1930-12-05
1931	1931-02-08	1931-12-20
1932	1932-01-04	1932-12-23
1933	1933-02-25	1933-11-02
1934	1934-03-01	1934-11-22
1935	1935-02-07	1935-12-05
1936	1936-04-16	1936-09-27
1937	1937-03-04	1937-11-09
1938	1938-01-22	1938-11-03
1939	1939-01-08	1939-12-26
1940	1940-01-06	1940-11-25
1941	1941-01-31	1941-12-11
1942	1942-03-01	1942-12-21
1943	1943-03-25	1943-12-27
1944	1944-01-02	1944-12-05
1945	1945-01-18	1945-11-10
1946	1946-03-27	1946-12-11
1948	1948-02-05	1948-08-08
1949	1949-01-11	1949-12-21
1950	1950-01-13	1950-09-26
1951	1951-03-26	1951-10-31
1952	1952-01-02	1952-12-19
1953	1953-03-03	1953-11-19
1954	1954-04-11	1954-12-29
1955	1955-01-10	1955-10-05
1956	1956-02-10	1956-12-19
1957	1957-01-30	1957-11-05
1958	1958-01-19	1958-09-15
1959	1959-04-08	1959-12-17
1960	1960-01-05	1960-12-31
1961	1961-02-05	1961-11-15
1962	1962-04-05	1962-12-02
1963	1963-03-10	1963-12-10
1964	1964-02-03	1964-12-10
1965	1965-02-09	1965-12-24
1966	1966-01-21	1966-10-17
1967	1967-03-31	1967-10-31
1968	1968-01-18	1968-11-26
1969	1969-02-14	1969-11-02
1970	1970-03-06	1970-09-22
1971	1971-02-21	1971-12-14
1972	1972-03-23	1972-10-31
1973	1973-01-03	1973-11-24
1974	1974-03-10	1974-10-31

Every Fixed Threshold

Fixed thresholds at Chillicothe
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	65	36	1941	20
25 mm (0.98 in): Days with 25 mm or more rain	64	16	1941	5
50 mm (1.97 in): Days with 50 mm or more rain	48	8	1920	2
100 mm (3.94 in): Days with 100 mm or more rain	11	2	1925	2
10 cm (3.9 in): Days with 10 cm or more snowfall	24	3	1918	1
25 cm (9.8 in): Days with 25 cm or more snowfall	2	1	1931	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1908.

Download the Data

Data for Chillicothe 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).

Chillicothe Threshold Days by Year (USC00411701)

Key Facts for Chillicothe Thresholds

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

Every Fixed Threshold

Download the Data

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