Rocky Mt Threshold Days by Year (USC00317395)

7 fixed thresholds counted per year at Rocky Mt (USC00317395): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Rocky Mt Thresholds

Rocky Mt: days with 10 mm (0.39 in) or more of precipitation in 109 years, most in 1929 with 52.
Rocky Mt: days with 25 mm (0.98 in) or more of precipitation in 109 years, most in 2003 with 23.
Rocky Mt: days with 50 mm (1.97 in) or more of precipitation in 99 years, most in 1995 with 8.
Rocky Mt: days with 100 mm (3.94 in) or more of precipitation in 17 years, most in 1929 with 3.
7 fixed thresholds have at least one qualifying day at Rocky Mt.

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

109 years with a qualifying day

Days per year at Rocky Mt with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 52 in 1929.

Days with 10 mm (0.39 in) or more of precipitation per year at Rocky Mt
Year	Days	Decade average
1905	41	40.5
1906	38	40.5
1907	43	40.5
1908	40	40.5
1911	35	37
1912	34	37
1913	41	37
1914	38	37
1915	30	37
1916	38	37
1917	38	37
1918	35	37
1919	44	37
1920	40	41.4
1921	29	41.4
1922	48	41.4
1923	33	41.4
1924	40	41.4
1925	39	41.4
1926	37	41.4
1927	47	41.4
1928	49	41.4
1929	52	41.4
1930	28	38.5
1931	43	38.5
1932	34	38.5
1933	27	38.5
1934	47	38.5
1935	37	38.5
1936	45	38.5
1937	41	38.5
1938	41	38.5
1939	42	38.5
1940	33	37.6
1941	29	37.6
1942	38	37.6
1943	35	37.6
1944	35	37.6
1945	44	37.6
1946	42	37.6
1947	37	37.6
1948	44	37.6
1949	39	37.6
1950	35	39.3
1951	27	39.3
1952	46	39.3
1953	35	39.3
1954	36	39.3
1955	40	39.3
1956	42	39.3
1957	44	39.3
1958	45	39.3
1959	43	39.3
1960	39	36.1
1961	35	36.1
1962	45	36.1
1963	33	36.1
1964	38	36.1
1965	29	36.1
1966	38	36.1
1967	34	36.1
1968	33	36.1
1969	37	36.1
1970	31	37.9
1971	46	37.9
1972	43	37.9
1973	35	37.9
1974	37	37.9
1975	42	37.9
1976	31	37.9
1977	38	37.9
1978	35	37.9
1979	41	37.9
1980	40	38.8
1981	33	38.8
1982	41	38.8
1983	44	38.8
1984	48	38.8
1985	35	38.8
1986	31	38.8
1987	36	38.8
1988	33	38.8
1989	47	38.8
1990	36	37.4
1991	27	37.4
1992	45	37.4
1993	45	37.4
1994	33	37.4
1995	44	37.4
1996	40	37.4
1997	30	37.4
1998	38	37.4
1999	36	37.4
2000	39	36.6
2001	34	36.6
2002	38	36.6
2003	42	36.6
2004	40	36.6
2005	39	36.6
2006	38	36.6
2007	24	36.6
2008	33	36.6
2009	39	36.6
2010	28	37
2014	36	37
2015	39	37
2016	36	37
2017	33	37
2018	50	37

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

First to last qualifying date each year at Rocky Mt
Year	First date	Last date
1905	1905-01-07	1905-12-29
1906	1906-01-01	1906-12-20
1907	1907-02-03	1907-12-30
1908	1908-01-05	1908-12-23
1911	1911-01-02	1911-12-23
1912	1912-01-04	1912-12-27
1913	1913-01-01	1913-12-29
1914	1914-01-03	1914-12-29
1915	1915-01-07	1915-12-29
1916	1916-01-14	1916-12-15
1917	1917-01-25	1917-12-12
1918	1918-01-12	1918-12-23
1919	1919-01-03	1919-12-20
1920	1920-01-17	1920-12-27
1921	1921-01-10	1921-12-26
1922	1922-01-05	1922-12-28
1923	1923-01-01	1923-12-05
1924	1924-01-11	1924-12-31
1925	1925-01-01	1925-12-20
1926	1926-01-05	1926-12-29
1927	1927-02-09	1927-12-16
1928	1928-01-25	1928-12-26
1929	1929-01-06	1929-12-23
1930	1930-01-14	1930-12-27
1931	1931-01-12	1931-12-28
1932	1932-01-01	1932-12-27
1933	1933-01-10	1933-12-20
1934	1934-01-02	1934-12-19
1935	1935-01-01	1935-12-30
1936	1936-01-03	1936-12-16
1937	1937-01-01	1937-12-24
1938	1938-01-07	1938-12-30
1939	1939-01-16	1939-12-27
1940	1940-01-08	1940-12-28
1941	1941-01-17	1941-12-24
1942	1942-01-28	1942-12-30
1943	1943-01-09	1943-12-29
1944	1944-01-03	1944-12-30
1945	1945-01-07	1945-12-31
1946	1946-01-16	1946-12-21
1947	1947-01-04	1947-12-26
1948	1948-01-14	1948-12-30
1949	1949-01-06	1949-12-14
1950	1950-01-13	1950-12-08
1951	1951-01-08	1951-12-21
1952	1952-01-05	1952-12-31
1953	1953-01-24	1953-12-30
1954	1954-01-11	1954-12-14
1955	1955-01-11	1955-12-31
1956	1956-01-24	1956-12-24
1957	1957-01-30	1957-12-29
1958	1958-01-08	1958-12-29
1959	1959-01-02	1959-12-19
1960	1960-01-03	1960-12-12
1961	1961-01-01	1961-12-18
1962	1962-01-02	1962-12-30
1963	1963-01-19	1963-12-24
1964	1964-01-01	1964-12-27
1965	1965-02-08	1965-12-26
1966	1966-01-06	1966-12-29
1967	1967-01-05	1967-12-29
1968	1968-01-10	1968-12-15
1969	1969-01-20	1969-12-26
1970	1970-01-07	1970-12-17
1971	1971-01-05	1971-11-25
1972	1972-01-11	1972-12-22
1973	1973-01-23	1973-12-31
1974	1974-01-26	1974-12-28
1975	1975-01-09	1975-12-31
1976	1976-01-27	1976-12-16
1977	1977-01-04	1977-12-31
1978	1978-01-14	1978-12-25
1979	1979-01-02	1979-12-07
1980	1980-01-05	1980-12-28
1981	1981-01-22	1981-12-26
1982	1982-01-01	1982-12-31
1983	1983-01-03	1983-12-29
1984	1984-01-11	1984-12-11
1985	1985-01-03	1985-12-13
1986	1986-01-26	1986-12-25
1987	1987-01-02	1987-12-29
1988	1988-01-04	1988-11-05
1989	1989-01-01	1989-12-13
1990	1990-02-10	1990-12-21
1991	1991-01-02	1991-12-29
1992	1992-01-03	1992-12-28
1993	1993-01-05	1993-12-20
1994	1994-01-01	1994-11-27
1995	1995-01-06	1995-12-19
1996	1996-01-06	1996-12-26
1997	1997-01-09	1997-12-27
1998	1998-01-08	1998-12-28
1999	1999-01-03	1999-12-14
2000	2000-01-04	2000-12-17
2001	2001-01-20	2001-12-10
2002	2002-01-06	2002-12-24
2003	2003-01-23	2003-12-14
2004	2004-01-25	2004-12-26
2005	2005-01-14	2005-12-28
2006	2006-01-02	2006-12-25
2007	2007-01-18	2007-12-31
2008	2008-01-19	2008-12-29
2009	2009-01-07	2009-12-31
2010	2010-01-17	2010-12-27
2014	2014-01-10	2014-12-29
2015	2015-01-12	2015-12-31
2016	2016-01-17	2016-12-19
2017	2017-01-02	2017-12-09
2018	2018-01-12	2018-12-28

Every Fixed Threshold

Fixed thresholds at Rocky Mt
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	109	52	1929	50
25 mm (0.98 in): Days with 25 mm or more rain	109	23	2003	16
50 mm (1.97 in): Days with 50 mm or more rain	99	8	1995	3
100 mm (3.94 in): Days with 100 mm or more rain	17	3	1929	1
200 mm (7.87 in): Days with 200 mm or more rain	1	1	2016	1
10 cm (3.9 in): Days with 10 cm or more snowfall	17	2	1935	1
25 cm (9.8 in): Days with 25 cm or more snowfall	2	2	1948	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1905.

Download the Data

Data for Rocky Mt 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).

Rocky Mt Threshold Days by Year (USC00317395)

Key Facts for Rocky Mt Thresholds

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

Every Fixed Threshold

Download the Data

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