Rockwell City Threshold Days by Year (USC00137161)

19 fixed thresholds counted per year at Rockwell City (USC00137161): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Rockwell City Thresholds

Rockwell City: days with a maximum temperature at or above 30 C (86 F) in 116 years, most in 1936 with 80.
Rockwell City: days with a maximum temperature at or below 0 C (32 F) in 116 years, most in 1978 with 89.
Rockwell City: days with a maximum temperature at or above 90 F (32.2 C) in 115 years, most in 1936 with 63.
Rockwell City: days with 10 mm (0.39 in) or more of precipitation in 115 years, most in 1909 with 48.
19 fixed thresholds have at least one qualifying day at Rockwell City.

Days at or above 30 C (86 F)

116 years with a qualifying day

Days per year at Rockwell City with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 80 in 1936.

Days at or above 30 C (86 F) per year at Rockwell City
Year	Days	Decade average
1898	47	46.5
1899	46	46.5
1900	55	40.7
1901	67	40.7
1902	18	40.7
1903	23	40.7
1904	22	40.7
1905	39	40.7
1906	42	40.7
1907	46	40.7
1908	44	40.7
1909	51	40.7
1910	52	49.8
1911	69	49.8
1912	43	49.8
1913	72	49.8
1914	77	49.8
1915	15	49.8
1916	56	49.8
1917	35	49.8
1918	49	49.8
1919	30	49.8
1920	33	30.5
1923	28	30.5
1931	76	68.8
1932	46	68.8
1933	73	68.8
1934	76	68.8
1935	61	68.8
1936	80	68.8
1937	71	68.8
1938	61	68.8
1939	75	68.8
1940	48	52.3
1941	61	52.3
1942	42	52.3
1943	60	52.3
1944	44	52.3
1945	38	52.3
1946	42	52.3
1947	61	52.3
1948	63	52.3
1949	64	52.3
1950	22	48
1951	28	48
1952	54	48
1953	58	48
1954	51	48
1955	68	48
1956	68	48
1957	40	48
1958	37	48
1959	54	48
1960	40	44.8
1961	39	44.8
1962	35	44.8
1963	59	44.8
1964	59	44.8
1965	49	44.8
1966	53	44.8
1967	35	44.8
1968	42	44.8
1969	37	44.8
1970	68	51.7
1971	69	51.7
1972	41	51.7
1973	43	51.7
1974	41	51.7
1975	55	51.7
1976	63	51.7
1977	44	51.7
1978	49	51.7
1979	44	51.7
1980	58	46.4
1981	33	46.4
1982	24	46.4
1983	68	46.4
1984	48	46.4
1985	46	46.4
1986	30	46.4
1987	52	46.4
1988	74	46.4
1989	31	46.4
1990	38	31.6
1991	45	31.6
1992	14	31.6
1993	13	31.6
1994	32	31.6
1995	47	31.6
1996	21	31.6
1997	37	31.6
1999	37	31.6
2000	30	27.5
2001	34	27.5
2002	44	27.5
2003	25	27.5
2004	14	27.5
2005	37	27.5
2006	34	27.5
2007	36	27.5
2008	10	27.5
2009	11	27.5
2010	27	32
2011	32	32
2012	64	32
2013	37	32
2014	9	32
2015	19	32
2016	32	32
2017	43	32
2018	31	32
2019	26	32
2020	48	42.8
2021	42	42.8
2022	40	42.8
2026	41	42.8

For each year, a bar from the first to the last day at Rockwell City meeting 30 C (86 F).

First to last qualifying date each year at Rockwell City
Year	First date	Last date
1898	1898-05-24	1898-09-29
1899	1899-06-04	1899-10-22
1900	1900-05-12	1900-10-04
1901	1901-05-02	1901-09-24
1902	1902-04-21	1902-08-19
1903	1903-06-06	1903-08-24
1904	1904-05-22	1904-09-28
1905	1905-06-01	1905-09-28
1906	1906-05-11	1906-09-11
1907	1907-03-26	1907-09-18
1908	1908-04-13	1908-10-16
1909	1909-05-05	1909-08-28
1910	1910-04-09	1910-10-16
1911	1911-05-09	1911-09-04
1912	1912-05-20	1912-09-09
1913	1913-05-28	1913-09-09
1914	1914-05-24	1914-09-30
1915	1915-06-25	1915-08-11
1916	1916-05-05	1916-09-06
1917	1917-05-17	1917-09-16
1918	1918-05-03	1918-09-01
1919	1919-05-30	1919-10-02
1920	1920-05-22	1920-10-10
1923	1923-06-01	1923-09-05
1931	1931-04-08	1931-09-20
1932	1932-05-13	1932-10-02
1933	1933-05-16	1933-09-25
1934	1934-04-30	1934-09-19
1935	1935-06-12	1935-09-24
1936	1936-05-05	1936-09-22
1937	1937-05-29	1937-10-29
1938	1938-04-26	1938-10-16
1939	1939-04-24	1939-09-28
1940	1940-05-12	1940-09-22
1941	1941-05-14	1941-09-21
1942	1942-04-29	1942-09-16
1943	1943-05-28	1943-09-05
1944	1944-05-14	1944-09-17
1945	1945-05-20	1945-09-07
1946	1946-04-19	1946-09-06
1947	1947-06-09	1947-10-21
1948	1948-04-18	1948-09-20
1949	1949-04-25	1949-09-20
1950	1950-05-23	1950-09-18
1951	1951-06-17	1951-10-01
1952	1952-04-28	1952-09-30
1953	1953-05-25	1953-10-15
1954	1954-04-14	1954-09-27
1955	1955-05-02	1955-09-18
1956	1956-05-18	1956-10-12
1957	1957-06-04	1957-09-01
1958	1958-05-11	1958-10-15
1959	1959-05-01	1959-09-08
1960	1960-04-22	1960-10-11
1961	1961-05-31	1961-09-10
1962	1962-05-04	1962-09-12
1963	1963-05-08	1963-10-14
1964	1964-04-16	1964-09-09
1965	1965-04-30	1965-08-26
1966	1966-05-04	1966-10-07
1967	1967-04-16	1967-08-26
1968	1968-03-30	1968-08-24
1969	1969-05-27	1969-10-03
1970	1970-04-28	1970-09-29
1971	1971-05-13	1971-09-30
1972	1972-05-17	1972-09-20
1973	1973-05-21	1973-08-30
1974	1974-06-03	1974-09-26
1975	1975-05-18	1975-10-13
1976	1976-05-20	1976-10-03
1977	1977-04-09	1977-09-06
1978	1978-05-25	1978-09-18
1979	1979-05-17	1979-09-10
1980	1980-04-20	1980-09-19
1981	1981-04-25	1981-09-29
1982	1982-05-04	1982-09-11
1983	1983-05-27	1983-10-02
1984	1984-06-01	1984-09-19
1985	1985-04-18	1985-09-19
1986	1986-03-29	1986-09-26
1987	1987-04-19	1987-09-04
1988	1988-05-14	1988-09-18
1989	1989-04-24	1989-09-01
1990	1990-05-07	1990-10-05
1991	1991-04-05	1991-09-07
1992	1992-04-30	1992-08-10
1993	1993-05-27	1993-09-13
1994	1994-04-18	1994-09-14
1995	1995-06-06	1995-10-13
1996	1996-05-18	1996-09-05
1997	1997-05-19	1997-10-07
1999	1999-06-06	1999-09-26
2000	2000-05-08	2000-09-19
2001	2001-05-15	2001-08-30
2002	2002-04-16	2002-10-01
2003	2003-04-15	2003-10-20
2004	2004-04-17	2004-09-20
2005	2005-06-07	2005-10-05
2006	2006-04-14	2006-10-04
2007	2007-04-30	2007-09-18
2008	2008-05-26	2008-08-23
2009	2009-04-25	2009-08-13
2010	2010-04-02	2010-10-14
2011	2011-05-10	2011-09-13
2012	2012-04-02	2012-09-12
2013	2013-05-15	2013-09-28
2014	2014-05-08	2014-09-05
2015	2015-06-10	2015-10-12
2016	2016-05-07	2016-09-22
2017	2017-05-09	2017-09-25
2018	2018-05-24	2018-10-04
2019	2019-05-17	2019-10-01
2020	2020-05-02	2020-09-27
2021	2021-04-27	2021-09-29
2022	2022-05-10	2022-09-21
2026	2026-03-22	2026-08-31

Every Fixed Threshold

Fixed thresholds at Rockwell City
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	116	80	1936	41
35 C (95 F): Days	96	41	1936	4
40 C (104 F): Days	10	12	1936	2
90 F (32.2 C): Days	115	63	1936	19
100 F (37.8 C): Days	36	24	1936	1
110 F (43.3 C): Days	1	1	1936	1
0 C (32 F): Ice days (max	116	89	1978	16
0 C (32 F): Frost days (min	114	177	1996	52
-10 C (14 F): Days with min	114	84	1978	20
-20 C (-4 F): Days with min	114	36	1936	5
-30 C (-22 F): Days with min	36	6	1905	3
20 C (68 F): Tropical nights (min	114	36	1936	14
25 C (77 F): Days with min	16	2	1917	2
10 mm (0.39 in): Days with 10 mm or more rain	115	48	1909	13
25 mm (0.98 in): Days with 25 mm or more rain	115	21	1908	4
50 mm (1.97 in): Days with 50 mm or more rain	82	6	2007	1
100 mm (3.94 in): Days with 100 mm or more rain	12	1	1902	1
10 cm (3.9 in): Days with 10 cm or more snowfall	94	7	1909	1
25 cm (9.8 in): Days with 25 cm or more snowfall	11	2	1952	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1898.

Download the Data

Data for Rockwell City 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 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Rockwell City Threshold Days by Year (USC00137161)

Key Facts for Rockwell City Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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