Ravenna Threshold Days by Year (USC00257040)

20 fixed thresholds counted per year at Ravenna (USC00257040): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Ravenna Thresholds

Ravenna: nights with a minimum temperature at or below 0 C (32 F) in 132 years, most in 1970 with 185.
Ravenna: nights with a minimum temperature at or below -10 C (14 F) in 132 years, most in 1978 with 82.
Ravenna: days with a maximum temperature at or above 30 C (86 F) in 131 years, most in 1939 with 120.
Ravenna: days with a maximum temperature at or above 90 F (32.2 C) in 131 years, most in 1939 with 92.
20 fixed thresholds have at least one qualifying day at Ravenna.

Days at or above 30 C (86 F)

131 years with a qualifying day

Days per year at Ravenna with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 120 in 1939.

Days at or above 30 C (86 F) per year at Ravenna
Year	Days	Decade average
1893	69	62.7
1894	77	62.7
1895	54	62.7
1896	50	62.7
1897	67	62.7
1898	62	62.7
1899	60	62.7
1900	77	61.1
1904	39	61.1
1905	50	61.1
1906	52	61.1
1907	76	61.1
1908	57	61.1
1909	77	61.1
1910	75	70.4
1911	90	70.4
1912	72	70.4
1913	83	70.4
1914	74	70.4
1915	21	70.4
1916	76	70.4
1917	63	70.4
1918	80	70.4
1919	70	70.4
1920	68	73.1
1921	85	73.1
1922	87	73.1
1923	54	73.1
1924	50	73.1
1925	85	73.1
1926	81	73.1
1927	65	73.1
1928	71	73.1
1929	85	73.1
1930	75	93.4
1931	99	93.4
1932	79	93.4
1933	89	93.4
1934	105	93.4
1935	79	93.4
1936	104	93.4
1937	85	93.4
1938	99	93.4
1939	120	93.4
1940	100	80.3
1941	87	80.3
1942	81	80.3
1943	89	80.3
1944	76	80.3
1945	56	80.3
1946	83	80.3
1947	77	80.3
1948	84	80.3
1949	70	80.3
1950	47	80.4
1951	41	80.4
1952	92	80.4
1953	94	80.4
1954	97	80.4
1955	89	80.4
1956	114	80.4
1957	72	80.4
1958	77	80.4
1959	81	80.4
1960	66	70.1
1961	71	70.1
1962	64	70.1
1963	93	70.1
1964	76	70.1
1965	50	70.1
1966	81	70.1
1967	59	70.1
1968	78	70.1
1969	63	70.1
1970	92	73.2
1971	77	73.2
1972	74	73.2
1973	72	73.2
1974	69	73.2
1975	75	73.2
1976	74	73.2
1977	66	73.2
1978	76	73.2
1979	57	73.2
1980	96	61.7
1981	63	61.7
1982	42	61.7
1983	70	61.7
1984	52	61.7
1985	45	61.7
1986	54	61.7
1987	67	61.7
1988	78	61.7
1989	50	61.7
1990	60	55.1
1991	71	55.1
1992	27	55.1
1993	52	55.1
1994	84	55.1
1995	52	55.1
1996	36	55.1
1997	55	55.1
1998	68	55.1
1999	46	55.1
2000	75	59.9
2001	71	59.9
2002	85	59.9
2003	73	59.9
2004	58	59.9
2005	73	59.9
2006	55	59.9
2007	51	59.9
2008	32	59.9
2009	26	59.9
2010	55	59.4
2011	52	59.4
2012	95	59.4
2013	58	59.4
2014	44	59.4
2015	58	59.4
2016	63	59.4
2017	60	59.4
2018	59	59.4
2019	50	59.4
2020	72	65.7
2021	66	65.7
2022	85	65.7
2023	60	65.7
2024	54	65.7
2025	55	65.7
2026	68	65.7

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

First to last qualifying date each year at Ravenna
Year	First date	Last date
1893	1893-03-30	1893-10-08
1894	1894-04-28	1894-09-28
1895	1895-03-28	1895-09-20
1896	1896-04-27	1896-10-01
1897	1897-05-19	1897-10-07
1898	1898-06-02	1898-09-27
1899	1899-04-12	1899-10-22
1900	1900-05-11	1900-10-05
1904	1904-05-22	1904-10-04
1905	1905-05-01	1905-10-05
1906	1906-04-11	1906-10-12
1907	1907-03-21	1907-09-23
1908	1908-04-13	1908-10-14
1909	1909-05-03	1909-10-06
1910	1910-03-21	1910-10-16
1911	1911-05-08	1911-09-28
1912	1912-05-02	1912-10-05
1913	1913-04-30	1913-09-10
1914	1914-04-20	1914-09-29
1915	1915-05-11	1915-09-19
1916	1916-04-11	1916-10-07
1917	1917-05-16	1917-09-07
1918	1918-05-02	1918-10-15
1919	1919-06-18	1919-10-01
1920	1920-05-22	1920-10-13
1921	1921-03-18	1921-10-16
1922	1922-05-05	1922-10-27
1923	1923-04-19	1923-09-05
1924	1924-04-14	1924-10-01
1925	1925-04-21	1925-09-29
1926	1926-04-29	1926-10-17
1927	1927-04-26	1927-10-25
1928	1928-03-23	1928-10-11
1929	1929-04-03	1929-09-25
1930	1930-04-09	1930-09-24
1931	1931-04-07	1931-10-10
1932	1932-05-13	1932-10-14
1933	1933-05-18	1933-10-14
1934	1934-04-29	1934-10-07
1935	1935-03-15	1935-10-15
1936	1936-04-13	1936-09-22
1937	1937-05-20	1937-10-29
1938	1938-04-14	1938-10-16
1939	1939-04-22	1939-10-15
1940	1940-04-14	1940-10-21
1941	1941-05-14	1941-09-21
1942	1942-05-26	1942-10-07
1943	1943-03-29	1943-10-19
1944	1944-05-12	1944-10-13
1945	1945-04-09	1945-11-05
1946	1946-03-31	1946-09-26
1947	1947-05-03	1947-10-21
1948	1948-04-17	1948-09-20
1949	1949-04-25	1949-10-03
1950	1950-04-22	1950-10-30
1951	1951-06-16	1951-10-02
1952	1952-05-04	1952-09-30
1953	1953-04-21	1953-10-10
1954	1954-04-06	1954-10-09
1955	1955-04-26	1955-09-21
1956	1956-03-25	1956-10-12
1957	1957-06-03	1957-09-25
1958	1958-05-11	1958-10-19
1959	1959-04-30	1959-09-15
1960	1960-04-21	1960-10-11
1961	1961-05-11	1961-10-17
1962	1962-04-20	1962-10-14
1963	1963-04-01	1963-10-19
1964	1964-04-16	1964-10-16
1965	1965-04-29	1965-10-09
1966	1966-05-04	1966-10-13
1967	1967-04-29	1967-10-04
1968	1968-03-30	1968-10-15
1969	1969-05-25	1969-09-30
1970	1970-04-27	1970-09-21
1971	1971-06-10	1971-10-10
1972	1972-04-06	1972-09-20
1973	1973-05-18	1973-09-10
1974	1974-05-27	1974-10-10
1975	1975-05-17	1975-10-13
1976	1976-05-04	1976-10-01
1977	1977-04-10	1977-09-09
1978	1978-03-31	1978-10-20
1979	1979-05-28	1979-09-30
1980	1980-04-19	1980-10-09
1981	1981-04-25	1981-09-30
1982	1982-06-28	1982-09-11
1983	1983-05-24	1983-09-27
1984	1984-05-31	1984-09-23
1985	1985-04-15	1985-09-19
1986	1986-03-27	1986-09-24
1987	1987-04-17	1987-10-04
1988	1988-04-07	1988-09-26
1989	1989-03-10	1989-10-13
1990	1990-04-22	1990-10-05
1991	1991-04-05	1991-10-22
1992	1992-04-14	1992-10-14
1993	1993-05-27	1993-10-06
1994	1994-04-17	1994-09-30
1995	1995-06-06	1995-10-11
1996	1996-04-24	1996-10-12
1997	1997-05-16	1997-10-06
1998	1998-05-17	1998-09-26
1999	1999-06-04	1999-09-24
2000	2000-05-22	2000-10-01
2001	2001-05-01	2001-10-04
2002	2002-04-14	2002-10-01
2003	2003-03-31	2003-10-22
2004	2004-04-16	2004-09-19
2005	2005-05-20	2005-10-19
2006	2006-04-14	2006-10-08
2007	2007-04-30	2007-10-07
2008	2008-06-15	2008-09-27
2009	2009-04-24	2009-08-25
2010	2010-05-23	2010-10-09
2011	2011-04-10	2011-10-05
2012	2012-04-01	2012-10-04
2013	2013-04-29	2013-09-27
2014	2014-05-20	2014-09-21
2015	2015-03-17	2015-10-12
2016	2016-05-30	2016-09-24
2017	2017-05-08	2017-09-24
2018	2018-05-23	2018-10-04
2019	2019-04-21	2019-10-01
2020	2020-05-02	2020-10-12
2021	2021-04-05	2021-09-29
2022	2022-04-13	2022-10-24
2023	2023-04-13	2023-10-21
2024	2024-05-18	2024-10-11
2025	2025-05-11	2025-10-05
2026	2026-03-20	2026-09-19

Every Fixed Threshold

Fixed thresholds at Ravenna
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	131	120	1939	68
35 C (95 F): Days	127	69	1934	8
40 C (104 F): Days	49	34	1936	1
45 C (113 F): Days	3	4	1936	1
90 F (32.2 C): Days	131	92	1939	31
100 F (37.8 C): Days	99	43	1936	3
110 F (43.3 C): Days	5	11	1936	2
0 C (32 F): Ice days (max	131	70	1978	11
0 C (32 F): Frost days (min	132	185	1970	91
-10 C (14 F): Days with min	132	82	1978	25
-20 C (-4 F): Days with min	131	27	1936	6
-30 C (-22 F): Days with min	33	4	1983	2
20 C (68 F): Tropical nights (min	131	41	1936	15
25 C (77 F): Days with min	24	10	1934	1
10 mm (0.39 in): Days with 10 mm or more rain	124	34	1977	15
25 mm (0.98 in): Days with 25 mm or more rain	124	13	1987	3
50 mm (1.97 in): Days with 50 mm or more rain	84	4	2006	1
100 mm (3.94 in): Days with 100 mm or more rain	9	1	1899	1
10 cm (3.9 in): Days with 10 cm or more snowfall	77	5	1971	1
25 cm (9.8 in): Days with 25 cm or more snowfall	10	1	1924	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1893.

Download the Data

Data for Ravenna 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).

Ravenna Threshold Days by Year (USC00257040)

Key Facts for Ravenna Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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