Idalia Threshold Days by Year (SF004442030)

4 fixed thresholds counted per year at Idalia (SF004442030): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Idalia Thresholds

Idalia: days with 10 mm (0.39 in) or more of precipitation in 68 years, most in 1960 with 43.
Idalia: days with 25 mm (0.98 in) or more of precipitation in 68 years, most in 1973 with 18.
Idalia: days with 50 mm (1.97 in) or more of precipitation in 53 years, most in 1936 with 7.
Idalia: days with 100 mm (3.94 in) or more of precipitation in 7 years, most in 1921 with 1.
4 fixed thresholds have at least one qualifying day at Idalia.

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

68 years with a qualifying day

Days per year at Idalia with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 43 in 1960.

Days with 10 mm (0.39 in) or more of precipitation per year at Idalia
Year	Days	Decade average
1920	30	30.3
1921	41	30.3
1922	32	30.3
1923	17	30.3
1924	34	30.3
1929	28	30.3
1930	19	26
1931	16	26
1932	28	26
1933	23	26
1934	30	26
1935	22	26
1936	27	26
1937	32	26
1938	29	26
1939	34	26
1940	25	25.6
1941	24	25.6
1942	28	25.6
1944	23	25.6
1945	17	25.6
1946	24	25.6
1947	31	25.6
1948	30	25.6
1949	28	25.6
1950	24	29.5
1951	33	29.5
1952	21	29.5
1953	23	29.5
1954	26	29.5
1955	33	29.5
1956	35	29.5
1957	42	29.5
1958	31	29.5
1959	27	29.5
1960	43	32.1
1961	33	32.1
1962	24	32.1
1963	33	32.1
1964	33	32.1
1965	31	32.1
1966	26	32.1
1967	35	32.1
1968	28	32.1
1969	35	32.1
1972	31	28.3
1973	41	28.3
1974	28	28.3
1975	21	28.3
1977	18	28.3
1978	32	28.3
1979	27	28.3
1980	27	29.9
1981	38	29.9
1982	18	29.9
1983	31	29.9
1986	31	29.9
1987	40	29.9
1988	24	29.9
1989	30	29.9
1990	21	28
1991	27	28
1992	17	28
1993	28	28
1994	29	28
1995	30	28
1996	33	28
1997	39	28

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

First to last qualifying date each year at Idalia
Year	First date	Last date
1920	1920-01-05	1920-12-30
1921	1921-01-05	1921-12-25
1922	1922-01-10	1922-12-31
1923	1923-01-04	1923-12-29
1924	1924-01-07	1924-12-28
1929	1929-01-26	1929-12-20
1930	1930-01-14	1930-12-24
1931	1931-01-04	1931-12-31
1932	1932-01-14	1932-12-30
1933	1933-01-13	1933-12-24
1934	1934-02-08	1934-12-26
1935	1935-01-14	1935-12-28
1936	1936-01-10	1936-12-27
1937	1937-01-01	1937-12-29
1938	1938-01-29	1938-12-31
1939	1939-01-01	1939-12-26
1940	1940-01-16	1940-12-31
1941	1941-01-11	1941-12-20
1942	1942-01-12	1942-12-29
1944	1944-01-02	1944-12-31
1945	1945-01-07	1945-12-30
1946	1946-01-08	1946-12-20
1947	1947-01-01	1947-12-31
1948	1948-01-11	1948-12-16
1949	1949-01-12	1949-12-24
1950	1950-01-07	1950-12-30
1951	1951-01-01	1951-12-22
1952	1952-01-23	1952-12-29
1953	1953-01-08	1953-12-30
1954	1954-01-07	1954-12-27
1955	1955-01-02	1955-12-29
1956	1956-02-03	1956-12-28
1957	1957-01-07	1957-12-17
1958	1958-01-05	1958-12-31
1959	1959-01-03	1959-12-19
1960	1960-01-18	1960-12-31
1961	1961-01-19	1961-12-27
1962	1962-01-06	1962-12-11
1963	1963-01-05	1963-12-30
1964	1964-01-02	1964-12-28
1965	1965-01-06	1965-12-29
1966	1966-01-05	1966-12-21
1967	1967-01-02	1967-12-16
1968	1968-01-09	1968-12-26
1969	1969-01-12	1969-12-22
1972	1972-01-11	1972-12-25
1973	1973-01-01	1973-12-09
1974	1974-01-06	1974-12-26
1975	1975-01-14	1975-11-27
1977	1977-01-19	1977-12-31
1978	1978-01-04	1978-12-22
1979	1979-01-17	1979-12-13
1980	1980-01-03	1980-12-14
1981	1981-01-04	1981-12-30
1982	1982-01-01	1982-12-21
1983	1983-01-12	1983-12-26
1986	1986-01-12	1986-12-26
1987	1987-01-07	1987-12-17
1988	1988-01-09	1988-12-25
1989	1989-01-02	1989-12-28
1990	1990-01-10	1990-12-14
1991	1991-01-01	1991-12-27
1992	1992-01-13	1992-12-29
1993	1993-01-09	1993-12-26
1994	1994-01-02	1994-12-26
1995	1995-01-07	1995-12-29
1996	1996-01-01	1996-12-24
1997	1997-01-03	1997-11-28

Every Fixed Threshold

Fixed thresholds at Idalia
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	68	43	1960	39
25 mm (0.98 in): Days with 25 mm or more rain	68	18	1973	13
50 mm (1.97 in): Days with 50 mm or more rain	53	7	1936	3
100 mm (3.94 in): Days with 100 mm or more rain	7	1	1921	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1920.

Download the Data

Data for Idalia 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).

Idalia Threshold Days by Year (SF004442030)

Key Facts for Idalia Thresholds

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

Every Fixed Threshold

Download the Data

Related