Hillside Threshold Days by Year (SF001472250)

4 fixed thresholds counted per year at Hillside (SF001472250): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Hillside Thresholds

Hillside: days with 10 mm (0.39 in) or more of precipitation in 70 years, most in 1974 with 34.
Hillside: days with 25 mm (0.98 in) or more of precipitation in 60 years, most in 1974 with 14.
Hillside: days with 50 mm (1.97 in) or more of precipitation in 19 years, most in 1963 with 3.
Hillside: days with 100 mm (3.94 in) or more of precipitation in 1 years, most in 1967 with 1.
4 fixed thresholds have at least one qualifying day at Hillside.

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

70 years with a qualifying day

Days per year at Hillside with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 34 in 1974.

Days with 10 mm (0.39 in) or more of precipitation per year at Hillside
Year	Days	Decade average
1913	9	9.4
1914	11	9.4
1915	9	9.4
1916	11	9.4
1917	13	9.4
1918	6	9.4
1919	7	9.4
1920	7	8.8
1921	12	8.8
1922	4	8.8
1923	6	8.8
1924	9	8.8
1925	14	8.8
1926	5	8.8
1927	7	8.8
1928	8	8.8
1929	16	8.8
1930	13	10.8
1931	11	10.8
1932	4	10.8
1933	5	10.8
1934	12	10.8
1935	8	10.8
1936	10	10.8
1937	14	10.8
1938	19	10.8
1939	12	10.8
1940	20	16.1
1941	16	16.1
1942	20	16.1
1943	21	16.1
1944	14	16.1
1945	7	16.1
1946	15	16.1
1947	20	16.1
1948	17	16.1
1949	11	16.1
1950	31	18
1951	9	18
1952	18	18
1959	14	18
1960	16	16.1
1961	20	16.1
1962	23	16.1
1963	23	16.1
1964	7	16.1
1965	14	16.1
1966	9	16.1
1967	28	16.1
1968	11	16.1
1969	10	16.1
1970	11	18.9
1971	14	18.9
1972	16	18.9
1973	10	18.9
1974	34	18.9
1975	19	18.9
1976	29	18.9
1977	19	18.9
1978	18	18.9
1979	19	18.9
1980	10	16.8
1981	23	16.8
1982	17	16.8
1983	11	16.8
1984	15	16.8
1985	32	16.8
1986	17	16.8
1987	14	16.8
1988	12	16.8

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

First to last qualifying date each year at Hillside
Year	First date	Last date
1913	1913-02-12	1913-11-07
1914	1914-01-19	1914-12-03
1915	1915-01-24	1915-11-24
1916	1916-01-05	1916-10-31
1917	1917-01-18	1917-12-30
1918	1918-01-12	1918-09-25
1919	1919-02-17	1919-12-27
1920	1920-01-30	1920-12-18
1921	1921-02-03	1921-12-09
1922	1922-01-11	1922-11-21
1923	1923-02-09	1923-12-17
1924	1924-03-11	1924-12-18
1925	1925-02-12	1925-12-05
1926	1926-02-01	1926-11-17
1927	1927-01-25	1927-12-28
1928	1928-01-04	1928-11-23
1929	1929-01-18	1929-12-30
1930	1930-01-14	1930-12-26
1931	1931-02-14	1931-12-31
1932	1932-02-08	1932-11-22
1933	1933-03-05	1933-12-30
1934	1934-01-02	1934-12-09
1935	1935-01-14	1935-11-02
1936	1936-02-17	1936-11-26
1937	1937-01-19	1937-12-23
1938	1938-01-21	1938-12-17
1939	1939-01-21	1939-10-20
1940	1940-01-28	1940-12-24
1941	1941-01-03	1941-10-28
1942	1942-02-12	1942-12-16
1943	1943-01-16	1943-12-12
1944	1944-01-02	1944-10-27
1945	1945-01-31	1945-12-03
1946	1946-01-27	1946-12-20
1947	1947-01-08	1947-12-25
1948	1948-01-23	1948-12-16
1949	1949-01-13	1949-12-19
1950	1950-01-06	1950-12-28
1951	1951-01-03	1951-10-04
1952	1952-02-01	1952-12-17
1959	1959-01-25	1959-12-02
1960	1960-01-25	1960-12-29
1961	1961-01-03	1961-12-17
1962	1962-01-20	1962-12-28
1963	1963-01-03	1963-12-09
1964	1964-02-12	1964-12-28
1965	1965-01-15	1965-11-17
1966	1966-01-11	1966-12-18
1967	1967-01-02	1967-11-24
1968	1968-03-06	1968-12-10
1969	1969-01-08	1969-11-21
1970	1970-01-27	1970-12-26
1971	1971-01-25	1971-12-02
1972	1972-01-10	1972-11-24
1973	1973-02-19	1973-12-24
1974	1974-01-05	1974-12-18
1975	1975-01-23	1975-12-20
1976	1976-01-06	1976-12-25
1977	1977-01-28	1977-12-31
1978	1978-01-10	1978-12-09
1979	1979-01-26	1979-12-25
1980	1980-01-19	1980-11-03
1981	1981-01-18	1981-11-24
1982	1982-01-23	1982-12-03
1983	1983-02-28	1983-12-20
1984	1984-01-08	1984-11-14
1985	1985-01-15	1985-12-18
1986	1986-01-17	1986-11-06
1987	1987-02-09	1987-11-28
1988	1988-01-18	1988-03-11

Every Fixed Threshold

Fixed thresholds at Hillside
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	70	34	1974	12
25 mm (0.98 in): Days with 25 mm or more rain	60	14	1974	5
50 mm (1.97 in): Days with 50 mm or more rain	19	3	1963	1
100 mm (3.94 in): Days with 100 mm or more rain	1	1	1967	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1913.

Download the Data

Data for Hillside 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).

Hillside Threshold Days by Year (SF001472250)

Key Facts for Hillside Thresholds

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

Every Fixed Threshold

Download the Data

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