Wahroonga Reservoir Threshold Days by Year

5 fixed thresholds counted per year at Wahroonga Reservoir (ASN00066063): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Wahroonga Reservoir Thresholds

Wahroonga Reservoir: days with 10 mm (0.39 in) or more of precipitation in 43 years, most in 1950 with 65.
Wahroonga Reservoir: days with 25 mm (0.98 in) or more of precipitation in 43 years, most in 1950 with 30.
Wahroonga Reservoir: days with 50 mm (1.97 in) or more of precipitation in 42 years, most in 1952 with 11.
Wahroonga Reservoir: days with 100 mm (3.94 in) or more of precipitation in 26 years, most in 1956 with 5.
5 fixed thresholds have at least one qualifying day at Wahroonga Reservoir.

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

43 years with a qualifying day

Days per year at Wahroonga Reservoir with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 65 in 1950.

Days with 10 mm (0.39 in) or more of precipitation per year at Wahroonga Reservoir
Year	Days	Decade average
1908	35	35
1941	17	29.9
1942	30	29.9
1943	36	29.9
1944	22	29.9
1945	31	29.9
1946	22	29.9
1947	40	29.9
1948	27	29.9
1949	44	29.9
1950	65	38.6
1951	36	38.6
1952	38	38.6
1953	32	38.6
1954	36	38.6
1955	48	38.6
1956	37	38.6
1957	19	38.6
1958	32	38.6
1959	43	38.6
1960	36	33.9
1961	37	33.9
1962	37	33.9
1963	51	33.9
1964	26	33.9
1965	26	33.9
1966	30	33.9
1967	38	33.9
1968	13	33.9
1969	45	33.9
1970	28	30.6
1971	32	30.6
1972	26	30.6
1973	36	30.6
1974	45	30.6
1975	24	30.6
1976	37	30.6
1979	17	30.6
1980	18	26.4
1984	31	26.4
1985	33	26.4
1986	21	26.4
1987	29	26.4

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

First to last qualifying date each year at Wahroonga Reservoir
Year	First date	Last date
1908	1908-01-25	1908-12-22
1941	1941-01-03	1941-12-21
1942	1942-01-26	1942-12-27
1943	1943-01-02	1943-12-18
1944	1944-01-02	1944-10-17
1945	1945-01-12	1945-12-28
1946	1946-02-09	1946-12-06
1947	1947-01-04	1947-12-25
1948	1948-01-02	1948-12-31
1949	1949-01-01	1949-12-20
1950	1950-01-01	1950-12-09
1951	1951-01-14	1951-10-13
1952	1952-01-07	1952-12-31
1953	1953-01-06	1953-11-27
1954	1954-01-01	1954-12-17
1955	1955-01-22	1955-12-29
1956	1956-01-12	1956-12-03
1957	1957-01-23	1957-12-31
1958	1958-01-01	1958-12-04
1959	1959-01-02	1959-12-19
1960	1960-01-05	1960-12-20
1961	1961-01-03	1961-12-27
1962	1962-01-08	1962-12-25
1963	1963-01-04	1963-12-30
1964	1964-01-14	1964-12-23
1965	1965-01-13	1965-12-15
1966	1966-01-18	1966-12-31
1967	1967-01-26	1967-11-16
1968	1968-01-05	1968-12-26
1969	1969-01-02	1969-12-13
1970	1970-01-22	1970-12-29
1971	1971-01-19	1971-12-16
1972	1972-01-07	1972-12-26
1973	1973-01-29	1973-12-28
1974	1974-01-07	1974-12-24
1975	1975-01-06	1975-12-22
1976	1976-01-14	1976-12-24
1979	1979-01-22	1979-11-21
1980	1980-01-02	1980-12-31
1984	1984-01-03	1984-12-27
1985	1985-02-08	1985-12-24
1986	1986-01-16	1986-11-27
1987	1987-01-01	1987-12-29

Every Fixed Threshold

Fixed thresholds at Wahroonga Reservoir
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	43	65	1950	29
25 mm (0.98 in): Days with 25 mm or more rain	43	30	1950	17
50 mm (1.97 in): Days with 50 mm or more rain	42	11	1952	5
100 mm (3.94 in): Days with 100 mm or more rain	26	5	1956	1
200 mm (7.87 in): Days with 200 mm or more rain	1	1	1942	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1908.

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Data for Wahroonga Reservoir 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

Data as of 2025-12-31. Last revised 31 December 2025 (2025-12-31).

Wahroonga Reservoir Threshold Days by Year

Key Facts for Wahroonga Reservoir Thresholds

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

Every Fixed Threshold

Download the Data

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