Waterdale Threshold Days by Year

20 fixed thresholds counted per year at Waterdale (USC00058839): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Waterdale Thresholds

Waterdale: days with a maximum temperature at or above 30 C (86 F) in 112 years, most in 1934 with 91.
Waterdale: days with a maximum temperature at or above 90 F (32.2 C) in 112 years, most in 1936 with 60.
Waterdale: days with a maximum temperature at or below 0 C (32 F) in 112 years, most in 1978 with 42.
Waterdale: nights with a minimum temperature at or below 0 C (32 F) in 110 years, most in 1930 with 210.
20 fixed thresholds have at least one qualifying day at Waterdale.

Days at or above 30 C (86 F)

112 years with a qualifying day

Days per year at Waterdale with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 91 in 1934.

Days at or above 30 C (86 F) per year at Waterdale
Year	Days	Decade average
1903	41	35.3
1904	28	35.3
1905	34	35.3
1906	22	35.3
1907	34	35.3
1908	36	35.3
1909	52	35.3
1910	65	53.2
1912	52	53.2
1913	62	53.2
1914	50	53.2
1916	55	53.2
1917	35	53.2
1923	19	33.3
1924	54	33.3
1925	45	33.3
1926	27	33.3
1927	24	33.3
1928	22	33.3
1929	42	33.3
1930	31	58.9
1931	54	58.9
1932	49	58.9
1933	72	58.9
1934	91	58.9
1936	90	58.9
1937	41	58.9
1938	45	58.9
1939	57	58.9
1940	70	51.7
1941	37	51.7
1942	44	51.7
1943	53	51.7
1944	52	51.7
1945	43	51.7
1946	54	51.7
1947	53	51.7
1948	67	51.7
1949	44	51.7
1950	27	56.8
1951	36	56.8
1952	59	56.8
1953	69	56.8
1954	79	56.8
1955	61	56.8
1956	69	56.8
1957	49	56.8
1958	54	56.8
1959	65	56.8
1960	63	50.3
1961	34	50.3
1962	46	50.3
1963	63	50.3
1964	70	50.3
1965	34	50.3
1966	60	50.3
1967	37	50.3
1968	44	50.3
1969	52	50.3
1970	49	44.1
1971	57	44.1
1972	34	44.1
1973	39	44.1
1974	51	44.1
1975	41	44.1
1976	40	44.1
1977	40	44.1
1978	50	44.1
1979	40	44.1
1980	60	52.6
1981	56	52.6
1982	40	52.6
1984	59	52.6
1985	50	52.6
1986	45	52.6
1987	48	52.6
1988	62	52.6
1989	53	52.6
1990	51	48.1
1991	45	48.1
1992	36	48.1
1993	28	48.1
1995	60	48.1
1996	55	48.1
1997	54	48.1
1998	56	48.1
2000	79	59.9
2001	68	59.9
2002	67	59.9
2003	63	59.9
2004	32	59.9
2005	71	59.9
2006	57	59.9
2007	68	59.9
2008	56	59.9
2009	38	59.9
2010	62	53.7
2012	66	53.7
2013	51	53.7
2014	38	53.7
2015	58	53.7
2016	51	53.7
2017	40	53.7
2018	61	53.7
2019	56	53.7
2020	65	59.1
2021	63	59.1
2022	62	59.1
2023	36	59.1
2024	60	59.1
2025	52	59.1
2026	76	59.1

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

First to last qualifying date each year at Waterdale
Year	First date	Last date
1903	1903-06-27	1903-09-04
1904	1904-06-28	1904-09-09
1905	1905-06-13	1905-09-23
1906	1906-06-16	1906-09-09
1907	1907-06-15	1907-09-12
1908	1908-05-19	1908-09-24
1909	1909-06-04	1909-09-02
1910	1910-04-27	1910-10-10
1912	1912-05-26	1912-09-04
1913	1913-05-26	1913-09-13
1914	1914-06-09	1914-09-27
1916	1916-05-05	1916-09-11
1917	1917-06-09	1917-09-04
1923	1923-05-31	1923-09-09
1924	1924-06-11	1924-09-24
1925	1925-05-19	1925-10-03
1926	1926-05-23	1926-10-17
1927	1927-05-26	1927-09-16
1928	1928-06-30	1928-09-19
1929	1929-05-14	1929-09-18
1930	1930-05-21	1930-08-20
1931	1931-06-16	1931-09-13
1932	1932-05-18	1932-09-18
1933	1933-05-18	1933-09-24
1934	1934-05-07	1934-09-28
1936	1936-05-04	1936-09-25
1937	1937-05-14	1937-09-20
1938	1938-05-28	1938-09-16
1939	1939-05-30	1939-09-18
1940	1940-05-03	1940-09-08
1941	1941-05-12	1941-09-20
1942	1942-05-26	1942-09-29
1943	1943-06-19	1943-09-12
1944	1944-06-20	1944-09-22
1945	1945-06-13	1945-09-11
1946	1946-06-04	1946-09-26
1947	1947-05-05	1947-09-19
1948	1948-05-16	1948-09-25
1949	1949-06-17	1949-09-25
1950	1950-05-23	1950-09-04
1951	1951-05-28	1951-09-11
1952	1952-06-07	1952-09-19
1953	1953-06-09	1953-10-09
1954	1954-04-28	1954-09-28
1955	1955-05-06	1955-09-18
1956	1956-06-02	1956-10-07
1957	1957-06-20	1957-09-30
1958	1958-05-29	1958-09-23
1959	1959-06-08	1959-09-14
1960	1960-06-03	1960-09-06
1961	1961-05-10	1961-08-28
1962	1962-05-11	1962-10-10
1963	1963-05-06	1963-09-19
1964	1964-05-15	1964-10-01
1965	1965-06-19	1965-10-09
1966	1966-05-07	1966-09-24
1967	1967-05-23	1967-09-29
1968	1968-06-02	1968-09-28
1969	1969-05-26	1969-09-06
1970	1970-05-17	1970-09-19
1971	1971-06-15	1971-09-14
1972	1972-06-02	1972-09-18
1973	1973-06-08	1973-08-28
1974	1974-05-27	1974-09-11
1975	1975-06-25	1975-09-01
1976	1976-06-09	1976-09-07
1977	1977-06-03	1977-09-09
1978	1978-05-16	1978-09-10
1979	1979-06-13	1979-10-08
1980	1980-06-06	1980-09-20
1981	1981-06-07	1981-09-24
1982	1982-06-29	1982-09-11
1984	1984-05-21	1984-09-20
1985	1985-04-17	1985-09-07
1986	1986-05-05	1986-08-30
1987	1987-06-04	1987-09-03
1988	1988-05-13	1988-09-10
1989	1989-04-21	1989-10-13
1990	1990-06-04	1990-09-15
1991	1991-05-19	1991-10-15
1992	1992-04-29	1992-09-23
1993	1993-06-12	1993-10-05
1995	1995-06-14	1995-09-18
1996	1996-05-15	1996-10-12
1997	1997-05-18	1997-09-16
1998	1998-05-31	1998-09-19
2000	2000-05-05	2000-09-18
2001	2001-05-14	2001-09-28
2002	2002-05-31	2002-09-09
2003	2003-05-28	2003-10-20
2004	2004-05-06	2004-09-18
2005	2005-05-20	2005-10-03
2006	2006-05-20	2006-09-15
2007	2007-06-05	2007-09-23
2008	2008-05-19	2008-09-01
2009	2009-06-23	2009-09-27
2010	2010-05-23	2010-09-29
2012	2012-05-05	2012-09-11
2013	2013-06-04	2013-09-09
2014	2014-05-29	2014-09-27
2015	2015-06-03	2015-10-12
2016	2016-06-10	2016-09-21
2017	2017-06-10	2017-09-22
2018	2018-05-26	2018-09-24
2019	2019-06-14	2019-09-18
2020	2020-05-20	2020-09-25
2021	2021-06-05	2021-09-28
2022	2022-05-28	2022-09-21
2023	2023-06-20	2023-09-08
2024	2024-06-06	2024-10-06
2025	2025-06-11	2025-09-11
2026	2026-03-22	2026-10-07

Every Fixed Threshold

Fixed thresholds at Waterdale
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	112	91	1934	76
35 C (95 F): Days	100	23	1936	15
40 C (104 F): Days	1	3	1934	3
90 F (32.2 C): Days	112	60	1936	44
100 F (37.8 C): Days	35	9	1934	2
0 C (32 F): Ice days (max	112	42	1978	4
0 C (32 F): Frost days (min	110	210	1930	81
-10 C (14 F): Days with min	110	82	1929	12
-20 C (-4 F): Days with min	108	21	1929	1
-30 C (-22 F): Days with min	25	4	1963	1
-40 C (-40 F): Days with min	1	1	1930	1
20 C (68 F): Tropical nights (min	13	5	1936	3
25 C (77 F): Days with min	1	2	1936	2
10 mm (0.39 in): Days with 10 mm or more rain	110	25	2023	5
25 mm (0.98 in): Days with 25 mm or more rain	99	8	1979	2
50 mm (1.97 in): Days with 50 mm or more rain	36	2	1923	1
100 mm (3.94 in): Days with 100 mm or more rain	2	1	1938	1
10 cm (3.9 in): Days with 10 cm or more snowfall	86	9	1948	1
25 cm (9.8 in): Days with 25 cm or more snowfall	33	2	1944	1
50 cm (19.7 in): Days with 50 cm or more snowfall	3	1	1944	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1903.

Download the Data

Data for Waterdale 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 2026-10-16. Last revised 16 October 2026 (2026-10-16).

Waterdale Threshold Days by Year

Key Facts for Waterdale Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

Related