Purdum Threshold Days by Year (USC00256970)

21 fixed thresholds counted per year at Purdum (USC00256970): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Purdum Thresholds

Purdum: nights with a minimum temperature at or below 0 C (32 F) in 108 years, most in 1917 with 192.
Purdum: nights with a minimum temperature at or below -10 C (14 F) in 108 years, most in 1978 with 93.
Purdum: nights with a minimum temperature at or below -20 C (-4 F) in 108 years, most in 1916 with 36.
Purdum: days with 10 mm (0.39 in) or more of precipitation in 108 years, most in 2009 with 35.
21 fixed thresholds have at least one qualifying day at Purdum.

Days at or above 30 C (86 F)

103 years with a qualifying day

Days per year at Purdum with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 97 in 1934.

Days at or above 30 C (86 F) per year at Purdum
Year	Days	Decade average
1903	37	53.3
1904	43	53.3
1905	57	53.3
1906	55	53.3
1907	60	53.3
1908	45	53.3
1909	76	53.3
1910	72	61
1911	62	61
1912	43	61
1913	76	61
1914	65	61
1915	24	61
1916	68	61
1917	59	61
1918	74	61
1919	67	61
1920	60	67.1
1921	79	67.1
1922	82	67.1
1923	57	67.1
1924	57	67.1
1925	69	67.1
1926	71	67.1
1927	60	67.1
1928	61	67.1
1929	75	67.1
1930	75	84.5
1931	95	84.5
1932	78	84.5
1933	88	84.5
1934	97	84.5
1935	67	84.5
1936	88	84.5
1937	86	84.5
1938	79	84.5
1939	92	84.5
1940	85	67.5
1941	70	67.5
1942	62	67.5
1943	71	67.5
1944	56	67.5
1945	50	67.5
1946	74	67.5
1947	61	67.5
1948	76	67.5
1949	70	67.5
1950	36	61.8
1951	30	61.8
1952	65	61.8
1953	72	61.8
1954	70	61.8
1955	85	61.8
1956	81	61.8
1957	50	61.8
1958	57	61.8
1959	72	61.8
1960	68	65.7
1961	70	65.7
1962	52	65.7
1963	83	65.7
1964	72	65.7
1965	45	65.7
1966	67	65.7
1967	58	65.7
1968	72	65.7
1969	70	65.7
1970	89	65
1971	72	65
1972	60	65
1973	60	65
1974	61	65
1975	60	65
1976	69	65
1977	50	65
1978	70	65
1979	59	65
1980	81	64.3
1983	73	64.3
1984	57	64.3
1986	47	64.3
1987	59	64.3
1988	69	64.3
1995	58	56
1997	54	56
2002	60	56
2006	71	56
2007	65	56
2008	44	56
2009	40	56
2010	63	62.6
2011	65	62.6
2012	89	62.6
2013	55	62.6
2014	48	62.6
2015	59	62.6
2016	61	62.6
2017	61	62.6
2020	78	79.4
2021	83	79.4
2023	71	79.4
2024	74	79.4
2026	91	79.4

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

First to last qualifying date each year at Purdum
Year	First date	Last date
1903	1903-05-17	1903-10-19
1904	1904-05-22	1904-10-03
1905	1905-06-03	1905-10-07
1906	1906-04-23	1906-10-12
1907	1907-05-11	1907-09-17
1908	1908-04-12	1908-10-15
1909	1909-04-17	1909-10-06
1910	1910-03-21	1910-10-16
1911	1911-05-09	1911-09-22
1912	1912-05-25	1912-09-08
1913	1913-04-30	1913-10-13
1914	1914-05-09	1914-09-27
1915	1915-05-10	1915-10-23
1916	1916-04-11	1916-10-03
1917	1917-05-15	1917-10-14
1918	1918-05-03	1918-10-16
1919	1919-04-18	1919-09-26
1920	1920-05-24	1920-10-10
1921	1921-04-23	1921-10-21
1922	1922-05-09	1922-10-27
1923	1923-04-18	1923-09-09
1924	1924-04-14	1924-10-01
1925	1925-04-21	1925-09-28
1926	1926-04-16	1926-10-07
1927	1927-04-26	1927-10-25
1928	1928-04-28	1928-10-10
1929	1929-04-29	1929-10-15
1930	1930-04-08	1930-10-10
1931	1931-04-12	1931-10-02
1932	1932-05-12	1932-10-14
1933	1933-05-17	1933-10-14
1934	1934-04-29	1934-10-07
1935	1935-06-09	1935-09-24
1936	1936-05-03	1936-09-25
1937	1937-05-28	1937-10-29
1938	1938-05-28	1938-10-06
1939	1939-04-22	1939-09-27
1940	1940-04-14	1940-10-25
1941	1941-05-13	1941-09-20
1942	1942-05-25	1942-10-10
1943	1943-03-29	1943-09-26
1944	1944-05-15	1944-09-26
1945	1945-05-24	1945-10-16
1946	1946-03-31	1946-09-26
1947	1947-05-18	1947-10-21
1948	1948-04-18	1948-09-19
1949	1949-04-24	1949-09-25
1950	1950-04-22	1950-10-30
1951	1951-06-16	1951-10-01
1952	1952-04-07	1952-10-24
1953	1953-05-09	1953-10-09
1954	1954-05-14	1954-10-08
1955	1955-04-26	1955-10-19
1956	1956-05-18	1956-10-12
1957	1957-05-07	1957-09-29
1958	1958-04-16	1958-10-19
1959	1959-05-01	1959-09-15
1960	1960-04-21	1960-10-07
1961	1961-05-10	1961-10-16
1962	1962-04-20	1962-10-14
1963	1963-04-01	1963-10-19
1964	1964-04-16	1964-10-15
1965	1965-04-29	1965-10-09
1966	1966-05-04	1966-10-08
1967	1967-05-09	1967-10-12
1968	1968-03-30	1968-10-30
1969	1969-05-14	1969-09-24
1970	1970-05-17	1970-10-05
1971	1971-04-15	1971-10-10
1972	1972-04-06	1972-09-19
1973	1973-05-18	1973-09-10
1974	1974-05-27	1974-10-10
1975	1975-05-04	1975-10-04
1976	1976-05-19	1976-10-02
1977	1977-04-09	1977-09-08
1978	1978-05-10	1978-10-20
1979	1979-05-06	1979-09-30
1980	1980-04-20	1980-10-09
1983	1983-05-26	1983-09-26
1984	1984-05-31	1984-09-21
1986	1986-03-28	1986-09-04
1987	1987-04-17	1987-10-04
1988	1988-04-07	1988-09-26
1995	1995-06-07	1995-10-13
1997	1997-05-11	1997-10-03
2002	2002-05-27	2002-09-09
2006	2006-04-14	2006-10-08
2007	2007-04-29	2007-10-06
2008	2008-05-18	2008-09-28
2009	2009-04-23	2009-09-10
2010	2010-05-23	2010-09-23
2011	2011-05-09	2011-10-05
2012	2012-03-27	2012-10-04
2013	2013-05-13	2013-09-30
2014	2014-05-26	2014-09-28
2015	2015-03-16	2015-10-11
2016	2016-06-08	2016-09-27
2017	2017-03-19	2017-09-21
2020	2020-05-01	2020-10-09
2021	2021-04-05	2021-10-08
2023	2023-04-11	2023-10-02
2024	2024-04-13	2024-10-10
2026	2026-03-19	2026-08-31

Every Fixed Threshold

Fixed thresholds at Purdum
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	103	97	1934	91
35 C (95 F): Days	103	51	1934	17
40 C (104 F): Days	49	19	1936	3
45 C (113 F): Days	1	1	1940	1
90 F (32.2 C): Days	103	76	1931	65
100 F (37.8 C): Days	84	36	1936	7
110 F (43.3 C): Days	6	4	1936	2
0 C (32 F): Ice days (max	103	67	1978	9
0 C (32 F): Frost days (min	108	192	1917	107
-10 C (14 F): Days with min	108	93	1978	27
-20 C (-4 F): Days with min	108	36	1916	10
-30 C (-22 F): Days with min	50	7	1924	1
-40 C (-40 F): Days with min	1	1	2021	1
20 C (68 F): Tropical nights (min	102	23	1936	19
25 C (77 F): Days with min	7	3	1934	1
10 mm (0.39 in): Days with 10 mm or more rain	108	35	2009	22
25 mm (0.98 in): Days with 25 mm or more rain	105	13	2014	10
50 mm (1.97 in): Days with 50 mm or more rain	54	5	2021	5
100 mm (3.94 in): Days with 100 mm or more rain	6	3	2021	3
10 cm (3.9 in): Days with 10 cm or more snowfall	69	8	1919	1
25 cm (9.8 in): Days with 25 cm or more snowfall	14	2	1919	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.

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Data for Purdum 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 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Purdum Threshold Days by Year (USC00256970)

Key Facts for Purdum Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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