St Albans Threshold Days by Year (CA005012540)

18 fixed thresholds counted per year at St Albans (CA005012540): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for St Albans Thresholds

St Albans: days with 10 mm (0.39 in) or more of precipitation in 75 years, most in 1942 with 20.
St Albans: nights with a minimum temperature at or below 0 C (32 F) in 74 years, most in 1917 with 237.
St Albans: nights with a minimum temperature at or below -10 C (14 F) in 74 years, most in 1893 with 145.
St Albans: nights with a minimum temperature at or below -20 C (-4 F) in 74 years, most in 1893 with 100.
18 fixed thresholds have at least one qualifying day at St Albans.

Days at or above 30 C (86 F)

73 years with a qualifying day

Days per year at St Albans with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 55 in 1936.

Days at or above 30 C (86 F) per year at St Albans
Year	Days	Decade average
1886	51	34.3
1887	26	34.3
1888	24	34.3
1889	36	34.3
1890	31	29.7
1891	23	29.7
1892	27	29.7
1893	43	29.7
1894	45	29.7
1895	12	29.7
1897	34	29.7
1898	28	29.7
1899	24	29.7
1900	35	29.6
1901	39	29.6
1902	26	29.6
1903	18	29.6
1904	17	29.6
1905	22	29.6
1906	46	29.6
1907	20	29.6
1908	28	29.6
1909	45	29.6
1910	44	30.8
1911	22	30.8
1912	19	30.8
1913	31	30.8
1914	47	30.8
1915	33	30.8
1916	26	30.8
1917	33	30.8
1918	17	30.8
1919	36	30.8
1920	32	27.6
1921	41	27.6
1922	35	27.6
1923	27	27.6
1924	12	27.6
1925	26	27.6
1926	26	27.6
1927	21	27.6
1928	20	27.6
1929	36	27.6
1930	37	39.6
1931	39	39.6
1932	34	39.6
1933	44	39.6
1934	47	39.6
1935	19	39.6
1936	55	39.6
1937	37	39.6
1938	43	39.6
1939	41	39.6
1940	20	28.7
1941	40	28.7
1942	20	28.7
1943	36	28.7
1944	20	28.7
1945	22	28.7
1946	33	28.7
1947	29	28.7
1948	23	28.7
1949	44	28.7
1950	13	21
1951	19	21
1952	25	21
1953	27	21
1954	14	21
1955	33	21
1956	15	21
1957	15	21
1958	22	21
1959	27	21

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

First to last qualifying date each year at St Albans
Year	First date	Last date
1886	1886-05-19	1886-10-05
1887	1887-04-30	1887-09-30
1888	1888-06-13	1888-09-22
1889	1889-06-05	1889-09-01
1890	1890-06-08	1890-09-30
1891	1891-04-24	1891-09-19
1892	1892-06-18	1892-09-29
1893	1893-05-18	1893-09-12
1894	1894-05-28	1894-09-05
1895	1895-07-01	1895-09-02
1897	1897-05-04	1897-09-28
1898	1898-05-23	1898-09-27
1899	1899-06-18	1899-09-09
1900	1900-05-11	1900-08-19
1901	1901-04-30	1901-09-03
1902	1902-05-19	1902-09-07
1903	1903-05-14	1903-08-31
1904	1904-05-19	1904-08-26
1905	1905-06-02	1905-09-29
1906	1906-04-17	1906-09-24
1907	1907-06-14	1907-08-22
1908	1908-06-04	1908-09-20
1909	1909-06-02	1909-10-06
1910	1910-05-27	1910-10-09
1911	1911-05-05	1911-08-20
1912	1912-05-26	1912-08-11
1913	1913-05-26	1913-09-09
1914	1914-05-27	1914-10-03
1915	1915-04-17	1915-09-05
1916	1916-07-02	1916-08-28
1917	1917-05-15	1917-09-24
1918	1918-05-04	1918-08-09
1919	1919-05-23	1919-08-22
1920	1920-06-07	1920-10-07
1921	1921-06-14	1921-09-01
1922	1922-06-03	1922-10-01
1923	1923-05-25	1923-09-21
1924	1924-07-03	1924-09-02
1925	1925-05-19	1925-09-16
1926	1926-04-29	1926-08-27
1927	1927-06-18	1927-09-13
1928	1928-05-21	1928-09-18
1929	1929-05-25	1929-09-01
1930	1930-05-03	1930-09-10
1931	1931-05-13	1931-09-07
1932	1932-05-13	1932-09-08
1933	1933-05-15	1933-08-22
1934	1934-05-05	1934-10-13
1935	1935-06-29	1935-09-16
1936	1936-05-25	1936-10-08
1937	1937-05-06	1937-09-02
1938	1938-06-02	1938-10-09
1939	1939-04-30	1939-09-18
1940	1940-05-11	1940-09-18
1941	1941-05-04	1941-09-19
1942	1942-05-24	1942-09-09
1943	1943-05-22	1943-10-05
1944	1944-05-15	1944-08-08
1945	1945-06-21	1945-09-05
1946	1946-05-25	1946-09-16
1947	1947-04-28	1947-09-12
1948	1948-05-19	1948-09-29
1949	1949-04-28	1949-09-10
1950	1950-06-04	1950-09-25
1951	1951-05-23	1951-08-04
1952	1952-04-26	1952-09-27
1953	1953-05-06	1953-08-31
1954	1954-06-23	1954-08-31
1955	1955-05-19	1955-09-05
1956	1956-05-21	1956-09-26
1957	1957-05-29	1957-08-19
1958	1958-05-12	1958-08-18
1959	1959-05-17	1959-08-27

Every Fixed Threshold

Fixed thresholds at St Albans
Threshold	Years with a qualifying day	Most days in a year	Year	Latest year days
30 C (86 F): Days	73	55	1936	27
35 C (95 F): Days	70	27	1936	4
40 C (104 F): Days	18	9	1936	1
90 F (32.2 C): Days	73	44	1936	12
100 F (37.8 C): Days	42	16	1936	1
110 F (43.3 C): Days	1	1	1936	1
0 C (32 F): Ice days (max	73	142	1893	114
0 C (32 F): Frost days (min	74	237	1917	212
-10 C (14 F): Days with min	74	145	1893	104
-20 C (-4 F): Days with min	74	100	1893	55
-30 C (-22 F): Days with min	73	48	1887	16
-40 C (-40 F): Days with min	36	6	1936	1
20 C (68 F): Tropical nights (min	45	7	1936	1
10 mm (0.39 in): Days with 10 mm or more rain	75	20	1942	19
25 mm (0.98 in): Days with 25 mm or more rain	72	7	1924	1
50 mm (1.97 in): Days with 50 mm or more rain	21	3	1926	1
10 cm (3.9 in): Days with 10 cm or more snowfall	62	8	1942	5
25 cm (9.8 in): Days with 25 cm or more snowfall	11	2	1924	1

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1886.

Download the Data

Data for St Albans 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).

St Albans Threshold Days by Year (CA005012540)

Key Facts for St Albans Thresholds

Days at or above 30 C (86 F)

Every Fixed Threshold

Download the Data

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