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Built 2026-10-19 (19 October 2026)

St Albans Threshold Days by Year (ASN00087058)

4 fixed thresholds counted per year at St Albans (ASN00087058): 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 40 years, most in 1941 with 27.
  • St Albans: days with 25 mm (0.98 in) or more of precipitation in 31 years, most in 1934 with 7.
  • St Albans: days with 50 mm (1.97 in) or more of precipitation in 11 years, most in 1916 with 2.
  • St Albans: days with 100 mm (3.94 in) or more of precipitation in 2 years, most in 1919 with 1.
  • 4 fixed thresholds have at least one qualifying day at St Albans.
40 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at St Albans Days per year at St Albans with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 27 in 1941. 01020301907: 91908: 51909: 101910: 121911: 231912: 91913: 81914: 91915: 81916: 191917: 121918: 141919: 91920: 81921: 141922: 131923: 61924: 161925: 61926: 71927: 31928: 131929: 81930: 121931: 121932: 201933: 81934: 191935: 161936: 111937: 151938: 121939: 201940: 131941: 271942: 161943: 101944: 91945: 121946: 151907191119151919192319271931193519391943
Days per year at St Albans with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 27 in 1941.
Days with 10 mm (0.39 in) or more of precipitation per year at St Albans
YearDaysDecade average
190798
190858
1909108
19101212.3
19112312.3
1912912.3
1913812.3
1914912.3
1915812.3
19161912.3
19171212.3
19181412.3
1919912.3
192089.4
1921149.4
1922139.4
192369.4
1924169.4
192569.4
192679.4
192739.4
1928139.4
192989.4
19301214.5
19311214.5
19322014.5
1933814.5
19341914.5
19351614.5
19361114.5
19371514.5
19381214.5
19392014.5
19401314.6
19412714.6
19421614.6
19431014.6
1944914.6
19451214.6
19461514.6
First to last qualifying date each year at St Albans For each year, a bar from the first to the last day at St Albans meeting 10 mm (0.39 in). 1907: 7 February 1907 to 28 December 19071908: 10 January 1908 to 27 November 19081909: 5 January 1909 to 23 December 19091910: 6 March 1910 to 10 December 19101911: 7 February 1911 to 13 December 19111912: 8 February 1912 to 6 December 19121913: 15 February 1913 to 23 December 19131914: 26 January 1914 to 26 December 19141915: 7 January 1915 to 23 October 19151916: 6 January 1916 to 14 December 19161917: 22 February 1917 to 31 December 19171918: 14 January 1918 to 26 December 19181919: 7 January 1919 to 28 December 19191920: 15 March 1920 to 16 November 19201921: 2 January 1921 to 4 December 19211922: 8 January 1922 to 9 December 19221923: 4 June 1923 to 18 November 19231924: 3 January 1924 to 26 December 19241925: 13 January 1925 to 20 November 19251926: 8 January 1926 to 2 November 19261927: 18 March 1927 to 4 November 19271928: 18 January 1928 to 29 October 19281929: 30 January 1929 to 18 December 19291930: 10 May 1930 to 19 December 19301931: 18 March 1931 to 16 November 19311932: 6 February 1932 to 13 October 19321933: 14 May 1933 to 14 December 19331934: 19 February 1934 to 29 December 19341935: 3 January 1935 to 25 December 19351936: 7 April 1936 to 17 December 19361937: 3 January 1937 to 4 December 19371938: 5 January 1938 to 3 November 19381939: 17 February 1939 to 27 November 19391940: 6 January 1940 to 29 December 19401941: 2 January 1941 to 6 December 19411942: 22 January 1942 to 19 December 19421943: 13 January 1943 to 18 November 19431944: 13 March 1944 to 18 October 19441945: 20 February 1945 to 11 November 19451946: 17 January 1946 to 28 December 194619071912191719221927193219371942JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at St Albans meeting 10 mm (0.39 in).
First to last qualifying date each year at St Albans
YearFirst dateLast date
19071907-02-071907-12-28
19081908-01-101908-11-27
19091909-01-051909-12-23
19101910-03-061910-12-10
19111911-02-071911-12-13
19121912-02-081912-12-06
19131913-02-151913-12-23
19141914-01-261914-12-26
19151915-01-071915-10-23
19161916-01-061916-12-14
19171917-02-221917-12-31
19181918-01-141918-12-26
19191919-01-071919-12-28
19201920-03-151920-11-16
19211921-01-021921-12-04
19221922-01-081922-12-09
19231923-06-041923-11-18
19241924-01-031924-12-26
19251925-01-131925-11-20
19261926-01-081926-11-02
19271927-03-181927-11-04
19281928-01-181928-10-29
19291929-01-301929-12-18
19301930-05-101930-12-19
19311931-03-181931-11-16
19321932-02-061932-10-13
19331933-05-141933-12-14
19341934-02-191934-12-29
19351935-01-031935-12-25
19361936-04-071936-12-17
19371937-01-031937-12-04
19381938-01-051938-11-03
19391939-02-171939-11-27
19401940-01-061940-12-29
19411941-01-021941-12-06
19421942-01-221942-12-19
19431943-01-131943-11-18
19441944-03-131944-10-18
19451945-02-201945-11-11
19461946-01-171946-12-28

Every Fixed Threshold

Fixed thresholds at St Albans
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain4027194115
25 mm (0.98 in): Days with 25 mm or more rain31719344
50 mm (1.97 in): Days with 50 mm or more rain11219161
100 mm (3.94 in): Days with 100 mm or more rain2119191

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1907.

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 . Last revised (2025-12-31).