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Built 2026-10-17 (17 October 2026)

Llangollen Threshold Days by Year

4 fixed thresholds counted per year at Llangollen (ASN00062082): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Llangollen Thresholds

  • Llangollen: days with 10 mm (0.39 in) or more of precipitation in 44 years, most in 1887 with 33.
  • Llangollen: days with 25 mm (0.98 in) or more of precipitation in 43 years, most in 1887 with 11.
  • Llangollen: days with 50 mm (1.97 in) or more of precipitation in 22 years, most in 1898 with 5.
  • Llangollen: days with 100 mm (3.94 in) or more of precipitation in 3 years, most in 1889 with 1.
  • 4 fixed thresholds have at least one qualifying day at Llangollen.
44 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Llangollen Days per year at Llangollen with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 33 in 1887. 0102030401880: 211881: 211882: 211883: 141884: 141885: 121886: 281887: 331888: 81889: 261890: 291891: 291892: 271893: 261894: 271895: 191896: 181897: 181898: 151899: 151900: 171901: 141902: 161903: 161904: 211905: 111906: 171907: 151908: 191909: 281910: 201911: 221912: 111913: 201914: 181915: 61916: 231917: 191918: 121919: 111920: 291921: 311922: 81923: 11188018851890189519001905191019151920
Days per year at Llangollen with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 33 in 1887.
Days with 10 mm (0.39 in) or more of precipitation per year at Llangollen
YearDaysDecade average
18802119.8
18812119.8
18822119.8
18831419.8
18841419.8
18851219.8
18862819.8
18873319.8
1888819.8
18892619.8
18902922.3
18912922.3
18922722.3
18932622.3
18942722.3
18951922.3
18961822.3
18971822.3
18981522.3
18991522.3
19001717.4
19011417.4
19021617.4
19031617.4
19042117.4
19051117.4
19061717.4
19071517.4
19081917.4
19092817.4
19102016.2
19112216.2
19121116.2
19132016.2
19141816.2
1915616.2
19162316.2
19171916.2
19181216.2
19191116.2
19202919.8
19213119.8
1922819.8
19231119.8
First to last qualifying date each year at Llangollen For each year, a bar from the first to the last day at Llangollen meeting 10 mm (0.39 in). 1880: 9 January 1880 to 9 December 18801881: 13 January 1881 to 10 December 18811882: 6 February 1882 to 24 December 18821883: 14 January 1883 to 28 November 18831884: 19 April 1884 to 15 December 18841885: 12 January 1885 to 25 December 18851886: 17 January 1886 to 9 December 18861887: 3 January 1887 to 26 December 18871888: 8 January 1888 to 1 December 18881889: 4 January 1889 to 20 December 18891890: 13 January 1890 to 30 December 18901891: 11 January 1891 to 4 December 18911892: 1 January 1892 to 31 December 18921893: 22 January 1893 to 27 December 18931894: 6 January 1894 to 29 December 18941895: 5 January 1895 to 28 December 18951896: 26 January 1896 to 16 December 18961897: 10 January 1897 to 21 December 18971898: 13 January 1898 to 27 October 18981899: 19 January 1899 to 27 October 18991900: 6 January 1900 to 5 December 19001901: 2 January 1901 to 18 November 19011902: 10 January 1902 to 18 December 19021903: 1 March 1903 to 12 December 19031904: 3 January 1904 to 19 December 19041905: 20 February 1905 to 27 August 19051906: 1 January 1906 to 25 December 19061907: 27 January 1907 to 28 December 19071908: 26 January 1908 to 27 November 19081909: 21 January 1909 to 25 December 19091910: 11 January 1910 to 18 December 19101911: 6 January 1911 to 5 December 19111912: 1 January 1912 to 23 October 19121913: 12 January 1913 to 13 November 19131914: 20 January 1914 to 27 December 19141915: 27 March 1915 to 31 December 19151916: 16 January 1916 to 13 December 19161917: 23 January 1917 to 29 December 19171918: 11 January 1918 to 31 October 19181919: 4 January 1919 to 29 December 19191920: 4 January 1920 to 26 December 19201921: 9 January 1921 to 28 December 19211922: 7 January 1922 to 11 December 19221923: 6 January 1923 to 27 December 192318801886189218981904191019161922JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Llangollen meeting 10 mm (0.39 in).
First to last qualifying date each year at Llangollen
YearFirst dateLast date
18801880-01-091880-12-09
18811881-01-131881-12-10
18821882-02-061882-12-24
18831883-01-141883-11-28
18841884-04-191884-12-15
18851885-01-121885-12-25
18861886-01-171886-12-09
18871887-01-031887-12-26
18881888-01-081888-12-01
18891889-01-041889-12-20
18901890-01-131890-12-30
18911891-01-111891-12-04
18921892-01-011892-12-31
18931893-01-221893-12-27
18941894-01-061894-12-29
18951895-01-051895-12-28
18961896-01-261896-12-16
18971897-01-101897-12-21
18981898-01-131898-10-27
18991899-01-191899-10-27
19001900-01-061900-12-05
19011901-01-021901-11-18
19021902-01-101902-12-18
19031903-03-011903-12-12
19041904-01-031904-12-19
19051905-02-201905-08-27
19061906-01-011906-12-25
19071907-01-271907-12-28
19081908-01-261908-11-27
19091909-01-211909-12-25
19101910-01-111910-12-18
19111911-01-061911-12-05
19121912-01-011912-10-23
19131913-01-121913-11-13
19141914-01-201914-12-27
19151915-03-271915-12-31
19161916-01-161916-12-13
19171917-01-231917-12-29
19181918-01-111918-10-31
19191919-01-041919-12-29
19201920-01-041920-12-26
19211921-01-091921-12-28
19221922-01-071922-12-11
19231923-01-061923-12-27

Every Fixed Threshold

Fixed thresholds at Llangollen
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain4433188711
25 mm (0.98 in): Days with 25 mm or more rain431118872
50 mm (1.97 in): Days with 50 mm or more rain22518981
100 mm (3.94 in): Days with 100 mm or more rain3118891

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1880.

Download the Data

  • Data for Llangollen 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 . Last revised (2025-12-31).