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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Chepstowe Threshold Days by Year (ASN00089046)

3 fixed thresholds counted per year at Chepstowe (ASN00089046): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Chepstowe Thresholds

  • Chepstowe: days with 10 mm (0.39 in) or more of precipitation in 50 years, most in 1889 with 25.
  • Chepstowe: days with 25 mm (0.98 in) or more of precipitation in 44 years, most in 1946 with 7.
  • Chepstowe: days with 50 mm (1.97 in) or more of precipitation in 6 years, most in 1904 with 1.
  • 3 fixed thresholds have at least one qualifying day at Chepstowe.
50 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Chepstowe Days per year at Chepstowe with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 25 in 1889. 01020301888: 141889: 251890: 181891: 141892: 141893: 221894: 241895: 141896: 141897: 91898: 101899: 151900: 161901: 191902: 141903: 231904: 201905: 141906: 181907: 131908: 161909: 151910: 181911: 241912: 111913: 81914: 101915: 91916: 191917: 201918: 151919: 101932: 191933: 161934: 191935: 141936: 141937: 131938: 91939: 211940: 101941: 201942: 171943: 71944: 81945: 81946: 191947: 161948: 111949: 111888189318981903190819131918193519401945
Days per year at Chepstowe with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 25 in 1889.
Days with 10 mm (0.39 in) or more of precipitation per year at Chepstowe
YearDaysDecade average
18881419.5
18892519.5
18901815.4
18911415.4
18921415.4
18932215.4
18942415.4
18951415.4
18961415.4
1897915.4
18981015.4
18991515.4
19001616.8
19011916.8
19021416.8
19032316.8
19042016.8
19051416.8
19061816.8
19071316.8
19081616.8
19091516.8
19101814.4
19112414.4
19121114.4
1913814.4
19141014.4
1915914.4
19161914.4
19172014.4
19181514.4
19191014.4
19321915.6
19331615.6
19341915.6
19351415.6
19361415.6
19371315.6
1938915.6
19392115.6
19401012.7
19412012.7
19421712.7
1943712.7
1944812.7
1945812.7
19461912.7
19471612.7
19481112.7
19491112.7
First to last qualifying date each year at Chepstowe For each year, a bar from the first to the last day at Chepstowe meeting 10 mm (0.39 in). 1888: 13 January 1888 to 4 October 18881889: 2 January 1889 to 21 December 18891890: 10 January 1890 to 7 December 18901891: 12 April 1891 to 16 December 18911892: 22 March 1892 to 11 December 18921893: 31 March 1893 to 20 November 18931894: 14 January 1894 to 24 December 18941895: 4 January 1895 to 10 December 18951896: 25 January 1896 to 27 November 18961897: 9 January 1897 to 2 November 18971898: 13 February 1898 to 23 December 18981899: 26 February 1899 to 19 November 18991900: 2 March 1900 to 27 September 19001901: 4 January 1901 to 15 November 19011902: 1 January 1902 to 20 December 19021903: 7 January 1903 to 29 December 19031904: 3 January 1904 to 2 November 19041905: 3 January 1905 to 10 December 19051906: 10 March 1906 to 28 November 19061907: 26 January 1907 to 29 December 19071908: 10 January 1908 to 27 November 19081909: 4 January 1909 to 1 December 19091910: 2 February 1910 to 20 November 19101911: 7 February 1911 to 13 December 19111912: 29 March 1912 to 6 December 19121913: 15 February 1913 to 23 December 19131914: 12 January 1914 to 25 December 19141915: 20 January 1915 to 23 November 19151916: 4 January 1916 to 9 December 19161917: 22 January 1917 to 31 December 19171918: 6 March 1918 to 3 September 19181919: 17 February 1919 to 27 December 19191932: 5 February 1932 to 24 December 19321933: 23 January 1933 to 15 December 19331934: 9 January 1934 to 29 December 19341935: 5 January 1935 to 23 October 19351936: 15 March 1936 to 29 December 19361937: 2 January 1937 to 4 December 19371938: 15 January 1938 to 4 November 19381939: 26 February 1939 to 16 November 19391940: 6 January 1940 to 20 December 19401941: 16 January 1941 to 19 November 19411942: 20 January 1942 to 19 December 19421943: 22 January 1943 to 26 October 19431944: 23 January 1944 to 6 December 19441945: 25 February 1945 to 20 November 19451946: 17 January 1946 to 28 December 19461947: 4 February 1947 to 23 December 19471948: 5 January 1948 to 11 October 19481949: 20 February 1949 to 20 December 194918881895190219091916193519421949JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Chepstowe meeting 10 mm (0.39 in).
First to last qualifying date each year at Chepstowe
YearFirst dateLast date
18881888-01-131888-10-04
18891889-01-021889-12-21
18901890-01-101890-12-07
18911891-04-121891-12-16
18921892-03-221892-12-11
18931893-03-311893-11-20
18941894-01-141894-12-24
18951895-01-041895-12-10
18961896-01-251896-11-27
18971897-01-091897-11-02
18981898-02-131898-12-23
18991899-02-261899-11-19
19001900-03-021900-09-27
19011901-01-041901-11-15
19021902-01-011902-12-20
19031903-01-071903-12-29
19041904-01-031904-11-02
19051905-01-031905-12-10
19061906-03-101906-11-28
19071907-01-261907-12-29
19081908-01-101908-11-27
19091909-01-041909-12-01
19101910-02-021910-11-20
19111911-02-071911-12-13
19121912-03-291912-12-06
19131913-02-151913-12-23
19141914-01-121914-12-25
19151915-01-201915-11-23
19161916-01-041916-12-09
19171917-01-221917-12-31
19181918-03-061918-09-03
19191919-02-171919-12-27
19321932-02-051932-12-24
19331933-01-231933-12-15
19341934-01-091934-12-29
19351935-01-051935-10-23
19361936-03-151936-12-29
19371937-01-021937-12-04
19381938-01-151938-11-04
19391939-02-261939-11-16
19401940-01-061940-12-20
19411941-01-161941-11-19
19421942-01-201942-12-19
19431943-01-221943-10-26
19441944-01-231944-12-06
19451945-02-251945-11-20
19461946-01-171946-12-28
19471947-02-041947-12-23
19481948-01-051948-10-11
19491949-02-201949-12-20

Every Fixed Threshold

Fixed thresholds at Chepstowe
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain5025188911
25 mm (0.98 in): Days with 25 mm or more rain44719461
50 mm (1.97 in): Days with 50 mm or more rain6119041

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1888.

Download the Data

  • Data for Chepstowe 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).