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

Ashton Threshold Days by Year (USC00390346)

6 fixed thresholds counted per year at Ashton (USC00390346): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Ashton Thresholds

  • Ashton: days with 10 mm (0.39 in) or more of precipitation in 30 years, most in 1944 with 21.
  • Ashton: days with 25 mm (0.98 in) or more of precipitation in 29 years, most in 1957 with 9.
  • Ashton: days with 50 mm (1.97 in) or more of precipitation in 14 years, most in 1966 with 3.
  • Ashton: days with 10 cm (3.9 in) or more of snowfall in 12 years, most in 1940 with 4.
  • 6 fixed thresholds have at least one qualifying day at Ashton.
30 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Ashton Days per year at Ashton with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 21 in 1944. 01020301929: 141930: 151931: 141932: 111933: 101934: 121935: 191936: 61937: 141939: 101940: 101941: 201942: 121943: 181944: 211952: 101953: 161954: 81955: 111956: 151957: 211958: 131959: 111960: 201961: 131962: 171963: 151964: 111965: 151966: 171929193219351939194219521955195819611964
Days per year at Ashton with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 21 in 1944.
Days with 10 mm (0.39 in) or more of precipitation per year at Ashton
YearDaysDecade average
19291414
19301512.3
19311412.3
19321112.3
19331012.3
19341212.3
19351912.3
1936612.3
19371412.3
19391012.3
19401016.2
19412016.2
19421216.2
19431816.2
19442116.2
19521013.1
19531613.1
1954813.1
19551113.1
19561513.1
19572113.1
19581313.1
19591113.1
19602015.4
19611315.4
19621715.4
19631515.4
19641115.4
19651515.4
19661715.4
First to last qualifying date each year at Ashton For each year, a bar from the first to the last day at Ashton meeting 10 mm (0.39 in). 1929: 30 January 1929 to 31 October 19291930: 28 February 1930 to 20 November 19301931: 23 March 1931 to 31 December 19311932: 24 April 1932 to 26 September 19321933: 5 March 1933 to 2 December 19331934: 29 March 1934 to 25 November 19341935: 14 February 1935 to 29 August 19351936: 30 April 1936 to 1 November 19361937: 2 January 1937 to 9 September 19371939: 9 January 1939 to 9 October 19391940: 11 February 1940 to 28 December 19401941: 16 January 1941 to 2 October 19411942: 25 March 1942 to 17 September 19421943: 2 January 1943 to 5 November 19431944: 27 January 1944 to 25 November 19441952: 14 January 1952 to 17 November 19521953: 10 February 1953 to 21 October 19531954: 29 April 1954 to 26 October 19541955: 23 May 1955 to 22 September 19551956: 3 April 1956 to 2 November 19561957: 4 April 1957 to 1 November 19571958: 27 February 1958 to 18 November 19581959: 20 May 1959 to 8 October 19591960: 1 January 1960 to 5 December 19601961: 1 February 1961 to 11 October 19611962: 24 March 1962 to 16 September 19621963: 19 April 1963 to 22 November 19631964: 5 April 1964 to 22 September 19641965: 28 March 1965 to 11 December 19651966: 9 February 1966 to 14 October 196619291933193719421953195719611965JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Ashton meeting 10 mm (0.39 in).
First to last qualifying date each year at Ashton
YearFirst dateLast date
19291929-01-301929-10-31
19301930-02-281930-11-20
19311931-03-231931-12-31
19321932-04-241932-09-26
19331933-03-051933-12-02
19341934-03-291934-11-25
19351935-02-141935-08-29
19361936-04-301936-11-01
19371937-01-021937-09-09
19391939-01-091939-10-09
19401940-02-111940-12-28
19411941-01-161941-10-02
19421942-03-251942-09-17
19431943-01-021943-11-05
19441944-01-271944-11-25
19521952-01-141952-11-17
19531953-02-101953-10-21
19541954-04-291954-10-26
19551955-05-231955-09-22
19561956-04-031956-11-02
19571957-04-041957-11-01
19581958-02-271958-11-18
19591959-05-201959-10-08
19601960-01-011960-12-05
19611961-02-011961-10-11
19621962-03-241962-09-16
19631963-04-191963-11-22
19641964-04-051964-09-22
19651965-03-281965-12-11
19661966-02-091966-10-14

Every Fixed Threshold

Fixed thresholds at Ashton
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain3021194417
25 mm (0.98 in): Days with 25 mm or more rain29919576
50 mm (1.97 in): Days with 50 mm or more rain14319663
100 mm (3.94 in): Days with 100 mm or more rain1119661
10 cm (3.9 in): Days with 10 cm or more snowfall12419403
25 cm (9.8 in): Days with 25 cm or more snowfall1119361

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1929.

Download the Data

  • Data for Ashton 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).