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Data as of 2025-12-31
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Built 2026-10-17 (17 October 2026)

Rothlyn Threshold Days by Year

4 fixed thresholds counted per year at Rothlyn (ASN00070075): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Rothlyn Thresholds

  • Rothlyn: days with 10 mm (0.39 in) or more of precipitation in 26 years, most in 1959 with 29.
  • Rothlyn: days with 25 mm (0.98 in) or more of precipitation in 25 years, most in 1961 with 11.
  • Rothlyn: days with 50 mm (1.97 in) or more of precipitation in 9 years, most in 1943 with 1.
  • Rothlyn: days with 100 mm (3.94 in) or more of precipitation in 2 years, most in 1945 with 1.
  • 4 fixed thresholds have at least one qualifying day at Rothlyn.
26 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Rothlyn Days per year at Rothlyn with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 29 in 1959. 01020301926: 121927: 81928: 131936: 191937: 161938: 81939: 141940: 101941: 151942: 171943: 151944: 111945: 141946: 161947: 131952: 261953: 101957: 121958: 171959: 291960: 251961: 251962: 151963: 211964: 201965: 9192619361939194219451952195819611964
Days per year at Rothlyn with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 29 in 1959.
Days with 10 mm (0.39 in) or more of precipitation per year at Rothlyn
YearDaysDecade average
19261211
1927811
19281311
19361914.3
19371614.3
1938814.3
19391414.3
19401013.9
19411513.9
19421713.9
19431513.9
19441113.9
19451413.9
19461613.9
19471313.9
19522618.8
19531018.8
19571218.8
19581718.8
19592918.8
19602519.2
19612519.2
19621519.2
19632119.2
19642019.2
1965919.2
First to last qualifying date each year at Rothlyn For each year, a bar from the first to the last day at Rothlyn meeting 10 mm (0.39 in). 1926: 5 January 1926 to 22 December 19261927: 6 January 1927 to 4 November 19271928: 19 January 1928 to 15 October 19281936: 5 January 1936 to 20 December 19361937: 13 January 1937 to 28 December 19371938: 3 January 1938 to 28 November 19381939: 17 January 1939 to 5 November 19391940: 7 January 1940 to 25 November 19401941: 2 January 1941 to 28 December 19411942: 20 February 1942 to 22 December 19421943: 3 January 1943 to 18 December 19431944: 15 January 1944 to 13 December 19441945: 11 January 1945 to 18 November 19451946: 16 January 1946 to 28 December 19461947: 6 February 1947 to 25 December 19471952: 27 January 1952 to 31 December 19521953: 9 May 1953 to 31 December 19531957: 23 January 1957 to 31 December 19571958: 28 January 1958 to 30 December 19581959: 1 January 1959 to 8 December 19591960: 5 January 1960 to 23 December 19601961: 3 January 1961 to 18 December 19611962: 12 January 1962 to 25 December 19621963: 16 January 1963 to 14 December 19631964: 3 February 1964 to 23 December 19641965: 23 June 1965 to 25 November 19651926193719411945195319601964JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Rothlyn meeting 10 mm (0.39 in).
First to last qualifying date each year at Rothlyn
YearFirst dateLast date
19261926-01-051926-12-22
19271927-01-061927-11-04
19281928-01-191928-10-15
19361936-01-051936-12-20
19371937-01-131937-12-28
19381938-01-031938-11-28
19391939-01-171939-11-05
19401940-01-071940-11-25
19411941-01-021941-12-28
19421942-02-201942-12-22
19431943-01-031943-12-18
19441944-01-151944-12-13
19451945-01-111945-11-18
19461946-01-161946-12-28
19471947-02-061947-12-25
19521952-01-271952-12-31
19531953-05-091953-12-31
19571957-01-231957-12-31
19581958-01-281958-12-30
19591959-01-011959-12-08
19601960-01-051960-12-23
19611961-01-031961-12-18
19621962-01-121962-12-25
19631963-01-161963-12-14
19641964-02-031964-12-23
19651965-06-231965-11-25

Every Fixed Threshold

Fixed thresholds at Rothlyn
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain262919599
25 mm (0.98 in): Days with 25 mm or more rain251119613
50 mm (1.97 in): Days with 50 mm or more rain9119431
100 mm (3.94 in): Days with 100 mm or more rain2119451

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1926.

Download the Data

  • Data for Rothlyn 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 2026-10-15 (15 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2025-12-31).