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Built 2026-10-18 (18 October 2026)

Cythera Threshold Days by Year

4 fixed thresholds counted per year at Cythera (ASN00044028): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Cythera Thresholds

  • Cythera: days with 10 mm (0.39 in) or more of precipitation in 60 years, most in 1950 with 32.
  • Cythera: days with 25 mm (0.98 in) or more of precipitation in 57 years, most in 1950 with 13.
  • Cythera: days with 50 mm (1.97 in) or more of precipitation in 34 years, most in 1950 with 5.
  • Cythera: days with 100 mm (3.94 in) or more of precipitation in 2 years, most in 1975 with 1.
  • 4 fixed thresholds have at least one qualifying day at Cythera.
60 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Cythera Days per year at Cythera with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 32 in 1950. 0102030401917: 201921: 241922: 71923: 81927: 151928: 171929: 111930: 101934: 111935: 91936: 201937: 121938: 71939: 151940: 111941: 171942: 151943: 201944: 91945: 101946: 71947: 201948: 91949: 201950: 321951: 71952: 141953: 181954: 251955: 201956: 211957: 111958: 111961: 171962: 141963: 251964: 191965: 51966: 131967: 121968: 131969: 111970: 161971: 131974: 201975: 231976: 231977: 131978: 251979: 81980: 131981: 121982: 141983: 221984: 171985: 141986: 131987: 141995: 141997: 181917192919381944195019561964197019781984
Days per year at Cythera with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 32 in 1950.
Days with 10 mm (0.39 in) or more of precipitation per year at Cythera
YearDaysDecade average
19172020
19212413.7
1922713.7
1923813.7
19271513.7
19281713.7
19291113.7
19301012
19341112
1935912
19362012
19371212
1938712
19391512
19401113.8
19411713.8
19421513.8
19432013.8
1944913.8
19451013.8
1946713.8
19472013.8
1948913.8
19492013.8
19503217.7
1951717.7
19521417.7
19531817.7
19542517.7
19552017.7
19562117.7
19571117.7
19581117.7
19611714.3
19621414.3
19632514.3
19641914.3
1965514.3
19661314.3
19671214.3
19681314.3
19691114.3
19701617.6
19711317.6
19742017.6
19752317.6
19762317.6
19771317.6
19782517.6
1979817.6
19801314.9
19811214.9
19821414.9
19832214.9
19841714.9
19851414.9
19861314.9
19871414.9
19951416
19971816
First to last qualifying date each year at Cythera For each year, a bar from the first to the last day at Cythera meeting 10 mm (0.39 in). 1917: 20 January 1917 to 11 December 19171921: 3 February 1921 to 24 December 19211922: 22 June 1922 to 19 December 19221923: 2 March 1923 to 27 December 19231927: 4 January 1927 to 22 December 19271928: 17 January 1928 to 26 December 19281929: 5 February 1929 to 31 December 19291930: 7 January 1930 to 7 November 19301934: 30 January 1934 to 27 November 19341935: 30 June 1935 to 29 December 19351936: 6 January 1936 to 26 December 19361937: 11 January 1937 to 5 December 19371938: 23 January 1938 to 5 November 19381939: 24 January 1939 to 11 December 19391940: 30 January 1940 to 12 December 19401941: 2 January 1941 to 24 December 19411942: 9 January 1942 to 31 December 19421943: 1 January 1943 to 18 December 19431944: 25 January 1944 to 21 August 19441945: 24 February 1945 to 18 December 19451946: 5 January 1946 to 19 September 19461947: 30 January 1947 to 2 December 19471948: 1 January 1948 to 30 December 19481949: 8 January 1949 to 2 December 19491950: 17 January 1950 to 31 December 19501951: 9 January 1951 to 6 October 19511952: 5 January 1952 to 29 October 19521953: 6 January 1953 to 31 December 19531954: 1 January 1954 to 12 December 19541955: 8 January 1955 to 18 December 19551956: 19 January 1956 to 14 December 19561957: 9 January 1957 to 31 December 19571958: 28 January 1958 to 25 December 19581961: 3 January 1961 to 17 December 19611962: 2 January 1962 to 20 October 19621963: 2 January 1963 to 29 December 19631964: 14 January 1964 to 28 December 19641965: 19 July 1965 to 15 December 19651966: 22 January 1966 to 24 September 19661967: 18 January 1967 to 29 December 19671968: 5 January 1968 to 24 December 19681969: 9 January 1969 to 22 December 19691970: 11 January 1970 to 26 December 19701971: 18 January 1971 to 28 December 19711974: 6 January 1974 to 29 December 19741975: 3 January 1975 to 27 December 19751976: 14 January 1976 to 23 December 19761977: 22 January 1977 to 22 November 19771978: 14 January 1978 to 4 December 19781979: 20 January 1979 to 11 November 19791980: 5 February 1980 to 6 December 19801981: 18 January 1981 to 19 November 19811982: 8 January 1982 to 3 December 19821983: 20 February 1983 to 29 December 19831984: 1 January 1984 to 19 December 19841985: 20 January 1985 to 8 December 19851986: 4 February 1986 to 30 November 19861987: 1 January 1987 to 18 November 19871995: 19 January 1995 to 21 November 19951997: 13 January 1997 to 10 December 199719171934194219501958196819781986JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Cythera meeting 10 mm (0.39 in).
First to last qualifying date each year at Cythera
YearFirst dateLast date
19171917-01-201917-12-11
19211921-02-031921-12-24
19221922-06-221922-12-19
19231923-03-021923-12-27
19271927-01-041927-12-22
19281928-01-171928-12-26
19291929-02-051929-12-31
19301930-01-071930-11-07
19341934-01-301934-11-27
19351935-06-301935-12-29
19361936-01-061936-12-26
19371937-01-111937-12-05
19381938-01-231938-11-05
19391939-01-241939-12-11
19401940-01-301940-12-12
19411941-01-021941-12-24
19421942-01-091942-12-31
19431943-01-011943-12-18
19441944-01-251944-08-21
19451945-02-241945-12-18
19461946-01-051946-09-19
19471947-01-301947-12-02
19481948-01-011948-12-30
19491949-01-081949-12-02
19501950-01-171950-12-31
19511951-01-091951-10-06
19521952-01-051952-10-29
19531953-01-061953-12-31
19541954-01-011954-12-12
19551955-01-081955-12-18
19561956-01-191956-12-14
19571957-01-091957-12-31
19581958-01-281958-12-25
19611961-01-031961-12-17
19621962-01-021962-10-20
19631963-01-021963-12-29
19641964-01-141964-12-28
19651965-07-191965-12-15
19661966-01-221966-09-24
19671967-01-181967-12-29
19681968-01-051968-12-24
19691969-01-091969-12-22
19701970-01-111970-12-26
19711971-01-181971-12-28
19741974-01-061974-12-29
19751975-01-031975-12-27
19761976-01-141976-12-23
19771977-01-221977-11-22
19781978-01-141978-12-04
19791979-01-201979-11-11
19801980-02-051980-12-06
19811981-01-181981-11-19
19821982-01-081982-12-03
19831983-02-201983-12-29
19841984-01-011984-12-19
19851985-01-201985-12-08
19861986-02-041986-11-30
19871987-01-011987-11-18
19951995-01-191995-11-21
19971997-01-131997-12-10

Every Fixed Threshold

Fixed thresholds at Cythera
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain6032195018
25 mm (0.98 in): Days with 25 mm or more rain571319508
50 mm (1.97 in): Days with 50 mm or more rain34519502
100 mm (3.94 in): Days with 100 mm or more rain2119751

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1917.

Download the Data

  • Data for Cythera 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).