Daily records
Page built 2026-10-19
Data as of 2025-12-31
Search
Built 2026-10-19 (19 October 2026)

Groot Constantia Threshold Days by Year (SF000047220)

4 fixed thresholds counted per year at Groot Constantia (SF000047220): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Groot Constantia Thresholds

  • Groot Constantia: days with 10 mm (0.39 in) or more of precipitation in 62 years, most in 1951 with 60.
  • Groot Constantia: days with 25 mm (0.98 in) or more of precipitation in 60 years, most in 1941 with 27.
  • Groot Constantia: days with 50 mm (1.97 in) or more of precipitation in 48 years, most in 1954 with 8.
  • Groot Constantia: days with 100 mm (3.94 in) or more of precipitation in 1 years, most in 1914 with 1.
  • 4 fixed thresholds have at least one qualifying day at Groot Constantia.
62 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Groot Constantia Days per year at Groot Constantia with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 60 in 1951. 02040601910: 331911: 251912: 311913: 381914: 391916: 411925: 121929: 91930: 121931: 181932: 101933: 81934: 61935: 121937: 111938: 121939: 281940: 361941: 551942: 331943: 291944: 291945: 301946: 281947: 321948: 301949: 401950: 361951: 601952: 441953: 431954: 491955: 391956: 461957: 511958: 361959: 411960: 281961: 341962: 481963: 311964: 351965: 471966: 411967: 341968: 351969: 331970: 331971: 281972: 301973: 251974: 381975: 371976: 381977: 521978: 291979: 281980: 281981: 261982: 361987: 371988: 32191019291937194419511958196519721979
Days per year at Groot Constantia with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 60 in 1951.
Days with 10 mm (0.39 in) or more of precipitation per year at Groot Constantia
YearDaysDecade average
19103334.5
19112534.5
19123134.5
19133834.5
19143934.5
19164134.5
19251210.5
1929910.5
19301213
19311813
19321013
1933813
1934613
19351213
19371113
19381213
19392813
19403634.2
19415534.2
19423334.2
19432934.2
19442934.2
19453034.2
19462834.2
19473234.2
19483034.2
19494034.2
19503644.5
19516044.5
19524444.5
19534344.5
19544944.5
19553944.5
19564644.5
19575144.5
19583644.5
19594144.5
19602836.6
19613436.6
19624836.6
19633136.6
19643536.6
19654736.6
19664136.6
19673436.6
19683536.6
19693336.6
19703333.8
19712833.8
19723033.8
19732533.8
19743833.8
19753733.8
19763833.8
19775233.8
19782933.8
19792833.8
19802831.8
19812631.8
19823631.8
19873731.8
19883231.8
First to last qualifying date each year at Groot Constantia For each year, a bar from the first to the last day at Groot Constantia meeting 10 mm (0.39 in). 1910: 27 March 1910 to 10 November 19101911: 1 January 1911 to 30 December 19111912: 8 March 1912 to 25 November 19121913: 8 February 1913 to 26 December 19131914: 3 January 1914 to 21 December 19141916: 18 January 1916 to 10 December 19161925: 12 January 1925 to 1 November 19251929: 13 February 1929 to 29 December 19291930: 1 February 1930 to 13 December 19301931: 15 January 1931 to 31 December 19311932: 6 June 1932 to 8 November 19321933: 7 March 1933 to 28 August 19331934: 24 January 1934 to 20 October 19341935: 5 March 1935 to 15 December 19351937: 22 March 1937 to 20 December 19371938: 5 January 1938 to 6 October 19381939: 16 February 1939 to 31 December 19391940: 8 February 1940 to 12 December 19401941: 7 January 1941 to 20 December 19411942: 8 January 1942 to 25 October 19421943: 20 January 1943 to 25 October 19431944: 9 January 1944 to 10 December 19441945: 27 April 1945 to 10 November 19451946: 5 January 1946 to 13 November 19461947: 22 March 1947 to 7 November 19471948: 12 March 1948 to 20 December 19481949: 21 January 1949 to 17 December 19491950: 21 March 1950 to 29 December 19501951: 6 January 1951 to 26 November 19511952: 5 March 1952 to 26 November 19521953: 23 March 1953 to 22 December 19531954: 8 January 1954 to 14 December 19541955: 17 February 1955 to 27 December 19551956: 23 February 1956 to 25 October 19561957: 4 February 1957 to 11 November 19571958: 27 January 1958 to 18 November 19581959: 3 March 1959 to 16 December 19591960: 17 February 1960 to 21 December 19601961: 3 January 1961 to 20 December 19611962: 25 January 1962 to 21 November 19621963: 7 January 1963 to 19 December 19631964: 14 February 1964 to 31 December 19641965: 9 January 1965 to 16 December 19651966: 16 January 1966 to 25 December 19661967: 7 January 1967 to 30 November 19671968: 9 April 1968 to 22 December 19681969: 19 January 1969 to 8 November 19691970: 7 May 1970 to 13 December 19701971: 13 January 1971 to 25 December 19711972: 9 January 1972 to 28 December 19721973: 13 March 1973 to 5 December 19731974: 30 April 1974 to 3 November 19741975: 1 January 1975 to 17 November 19751976: 6 March 1976 to 30 December 19761977: 13 January 1977 to 30 November 19771978: 25 January 1978 to 30 December 19781979: 11 January 1979 to 21 October 19791980: 3 January 1980 to 23 December 19801981: 23 January 1981 to 19 December 19811982: 14 January 1982 to 26 December 19821987: 21 January 1987 to 10 December 19871988: 7 March 1988 to 2 November 198819101930193919471955196319711979JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Groot Constantia meeting 10 mm (0.39 in).
First to last qualifying date each year at Groot Constantia
YearFirst dateLast date
19101910-03-271910-11-10
19111911-01-011911-12-30
19121912-03-081912-11-25
19131913-02-081913-12-26
19141914-01-031914-12-21
19161916-01-181916-12-10
19251925-01-121925-11-01
19291929-02-131929-12-29
19301930-02-011930-12-13
19311931-01-151931-12-31
19321932-06-061932-11-08
19331933-03-071933-08-28
19341934-01-241934-10-20
19351935-03-051935-12-15
19371937-03-221937-12-20
19381938-01-051938-10-06
19391939-02-161939-12-31
19401940-02-081940-12-12
19411941-01-071941-12-20
19421942-01-081942-10-25
19431943-01-201943-10-25
19441944-01-091944-12-10
19451945-04-271945-11-10
19461946-01-051946-11-13
19471947-03-221947-11-07
19481948-03-121948-12-20
19491949-01-211949-12-17
19501950-03-211950-12-29
19511951-01-061951-11-26
19521952-03-051952-11-26
19531953-03-231953-12-22
19541954-01-081954-12-14
19551955-02-171955-12-27
19561956-02-231956-10-25
19571957-02-041957-11-11
19581958-01-271958-11-18
19591959-03-031959-12-16
19601960-02-171960-12-21
19611961-01-031961-12-20
19621962-01-251962-11-21
19631963-01-071963-12-19
19641964-02-141964-12-31
19651965-01-091965-12-16
19661966-01-161966-12-25
19671967-01-071967-11-30
19681968-04-091968-12-22
19691969-01-191969-11-08
19701970-05-071970-12-13
19711971-01-131971-12-25
19721972-01-091972-12-28
19731973-03-131973-12-05
19741974-04-301974-11-03
19751975-01-011975-11-17
19761976-03-061976-12-30
19771977-01-131977-11-30
19781978-01-251978-12-30
19791979-01-111979-10-21
19801980-01-031980-12-23
19811981-01-231981-12-19
19821982-01-141982-12-26
19871987-01-211987-12-10
19881988-03-071988-11-02

Every Fixed Threshold

Fixed thresholds at Groot Constantia
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain6260195132
25 mm (0.98 in): Days with 25 mm or more rain6027194111
50 mm (1.97 in): Days with 50 mm or more rain48819541
100 mm (3.94 in): Days with 100 mm or more rain1119141

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1910.

Download the Data

  • Data for Groot Constantia 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).