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Built 2026-10-15 (15 October 2026)

Ibeka (Bos) Threshold Days by Year

4 fixed thresholds counted per year at Ibeka (Bos) (SF001033770): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Ibeka (Bos) Thresholds

  • Ibeka (Bos): days with 10 mm (0.39 in) or more of precipitation in 72 years, most in 1963 with 41.
  • Ibeka (Bos): days with 25 mm (0.98 in) or more of precipitation in 72 years, most in 1994 with 17.
  • Ibeka (Bos): days with 50 mm (1.97 in) or more of precipitation in 51 years, most in 1994 with 11.
  • Ibeka (Bos): days with 100 mm (3.94 in) or more of precipitation in 11 years, most in 1993 with 2.
  • 4 fixed thresholds have at least one qualifying day at Ibeka (Bos).
72 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Ibeka (Bos) Days per year at Ibeka (Bos) with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 41 in 1963. 02040601924: 161926: 211927: 191928: 241929: 321930: 231931: 251932: 271933: 241934: 261935: 211936: 321937: 211938: 301939: 281940: 261941: 161942: 301943: 291944: 181945: 211946: 251947: 241948: 211949: 141950: 221951: 181952: 151953: 271954: 211955: 241956: 311957: 191958: 221959: 321960: 281961: 231962: 231963: 411964: 221965: 221966: 221967: 251968: 161969: 241970: 231971: 291972: 231973: 191974: 311975: 271976: 401977: 301978: 281979: 211980: 111981: 271982: 191983: 141984: 291985: 181986: 171987: 151988: 251989: 271990: 211991: 251992: 181993: 231994: 251995: 221996: 21192419331941194919571965197319811989
Days per year at Ibeka (Bos) with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 41 in 1963.
Days with 10 mm (0.39 in) or more of precipitation per year at Ibeka (Bos)
YearDaysDecade average
19241622.4
19262122.4
19271922.4
19282422.4
19293222.4
19302325.7
19312525.7
19322725.7
19332425.7
19342625.7
19352125.7
19363225.7
19372125.7
19383025.7
19392825.7
19402622.4
19411622.4
19423022.4
19432922.4
19441822.4
19452122.4
19462522.4
19472422.4
19482122.4
19491422.4
19502223.1
19511823.1
19521523.1
19532723.1
19542123.1
19552423.1
19563123.1
19571923.1
19582223.1
19593223.1
19602824.6
19612324.6
19622324.6
19634124.6
19642224.6
19652224.6
19662224.6
19672524.6
19681624.6
19692424.6
19702327.1
19712927.1
19722327.1
19731927.1
19743127.1
19752727.1
19764027.1
19773027.1
19782827.1
19792127.1
19801120.2
19812720.2
19821920.2
19831420.2
19842920.2
19851820.2
19861720.2
19871520.2
19882520.2
19892720.2
19902122.1
19912522.1
19921822.1
19932322.1
19942522.1
19952222.1
19962122.1
First to last qualifying date each year at Ibeka (Bos) For each year, a bar from the first to the last day at Ibeka (Bos) meeting 10 mm (0.39 in). 1924: 10 January 1924 to 27 December 19241926: 15 March 1926 to 28 December 19261927: 2 February 1927 to 29 December 19271928: 5 January 1928 to 21 December 19281929: 31 January 1929 to 30 December 19291930: 15 January 1930 to 16 December 19301931: 2 January 1931 to 30 December 19311932: 1 January 1932 to 20 December 19321933: 13 January 1933 to 31 December 19331934: 2 January 1934 to 10 December 19341935: 4 January 1935 to 19 December 19351936: 2 January 1936 to 11 December 19361937: 10 January 1937 to 22 December 19371938: 22 January 1938 to 30 December 19381939: 2 January 1939 to 12 December 19391940: 8 January 1940 to 22 December 19401941: 20 January 1941 to 31 October 19411942: 13 January 1942 to 16 December 19421943: 21 January 1943 to 19 December 19431944: 9 January 1944 to 16 November 19441945: 1 January 1945 to 4 December 19451946: 8 January 1946 to 20 December 19461947: 2 January 1947 to 24 December 19471948: 9 January 1948 to 21 December 19481949: 17 February 1949 to 19 December 19491950: 9 January 1950 to 7 December 19501951: 3 January 1951 to 12 December 19511952: 7 January 1952 to 16 December 19521953: 3 February 1953 to 29 December 19531954: 2 January 1954 to 20 November 19541955: 4 January 1955 to 14 December 19551956: 13 January 1956 to 21 December 19561957: 7 January 1957 to 30 December 19571958: 7 January 1958 to 21 December 19581959: 1 January 1959 to 21 December 19591960: 3 January 1960 to 29 December 19601961: 15 January 1961 to 24 December 19611962: 15 January 1962 to 12 December 19621963: 3 January 1963 to 13 December 19631964: 1 January 1964 to 27 December 19641965: 5 January 1965 to 16 December 19651966: 9 January 1966 to 31 December 19661967: 14 January 1967 to 11 December 19671968: 13 March 1968 to 7 December 19681969: 8 January 1969 to 29 December 19691970: 1 February 1970 to 25 December 19701971: 7 January 1971 to 12 December 19711972: 9 January 1972 to 14 December 19721973: 7 January 1973 to 23 December 19731974: 7 January 1974 to 29 November 19741975: 28 January 1975 to 31 December 19751976: 4 January 1976 to 27 December 19761977: 1 January 1977 to 31 December 19771978: 5 January 1978 to 23 December 19781979: 19 January 1979 to 24 December 19791980: 20 January 1980 to 1 December 19801981: 23 January 1981 to 22 December 19811982: 17 February 1982 to 30 October 19821983: 1 February 1983 to 30 December 19831984: 8 January 1984 to 20 December 19841985: 13 January 1985 to 19 December 19851986: 3 February 1986 to 26 November 19861987: 11 January 1987 to 22 December 19871988: 14 January 1988 to 30 December 19881989: 1 January 1989 to 26 December 19891990: 9 January 1990 to 16 December 19901991: 20 January 1991 to 31 December 19911992: 20 January 1992 to 23 December 19921993: 10 January 1993 to 14 December 19931994: 3 January 1994 to 27 December 19941995: 5 January 1995 to 10 December 19951996: 7 January 1996 to 30 December 199619241934194319521961197019791988JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Ibeka (Bos) meeting 10 mm (0.39 in).
First to last qualifying date each year at Ibeka (Bos)
YearFirst dateLast date
19241924-01-101924-12-27
19261926-03-151926-12-28
19271927-02-021927-12-29
19281928-01-051928-12-21
19291929-01-311929-12-30
19301930-01-151930-12-16
19311931-01-021931-12-30
19321932-01-011932-12-20
19331933-01-131933-12-31
19341934-01-021934-12-10
19351935-01-041935-12-19
19361936-01-021936-12-11
19371937-01-101937-12-22
19381938-01-221938-12-30
19391939-01-021939-12-12
19401940-01-081940-12-22
19411941-01-201941-10-31
19421942-01-131942-12-16
19431943-01-211943-12-19
19441944-01-091944-11-16
19451945-01-011945-12-04
19461946-01-081946-12-20
19471947-01-021947-12-24
19481948-01-091948-12-21
19491949-02-171949-12-19
19501950-01-091950-12-07
19511951-01-031951-12-12
19521952-01-071952-12-16
19531953-02-031953-12-29
19541954-01-021954-11-20
19551955-01-041955-12-14
19561956-01-131956-12-21
19571957-01-071957-12-30
19581958-01-071958-12-21
19591959-01-011959-12-21
19601960-01-031960-12-29
19611961-01-151961-12-24
19621962-01-151962-12-12
19631963-01-031963-12-13
19641964-01-011964-12-27
19651965-01-051965-12-16
19661966-01-091966-12-31
19671967-01-141967-12-11
19681968-03-131968-12-07
19691969-01-081969-12-29
19701970-02-011970-12-25
19711971-01-071971-12-12
19721972-01-091972-12-14
19731973-01-071973-12-23
19741974-01-071974-11-29
19751975-01-281975-12-31
19761976-01-041976-12-27
19771977-01-011977-12-31
19781978-01-051978-12-23
19791979-01-191979-12-24
19801980-01-201980-12-01
19811981-01-231981-12-22
19821982-02-171982-10-30
19831983-02-011983-12-30
19841984-01-081984-12-20
19851985-01-131985-12-19
19861986-02-031986-11-26
19871987-01-111987-12-22
19881988-01-141988-12-30
19891989-01-011989-12-26
19901990-01-091990-12-16
19911991-01-201991-12-31
19921992-01-201992-12-23
19931993-01-101993-12-14
19941994-01-031994-12-27
19951995-01-051995-12-10
19961996-01-071996-12-30

Every Fixed Threshold

Fixed thresholds at Ibeka (Bos)
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain7241196321
25 mm (0.98 in): Days with 25 mm or more rain721719948
50 mm (1.97 in): Days with 50 mm or more rain511119943
100 mm (3.94 in): Days with 100 mm or more rain11219931

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1924.

Download the Data

  • Data for Ibeka (Bos) 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 2026-10-13 (13 October 2026). Threshold counts are computed by this site.

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