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

Riacho de Santana Threshold Days by Year (BR047742140)

4 fixed thresholds counted per year at Riacho de Santana (BR047742140): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Riacho de Santana Thresholds

  • Riacho de Santana: days with 10 mm (0.39 in) or more of precipitation in 39 years, most in 1960 with 49.
  • Riacho de Santana: days with 25 mm (0.98 in) or more of precipitation in 38 years, most in 1958 with 23.
  • Riacho de Santana: days with 50 mm (1.97 in) or more of precipitation in 31 years, most in 1960 with 6.
  • Riacho de Santana: days with 100 mm (3.94 in) or more of precipitation in 4 years, most in 1938 with 1.
  • 4 fixed thresholds have at least one qualifying day at Riacho de Santana.
39 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Riacho de Santana Days per year at Riacho de Santana with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 49 in 1960. 02040601934: 61935: 251936: 281937: 331938: 241939: 181940: 401941: 311942: 321943: 281944: 381945: 361946: 181947: 341948: 261949: 231950: 151951: 171952: 481953: 171954: 251955: 211956: 261957: 341958: 411959: 161960: 491961: 161962: 341963: 201964: 311965: 301966: 391967: 351968: 371969: 361970: 301971: 221980: 331934193819421946195019541958196219661970
Days per year at Riacho de Santana with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 49 in 1960.
Days with 10 mm (0.39 in) or more of precipitation per year at Riacho de Santana
YearDaysDecade average
1934622.3
19352522.3
19362822.3
19373322.3
19382422.3
19391822.3
19404030.6
19413130.6
19423230.6
19432830.6
19443830.6
19453630.6
19461830.6
19473430.6
19482630.6
19492330.6
19501526
19511726
19524826
19531726
19542526
19552126
19562626
19573426
19584126
19591626
19604932.7
19611632.7
19623432.7
19632032.7
19643132.7
19653032.7
19663932.7
19673532.7
19683732.7
19693632.7
19703026
19712226
19803333
First to last qualifying date each year at Riacho de Santana For each year, a bar from the first to the last day at Riacho de Santana meeting 10 mm (0.39 in). 1934: 28 February 1934 to 30 October 19341935: 2 January 1935 to 27 November 19351936: 1 January 1936 to 21 December 19361937: 2 January 1937 to 26 December 19371938: 12 January 1938 to 22 December 19381939: 6 January 1939 to 28 December 19391940: 2 January 1940 to 22 December 19401941: 14 January 1941 to 30 December 19411942: 2 January 1942 to 29 December 19421943: 18 January 1943 to 24 December 19431944: 19 January 1944 to 27 December 19441945: 8 January 1945 to 30 December 19451946: 2 January 1946 to 30 December 19461947: 3 January 1947 to 29 December 19471948: 5 January 1948 to 30 December 19481949: 3 January 1949 to 24 December 19491950: 11 January 1950 to 17 December 19501951: 5 February 1951 to 31 December 19511952: 4 January 1952 to 31 December 19521953: 8 February 1953 to 31 December 19531954: 1 January 1954 to 7 December 19541955: 17 October 1955 to 30 December 19551956: 13 February 1956 to 30 December 19561957: 2 January 1957 to 20 December 19571958: 18 January 1958 to 31 December 19581959: 4 January 1959 to 31 December 19591960: 1 January 1960 to 8 December 19601961: 11 January 1961 to 30 December 19611962: 6 January 1962 to 24 December 19621963: 8 January 1963 to 31 December 19631964: 6 January 1964 to 31 December 19641965: 21 January 1965 to 17 December 19651966: 2 January 1966 to 30 December 19661967: 17 January 1967 to 27 December 19671968: 8 January 1968 to 30 December 19681969: 21 January 1969 to 28 December 19691970: 12 January 1970 to 5 December 19701971: 17 January 1971 to 7 December 19711980: 2 January 1980 to 31 December 198019341939194419491954195919641969JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Riacho de Santana meeting 10 mm (0.39 in).
First to last qualifying date each year at Riacho de Santana
YearFirst dateLast date
19341934-02-281934-10-30
19351935-01-021935-11-27
19361936-01-011936-12-21
19371937-01-021937-12-26
19381938-01-121938-12-22
19391939-01-061939-12-28
19401940-01-021940-12-22
19411941-01-141941-12-30
19421942-01-021942-12-29
19431943-01-181943-12-24
19441944-01-191944-12-27
19451945-01-081945-12-30
19461946-01-021946-12-30
19471947-01-031947-12-29
19481948-01-051948-12-30
19491949-01-031949-12-24
19501950-01-111950-12-17
19511951-02-051951-12-31
19521952-01-041952-12-31
19531953-02-081953-12-31
19541954-01-011954-12-07
19551955-10-171955-12-30
19561956-02-131956-12-30
19571957-01-021957-12-20
19581958-01-181958-12-31
19591959-01-041959-12-31
19601960-01-011960-12-08
19611961-01-111961-12-30
19621962-01-061962-12-24
19631963-01-081963-12-31
19641964-01-061964-12-31
19651965-01-211965-12-17
19661966-01-021966-12-30
19671967-01-171967-12-27
19681968-01-081968-12-30
19691969-01-211969-12-28
19701970-01-121970-12-05
19711971-01-171971-12-07
19801980-01-021980-12-31

Every Fixed Threshold

Fixed thresholds at Riacho de Santana
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain3949196033
25 mm (0.98 in): Days with 25 mm or more rain3823195810
50 mm (1.97 in): Days with 50 mm or more rain31619602
100 mm (3.94 in): Days with 100 mm or more rain4119381

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1934.

Download the Data

  • Data for Riacho de Santana 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).