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

Riacho Threshold Days by Year (BR001940003)

4 fixed thresholds counted per year at Riacho (BR001940003): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Riacho Thresholds

  • Riacho: days with 10 mm (0.39 in) or more of precipitation in 46 years, most in 1954 with 83.
  • Riacho: days with 25 mm (0.98 in) or more of precipitation in 46 years, most in 1985 with 26.
  • Riacho: days with 50 mm (1.97 in) or more of precipitation in 38 years, most in 1984 with 7.
  • Riacho: days with 100 mm (3.94 in) or more of precipitation in 11 years, most in 1984 with 2.
  • 4 fixed thresholds have at least one qualifying day at Riacho.
46 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Riacho Days per year at Riacho with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 83 in 1954. 02550751001948: 651949: 591950: 651951: 311952: 631953: 541954: 831956: 381957: 431958: 381959: 391960: 361961: 331962: 411963: 181964: 471966: 351967: 351968: 441969: 341970: 381971: 471972: 321973: 401974: 411975: 441976: 331977: 411978: 461979: 401980: 391981: 531982: 411983: 591984: 421985: 521986: 411987: 341988: 391989: 401993: 51994: 131995: 141998: 251999: 432000: 351948195319591964197019751980198519932000
Days per year at Riacho with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 83 in 1954.
Days with 10 mm (0.39 in) or more of precipitation per year at Riacho
YearDaysDecade average
19486562
19495962
19506550.4
19513150.4
19526350.4
19535450.4
19548350.4
19563850.4
19574350.4
19583850.4
19593950.4
19603635.9
19613335.9
19624135.9
19631835.9
19644735.9
19663535.9
19673535.9
19684435.9
19693435.9
19703840.2
19714740.2
19723240.2
19734040.2
19744140.2
19754440.2
19763340.2
19774140.2
19784640.2
19794040.2
19803944
19815344
19824144
19835944
19844244
19855244
19864144
19873444
19883944
19894044
1993520
19941320
19951420
19982520
19994320
20003535
First to last qualifying date each year at Riacho For each year, a bar from the first to the last day at Riacho meeting 10 mm (0.39 in). 1948: 12 February 1948 to 28 December 19481949: 1 January 1949 to 22 December 19491950: 15 January 1950 to 31 December 19501951: 1 January 1951 to 31 December 19511952: 21 January 1952 to 26 December 19521953: 10 January 1953 to 24 December 19531954: 1 January 1954 to 30 December 19541956: 1 January 1956 to 29 December 19561957: 1 January 1957 to 20 December 19571958: 11 January 1958 to 29 December 19581959: 3 January 1959 to 26 December 19591960: 1 January 1960 to 17 December 19601961: 7 January 1961 to 31 December 19611962: 4 January 1962 to 28 December 19621963: 14 January 1963 to 27 December 19631964: 10 January 1964 to 31 December 19641966: 4 January 1966 to 29 December 19661967: 16 January 1967 to 26 December 19671968: 6 January 1968 to 19 December 19681969: 12 January 1969 to 29 December 19691970: 11 January 1970 to 17 December 19701971: 6 February 1971 to 10 December 19711972: 14 January 1972 to 24 December 19721973: 16 January 1973 to 23 December 19731974: 3 January 1974 to 27 December 19741975: 3 January 1975 to 16 December 19751976: 3 January 1976 to 28 December 19761977: 11 January 1977 to 26 December 19771978: 8 February 1978 to 30 December 19781979: 7 January 1979 to 27 December 19791980: 2 January 1980 to 30 December 19801981: 1 January 1981 to 28 December 19811982: 4 January 1982 to 25 December 19821983: 1 January 1983 to 30 December 19831984: 22 January 1984 to 31 December 19841985: 1 January 1985 to 30 December 19851986: 1 January 1986 to 25 December 19861987: 18 January 1987 to 23 December 19871988: 2 January 1988 to 18 December 19881989: 5 February 1989 to 21 December 19891993: 16 June 1993 to 18 December 19931994: 6 January 1994 to 23 November 19941995: 22 January 1995 to 1 November 19951998: 8 January 1998 to 20 December 19981999: 4 January 1999 to 27 December 19992000: 10 January 2000 to 21 December 200019481954196119681974198019861995JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Riacho meeting 10 mm (0.39 in).
First to last qualifying date each year at Riacho
YearFirst dateLast date
19481948-02-121948-12-28
19491949-01-011949-12-22
19501950-01-151950-12-31
19511951-01-011951-12-31
19521952-01-211952-12-26
19531953-01-101953-12-24
19541954-01-011954-12-30
19561956-01-011956-12-29
19571957-01-011957-12-20
19581958-01-111958-12-29
19591959-01-031959-12-26
19601960-01-011960-12-17
19611961-01-071961-12-31
19621962-01-041962-12-28
19631963-01-141963-12-27
19641964-01-101964-12-31
19661966-01-041966-12-29
19671967-01-161967-12-26
19681968-01-061968-12-19
19691969-01-121969-12-29
19701970-01-111970-12-17
19711971-02-061971-12-10
19721972-01-141972-12-24
19731973-01-161973-12-23
19741974-01-031974-12-27
19751975-01-031975-12-16
19761976-01-031976-12-28
19771977-01-111977-12-26
19781978-02-081978-12-30
19791979-01-071979-12-27
19801980-01-021980-12-30
19811981-01-011981-12-28
19821982-01-041982-12-25
19831983-01-011983-12-30
19841984-01-221984-12-31
19851985-01-011985-12-30
19861986-01-011986-12-25
19871987-01-181987-12-23
19881988-01-021988-12-18
19891989-02-051989-12-21
19931993-06-161993-12-18
19941994-01-061994-11-23
19951995-01-221995-11-01
19981998-01-081998-12-20
19991999-01-041999-12-27
20002000-01-102000-12-21

Every Fixed Threshold

Fixed thresholds at Riacho
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain4683195435
25 mm (0.98 in): Days with 25 mm or more rain4626198516
50 mm (1.97 in): Days with 50 mm or more rain38719846
100 mm (3.94 in): Days with 100 mm or more rain11219841

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1948.

Download the Data

  • Data for Riacho 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).