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Built 2026-10-19 (19 October 2026)

Riveren Threshold Days by Year (ASN00014831)

5 fixed thresholds counted per year at Riveren (ASN00014831): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Riveren Thresholds

  • Riveren: days with 10 mm (0.39 in) or more of precipitation in 45 years, most in 2000 with 35.
  • Riveren: days with 25 mm (0.98 in) or more of precipitation in 44 years, most in 1997 with 14.
  • Riveren: days with 50 mm (1.97 in) or more of precipitation in 36 years, most in 1993 with 8.
  • Riveren: days with 100 mm (3.94 in) or more of precipitation in 8 years, most in 2001 with 5.
  • 5 fixed thresholds have at least one qualifying day at Riveren.
45 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Riveren Days per year at Riveren with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 35 in 2000. 0102030401969: 71970: 81971: 131972: 81973: 191974: 251975: 241976: 161977: 171978: 201979: 201980: 131981: 171982: 261983: 141984: 171985: 171986: 111987: 261988: 191989: 71990: 111991: 171992: 121993: 241994: 161995: 171996: 181997: 232000: 352001: 282002: 172003: 152004: 212005: 182006: 202007: 222008: 152009: 132017: 272018: 122019: 72020: 252021: 202025: 16196919741979198419891994200120062018
Days per year at Riveren with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 35 in 2000.
Days with 10 mm (0.39 in) or more of precipitation per year at Riveren
YearDaysDecade average
196977
1970817
19711317
1972817
19731917
19742517
19752417
19761617
19771717
19782017
19792017
19801316.7
19811716.7
19822616.7
19831416.7
19841716.7
19851716.7
19861116.7
19872616.7
19881916.7
1989716.7
19901117.3
19911717.3
19921217.3
19932417.3
19941617.3
19951717.3
19961817.3
19972317.3
20003520.4
20012820.4
20021720.4
20031520.4
20042120.4
20051820.4
20062020.4
20072220.4
20081520.4
20091320.4
20172715.3
20181215.3
2019715.3
20202520.3
20212020.3
20251620.3
First to last qualifying date each year at Riveren For each year, a bar from the first to the last day at Riveren meeting 10 mm (0.39 in). 1969: 9 January 1969 to 27 October 19691970: 26 January 1970 to 7 December 19701971: 27 January 1971 to 15 December 19711972: 15 February 1972 to 8 November 19721973: 8 January 1973 to 30 December 19731974: 6 January 1974 to 25 December 19741975: 8 January 1975 to 18 December 19751976: 8 January 1976 to 11 December 19761977: 1 January 1977 to 19 December 19771978: 5 January 1978 to 24 December 19781979: 2 January 1979 to 29 December 19791980: 4 January 1980 to 14 October 19801981: 15 January 1981 to 25 November 19811982: 4 January 1982 to 31 December 19821983: 4 January 1983 to 24 December 19831984: 1 January 1984 to 12 November 19841985: 26 January 1985 to 30 December 19851986: 11 January 1986 to 22 October 19861987: 3 January 1987 to 29 December 19871988: 4 January 1988 to 31 December 19881989: 17 January 1989 to 28 December 19891990: 11 January 1990 to 10 December 19901991: 20 January 1991 to 28 November 19911992: 2 January 1992 to 17 December 19921993: 4 January 1993 to 27 December 19931994: 16 January 1994 to 24 December 19941995: 6 January 1995 to 31 December 19951996: 2 January 1996 to 30 December 19961997: 1 January 1997 to 23 December 19972000: 12 January 2000 to 22 December 20002001: 30 January 2001 to 16 December 20012002: 11 January 2002 to 4 December 20022003: 23 January 2003 to 26 December 20032004: 2 January 2004 to 29 December 20042005: 2 January 2005 to 30 December 20052006: 6 January 2006 to 3 November 20062007: 7 January 2007 to 18 December 20072008: 29 January 2008 to 29 December 20082009: 1 January 2009 to 19 December 20092017: 1 January 2017 to 1 December 20172018: 2 January 2018 to 14 December 20182019: 1 January 2019 to 2 March 20192020: 1 January 2020 to 28 December 20202021: 5 January 2021 to 23 November 20212025: 11 January 2025 to 10 November 202519691975198119871993200120072020JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Riveren meeting 10 mm (0.39 in).
First to last qualifying date each year at Riveren
YearFirst dateLast date
19691969-01-091969-10-27
19701970-01-261970-12-07
19711971-01-271971-12-15
19721972-02-151972-11-08
19731973-01-081973-12-30
19741974-01-061974-12-25
19751975-01-081975-12-18
19761976-01-081976-12-11
19771977-01-011977-12-19
19781978-01-051978-12-24
19791979-01-021979-12-29
19801980-01-041980-10-14
19811981-01-151981-11-25
19821982-01-041982-12-31
19831983-01-041983-12-24
19841984-01-011984-11-12
19851985-01-261985-12-30
19861986-01-111986-10-22
19871987-01-031987-12-29
19881988-01-041988-12-31
19891989-01-171989-12-28
19901990-01-111990-12-10
19911991-01-201991-11-28
19921992-01-021992-12-17
19931993-01-041993-12-27
19941994-01-161994-12-24
19951995-01-061995-12-31
19961996-01-021996-12-30
19971997-01-011997-12-23
20002000-01-122000-12-22
20012001-01-302001-12-16
20022002-01-112002-12-04
20032003-01-232003-12-26
20042004-01-022004-12-29
20052005-01-022005-12-30
20062006-01-062006-11-03
20072007-01-072007-12-18
20082008-01-292008-12-29
20092009-01-012009-12-19
20172017-01-012017-12-01
20182018-01-022018-12-14
20192019-01-012019-03-02
20202020-01-012020-12-28
20212021-01-052021-11-23
20252025-01-112025-11-10

Every Fixed Threshold

Fixed thresholds at Riveren
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain4535200016
25 mm (0.98 in): Days with 25 mm or more rain441419975
50 mm (1.97 in): Days with 50 mm or more rain36819931
100 mm (3.94 in): Days with 100 mm or more rain8520015
200 mm (7.87 in): Days with 200 mm or more rain2119931

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1969.

Download the Data

  • Data for Riveren 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).