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Built 2026-10-19 (19 October 2026)

Valkenburg Threshold Days by Year (NLE00152501)

3 fixed thresholds counted per year at Valkenburg (NLE00152501): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Valkenburg Thresholds

  • Valkenburg: days with 10 mm (0.39 in) or more of precipitation in 43 years, most in 1998 with 32.
  • Valkenburg: days with 25 mm (0.98 in) or more of precipitation in 37 years, most in 2004 with 7.
  • Valkenburg: days with 50 mm (1.97 in) or more of precipitation in 4 years, most in 1982 with 1.
  • 3 fixed thresholds have at least one qualifying day at Valkenburg.
43 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Valkenburg Days per year at Valkenburg with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 32 in 1998. 0102030401973: 191974: 231975: 161976: 151977: 171978: 171979: 281980: 191981: 221982: 191983: 211984: 221985: 251986: 221987: 251988: 201989: 191990: 221991: 161992: 251993: 291994: 231995: 201996: 171997: 131998: 321999: 292000: 252001: 322002: 282003: 222004: 252005: 222006: 242007: 222008: 322009: 212010: 262011: 262012: 262013: 162014: 182015: 20197319781983198819931998200320082013
Days per year at Valkenburg with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 32 in 1998.
Days with 10 mm (0.39 in) or more of precipitation per year at Valkenburg
YearDaysDecade average
19731919.3
19742319.3
19751619.3
19761519.3
19771719.3
19781719.3
19792819.3
19801921.4
19812221.4
19821921.4
19832121.4
19842221.4
19852521.4
19862221.4
19872521.4
19882021.4
19891921.4
19902222.6
19911622.6
19922522.6
19932922.6
19942322.6
19952022.6
19961722.6
19971322.6
19983222.6
19992922.6
20002525.3
20013225.3
20022825.3
20032225.3
20042525.3
20052225.3
20062425.3
20072225.3
20083225.3
20092125.3
20102622
20112622
20122622
20131622
20141822
20152022
First to last qualifying date each year at Valkenburg For each year, a bar from the first to the last day at Valkenburg meeting 10 mm (0.39 in). 1973: 12 February 1973 to 10 November 19731974: 8 June 1974 to 11 December 19741975: 16 January 1975 to 31 December 19751976: 1 January 1976 to 3 December 19761977: 27 January 1977 to 23 November 19771978: 19 March 1978 to 28 December 19781979: 1 February 1979 to 30 December 19791980: 31 January 1980 to 20 December 19801981: 12 January 1981 to 6 December 19811982: 5 January 1982 to 22 December 19821983: 3 January 1983 to 22 December 19831984: 16 January 1984 to 20 December 19841985: 6 January 1985 to 26 December 19851986: 2 January 1986 to 30 December 19861987: 1 January 1987 to 17 December 19871988: 5 January 1988 to 18 December 19881989: 7 March 1989 to 20 December 19891990: 23 January 1990 to 26 December 19901991: 2 January 1991 to 7 November 19911992: 9 January 1992 to 11 December 19921993: 6 January 1993 to 30 December 19931994: 2 January 1994 to 27 December 19941995: 9 January 1995 to 22 December 19951996: 12 February 1996 to 19 December 19961997: 12 February 1997 to 10 December 19971998: 2 January 1998 to 3 November 19981999: 26 January 1999 to 26 December 19992000: 10 February 2000 to 24 December 20002001: 1 January 2001 to 27 December 20012002: 15 January 2002 to 29 December 20022003: 1 January 2003 to 28 December 20032004: 19 January 2004 to 28 December 20042005: 20 January 2005 to 30 December 20052006: 15 February 2006 to 8 December 20062007: 17 January 2007 to 6 December 20072008: 5 January 2008 to 11 December 20082009: 23 January 2009 to 25 December 20092010: 2 February 2010 to 16 December 20102011: 6 January 2011 to 18 December 20112012: 1 January 2012 to 25 December 20122013: 9 March 2013 to 21 December 20132014: 23 January 2014 to 27 December 20142015: 8 January 2015 to 30 November 201519731979198519911997200320092015JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Valkenburg meeting 10 mm (0.39 in).
First to last qualifying date each year at Valkenburg
YearFirst dateLast date
19731973-02-121973-11-10
19741974-06-081974-12-11
19751975-01-161975-12-31
19761976-01-011976-12-03
19771977-01-271977-11-23
19781978-03-191978-12-28
19791979-02-011979-12-30
19801980-01-311980-12-20
19811981-01-121981-12-06
19821982-01-051982-12-22
19831983-01-031983-12-22
19841984-01-161984-12-20
19851985-01-061985-12-26
19861986-01-021986-12-30
19871987-01-011987-12-17
19881988-01-051988-12-18
19891989-03-071989-12-20
19901990-01-231990-12-26
19911991-01-021991-11-07
19921992-01-091992-12-11
19931993-01-061993-12-30
19941994-01-021994-12-27
19951995-01-091995-12-22
19961996-02-121996-12-19
19971997-02-121997-12-10
19981998-01-021998-11-03
19991999-01-261999-12-26
20002000-02-102000-12-24
20012001-01-012001-12-27
20022002-01-152002-12-29
20032003-01-012003-12-28
20042004-01-192004-12-28
20052005-01-202005-12-30
20062006-02-152006-12-08
20072007-01-172007-12-06
20082008-01-052008-12-11
20092009-01-232009-12-25
20102010-02-022010-12-16
20112011-01-062011-12-18
20122012-01-012012-12-25
20132013-03-092013-12-21
20142014-01-232014-12-27
20152015-01-082015-11-30

Every Fixed Threshold

Fixed thresholds at Valkenburg
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain4332199820
25 mm (0.98 in): Days with 25 mm or more rain37720041
50 mm (1.97 in): Days with 50 mm or more rain4119821

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1973.

Download the Data

  • Data for Valkenburg 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).