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Built 2026-10-17 (17 October 2026)

Pine Ridge (Round Island) Threshold Days by Year

4 fixed thresholds counted per year at Pine Ridge (Round Island) (ASN00055239): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Pine Ridge (Round Island) Thresholds

  • Pine Ridge (Round Island): days with 10 mm (0.39 in) or more of precipitation in 42 years, most in 1998 with 38.
  • Pine Ridge (Round Island): days with 25 mm (0.98 in) or more of precipitation in 42 years, most in 2004 with 16.
  • Pine Ridge (Round Island): days with 50 mm (1.97 in) or more of precipitation in 26 years, most in 2000 with 6.
  • Pine Ridge (Round Island): days with 100 mm (3.94 in) or more of precipitation in 3 years, most in 1976 with 1.
  • 4 fixed thresholds have at least one qualifying day at Pine Ridge (Round Island).
42 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Pine Ridge (Round Island) Days per year at Pine Ridge (Round Island) with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 38 in 1998. 0102030401966: 221967: 131972: 141973: 281974: 131975: 181976: 241977: 271978: 341979: 201980: 171981: 251982: 71983: 331984: 281985: 181986: 211987: 231988: 261989: 251990: 271991: 221992: 211993: 281994: 151995: 221996: 221997: 191998: 381999: 322000: 282001: 212002: 132003: 172004: 282005: 202006: 152007: 312008: 212009: 222013: 172014: 20196619751980198519901995200020052013
Days per year at Pine Ridge (Round Island) with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 38 in 1998.
Days with 10 mm (0.39 in) or more of precipitation per year at Pine Ridge (Round Island)
YearDaysDecade average
19662217.5
19671317.5
19721422.3
19732822.3
19741322.3
19751822.3
19762422.3
19772722.3
19783422.3
19792022.3
19801722.3
19812522.3
1982722.3
19833322.3
19842822.3
19851822.3
19862122.3
19872322.3
19882622.3
19892522.3
19902724.6
19912224.6
19922124.6
19932824.6
19941524.6
19952224.6
19962224.6
19971924.6
19983824.6
19993224.6
20002821.6
20012121.6
20021321.6
20031721.6
20042821.6
20052021.6
20061521.6
20073121.6
20082121.6
20092221.6
20131718.5
20142018.5
First to last qualifying date each year at Pine Ridge (Round Island) For each year, a bar from the first to the last day at Pine Ridge (Round Island) meeting 10 mm (0.39 in). 1966: 24 February 1966 to 31 December 19661967: 1 January 1967 to 30 December 19671972: 13 January 1972 to 25 November 19721973: 14 January 1973 to 26 December 19731974: 7 January 1974 to 18 November 19741975: 4 January 1975 to 19 December 19751976: 13 January 1976 to 24 December 19761977: 13 January 1977 to 2 December 19771978: 3 January 1978 to 26 December 19781979: 18 January 1979 to 9 December 19791980: 3 January 1980 to 15 December 19801981: 7 January 1981 to 24 December 19811982: 1 February 1982 to 30 December 19821983: 3 January 1983 to 27 December 19831984: 1 January 1984 to 12 December 19841985: 29 January 1985 to 9 December 19851986: 5 January 1986 to 17 December 19861987: 2 January 1987 to 2 December 19871988: 3 January 1988 to 27 December 19881989: 16 March 1989 to 27 December 19891990: 8 January 1990 to 10 December 19901991: 6 January 1991 to 13 December 19911992: 5 February 1992 to 14 December 19921993: 19 January 1993 to 8 December 19931994: 18 January 1994 to 25 December 19941995: 6 January 1995 to 31 December 19951996: 2 January 1996 to 31 December 19961997: 26 January 1997 to 28 December 19971998: 4 January 1998 to 15 December 19981999: 1 January 1999 to 30 December 19992000: 26 January 2000 to 15 December 20002001: 31 January 2001 to 19 December 20012002: 7 January 2002 to 26 December 20022003: 2 January 2003 to 13 December 20032004: 11 January 2004 to 28 December 20042005: 17 January 2005 to 16 December 20052006: 16 February 2006 to 3 December 20062007: 1 January 2007 to 23 December 20072008: 6 January 2008 to 13 December 20082009: 9 January 2009 to 28 December 20092013: 13 January 2013 to 24 November 20132014: 17 February 2014 to 11 December 20141966197619821988199420002006JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Pine Ridge (Round Island) meeting 10 mm (0.39 in).
First to last qualifying date each year at Pine Ridge (Round Island)
YearFirst dateLast date
19661966-02-241966-12-31
19671967-01-011967-12-30
19721972-01-131972-11-25
19731973-01-141973-12-26
19741974-01-071974-11-18
19751975-01-041975-12-19
19761976-01-131976-12-24
19771977-01-131977-12-02
19781978-01-031978-12-26
19791979-01-181979-12-09
19801980-01-031980-12-15
19811981-01-071981-12-24
19821982-02-011982-12-30
19831983-01-031983-12-27
19841984-01-011984-12-12
19851985-01-291985-12-09
19861986-01-051986-12-17
19871987-01-021987-12-02
19881988-01-031988-12-27
19891989-03-161989-12-27
19901990-01-081990-12-10
19911991-01-061991-12-13
19921992-02-051992-12-14
19931993-01-191993-12-08
19941994-01-181994-12-25
19951995-01-061995-12-31
19961996-01-021996-12-31
19971997-01-261997-12-28
19981998-01-041998-12-15
19991999-01-011999-12-30
20002000-01-262000-12-15
20012001-01-312001-12-19
20022002-01-072002-12-26
20032003-01-022003-12-13
20042004-01-112004-12-28
20052005-01-172005-12-16
20062006-02-162006-12-03
20072007-01-012007-12-23
20082008-01-062008-12-13
20092009-01-092009-12-28
20132013-01-132013-11-24
20142014-02-172014-12-11

Every Fixed Threshold

Fixed thresholds at Pine Ridge (Round Island)
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain4238199820
25 mm (0.98 in): Days with 25 mm or more rain421620043
50 mm (1.97 in): Days with 50 mm or more rain26620002
100 mm (3.94 in): Days with 100 mm or more rain3119761

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1966.

Download the Data

  • Data for Pine Ridge (Round Island) 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 2026-10-15 (15 October 2026). Threshold counts are computed by this site.

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