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Built 2026-10-19 (19 October 2026)

Keahua 410 Threshold Days by Year

4 fixed thresholds counted per year at Keahua 410 (USC00513910): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Keahua 410 Thresholds

  • Keahua 410: days with 10 mm (0.39 in) or more of precipitation in 70 years, most in 1989 with 33.
  • Keahua 410: days with 25 mm (0.98 in) or more of precipitation in 69 years, most in 1989 with 13.
  • Keahua 410: days with 50 mm (1.97 in) or more of precipitation in 53 years, most in 1988 with 5.
  • Keahua 410: days with 100 mm (3.94 in) or more of precipitation in 13 years, most in 1950 with 1.
  • 4 fixed thresholds have at least one qualifying day at Keahua 410.
70 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Keahua 410 Days per year at Keahua 410 with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 33 in 1989. 0102030401943: 131944: 91945: 111946: 161947: 91948: 161949: 91950: 281951: 141952: 61953: 61954: 131955: 151956: 161957: 71958: 131959: 151960: 111961: 131962: 71963: 171964: 101965: 181966: 111967: 161968: 251969: 151970: 161971: 151972: 121973: 91974: 171975: 61976: 81977: 91978: 131979: 181980: 161981: 131982: 261983: 41984: 71986: 201987: 211988: 161989: 331990: 241991: 121992: 211993: 141994: 201995: 141996: 241997: 311998: 61999: 152000: 92001: 62002: 142003: 102004: 202005: 152006: 92008: 32010: 42011: 62012: 32013: 132014: 282015: 191943195019571964197119781986199320002008
Days per year at Keahua 410 with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 33 in 1989.
Days with 10 mm (0.39 in) or more of precipitation per year at Keahua 410
YearDaysDecade average
19431311.9
1944911.9
19451111.9
19461611.9
1947911.9
19481611.9
1949911.9
19502813.3
19511413.3
1952613.3
1953613.3
19541313.3
19551513.3
19561613.3
1957713.3
19581313.3
19591513.3
19601114.3
19611314.3
1962714.3
19631714.3
19641014.3
19651814.3
19661114.3
19671614.3
19682514.3
19691514.3
19701612.3
19711512.3
19721212.3
1973912.3
19741712.3
1975612.3
1976812.3
1977912.3
19781312.3
19791812.3
19801617.3
19811317.3
19822617.3
1983417.3
1984717.3
19862017.3
19872117.3
19881617.3
19893317.3
19902418.1
19911218.1
19922118.1
19931418.1
19942018.1
19951418.1
19962418.1
19973118.1
1998618.1
19991518.1
2000910.8
2001610.8
20021410.8
20031010.8
20042010.8
20051510.8
2006910.8
2008310.8
2010412.2
2011612.2
2012312.2
20131312.2
20142812.2
20151912.2
First to last qualifying date each year at Keahua 410 For each year, a bar from the first to the last day at Keahua 410 meeting 10 mm (0.39 in). 1943: 3 January 1943 to 4 December 19431944: 13 February 1944 to 26 December 19441945: 13 March 1945 to 7 December 19451946: 17 January 1946 to 25 December 19461947: 2 January 1947 to 19 December 19471948: 24 January 1948 to 24 December 19481949: 8 January 1949 to 12 November 19491950: 11 January 1950 to 30 December 19501951: 16 January 1951 to 12 December 19511952: 1 January 1952 to 5 December 19521953: 20 February 1953 to 29 December 19531954: 26 February 1954 to 29 December 19541955: 22 January 1955 to 21 December 19551956: 13 January 1956 to 7 December 19561957: 25 January 1957 to 7 December 19571958: 24 January 1958 to 30 December 19581959: 9 January 1959 to 18 December 19591960: 13 February 1960 to 28 December 19601961: 2 January 1961 to 3 November 19611962: 8 January 1962 to 18 December 19621963: 8 January 1963 to 10 November 19631964: 8 January 1964 to 22 December 19641965: 14 January 1965 to 7 December 19651966: 6 January 1966 to 19 December 19661967: 12 January 1967 to 29 December 19671968: 17 January 1968 to 29 December 19681969: 4 January 1969 to 30 December 19691970: 4 January 1970 to 28 December 19701971: 5 January 1971 to 24 April 19711972: 5 February 1972 to 19 December 19721973: 7 January 1973 to 10 December 19731974: 4 January 1974 to 23 November 19741975: 12 January 1975 to 25 November 19751976: 16 January 1976 to 25 November 19761977: 21 January 1977 to 18 December 19771978: 1 January 1978 to 7 December 19781979: 10 January 1979 to 25 December 19791980: 9 January 1980 to 15 December 19801981: 29 March 1981 to 26 December 19811982: 8 January 1982 to 25 December 19821983: 31 January 1983 to 27 December 19831984: 6 January 1984 to 27 November 19841986: 7 January 1986 to 6 December 19861987: 14 January 1987 to 20 December 19871988: 2 January 1988 to 31 December 19881989: 8 January 1989 to 21 December 19891990: 1 January 1990 to 25 December 19901991: 28 January 1991 to 26 December 19911992: 15 January 1992 to 31 December 19921993: 1 January 1993 to 24 November 19931994: 25 January 1994 to 11 December 19941995: 13 January 1995 to 31 December 19951996: 1 January 1996 to 28 December 19961997: 1 January 1997 to 31 December 19971998: 6 January 1998 to 15 November 19981999: 1 January 1999 to 27 December 19992000: 16 January 2000 to 9 November 20002001: 28 October 2001 to 14 December 20012002: 19 January 2002 to 11 December 20022003: 31 January 2003 to 9 December 20032004: 2 January 2004 to 29 December 20042005: 4 January 2005 to 28 November 20052006: 19 March 2006 to 2 December 20062008: 29 January 2008 to 30 December 20082010: 30 January 2010 to 26 December 20102011: 10 January 2011 to 6 May 20112012: 7 March 2012 to 9 March 20122013: 2 January 2013 to 29 December 20132014: 3 January 2014 to 31 December 20142015: 3 January 2015 to 20 December 201519431952196119701979198919982008JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Keahua 410 meeting 10 mm (0.39 in).
First to last qualifying date each year at Keahua 410
YearFirst dateLast date
19431943-01-031943-12-04
19441944-02-131944-12-26
19451945-03-131945-12-07
19461946-01-171946-12-25
19471947-01-021947-12-19
19481948-01-241948-12-24
19491949-01-081949-11-12
19501950-01-111950-12-30
19511951-01-161951-12-12
19521952-01-011952-12-05
19531953-02-201953-12-29
19541954-02-261954-12-29
19551955-01-221955-12-21
19561956-01-131956-12-07
19571957-01-251957-12-07
19581958-01-241958-12-30
19591959-01-091959-12-18
19601960-02-131960-12-28
19611961-01-021961-11-03
19621962-01-081962-12-18
19631963-01-081963-11-10
19641964-01-081964-12-22
19651965-01-141965-12-07
19661966-01-061966-12-19
19671967-01-121967-12-29
19681968-01-171968-12-29
19691969-01-041969-12-30
19701970-01-041970-12-28
19711971-01-051971-04-24
19721972-02-051972-12-19
19731973-01-071973-12-10
19741974-01-041974-11-23
19751975-01-121975-11-25
19761976-01-161976-11-25
19771977-01-211977-12-18
19781978-01-011978-12-07
19791979-01-101979-12-25
19801980-01-091980-12-15
19811981-03-291981-12-26
19821982-01-081982-12-25
19831983-01-311983-12-27
19841984-01-061984-11-27
19861986-01-071986-12-06
19871987-01-141987-12-20
19881988-01-021988-12-31
19891989-01-081989-12-21
19901990-01-011990-12-25
19911991-01-281991-12-26
19921992-01-151992-12-31
19931993-01-011993-11-24
19941994-01-251994-12-11
19951995-01-131995-12-31
19961996-01-011996-12-28
19971997-01-011997-12-31
19981998-01-061998-11-15
19991999-01-011999-12-27
20002000-01-162000-11-09
20012001-10-282001-12-14
20022002-01-192002-12-11
20032003-01-312003-12-09
20042004-01-022004-12-29
20052005-01-042005-11-28
20062006-03-192006-12-02
20082008-01-292008-12-30
20102010-01-302010-12-26
20112011-01-102011-05-06
20122012-03-072012-03-09
20132013-01-022013-12-29
20142014-01-032014-12-31
20152015-01-032015-12-20

Every Fixed Threshold

Fixed thresholds at Keahua 410
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain7033198919
25 mm (0.98 in): Days with 25 mm or more rain691319896
50 mm (1.97 in): Days with 50 mm or more rain53519882
100 mm (3.94 in): Days with 100 mm or more rain13119501

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1943.

Download the Data

  • Data for Keahua 410 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).