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Data as of 2026-10-17
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Built 2026-10-19 (19 October 2026)

Katsuura Threshold Days by Year (JA000047674)

11 fixed thresholds counted per year at Katsuura (JA000047674): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Katsuura Thresholds

  • Katsuura: days with 10 mm (0.39 in) or more of precipitation in 56 years, most in 1954 with 73.
  • Katsuura: days with 25 mm (0.98 in) or more of precipitation in 56 years, most in 1954 with 35.
  • Katsuura: days with 50 mm (1.97 in) or more of precipitation in 56 years, most in 1951 with 15.
  • Katsuura: days with a maximum temperature at or above 30 C (86 F) in 50 years, most in 2017 with 27.
  • 11 fixed thresholds have at least one qualifying day at Katsuura.
50 years with a qualifying day
Days at or above 30 C (86 F) per year at Katsuura Days per year at Katsuura with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 27 in 2017. 01020301951: 101952: 181953: 131954: 181955: 161956: 171957: 11959: 31960: 31961: 171962: 101963: 21964: 121965: 81966: 61967: 121968: 21969: 71970: 41971: 121972: 31973: 61974: 41975: 141977: 71978: 201979: 131980: 11981: 91982: 31983: 121984: 211985: 141986: 81987: 51988: 71989: 41995: 161996: 31997: 71999: 242000: 182005: 52007: 152008: 202011: 222017: 272022: 222025: 242026: 161951195619621967197219781983198819992011
Days per year at Katsuura with a maximum temperature at or above 30 C (86 F), with the decade average as a line. The most was 27 in 2017.
Days at or above 30 C (86 F) per year at Katsuura
YearDaysDecade average
19511012
19521812
19531312
19541812
19551612
19561712
1957112
1959312
196037.9
1961177.9
1962107.9
196327.9
1964127.9
196587.9
196667.9
1967127.9
196827.9
196977.9
197049.2
1971129.2
197239.2
197369.2
197449.2
1975149.2
197779.2
1978209.2
1979139.2
198018.4
198198.4
198238.4
1983128.4
1984218.4
1985148.4
198688.4
198758.4
198878.4
198948.4
19951612.5
1996312.5
1997712.5
19992412.5
20001814.5
2005514.5
20071514.5
20082014.5
20112224.5
20172724.5
20222220.7
20252420.7
20261620.7
First to last qualifying date each year at Katsuura For each year, a bar from the first to the last day at Katsuura meeting 30 C (86 F). 1951: 30 July 1951 to 27 August 19511952: 2 August 1952 to 12 September 19521953: 24 July 1953 to 24 August 19531954: 6 August 1954 to 12 September 19541955: 13 July 1955 to 7 September 19551956: 22 July 1956 to 7 September 19561957: 19 August 1957 to 19 August 19571959: 25 July 1959 to 30 August 19591960: 2 August 1960 to 10 August 19601961: 11 July 1961 to 5 September 19611962: 23 July 1962 to 16 September 19621963: 18 July 1963 to 16 August 19631964: 3 August 1964 to 10 September 19641965: 1 August 1965 to 24 August 19651966: 5 August 1966 to 3 September 19661967: 16 July 1967 to 13 September 19671968: 21 August 1968 to 22 August 19681969: 7 August 1969 to 16 September 19691970: 20 July 1970 to 13 September 19701971: 31 July 1971 to 30 August 19711972: 4 August 1972 to 6 August 19721973: 8 August 1973 to 20 August 19731974: 2 August 1974 to 23 August 19741975: 25 July 1975 to 20 September 19751977: 14 July 1977 to 6 August 19771978: 5 July 1978 to 31 August 19781979: 29 July 1979 to 5 September 19791980: 11 September 1980 to 11 September 19801981: 22 July 1981 to 21 August 19811982: 25 August 1982 to 1 September 19821983: 25 July 1983 to 6 September 19831984: 17 July 1984 to 20 August 19841985: 26 July 1985 to 20 September 19851986: 19 July 1986 to 5 September 19861987: 12 August 1987 to 10 September 19871988: 9 August 1988 to 16 September 19881989: 21 August 1989 to 24 August 19891995: 13 July 1995 to 1 September 19951996: 5 August 1996 to 2 September 19961997: 21 August 1997 to 19 September 19971999: 27 July 1999 to 21 September 19992000: 20 July 2000 to 17 September 20002005: 19 August 2005 to 23 September 20052007: 27 July 2007 to 5 September 20072008: 19 July 2008 to 2 September 20082011: 29 June 2011 to 18 September 20112017: 11 July 2017 to 30 August 20172022: 28 July 2022 to 19 September 20222025: 4 July 2025 to 21 September 20252026: 29 May 2026 to 26 August 202619511959196619731981198820052026JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Katsuura meeting 30 C (86 F).
First to last qualifying date each year at Katsuura
YearFirst dateLast date
19511951-07-301951-08-27
19521952-08-021952-09-12
19531953-07-241953-08-24
19541954-08-061954-09-12
19551955-07-131955-09-07
19561956-07-221956-09-07
19571957-08-191957-08-19
19591959-07-251959-08-30
19601960-08-021960-08-10
19611961-07-111961-09-05
19621962-07-231962-09-16
19631963-07-181963-08-16
19641964-08-031964-09-10
19651965-08-011965-08-24
19661966-08-051966-09-03
19671967-07-161967-09-13
19681968-08-211968-08-22
19691969-08-071969-09-16
19701970-07-201970-09-13
19711971-07-311971-08-30
19721972-08-041972-08-06
19731973-08-081973-08-20
19741974-08-021974-08-23
19751975-07-251975-09-20
19771977-07-141977-08-06
19781978-07-051978-08-31
19791979-07-291979-09-05
19801980-09-111980-09-11
19811981-07-221981-08-21
19821982-08-251982-09-01
19831983-07-251983-09-06
19841984-07-171984-08-20
19851985-07-261985-09-20
19861986-07-191986-09-05
19871987-08-121987-09-10
19881988-08-091988-09-16
19891989-08-211989-08-24
19951995-07-131995-09-01
19961996-08-051996-09-02
19971997-08-211997-09-19
19991999-07-271999-09-21
20002000-07-202000-09-17
20052005-08-192005-09-23
20072007-07-272007-09-05
20082008-07-192008-09-02
20112011-06-292011-09-18
20172017-07-112017-08-30
20222022-07-282022-09-19
20252025-07-042025-09-21
20262026-05-292026-08-26

Every Fixed Threshold

Fixed thresholds at Katsuura
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days5027201716
90 F (32.2 C): Days20419562
0 C (32 F): Ice days (max1119671
0 C (32 F): Frost days (min414019843
20 C (68 F): Tropical nights (min411132025101
25 C (77 F): Days with min3351202524
10 mm (0.39 in): Days with 10 mm or more rain5673195420
25 mm (0.98 in): Days with 25 mm or more rain5635195413
50 mm (1.97 in): Days with 50 mm or more rain561519517
100 mm (3.94 in): Days with 100 mm or more rain44419714
200 mm (7.87 in): Days with 200 mm or more rain8119562

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1951.

Download the Data

  • Data for Katsuura 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 (2026-10-17).