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Data as of 2025-12-31
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Built 2026-10-19 (19 October 2026)

Haisyn Threshold Days by Year (UPM00033577)

9 fixed thresholds counted per year at Haisyn (UPM00033577): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Haisyn Thresholds

  • Haisyn: days with 10 mm (0.39 in) or more of precipitation in 25 years, most in 1966 with 22.
  • Haisyn: days with 25 mm (0.98 in) or more of precipitation in 25 years, most in 1966 with 6.
  • Haisyn: days with 50 mm (1.97 in) or more of precipitation in 6 years, most in 1989 with 2.
  • Haisyn: days with a maximum temperature at or above 30 C (86 F) in 1 years, most in 2015 with 35.
  • 9 fixed thresholds have at least one qualifying day at Haisyn.
25 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Haisyn Days per year at Haisyn with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 22 in 1966. 01020301960: 211966: 221967: 131968: 121969: 151970: 151971: 191972: 161973: 121974: 191975: 101977: 151978: 221979: 171980: 271981: 181982: 101983: 81984: 171985: 201986: 151987: 151988: 141989: 191990: 16196019681971197419781981198419871990
Days per year at Haisyn with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 22 in 1966.
Days with 10 mm (0.39 in) or more of precipitation per year at Haisyn
YearDaysDecade average
19602116.6
19662216.6
19671316.6
19681216.6
19691516.6
19701516.1
19711916.1
19721616.1
19731216.1
19741916.1
19751016.1
19771516.1
19782216.1
19791716.1
19802716.3
19811816.3
19821016.3
1983816.3
19841716.3
19852016.3
19861516.3
19871516.3
19881416.3
19891916.3
19901616
First to last qualifying date each year at Haisyn For each year, a bar from the first to the last day at Haisyn meeting 10 mm (0.39 in). 1960: 19 January 1960 to 29 December 19601966: 13 January 1966 to 20 November 19661967: 7 January 1967 to 12 December 19671968: 26 January 1968 to 4 October 19681969: 10 February 1969 to 17 December 19691970: 18 January 1970 to 1 December 19701971: 3 January 1971 to 17 December 19711972: 25 April 1972 to 22 October 19721973: 18 February 1973 to 27 December 19731974: 7 May 1974 to 27 November 19741975: 19 April 1975 to 19 October 19751977: 30 January 1977 to 10 September 19771978: 30 January 1978 to 1 December 19781979: 16 January 1979 to 13 November 19791980: 4 January 1980 to 12 December 19801981: 6 January 1981 to 26 December 19811982: 26 February 1982 to 31 July 19821983: 5 April 1983 to 29 November 19831984: 21 January 1984 to 28 December 19841985: 3 January 1985 to 25 November 19851986: 1 January 1986 to 20 December 19861987: 11 January 1987 to 30 November 19871988: 2 March 1988 to 7 December 19881989: 27 February 1989 to 18 December 19891990: 14 February 1990 to 16 December 19901960196919731978198219861990JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Haisyn meeting 10 mm (0.39 in).
First to last qualifying date each year at Haisyn
YearFirst dateLast date
19601960-01-191960-12-29
19661966-01-131966-11-20
19671967-01-071967-12-12
19681968-01-261968-10-04
19691969-02-101969-12-17
19701970-01-181970-12-01
19711971-01-031971-12-17
19721972-04-251972-10-22
19731973-02-181973-12-27
19741974-05-071974-11-27
19751975-04-191975-10-19
19771977-01-301977-09-10
19781978-01-301978-12-01
19791979-01-161979-11-13
19801980-01-041980-12-12
19811981-01-061981-12-26
19821982-02-261982-07-31
19831983-04-051983-11-29
19841984-01-211984-12-28
19851985-01-031985-11-25
19861986-01-011986-12-20
19871987-01-111987-11-30
19881988-03-021988-12-07
19891989-02-271989-12-18
19901990-02-141990-12-16

Every Fixed Threshold

Fixed thresholds at Haisyn
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
30 C (86 F): Days135201535
35 C (95 F): Days1420154
90 F (32.2 C): Days120201520
0 C (32 F): Ice days (max114201514
0 C (32 F): Frost days (min10n/a92
-10 C (14 F): Days with min10n/a5
10 mm (0.39 in): Days with 10 mm or more rain2522196616
25 mm (0.98 in): Days with 25 mm or more rain25619662
50 mm (1.97 in): Days with 50 mm or more rain6219892

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 2015.

Download the Data

  • Data for Haisyn 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).