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Built 2026-10-19 (19 October 2026)

Manorkill Threshold Days by Year (USC00305032)

7 fixed thresholds counted per year at Manorkill (USC00305032): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Manorkill Thresholds

  • Manorkill: days with 10 mm (0.39 in) or more of precipitation in 44 years, most in 1951 with 46.
  • Manorkill: days with 25 mm (0.98 in) or more of precipitation in 44 years, most in 1977 with 16.
  • Manorkill: days with 50 mm (1.97 in) or more of precipitation in 32 years, most in 1955 with 4.
  • Manorkill: days with 10 cm (3.9 in) or more of snowfall in 23 years, most in 1961 with 10.
  • 7 fixed thresholds have at least one qualifying day at Manorkill.
44 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Manorkill Days per year at Manorkill with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 46 in 1951. 02040601949: 251950: 351951: 461952: 331953: 401954: 341955: 351956: 321957: 301958: 371959: 291960: 291961: 291962: 231963: 281964: 231965: 251966: 291967: 321968: 291969: 311970: 261971: 301972: 451973: 341974: 351975: 351976: 331977: 371978: 291979: 371980: 161981: 261982: 231983: 291984: 341985: 221986: 331987: 361988: 271990: 341991: 321992: 261993: 35194919541959196419691974197919841990
Days per year at Manorkill with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 46 in 1951.
Days with 10 mm (0.39 in) or more of precipitation per year at Manorkill
YearDaysDecade average
19492525
19503535.1
19514635.1
19523335.1
19534035.1
19543435.1
19553535.1
19563235.1
19573035.1
19583735.1
19592935.1
19602927.8
19612927.8
19622327.8
19632827.8
19642327.8
19652527.8
19662927.8
19673227.8
19682927.8
19693127.8
19702634.1
19713034.1
19724534.1
19733434.1
19743534.1
19753534.1
19763334.1
19773734.1
19782934.1
19793734.1
19801627.3
19812627.3
19822327.3
19832927.3
19843427.3
19852227.3
19863327.3
19873627.3
19882727.3
19903431.8
19913231.8
19922631.8
19933531.8
First to last qualifying date each year at Manorkill For each year, a bar from the first to the last day at Manorkill meeting 10 mm (0.39 in). 1949: 1 January 1949 to 13 December 19491950: 6 January 1950 to 5 December 19501951: 8 January 1951 to 26 December 19511952: 18 January 1952 to 12 December 19521953: 9 January 1953 to 14 December 19531954: 6 January 1954 to 30 December 19541955: 7 February 1955 to 4 December 19551956: 9 January 1956 to 23 December 19561957: 23 January 1957 to 27 December 19571958: 15 January 1958 to 29 November 19581959: 22 January 1959 to 29 December 19591960: 3 January 1960 to 12 December 19601961: 2 January 1961 to 25 November 19611962: 7 January 1962 to 7 December 19621963: 12 January 1963 to 9 December 19631964: 2 January 1964 to 28 December 19641965: 3 January 1965 to 26 December 19651966: 3 January 1966 to 25 December 19661967: 28 January 1967 to 29 December 19671968: 1 March 1968 to 28 December 19681969: 24 January 1969 to 27 December 19691970: 3 February 1970 to 17 December 19701971: 8 February 1971 to 31 December 19711972: 4 February 1972 to 22 December 19721973: 4 January 1973 to 27 December 19731974: 22 January 1974 to 17 December 19741975: 13 January 1975 to 26 December 19751976: 14 January 1976 to 8 December 19761977: 21 February 1977 to 25 December 19771978: 9 January 1978 to 25 December 19781979: 2 January 1979 to 27 November 19791980: 8 March 1980 to 25 November 19801981: 2 February 1981 to 16 December 19811982: 2 February 1982 to 26 September 19821983: 15 January 1983 to 28 November 19831984: 10 January 1984 to 21 December 19841985: 4 March 1985 to 13 December 19851986: 25 January 1986 to 18 December 19861987: 2 January 1987 to 15 December 19871988: 25 January 1988 to 28 December 19881990: 20 January 1990 to 23 December 19901991: 11 January 1991 to 29 December 19911992: 26 March 1992 to 30 December 19921993: 4 January 1993 to 29 December 199319491955196119671973197919851992JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Manorkill meeting 10 mm (0.39 in).
First to last qualifying date each year at Manorkill
YearFirst dateLast date
19491949-01-011949-12-13
19501950-01-061950-12-05
19511951-01-081951-12-26
19521952-01-181952-12-12
19531953-01-091953-12-14
19541954-01-061954-12-30
19551955-02-071955-12-04
19561956-01-091956-12-23
19571957-01-231957-12-27
19581958-01-151958-11-29
19591959-01-221959-12-29
19601960-01-031960-12-12
19611961-01-021961-11-25
19621962-01-071962-12-07
19631963-01-121963-12-09
19641964-01-021964-12-28
19651965-01-031965-12-26
19661966-01-031966-12-25
19671967-01-281967-12-29
19681968-03-011968-12-28
19691969-01-241969-12-27
19701970-02-031970-12-17
19711971-02-081971-12-31
19721972-02-041972-12-22
19731973-01-041973-12-27
19741974-01-221974-12-17
19751975-01-131975-12-26
19761976-01-141976-12-08
19771977-02-211977-12-25
19781978-01-091978-12-25
19791979-01-021979-11-27
19801980-03-081980-11-25
19811981-02-021981-12-16
19821982-02-021982-09-26
19831983-01-151983-11-28
19841984-01-101984-12-21
19851985-03-041985-12-13
19861986-01-251986-12-18
19871987-01-021987-12-15
19881988-01-251988-12-28
19901990-01-201990-12-23
19911991-01-111991-12-29
19921992-03-261992-12-30
19931993-01-041993-12-29

Every Fixed Threshold

Fixed thresholds at Manorkill
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain4446195135
25 mm (0.98 in): Days with 25 mm or more rain441619775
50 mm (1.97 in): Days with 50 mm or more rain32419551
100 mm (3.94 in): Days with 100 mm or more rain4119501
10 cm (3.9 in): Days with 10 cm or more snowfall231019611
25 cm (9.8 in): Days with 25 cm or more snowfall15519691
50 cm (19.7 in): Days with 50 cm or more snowfall3119641

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1949.

Download the Data

  • Data for Manorkill 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).