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Built 2026-10-19 (19 October 2026)

Lay Dam Threshold Days by Year (USC00014603)

5 fixed thresholds counted per year at Lay Dam (USC00014603): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Lay Dam Thresholds

  • Lay Dam: days with 10 mm (0.39 in) or more of precipitation in 50 years, most in 1975 with 59.
  • Lay Dam: days with 25 mm (0.98 in) or more of precipitation in 50 years, most in 1983 with 26.
  • Lay Dam: days with 50 mm (1.97 in) or more of precipitation in 49 years, most in 1983 with 9.
  • Lay Dam: days with 100 mm (3.94 in) or more of precipitation in 15 years, most in 1979 with 5.
  • 5 fixed thresholds have at least one qualifying day at Lay Dam.
50 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Lay Dam Days per year at Lay Dam with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 59 in 1975. 02040601937: 441938: 361939: 491940: 421941: 371942: 351943: 321944: 381945: 421946: 481947: 461948: 541949: 441950: 361951: 451952: 341953: 511954: 281955: 451957: 321958: 381959: 441960: 371962: 411963: 411964: 401965: 381969: 321970: 471971: 471972: 501973: 471974: 491975: 591976: 441977: 431978: 341979: 501980: 451981: 351982: 401983: 461984: 471985: 371986: 301987: 311988: 411989: 551990: 311991: 441937194219471952195819641972197719821987
Days per year at Lay Dam with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 59 in 1975.
Days with 10 mm (0.39 in) or more of precipitation per year at Lay Dam
YearDaysDecade average
19374443
19383643
19394943
19404241.8
19413741.8
19423541.8
19433241.8
19443841.8
19454241.8
19464841.8
19474641.8
19485441.8
19494441.8
19503639.2
19514539.2
19523439.2
19535139.2
19542839.2
19554539.2
19573239.2
19583839.2
19594439.2
19603738.2
19624138.2
19634138.2
19644038.2
19653838.2
19693238.2
19704747
19714747
19725047
19734747
19744947
19755947
19764447
19774347
19783447
19795047
19804540.7
19813540.7
19824040.7
19834640.7
19844740.7
19853740.7
19863040.7
19873140.7
19884140.7
19895540.7
19903137.5
19914437.5
First to last qualifying date each year at Lay Dam For each year, a bar from the first to the last day at Lay Dam meeting 10 mm (0.39 in). 1937: 1 January 1937 to 23 December 19371938: 6 January 1938 to 27 December 19381939: 5 January 1939 to 26 December 19391940: 12 January 1940 to 28 December 19401941: 3 February 1941 to 26 December 19411942: 3 January 1942 to 29 December 19421943: 8 January 1943 to 26 December 19431944: 3 January 1944 to 7 December 19441945: 1 January 1945 to 31 December 19451946: 6 January 1946 to 31 December 19461947: 1 January 1947 to 16 December 19471948: 2 January 1948 to 30 December 19481949: 5 January 1949 to 23 December 19491950: 7 January 1950 to 29 December 19501951: 4 January 1951 to 26 December 19511952: 5 January 1952 to 31 December 19521953: 8 January 1953 to 29 December 19531954: 16 January 1954 to 29 December 19541955: 1 January 1955 to 19 December 19551957: 25 January 1957 to 26 December 19571958: 21 January 1958 to 24 December 19581959: 9 January 1959 to 18 December 19591960: 3 January 1960 to 21 December 19601962: 1 January 1962 to 25 December 19621963: 12 January 1963 to 23 December 19631964: 1 January 1964 to 27 December 19641965: 3 January 1965 to 25 December 19651969: 19 January 1969 to 31 December 19691970: 6 January 1970 to 29 December 19701971: 5 January 1971 to 7 December 19711972: 2 January 1972 to 31 December 19721973: 6 January 1973 to 27 December 19731974: 1 January 1974 to 24 December 19741975: 4 January 1975 to 31 December 19751976: 3 January 1976 to 26 December 19761977: 3 January 1977 to 30 December 19771978: 6 January 1978 to 30 December 19781979: 1 January 1979 to 30 December 19791980: 4 January 1980 to 24 December 19801981: 7 January 1981 to 29 December 19811982: 2 February 1982 to 27 December 19821983: 1 January 1983 to 27 December 19831984: 9 January 1984 to 4 December 19841985: 1 January 1985 to 31 December 19851986: 4 February 1986 to 10 December 19861987: 17 January 1987 to 31 December 19871988: 7 January 1988 to 31 December 19881989: 12 January 1989 to 19 December 19891990: 5 January 1990 to 24 December 19901991: 4 January 1991 to 29 December 199119371944195119591970197719841991JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Lay Dam meeting 10 mm (0.39 in).
First to last qualifying date each year at Lay Dam
YearFirst dateLast date
19371937-01-011937-12-23
19381938-01-061938-12-27
19391939-01-051939-12-26
19401940-01-121940-12-28
19411941-02-031941-12-26
19421942-01-031942-12-29
19431943-01-081943-12-26
19441944-01-031944-12-07
19451945-01-011945-12-31
19461946-01-061946-12-31
19471947-01-011947-12-16
19481948-01-021948-12-30
19491949-01-051949-12-23
19501950-01-071950-12-29
19511951-01-041951-12-26
19521952-01-051952-12-31
19531953-01-081953-12-29
19541954-01-161954-12-29
19551955-01-011955-12-19
19571957-01-251957-12-26
19581958-01-211958-12-24
19591959-01-091959-12-18
19601960-01-031960-12-21
19621962-01-011962-12-25
19631963-01-121963-12-23
19641964-01-011964-12-27
19651965-01-031965-12-25
19691969-01-191969-12-31
19701970-01-061970-12-29
19711971-01-051971-12-07
19721972-01-021972-12-31
19731973-01-061973-12-27
19741974-01-011974-12-24
19751975-01-041975-12-31
19761976-01-031976-12-26
19771977-01-031977-12-30
19781978-01-061978-12-30
19791979-01-011979-12-30
19801980-01-041980-12-24
19811981-01-071981-12-29
19821982-02-021982-12-27
19831983-01-011983-12-27
19841984-01-091984-12-04
19851985-01-011985-12-31
19861986-02-041986-12-10
19871987-01-171987-12-31
19881988-01-071988-12-31
19891989-01-121989-12-19
19901990-01-051990-12-24
19911991-01-041991-12-29

Every Fixed Threshold

Fixed thresholds at Lay Dam
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain5059197544
25 mm (0.98 in): Days with 25 mm or more rain5026198313
50 mm (1.97 in): Days with 50 mm or more rain49919832
100 mm (3.94 in): Days with 100 mm or more rain15519791
200 mm (7.87 in): Days with 200 mm or more rain2119401

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1937.

Download the Data

  • Data for Lay Dam 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).