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

The Valleys Threshold Days by Year (SF001827300)

5 fixed thresholds counted per year at The Valleys (SF001827300): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for The Valleys Thresholds

  • The Valleys: days with 10 mm (0.39 in) or more of precipitation in 56 years, most in 1943 with 42.
  • The Valleys: days with 25 mm (0.98 in) or more of precipitation in 56 years, most in 1956 with 19.
  • The Valleys: days with 50 mm (1.97 in) or more of precipitation in 55 years, most in 1987 with 10.
  • The Valleys: days with 100 mm (3.94 in) or more of precipitation in 33 years, most in 1963 with 5.
  • 5 fixed thresholds have at least one qualifying day at The Valleys.
56 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at The Valleys Days per year at The Valleys with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 42 in 1943. 02040601938: 201942: 291943: 421944: 191945: 201946: 161947: 261948: 251949: 221950: 291951: 161952: 201954: 251955: 351956: 361957: 371958: 351959: 251960: 381961: 341962: 251963: 371964: 251965: 311966: 261967: 261968: 221969: 331970: 271971: 331972: 271973: 261974: 271975: 221976: 391977: 371978: 411979: 231980: 261981: 261982: 291983: 311984: 331985: 351986: 311987: 341988: 391989: 301990: 231991: 361992: 151993: 251994: 191995: 391996: 311997: 371938194719541960196619721978198419901996
Days per year at The Valleys with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 42 in 1943.
Days with 10 mm (0.39 in) or more of precipitation per year at The Valleys
YearDaysDecade average
19382020
19422924.9
19434224.9
19441924.9
19452024.9
19461624.9
19472624.9
19482524.9
19492224.9
19502928.7
19511628.7
19522028.7
19542528.7
19553528.7
19563628.7
19573728.7
19583528.7
19592528.7
19603829.7
19613429.7
19622529.7
19633729.7
19642529.7
19653129.7
19662629.7
19672629.7
19682229.7
19693329.7
19702730.2
19713330.2
19722730.2
19732630.2
19742730.2
19752230.2
19763930.2
19773730.2
19784130.2
19792330.2
19802631.4
19812631.4
19822931.4
19833131.4
19843331.4
19853531.4
19863131.4
19873431.4
19883931.4
19893031.4
19902328.1
19913628.1
19921528.1
19932528.1
19941928.1
19953928.1
19963128.1
19973728.1
First to last qualifying date each year at The Valleys For each year, a bar from the first to the last day at The Valleys meeting 10 mm (0.39 in). 1938: 21 January 1938 to 10 December 19381942: 1 January 1942 to 16 December 19421943: 14 January 1943 to 31 December 19431944: 4 January 1944 to 31 December 19441945: 1 January 1945 to 15 October 19451946: 8 January 1946 to 23 December 19461947: 2 January 1947 to 15 December 19471948: 12 January 1948 to 18 November 19481949: 31 January 1949 to 27 December 19491950: 8 January 1950 to 30 December 19501951: 11 January 1951 to 25 December 19511952: 7 January 1952 to 13 December 19521954: 4 January 1954 to 5 December 19541955: 4 January 1955 to 18 December 19551956: 13 January 1956 to 23 December 19561957: 7 January 1957 to 16 December 19571958: 2 January 1958 to 20 December 19581959: 1 January 1959 to 17 December 19591960: 17 January 1960 to 30 December 19601961: 17 January 1961 to 25 December 19611962: 5 January 1962 to 20 December 19621963: 5 January 1963 to 13 December 19631964: 9 January 1964 to 1 December 19641965: 5 January 1965 to 28 December 19651966: 8 January 1966 to 15 December 19661967: 11 January 1967 to 25 December 19671968: 20 January 1968 to 30 December 19681969: 27 January 1969 to 28 December 19691970: 14 January 1970 to 18 December 19701971: 1 January 1971 to 13 December 19711972: 10 January 1972 to 21 December 19721973: 5 January 1973 to 23 December 19731974: 16 January 1974 to 25 December 19741975: 11 January 1975 to 25 December 19751976: 7 January 1976 to 31 December 19761977: 4 January 1977 to 30 December 19771978: 6 January 1978 to 23 December 19781979: 2 January 1979 to 26 December 19791980: 5 January 1980 to 31 December 19801981: 14 January 1981 to 16 December 19811982: 2 January 1982 to 27 December 19821983: 1 January 1983 to 17 December 19831984: 7 January 1984 to 23 December 19841985: 4 January 1985 to 30 December 19851986: 15 January 1986 to 29 December 19861987: 7 January 1987 to 16 December 19871988: 6 January 1988 to 30 December 19881989: 6 January 1989 to 30 December 19891990: 24 January 1990 to 6 December 19901991: 21 January 1991 to 9 December 19911992: 1 March 1992 to 11 December 19921993: 9 January 1993 to 29 December 19931994: 4 February 1994 to 27 December 19941995: 14 January 1995 to 26 December 19951996: 12 January 1996 to 23 December 19961997: 2 January 1997 to 27 November 199719381948195619631970197719841991JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at The Valleys meeting 10 mm (0.39 in).
First to last qualifying date each year at The Valleys
YearFirst dateLast date
19381938-01-211938-12-10
19421942-01-011942-12-16
19431943-01-141943-12-31
19441944-01-041944-12-31
19451945-01-011945-10-15
19461946-01-081946-12-23
19471947-01-021947-12-15
19481948-01-121948-11-18
19491949-01-311949-12-27
19501950-01-081950-12-30
19511951-01-111951-12-25
19521952-01-071952-12-13
19541954-01-041954-12-05
19551955-01-041955-12-18
19561956-01-131956-12-23
19571957-01-071957-12-16
19581958-01-021958-12-20
19591959-01-011959-12-17
19601960-01-171960-12-30
19611961-01-171961-12-25
19621962-01-051962-12-20
19631963-01-051963-12-13
19641964-01-091964-12-01
19651965-01-051965-12-28
19661966-01-081966-12-15
19671967-01-111967-12-25
19681968-01-201968-12-30
19691969-01-271969-12-28
19701970-01-141970-12-18
19711971-01-011971-12-13
19721972-01-101972-12-21
19731973-01-051973-12-23
19741974-01-161974-12-25
19751975-01-111975-12-25
19761976-01-071976-12-31
19771977-01-041977-12-30
19781978-01-061978-12-23
19791979-01-021979-12-26
19801980-01-051980-12-31
19811981-01-141981-12-16
19821982-01-021982-12-27
19831983-01-011983-12-17
19841984-01-071984-12-23
19851985-01-041985-12-30
19861986-01-151986-12-29
19871987-01-071987-12-16
19881988-01-061988-12-30
19891989-01-061989-12-30
19901990-01-241990-12-06
19911991-01-211991-12-09
19921992-03-011992-12-11
19931993-01-091993-12-29
19941994-02-041994-12-27
19951995-01-141995-12-26
19961996-01-121996-12-23
19971997-01-021997-11-27

Every Fixed Threshold

Fixed thresholds at The Valleys
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain5642194337
25 mm (0.98 in): Days with 25 mm or more rain5619195615
50 mm (1.97 in): Days with 50 mm or more rain551019876
100 mm (3.94 in): Days with 100 mm or more rain33519631
200 mm (7.87 in): Days with 200 mm or more rain5119501

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1938.

Download the Data

  • Data for The Valleys 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).