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

Avon Threshold Days by Year (CA008200200)

7 fixed thresholds counted per year at Avon (CA008200200): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Avon Thresholds

  • Avon: days with 10 mm (0.39 in) or more of precipitation in 31 years, most in 1979 with 66.
  • Avon: days with 25 mm (0.98 in) or more of precipitation in 31 years, most in 1979 with 23.
  • Avon: days with 10 cm (3.9 in) or more of snowfall in 31 years, most in 1952 with 15.
  • Avon: days with 50 mm (1.97 in) or more of precipitation in 27 years, most in 1962 with 7.
  • 7 fixed thresholds have at least one qualifying day at Avon.
31 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Avon Days per year at Avon with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 66 in 1979. 0204060801950: 501951: 471952: 441953: 541954: 521955: 361956: 471957: 441958: 531959: 501960: 401961: 431962: 541964: 461965: 291966: 371967: 551968: 381969: 451970: 461971: 431972: 561975: 401976: 501977: 501978: 321979: 661980: 401981: 551982: 481983: 4719501954195819621967197119771981
Days per year at Avon with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 66 in 1979.
Days with 10 mm (0.39 in) or more of precipitation per year at Avon
YearDaysDecade average
19505047.7
19514747.7
19524447.7
19535447.7
19545247.7
19553647.7
19564747.7
19574447.7
19585347.7
19595047.7
19604043
19614343
19625443
19644643
19652943
19663743
19675543
19683843
19694543
19704647.9
19714347.9
19725647.9
19754047.9
19765047.9
19775047.9
19783247.9
19796647.9
19804047.5
19815547.5
19824847.5
19834747.5
First to last qualifying date each year at Avon For each year, a bar from the first to the last day at Avon meeting 10 mm (0.39 in). 1950: 6 January 1950 to 29 December 19501951: 4 January 1951 to 26 December 19511952: 5 January 1952 to 27 December 19521953: 3 January 1953 to 28 December 19531954: 3 January 1954 to 30 December 19541955: 7 January 1955 to 24 December 19551956: 5 January 1956 to 29 December 19561957: 7 January 1957 to 27 December 19571958: 1 January 1958 to 17 December 19581959: 2 January 1959 to 29 December 19591960: 3 January 1960 to 21 December 19601961: 1 January 1961 to 29 December 19611962: 2 January 1962 to 30 December 19621964: 9 January 1964 to 31 December 19641965: 16 January 1965 to 26 December 19651966: 27 January 1966 to 29 December 19661967: 2 January 1967 to 31 December 19671968: 7 January 1968 to 28 December 19681969: 1 January 1969 to 27 December 19691970: 2 February 1970 to 26 December 19701971: 20 January 1971 to 24 December 19711972: 2 January 1972 to 31 December 19721975: 7 January 1975 to 26 December 19751976: 7 January 1976 to 29 December 19761977: 10 January 1977 to 25 December 19771978: 9 January 1978 to 25 December 19781979: 3 January 1979 to 28 December 19791980: 12 January 1980 to 30 December 19801981: 10 January 1981 to 27 December 19811982: 1 January 1982 to 19 December 19821983: 11 January 1983 to 28 December 198319501954195819621967197119771981JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Avon meeting 10 mm (0.39 in).
First to last qualifying date each year at Avon
YearFirst dateLast date
19501950-01-061950-12-29
19511951-01-041951-12-26
19521952-01-051952-12-27
19531953-01-031953-12-28
19541954-01-031954-12-30
19551955-01-071955-12-24
19561956-01-051956-12-29
19571957-01-071957-12-27
19581958-01-011958-12-17
19591959-01-021959-12-29
19601960-01-031960-12-21
19611961-01-011961-12-29
19621962-01-021962-12-30
19641964-01-091964-12-31
19651965-01-161965-12-26
19661966-01-271966-12-29
19671967-01-021967-12-31
19681968-01-071968-12-28
19691969-01-011969-12-27
19701970-02-021970-12-26
19711971-01-201971-12-24
19721972-01-021972-12-31
19751975-01-071975-12-26
19761976-01-071976-12-29
19771977-01-101977-12-25
19781978-01-091978-12-25
19791979-01-031979-12-28
19801980-01-121980-12-30
19811981-01-101981-12-27
19821982-01-011982-12-19
19831983-01-111983-12-28

Every Fixed Threshold

Fixed thresholds at Avon
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain3166197947
25 mm (0.98 in): Days with 25 mm or more rain3123197919
50 mm (1.97 in): Days with 50 mm or more rain27719625
100 mm (3.94 in): Days with 100 mm or more rain6119501
10 cm (3.9 in): Days with 10 cm or more snowfall311519526
25 cm (9.8 in): Days with 25 cm or more snowfall17419603
50 cm (19.7 in): Days with 50 cm or more snowfall1119611

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1950.

Download the Data

  • Data for Avon 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).