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Built 2026-10-19 (19 October 2026)

Avalon Threshold Days by Year (USC00410440)

5 fixed thresholds counted per year at Avalon (USC00410440): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Avalon Thresholds

  • Avalon: days with 10 mm (0.39 in) or more of precipitation in 35 years, most in 1973 with 43.
  • Avalon: days with 25 mm (0.98 in) or more of precipitation in 35 years, most in 1973 with 18.
  • Avalon: days with 50 mm (1.97 in) or more of precipitation in 33 years, most in 1965 with 7.
  • Avalon: days with 100 mm (3.94 in) or more of precipitation in 16 years, most in 1967 with 2.
  • 5 fixed thresholds have at least one qualifying day at Avalon.
35 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Avalon Days per year at Avalon with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 43 in 1973. 02040601965: 271966: 271967: 331968: 371969: 351970: 331971: 301972: 221973: 431974: 381975: 281976: 321977: 251978: 221979: 401980: 251981: 271982: 291983: 271984: 301985: 271986: 331987: 291988: 211989: 291991: 341992: 371993: 281994: 351995: 231996: 301997: 341998: 341999: 192000: 28196519691973197719811985198919941998
Days per year at Avalon with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 43 in 1973.
Days with 10 mm (0.39 in) or more of precipitation per year at Avalon
YearDaysDecade average
19652731.8
19662731.8
19673331.8
19683731.8
19693531.8
19703331.3
19713031.3
19722231.3
19734331.3
19743831.3
19752831.3
19763231.3
19772531.3
19782231.3
19794031.3
19802527.7
19812727.7
19822927.7
19832727.7
19843027.7
19852727.7
19863327.7
19872927.7
19882127.7
19892927.7
19913430.4
19923730.4
19932830.4
19943530.4
19952330.4
19963030.4
19973430.4
19983430.4
19991930.4
20002828
First to last qualifying date each year at Avalon For each year, a bar from the first to the last day at Avalon meeting 10 mm (0.39 in). 1965: 3 January 1965 to 19 December 19651966: 29 January 1966 to 28 December 19661967: 20 February 1967 to 31 December 19671968: 9 January 1968 to 21 December 19681969: 1 February 1969 to 29 December 19691970: 5 January 1970 to 14 November 19701971: 3 January 1971 to 10 December 19711972: 1 January 1972 to 15 December 19721973: 3 January 1973 to 24 December 19731974: 10 January 1974 to 31 December 19741975: 12 January 1975 to 25 December 19751976: 8 March 1976 to 11 December 19761977: 3 January 1977 to 30 November 19771978: 1 February 1978 to 31 December 19781979: 7 January 1979 to 24 December 19791980: 20 January 1980 to 9 December 19801981: 9 January 1981 to 30 November 19811982: 23 January 1982 to 27 December 19821983: 1 February 1983 to 27 November 19831984: 9 January 1984 to 30 December 19841985: 1 January 1985 to 12 December 19851986: 3 February 1986 to 22 December 19861987: 9 January 1987 to 26 December 19871988: 18 February 1988 to 28 December 19881989: 13 January 1989 to 31 December 19891991: 9 January 1991 to 27 December 19911992: 11 January 1992 to 19 December 19921993: 3 January 1993 to 22 December 19931994: 11 January 1994 to 16 December 19941995: 3 January 1995 to 18 December 19951996: 18 January 1996 to 15 December 19961997: 7 January 1997 to 24 December 19971998: 6 January 1998 to 19 December 19981999: 29 January 1999 to 12 December 19992000: 8 January 2000 to 28 December 20001965197019751980198519911996JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Avalon meeting 10 mm (0.39 in).
First to last qualifying date each year at Avalon
YearFirst dateLast date
19651965-01-031965-12-19
19661966-01-291966-12-28
19671967-02-201967-12-31
19681968-01-091968-12-21
19691969-02-011969-12-29
19701970-01-051970-11-14
19711971-01-031971-12-10
19721972-01-011972-12-15
19731973-01-031973-12-24
19741974-01-101974-12-31
19751975-01-121975-12-25
19761976-03-081976-12-11
19771977-01-031977-11-30
19781978-02-011978-12-31
19791979-01-071979-12-24
19801980-01-201980-12-09
19811981-01-091981-11-30
19821982-01-231982-12-27
19831983-02-011983-11-27
19841984-01-091984-12-30
19851985-01-011985-12-12
19861986-02-031986-12-22
19871987-01-091987-12-26
19881988-02-181988-12-28
19891989-01-131989-12-31
19911991-01-091991-12-27
19921992-01-111992-12-19
19931993-01-031993-12-22
19941994-01-111994-12-16
19951995-01-031995-12-18
19961996-01-181996-12-15
19971997-01-071997-12-24
19981998-01-061998-12-19
19991999-01-291999-12-12
20002000-01-082000-12-28

Every Fixed Threshold

Fixed thresholds at Avalon
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain3543197328
25 mm (0.98 in): Days with 25 mm or more rain3518197310
50 mm (1.97 in): Days with 50 mm or more rain33719653
100 mm (3.94 in): Days with 100 mm or more rain16219672
10 cm (3.9 in): Days with 10 cm or more snowfall1119831

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1965.

Download the Data

  • Data for Avalon 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).