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Built 2026-10-18 (18 October 2026)

Illavale Threshold Days by Year

5 fixed thresholds counted per year at Illavale (ASN00040557): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Illavale Thresholds

  • Illavale: days with 10 mm (0.39 in) or more of precipitation in 32 years, most in 1956 with 45.
  • Illavale: days with 25 mm (0.98 in) or more of precipitation in 32 years, most in 1956 with 21.
  • Illavale: days with 50 mm (1.97 in) or more of precipitation in 29 years, most in 1956 with 7.
  • Illavale: days with 100 mm (3.94 in) or more of precipitation in 8 years, most in 1956 with 3.
  • 5 fixed thresholds have at least one qualifying day at Illavale.
32 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Illavale Days per year at Illavale with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 45 in 1956. 02040601954: 311956: 451957: 151958: 331959: 391960: 181961: 341962: 251963: 251964: 291965: 221966: 311967: 331968: 291969: 241970: 291971: 351972: 241973: 311974: 391975: 301976: 341977: 181978: 331979: 201980: 191981: 241982: 231983: 371984: 231985: 331986: 2719541959196319671971197519791983
Days per year at Illavale with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 45 in 1956.
Days with 10 mm (0.39 in) or more of precipitation per year at Illavale
YearDaysDecade average
19543132.6
19564532.6
19571532.6
19583332.6
19593932.6
19601827
19613427
19622527
19632527
19642927
19652227
19663127
19673327
19682927
19692427
19702929.3
19713529.3
19722429.3
19733129.3
19743929.3
19753029.3
19763429.3
19771829.3
19783329.3
19792029.3
19801926.6
19812426.6
19822326.6
19833726.6
19842326.6
19853326.6
19862726.6
First to last qualifying date each year at Illavale For each year, a bar from the first to the last day at Illavale meeting 10 mm (0.39 in). 1954: 3 January 1954 to 17 December 19541956: 1 January 1956 to 23 December 19561957: 10 January 1957 to 17 December 19571958: 25 January 1958 to 28 December 19581959: 3 January 1959 to 23 December 19591960: 14 January 1960 to 16 December 19601961: 4 January 1961 to 18 December 19611962: 7 January 1962 to 31 December 19621963: 1 January 1963 to 16 December 19631964: 1 January 1964 to 26 December 19641965: 27 January 1965 to 16 December 19651966: 23 January 1966 to 31 December 19661967: 1 January 1967 to 20 December 19671968: 3 January 1968 to 25 December 19681969: 1 January 1969 to 31 December 19691970: 14 January 1970 to 27 December 19701971: 7 January 1971 to 28 December 19711972: 16 January 1972 to 29 December 19721973: 6 January 1973 to 21 December 19731974: 6 January 1974 to 29 December 19741975: 8 January 1975 to 24 December 19751976: 10 January 1976 to 24 December 19761977: 4 January 1977 to 16 December 19771978: 21 January 1978 to 30 December 19781979: 20 January 1979 to 21 December 19791980: 13 January 1980 to 30 December 19801981: 2 January 1981 to 30 December 19811982: 9 January 1982 to 9 December 19821983: 2 January 1983 to 31 December 19831984: 1 January 1984 to 31 December 19841985: 1 January 1985 to 27 December 19851986: 10 January 1986 to 27 December 198619541959196319671971197519791983JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Illavale meeting 10 mm (0.39 in).
First to last qualifying date each year at Illavale
YearFirst dateLast date
19541954-01-031954-12-17
19561956-01-011956-12-23
19571957-01-101957-12-17
19581958-01-251958-12-28
19591959-01-031959-12-23
19601960-01-141960-12-16
19611961-01-041961-12-18
19621962-01-071962-12-31
19631963-01-011963-12-16
19641964-01-011964-12-26
19651965-01-271965-12-16
19661966-01-231966-12-31
19671967-01-011967-12-20
19681968-01-031968-12-25
19691969-01-011969-12-31
19701970-01-141970-12-27
19711971-01-071971-12-28
19721972-01-161972-12-29
19731973-01-061973-12-21
19741974-01-061974-12-29
19751975-01-081975-12-24
19761976-01-101976-12-24
19771977-01-041977-12-16
19781978-01-211978-12-30
19791979-01-201979-12-21
19801980-01-131980-12-30
19811981-01-021981-12-30
19821982-01-091982-12-09
19831983-01-021983-12-31
19841984-01-011984-12-31
19851985-01-011985-12-27
19861986-01-101986-12-27

Every Fixed Threshold

Fixed thresholds at Illavale
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain3245195627
25 mm (0.98 in): Days with 25 mm or more rain322119569
50 mm (1.97 in): Days with 50 mm or more rain29719561
100 mm (3.94 in): Days with 100 mm or more rain8319561
200 mm (7.87 in): Days with 200 mm or more rain1119741

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1954.

Download the Data

  • Data for Illavale 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 2026-10-16 (16 October 2026). Threshold counts are computed by this site.

Data as of . Last revised (2025-12-31).