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

Glenroy Threshold Days by Year (ASN00002042)

4 fixed thresholds counted per year at Glenroy (ASN00002042): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Glenroy Thresholds

  • Glenroy: days with 10 mm (0.39 in) or more of precipitation in 23 years, most in 1974 with 34.
  • Glenroy: days with 25 mm (0.98 in) or more of precipitation in 23 years, most in 1974 with 16.
  • Glenroy: days with 50 mm (1.97 in) or more of precipitation in 17 years, most in 1968 with 7.
  • Glenroy: days with 100 mm (3.94 in) or more of precipitation in 4 years, most in 1962 with 1.
  • 4 fixed thresholds have at least one qualifying day at Glenroy.
23 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Glenroy Days per year at Glenroy with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 34 in 1974. 0102030401959: 211960: 251961: 141962: 211963: 201964: 111965: 101966: 131967: 231968: 331969: 221970: 91971: 191972: 141973: 221974: 341975: 161980: 161981: 211989: 151990: 171991: 181992: 1219591962196519681971197419811991
Days per year at Glenroy with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 34 in 1974.
Days with 10 mm (0.39 in) or more of precipitation per year at Glenroy
YearDaysDecade average
19592121
19602519.2
19611419.2
19622119.2
19632019.2
19641119.2
19651019.2
19661319.2
19672319.2
19683319.2
19692219.2
1970919
19711919
19721419
19732219
19743419
19751619
19801617.3
19812117.3
19891517.3
19901715.7
19911815.7
19921215.7
First to last qualifying date each year at Glenroy For each year, a bar from the first to the last day at Glenroy meeting 10 mm (0.39 in). 1959: 2 January 1959 to 22 December 19591960: 7 January 1960 to 23 December 19601961: 2 January 1961 to 26 December 19611962: 5 January 1962 to 21 December 19621963: 2 January 1963 to 31 December 19631964: 4 January 1964 to 18 December 19641965: 20 January 1965 to 25 December 19651966: 14 January 1966 to 26 December 19661967: 1 January 1967 to 22 December 19671968: 2 January 1968 to 22 December 19681969: 9 January 1969 to 23 December 19691970: 15 January 1970 to 26 December 19701971: 13 January 1971 to 1 December 19711972: 9 February 1972 to 18 December 19721973: 6 January 1973 to 6 December 19731974: 5 January 1974 to 25 December 19741975: 9 January 1975 to 9 December 19751980: 14 January 1980 to 31 December 19801981: 2 January 1981 to 28 December 19811989: 6 January 1989 to 20 December 19891990: 3 January 1990 to 20 December 19901991: 1 January 1991 to 22 December 19911992: 19 January 1992 to 19 May 199219591962196519681971197419811991JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Glenroy meeting 10 mm (0.39 in).
First to last qualifying date each year at Glenroy
YearFirst dateLast date
19591959-01-021959-12-22
19601960-01-071960-12-23
19611961-01-021961-12-26
19621962-01-051962-12-21
19631963-01-021963-12-31
19641964-01-041964-12-18
19651965-01-201965-12-25
19661966-01-141966-12-26
19671967-01-011967-12-22
19681968-01-021968-12-22
19691969-01-091969-12-23
19701970-01-151970-12-26
19711971-01-131971-12-01
19721972-02-091972-12-18
19731973-01-061973-12-06
19741974-01-051974-12-25
19751975-01-091975-12-09
19801980-01-141980-12-31
19811981-01-021981-12-28
19891989-01-061989-12-20
19901990-01-031990-12-20
19911991-01-011991-12-22
19921992-01-191992-05-19

Every Fixed Threshold

Fixed thresholds at Glenroy
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain2334197412
25 mm (0.98 in): Days with 25 mm or more rain231619743
50 mm (1.97 in): Days with 50 mm or more rain17719681
100 mm (3.94 in): Days with 100 mm or more rain4119621

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1959.

Download the Data

  • Data for Glenroy 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).