Built 2026-10-16 (16 October 2026)

Koomooloo Station Threshold Days by Year

3 fixed thresholds counted per year at Koomooloo Station (ASN00020009): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Koomooloo Station Thresholds

  • Koomooloo Station: days with 10 mm (0.39 in) or more of precipitation in 38 years, most in 1973 with 13.
  • Koomooloo Station: days with 25 mm (0.98 in) or more of precipitation in 26 years, most in 1937 with 3.
  • Koomooloo Station: days with 50 mm (1.97 in) or more of precipitation in 6 years, most in 1950 with 2.
  • 3 fixed thresholds have at least one qualifying day at Koomooloo Station.
38 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Koomooloo Station Days per year at Koomooloo Station with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 13 in 1973. 0510151926: 81927: 21928: 21929: 31930: 61933: 51934: 41935: 11936: 71937: 81938: 51939: 31941: 101942: 41943: 51947: 91949: 61950: 81951: 51953: 41954: 81955: 81957: 41958: 51959: 21961: 81962: 71965: 51966: 51968: 61969: 51970: 31971: 41972: 61973: 131975: 81976: 41977: 21926193019361941194919541959196619711976
Days per year at Koomooloo Station with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 13 in 1973.
Days with 10 mm (0.39 in) or more of precipitation per year at Koomooloo Station
YearDaysDecade average
192683.8
192723.8
192823.8
192933.8
193064.9
193354.9
193444.9
193514.9
193674.9
193784.9
193854.9
193934.9
1941106.8
194246.8
194356.8
194796.8
194966.8
195085.5
195155.5
195345.5
195485.5
195585.5
195745.5
195855.5
195925.5
196186
196276
196556
196656
196866
196956
197035.7
197145.7
197265.7
1973135.7
197585.7
197645.7
197725.7
First to last qualifying date each year at Koomooloo Station For each year, a bar from the first to the last day at Koomooloo Station meeting 10 mm (0.39 in). 1926: 11 May 1926 to 1 December 19261927: 5 January 1927 to 1 September 19271928: 25 May 1928 to 29 September 19281929: 28 September 1929 to 27 December 19291930: 24 April 1930 to 23 October 19301933: 21 January 1933 to 28 November 19331934: 10 April 1934 to 6 November 19341935: 2 April 1935 to 2 April 19351936: 5 January 1936 to 16 December 19361937: 9 January 1937 to 2 December 19371938: 15 January 1938 to 24 October 19381939: 25 February 1939 to 11 November 19391941: 23 January 1941 to 5 October 19411942: 20 January 1942 to 12 September 19421943: 18 February 1943 to 16 December 19431947: 13 February 1947 to 19 October 19471949: 27 February 1949 to 9 October 19491950: 2 February 1950 to 19 November 19501951: 7 June 1951 to 20 September 19511953: 10 June 1953 to 20 October 19531954: 26 January 1954 to 11 December 19541955: 8 February 1955 to 22 September 19551957: 20 June 1957 to 28 December 19571958: 7 March 1958 to 29 November 19581959: 25 January 1959 to 4 October 19591961: 8 February 1961 to 22 November 19611962: 26 January 1962 to 30 December 19621965: 21 June 1965 to 5 December 19651966: 12 January 1966 to 2 December 19661968: 19 January 1968 to 24 December 19681969: 9 February 1969 to 13 September 19691970: 22 August 1970 to 4 November 19701971: 25 February 1971 to 15 September 19711972: 6 January 1972 to 26 December 19721973: 3 February 1973 to 14 December 19731975: 12 July 1975 to 13 December 19751976: 9 February 1976 to 13 October 19761977: 1 November 1977 to 27 November 197719261933193819471954196119691975JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Koomooloo Station meeting 10 mm (0.39 in).
First to last qualifying date each year at Koomooloo Station
YearFirst dateLast date
19261926-05-111926-12-01
19271927-01-051927-09-01
19281928-05-251928-09-29
19291929-09-281929-12-27
19301930-04-241930-10-23
19331933-01-211933-11-28
19341934-04-101934-11-06
19351935-04-021935-04-02
19361936-01-051936-12-16
19371937-01-091937-12-02
19381938-01-151938-10-24
19391939-02-251939-11-11
19411941-01-231941-10-05
19421942-01-201942-09-12
19431943-02-181943-12-16
19471947-02-131947-10-19
19491949-02-271949-10-09
19501950-02-021950-11-19
19511951-06-071951-09-20
19531953-06-101953-10-20
19541954-01-261954-12-11
19551955-02-081955-09-22
19571957-06-201957-12-28
19581958-03-071958-11-29
19591959-01-251959-10-04
19611961-02-081961-11-22
19621962-01-261962-12-30
19651965-06-211965-12-05
19661966-01-121966-12-02
19681968-01-191968-12-24
19691969-02-091969-09-13
19701970-08-221970-11-04
19711971-02-251971-09-15
19721972-01-061972-12-26
19731973-02-031973-12-14
19751975-07-121975-12-13
19761976-02-091976-10-13
19771977-11-011977-11-27

Every Fixed Threshold

Fixed thresholds at Koomooloo Station
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain381319732
25 mm (0.98 in): Days with 25 mm or more rain26319371
50 mm (1.97 in): Days with 50 mm or more rain6219502

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1926.

Download the Data

  • Data for Koomooloo Station 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 2026-10-14 (14 October 2026). Threshold counts are computed by this site.

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