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Data as of 2025-12-31
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Built 2026-10-17 (17 October 2026)

Koolanooka Dam Threshold Days by Year

3 fixed thresholds counted per year at Koolanooka Dam (ASN00008069): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Koolanooka Dam Thresholds

  • Koolanooka Dam: days with 10 mm (0.39 in) or more of precipitation in 22 years, most in 1917 with 18.
  • Koolanooka Dam: days with 25 mm (0.98 in) or more of precipitation in 20 years, most in 1917 with 8.
  • Koolanooka Dam: days with 50 mm (1.97 in) or more of precipitation in 8 years, most in 1918 with 2.
  • 3 fixed thresholds have at least one qualifying day at Koolanooka Dam.
22 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Koolanooka Dam Days per year at Koolanooka Dam with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 18 in 1917. 051015201916: 71917: 181918: 171919: 111920: 61921: 171922: 41923: 121924: 81930: 61931: 71932: 111933: 61934: 151936: 81938: 41939: 111940: 71941: 111942: 61943: 121944: 919161919192219301933193819411944
Days per year at Koolanooka Dam with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 18 in 1917.
Days with 10 mm (0.39 in) or more of precipitation per year at Koolanooka Dam
YearDaysDecade average
1916713.3
19171813.3
19181713.3
19191113.3
192069.4
1921179.4
192249.4
1923129.4
192489.4
193068.5
193178.5
1932118.5
193368.5
1934158.5
193688.5
193848.5
1939118.5
194079
1941119
194269
1943129
194499
First to last qualifying date each year at Koolanooka Dam For each year, a bar from the first to the last day at Koolanooka Dam meeting 10 mm (0.39 in). 1916: 20 January 1916 to 5 October 19161917: 18 March 1917 to 9 December 19171918: 1 January 1918 to 16 September 19181919: 17 April 1919 to 10 December 19191920: 12 March 1920 to 13 September 19201921: 16 January 1921 to 29 October 19211922: 27 February 1922 to 25 August 19221923: 18 January 1923 to 10 July 19231924: 7 June 1924 to 27 October 19241930: 5 March 1930 to 8 July 19301931: 22 February 1931 to 6 November 19311932: 28 March 1932 to 27 August 19321933: 21 May 1933 to 30 August 19331934: 19 January 1934 to 23 August 19341936: 10 January 1936 to 30 September 19361938: 15 March 1938 to 21 July 19381939: 25 January 1939 to 29 July 19391940: 14 May 1940 to 18 October 19401941: 5 April 1941 to 17 November 19411942: 8 March 1942 to 1 July 19421943: 31 January 1943 to 8 December 19431944: 20 January 1944 to 27 August 194419161919192219301933193819411944JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Koolanooka Dam meeting 10 mm (0.39 in).
First to last qualifying date each year at Koolanooka Dam
YearFirst dateLast date
19161916-01-201916-10-05
19171917-03-181917-12-09
19181918-01-011918-09-16
19191919-04-171919-12-10
19201920-03-121920-09-13
19211921-01-161921-10-29
19221922-02-271922-08-25
19231923-01-181923-07-10
19241924-06-071924-10-27
19301930-03-051930-07-08
19311931-02-221931-11-06
19321932-03-281932-08-27
19331933-05-211933-08-30
19341934-01-191934-08-23
19361936-01-101936-09-30
19381938-03-151938-07-21
19391939-01-251939-07-29
19401940-05-141940-10-18
19411941-04-051941-11-17
19421942-03-081942-07-01
19431943-01-311943-12-08
19441944-01-201944-08-27

Every Fixed Threshold

Fixed thresholds at Koolanooka Dam
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain221819179
25 mm (0.98 in): Days with 25 mm or more rain20819171
50 mm (1.97 in): Days with 50 mm or more rain8219181

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1916.

Download the Data

  • Data for Koolanooka Dam 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 2026-10-15 (15 October 2026). Threshold counts are computed by this site.

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