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Built 2026-10-17 (17 October 2026)

Pialaway Downs Threshold Days by Year

5 fixed thresholds counted per year at Pialaway Downs (ASN00037037): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Pialaway Downs Thresholds

  • Pialaway Downs: days with 10 mm (0.39 in) or more of precipitation in 31 years, most in 1950 with 34.
  • Pialaway Downs: days with 25 mm (0.98 in) or more of precipitation in 30 years, most in 1950 with 14.
  • Pialaway Downs: days with 50 mm (1.97 in) or more of precipitation in 19 years, most in 1950 with 7.
  • Pialaway Downs: days with 100 mm (3.94 in) or more of precipitation in 6 years, most in 1922 with 2.
  • 5 fixed thresholds have at least one qualifying day at Pialaway Downs.
31 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Pialaway Downs Days per year at Pialaway Downs with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 34 in 1950. 0102030401917: 211918: 201919: 91921: 151922: 111923: 61924: 121925: 131931: 61932: 41933: 151934: 51935: 71936: 151937: 81938: 121939: 141940: 141941: 231942: 111943: 121944: 91945: 81946: 101947: 131948: 81949: 141950: 341951: 91952: 91955: 1919171922193119351939194319471951
Days per year at Pialaway Downs with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 34 in 1950.
Days with 10 mm (0.39 in) or more of precipitation per year at Pialaway Downs
YearDaysDecade average
19172116.7
19182016.7
1919916.7
19211511.4
19221111.4
1923611.4
19241211.4
19251311.4
193169.6
193249.6
1933159.6
193459.6
193579.6
1936159.6
193789.6
1938129.6
1939149.6
19401412.2
19412312.2
19421112.2
19431212.2
1944912.2
1945812.2
19461012.2
19471312.2
1948812.2
19491412.2
19503417.8
1951917.8
1952917.8
19551917.8
First to last qualifying date each year at Pialaway Downs For each year, a bar from the first to the last day at Pialaway Downs meeting 10 mm (0.39 in). 1917: 1 January 1917 to 13 December 19171918: 3 January 1918 to 21 December 19181919: 16 January 1919 to 21 May 19191921: 15 January 1921 to 26 December 19211922: 31 January 1922 to 25 December 19221923: 7 January 1923 to 25 December 19231924: 5 January 1924 to 14 December 19241925: 20 January 1925 to 20 December 19251931: 21 March 1931 to 4 December 19311932: 9 February 1932 to 25 November 19321933: 24 January 1933 to 29 December 19331934: 30 January 1934 to 28 July 19341935: 20 January 1935 to 6 November 19351936: 6 January 1936 to 30 December 19361937: 2 January 1937 to 25 November 19371938: 3 February 1938 to 17 October 19381939: 21 January 1939 to 21 December 19391940: 8 January 1940 to 30 December 19401941: 3 January 1941 to 2 December 19411942: 16 January 1942 to 29 December 19421943: 22 January 1943 to 27 December 19431944: 8 February 1944 to 19 December 19441945: 31 January 1945 to 18 December 19451946: 6 January 1946 to 30 December 19461947: 12 January 1947 to 19 November 19471948: 1 January 1948 to 21 December 19481949: 26 January 1949 to 20 December 19491950: 17 January 1950 to 19 December 19501951: 1 January 1951 to 21 November 19511952: 15 February 1952 to 24 December 19521955: 24 January 1955 to 12 July 195519171922193119351939194319471951JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Pialaway Downs meeting 10 mm (0.39 in).
First to last qualifying date each year at Pialaway Downs
YearFirst dateLast date
19171917-01-011917-12-13
19181918-01-031918-12-21
19191919-01-161919-05-21
19211921-01-151921-12-26
19221922-01-311922-12-25
19231923-01-071923-12-25
19241924-01-051924-12-14
19251925-01-201925-12-20
19311931-03-211931-12-04
19321932-02-091932-11-25
19331933-01-241933-12-29
19341934-01-301934-07-28
19351935-01-201935-11-06
19361936-01-061936-12-30
19371937-01-021937-11-25
19381938-02-031938-10-17
19391939-01-211939-12-21
19401940-01-081940-12-30
19411941-01-031941-12-02
19421942-01-161942-12-29
19431943-01-221943-12-27
19441944-02-081944-12-19
19451945-01-311945-12-18
19461946-01-061946-12-30
19471947-01-121947-11-19
19481948-01-011948-12-21
19491949-01-261949-12-20
19501950-01-171950-12-19
19511951-01-011951-11-21
19521952-02-151952-12-24
19551955-01-241955-07-12

Every Fixed Threshold

Fixed thresholds at Pialaway Downs
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain3134195019
25 mm (0.98 in): Days with 25 mm or more rain3014195011
50 mm (1.97 in): Days with 50 mm or more rain19719505
100 mm (3.94 in): Days with 100 mm or more rain6219222
200 mm (7.87 in): Days with 200 mm or more rain1119221

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1917.

Download the Data

  • Data for Pialaway Downs 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).