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Data as of 2025-12-31
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Built 2026-10-16 (16 October 2026)

Blackhill Threshold Days by Year

4 fixed thresholds counted per year at Blackhill (ASN00012005): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Blackhill Thresholds

  • Blackhill: days with 10 mm (0.39 in) or more of precipitation in 42 years, most in 1963 with 17.
  • Blackhill: days with 25 mm (0.98 in) or more of precipitation in 29 years, most in 1942 with 5.
  • Blackhill: days with 50 mm (1.97 in) or more of precipitation in 10 years, most in 1942 with 2.
  • Blackhill: days with 100 mm (3.94 in) or more of precipitation in 2 years, most in 1939 with 1.
  • 4 fixed thresholds have at least one qualifying day at Blackhill.
42 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Blackhill Days per year at Blackhill with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 17 in 1963. 051015201926: 41927: 101928: 51929: 91930: 61931: 111932: 61933: 71934: 31935: 21937: 61938: 21939: 41940: 31941: 71942: 111943: 31945: 21946: 21947: 101948: 121949: 31951: 71952: 71953: 81954: 41955: 91956: 31957: 81958: 71959: 31960: 141961: 21962: 51963: 171964: 81965: 71966: 61967: 51968: 101969: 31970: 4192619311937194219481954195919641969
Days per year at Blackhill with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 17 in 1963.
Days with 10 mm (0.39 in) or more of precipitation per year at Blackhill
YearDaysDecade average
192647
1927107
192857
192997
193065.2
1931115.2
193265.2
193375.2
193435.2
193525.2
193765.2
193825.2
193945.2
194035.9
194175.9
1942115.9
194335.9
194525.9
194625.9
1947105.9
1948125.9
194935.9
195176.2
195276.2
195386.2
195446.2
195596.2
195636.2
195786.2
195876.2
195936.2
1960147.7
196127.7
196257.7
1963177.7
196487.7
196577.7
196667.7
196757.7
1968107.7
196937.7
197044
First to last qualifying date each year at Blackhill For each year, a bar from the first to the last day at Blackhill meeting 10 mm (0.39 in). 1926: 2 January 1926 to 12 December 19261927: 20 March 1927 to 29 December 19271928: 25 January 1928 to 7 December 19281929: 1 January 1929 to 12 August 19291930: 10 March 1930 to 12 December 19301931: 5 January 1931 to 6 November 19311932: 29 May 1932 to 19 December 19321933: 8 March 1933 to 6 December 19331934: 4 April 1934 to 10 June 19341935: 20 March 1935 to 31 December 19351937: 6 January 1937 to 5 October 19371938: 16 January 1938 to 16 July 19381939: 12 January 1939 to 16 July 19391940: 19 January 1940 to 12 October 19401941: 28 April 1941 to 21 December 19411942: 29 January 1942 to 21 December 19421943: 8 March 1943 to 20 April 19431945: 4 February 1945 to 19 June 19451946: 3 January 1946 to 11 February 19461947: 24 January 1947 to 27 August 19471948: 7 February 1948 to 19 December 19481949: 17 February 1949 to 4 June 19491951: 14 January 1951 to 30 July 19511952: 4 January 1952 to 9 May 19521953: 21 March 1953 to 4 December 19531954: 29 January 1954 to 20 June 19541955: 1 January 1955 to 20 September 19551956: 7 January 1956 to 22 May 19561957: 31 January 1957 to 7 December 19571958: 21 January 1958 to 22 August 19581959: 3 January 1959 to 1 June 19591960: 15 January 1960 to 24 July 19601961: 25 January 1961 to 14 April 19611962: 10 February 1962 to 16 December 19621963: 11 January 1963 to 14 October 19631964: 1 January 1964 to 7 November 19641965: 7 June 1965 to 10 December 19651966: 2 January 1966 to 29 April 19661967: 22 January 1967 to 5 October 19671968: 30 January 1968 to 10 September 19681969: 23 January 1969 to 13 September 19691970: 29 January 1970 to 17 December 19701926193219391946195319591965JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Blackhill meeting 10 mm (0.39 in).
First to last qualifying date each year at Blackhill
YearFirst dateLast date
19261926-01-021926-12-12
19271927-03-201927-12-29
19281928-01-251928-12-07
19291929-01-011929-08-12
19301930-03-101930-12-12
19311931-01-051931-11-06
19321932-05-291932-12-19
19331933-03-081933-12-06
19341934-04-041934-06-10
19351935-03-201935-12-31
19371937-01-061937-10-05
19381938-01-161938-07-16
19391939-01-121939-07-16
19401940-01-191940-10-12
19411941-04-281941-12-21
19421942-01-291942-12-21
19431943-03-081943-04-20
19451945-02-041945-06-19
19461946-01-031946-02-11
19471947-01-241947-08-27
19481948-02-071948-12-19
19491949-02-171949-06-04
19511951-01-141951-07-30
19521952-01-041952-05-09
19531953-03-211953-12-04
19541954-01-291954-06-20
19551955-01-011955-09-20
19561956-01-071956-05-22
19571957-01-311957-12-07
19581958-01-211958-08-22
19591959-01-031959-06-01
19601960-01-151960-07-24
19611961-01-251961-04-14
19621962-02-101962-12-16
19631963-01-111963-10-14
19641964-01-011964-11-07
19651965-06-071965-12-10
19661966-01-021966-04-29
19671967-01-221967-10-05
19681968-01-301968-09-10
19691969-01-231969-09-13
19701970-01-291970-12-17

Every Fixed Threshold

Fixed thresholds at Blackhill
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain421719634
25 mm (0.98 in): Days with 25 mm or more rain29519422
50 mm (1.97 in): Days with 50 mm or more rain10219421
100 mm (3.94 in): Days with 100 mm or more rain2119391

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 Blackhill 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).