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

Merredin Pump Station No.4 Threshold Days by Year (ASN00010248)

4 fixed thresholds counted per year at Merredin Pump Station No.4 (ASN00010248): hot days, frost, tropical nights and heavy rain, with the most days in a year.

Key Facts for Merredin Pump Station No.4 Thresholds

  • Merredin Pump Station No.4: days with 10 mm (0.39 in) or more of precipitation in 28 years, most in 1963 with 19.
  • Merredin Pump Station No.4: days with 25 mm (0.98 in) or more of precipitation in 19 years, most in 1974 with 4.
  • Merredin Pump Station No.4: days with 50 mm (1.97 in) or more of precipitation in 2 years, most in 1971 with 1.
  • Merredin Pump Station No.4: days with 100 mm (3.94 in) or more of precipitation in 1 years, most in 1971 with 1.
  • 4 fixed thresholds have at least one qualifying day at Merredin Pump Station No.4.
28 years with a qualifying day
Days with 10 mm (0.39 in) or more of precipitation per year at Merredin Pump Station No.4 Days per year at Merredin Pump Station No.4 with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 19 in 1963. 051015201954: 61955: 71956: 121957: 61958: 121959: 81960: 111961: 61962: 71963: 191964: 31965: 121966: 131967: 71968: 121969: 31970: 101971: 51972: 51973: 71974: 81975: 81976: 61977: 31978: 111980: 21981: 81982: 81954195719601963196619691972197519781982
Days per year at Merredin Pump Station No.4 with 10 mm (0.39 in) or more of precipitation, with the decade average as a line. The most was 19 in 1963.
Days with 10 mm (0.39 in) or more of precipitation per year at Merredin Pump Station No.4
YearDaysDecade average
195468.5
195578.5
1956128.5
195768.5
1958128.5
195988.5
1960119.3
196169.3
196279.3
1963199.3
196439.3
1965129.3
1966139.3
196779.3
1968129.3
196939.3
1970107
197157
197257
197377
197487
197587
197667
197737
1978117
198026
198186
198286
First to last qualifying date each year at Merredin Pump Station No.4 For each year, a bar from the first to the last day at Merredin Pump Station No.4 meeting 10 mm (0.39 in). 1954: 23 May 1954 to 20 August 19541955: 6 February 1955 to 28 October 19551956: 7 May 1956 to 29 November 19561957: 27 January 1957 to 5 September 19571958: 3 March 1958 to 21 December 19581959: 1 March 1959 to 2 December 19591960: 1 January 1960 to 20 September 19601961: 27 January 1961 to 31 August 19611962: 13 May 1962 to 21 December 19621963: 27 January 1963 to 26 August 19631964: 8 July 1964 to 25 August 19641965: 5 May 1965 to 27 November 19651966: 2 January 1966 to 23 October 19661967: 22 January 1967 to 4 October 19671968: 27 January 1968 to 10 September 19681969: 18 May 1969 to 12 September 19691970: 16 February 1970 to 4 October 19701971: 13 March 1971 to 10 November 19711972: 3 March 1972 to 27 July 19721973: 10 June 1973 to 5 November 19731974: 4 April 1974 to 7 December 19741975: 5 May 1975 to 10 December 19751976: 27 February 1976 to 4 September 19761977: 16 May 1977 to 10 August 19771978: 2 January 1978 to 19 December 19781980: 16 January 1980 to 25 February 19801981: 17 February 1981 to 8 December 19811982: 4 March 1982 to 21 November 19821954195819621966197019741978JanFebMarAprMayJunJulAugSepOctNovDec
For each year, a bar from the first to the last day at Merredin Pump Station No.4 meeting 10 mm (0.39 in).
First to last qualifying date each year at Merredin Pump Station No.4
YearFirst dateLast date
19541954-05-231954-08-20
19551955-02-061955-10-28
19561956-05-071956-11-29
19571957-01-271957-09-05
19581958-03-031958-12-21
19591959-03-011959-12-02
19601960-01-011960-09-20
19611961-01-271961-08-31
19621962-05-131962-12-21
19631963-01-271963-08-26
19641964-07-081964-08-25
19651965-05-051965-11-27
19661966-01-021966-10-23
19671967-01-221967-10-04
19681968-01-271968-09-10
19691969-05-181969-09-12
19701970-02-161970-10-04
19711971-03-131971-11-10
19721972-03-031972-07-27
19731973-06-101973-11-05
19741974-04-041974-12-07
19751975-05-051975-12-10
19761976-02-271976-09-04
19771977-05-161977-08-10
19781978-01-021978-12-19
19801980-01-161980-02-25
19811981-02-171981-12-08
19821982-03-041982-11-21

Every Fixed Threshold

Fixed thresholds at Merredin Pump Station No.4
ThresholdYears with a qualifying dayMost days in a yearYearLatest year days
10 mm (0.39 in): Days with 10 mm or more rain281919638
25 mm (0.98 in): Days with 25 mm or more rain19419744
50 mm (1.97 in): Days with 50 mm or more rain2119711
100 mm (3.94 in): Days with 100 mm or more rain1119711

Years with under 90 percent of days observed are left out of the most days column. Threshold history at this station starts in 1954.

Download the Data

  • Data for Merredin Pump Station No.4 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).