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South Johnstone Post Office Weather Records (ASN00032038)

Record envelope, standing records and threshold days for South Johnstone Post Office (ASN00032038), Australia, with 52 years of record.

Key Facts for South Johnstone Post Office

  • South Johnstone Post Office (ASN00032038) is a weather station in Australia at -17.60 latitude and 146.00 longitude, 40 m (131 ft) above sea level.
  • The station reports from 1934 to 1985, 52 years of record.
  • 0 records set at South Johnstone Post Office still stand.
  • Records are tracked for prcp: an element needs 30 years of data to be eligible.
  • South Johnstone Post Office set a daily record precipitation of 160.0 mm (6.3 in) on 5 November 1985.

About the Station

  • Location: Australia, -17.60 latitude, 146.00 longitude.
  • Elevation: 40 m (131 ft).
  • Period of record: 1934 to 1985, 52 years.
  • Eligible elements: prcp.

Daily Record Envelope and 2026

0 days at or beyond a record
Daily record high and record low at South Johnstone Post Office, with 2026 drawn through them The band shows the record high and record low for each calendar day at South Johnstone Post Office. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius. 000111 JanFebMarAprMayJunJulAugSepOctNovDec
The band shows the record high and record low for each calendar day at South Johnstone Post Office. The lines show the 2026 daily maximum and minimum. 0 days in 2026 matched or passed a record. Temperatures are in degrees Celsius.
Daily record high and record low at South Johnstone Post Office, with 2026 drawn through them
MonthHighest record highLowest record low2026 highest maximum2026 lowest minimum
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Which Years Hold Standing Records

0 standing records
Standing records at South Johnstone Post Office by the year they were set 0 records at South Johnstone Post Office still stand. 00000000000
0 records at South Johnstone Post Office still stand.
Standing records at South Johnstone Post Office by the year they were set
Year setStanding records

All-Time Record Progression

1 new records
When South Johnstone Post Office set new all-time records 1 all-time records were set at South Johnstone Post Office between 13 January 1981 and 13 January 1981. Each dot is a new record. Record daily precipitation13 January 1981: Record daily precipitation 441.0 mm (17.4 in)
1 all-time records were set at South Johnstone Post Office between 13 January 1981 and 13 January 1981. Each dot is a new record.
When South Johnstone Post Office set new all-time records
DateKindDetail
1981-01-13Record daily precipitationRecord daily precipitation 441.0 mm (17.4 in)

Wettest Day of Each Month

Jan: 441.0 mm (17.4 in)
Record daily precipitation for each month at South Johnstone Post Office The wettest day on record for each calendar month at South Johnstone Post Office. The most was 441.0 mm (17.4 in) on 13 January 1981. 0200400600 Jan: 441.0 mm (17.4 in), 13 January 1981 Jan Feb: 397.0 mm (15.6 in), 27 February 1959 Feb Mar: 409.4 mm (16.1 in), 2 March 1935 Mar Apr: 273.0 mm (10.7 in), 15 April 1982 Apr May: 218.4 mm (8.6 in), 7 May 1964 May Jun: 134.6 mm (5.3 in), 6 June 1967 Jun Jul: 82.0 mm (3.2 in), 18 July 1969 Jul Aug: 103.6 mm (4.1 in), 27 August 1959 Aug Sep: 103.0 mm (4.1 in), 28 September 1983 Sep Oct: 257.0 mm (10.1 in), 4 October 1954 Oct Nov: 235.0 mm (9.3 in), 23 November 1950 Nov Dec: 206.8 mm (8.1 in), 21 December 1950 Dec
The wettest day on record for each calendar month at South Johnstone Post Office. The most was 441.0 mm (17.4 in) on 13 January 1981.
Record daily precipitation for each month at South Johnstone Post Office
MonthRecord daily precipitation (mm)Date
Jan441.0 mm (17.4 in)13 January 1981
Feb397.0 mm (15.6 in)27 February 1959
Mar409.4 mm (16.1 in)2 March 1935
Apr273.0 mm (10.7 in)15 April 1982
May218.4 mm (8.6 in)7 May 1964
Jun134.6 mm (5.3 in)6 June 1967
Jul82.0 mm (3.2 in)18 July 1969
Aug103.6 mm (4.1 in)27 August 1959
Sep103.0 mm (4.1 in)28 September 1983
Oct257.0 mm (10.1 in)4 October 1954
Nov235.0 mm (9.3 in)23 November 1950
Dec206.8 mm (8.1 in)21 December 1950

Latest Records

20
Latest records at South Johnstone Post Office
DateStationRecordValueBeat old record byOld record stoodSignificance
5 November 1985South Johnstone Post Office, AUdaily rain160.0 mm (6.3 in)48.2 mm (1.9 in)30 years35 of 100 (Notable)
26 October 1985South Johnstone Post Office, AUdaily rain40.0 mm (1.6 in)26.2 mm (1.0 in)7 years19 of 100 (Routine)
2 October 1985South Johnstone Post Office, AUdaily rain15.0 mm (0.6 in)3.1 mm (0.12 in)50 years20 of 100 (Routine)
23 March 1985South Johnstone Post Office, AUdaily rain220.0 mm (8.7 in)133.4 mm (5.3 in)46 years43 of 100 (Notable)
7 February 1985South Johnstone Post Office, AUdaily rain184.0 mm (7.2 in)83.4 mm (3.3 in)29 years29 of 100 (Routine)
16 January 1985South Johnstone Post Office, AUdaily rain156.0 mm (6.1 in)27.0 mm (1.1 in)17 years15 of 100 (Routine)
1 June 1984South Johnstone Post Office, AUdaily rain57.0 mm (2.2 in)13.1 mm (0.5 in)30 years21 of 100 (Routine)
3 February 1984South Johnstone Post Office, AUdaily rain297.0 mm (11.7 in)52.9 mm (2.1 in)28 years23 of 100 (Routine)
28 September 1983South Johnstone Post Office, AUmonthly rain103.0 mm (4.1 in)13.0 mm (0.5 in)2 years24 of 100 (Routine)
26 July 1983South Johnstone Post Office, AUdaily rain36.0 mm (1.4 in)23.3 mm (0.9 in)10 years27 of 100 (Routine)
13 May 1983South Johnstone Post Office, AUdaily rain51.0 mm (2.0 in)6.0 mm (0.24 in)28 years15 of 100 (Routine)
10 March 1983South Johnstone Post Office, AUdaily rain232.0 mm (9.1 in)93.3 mm (3.7 in)12 years25 of 100 (Routine)
9 March 1983South Johnstone Post Office, AUdaily rain245.0 mm (9.6 in)112.0 mm (4.4 in)5 years27 of 100 (Routine)
18 August 1982South Johnstone Post Office, AUdaily rain35.0 mm (1.4 in)22.0 mm (0.9 in)15 years24 of 100 (Routine)
11 August 1982South Johnstone Post Office, AUdaily rain20.0 mm (0.8 in)6.8 mm (0.27 in)4 years10 of 100 (Routine)
3 August 1982South Johnstone Post Office, AUdaily rain11.0 mm (0.4 in)2.9 mm (0.11 in)28 years14 of 100 (Routine)
17 May 1982South Johnstone Post Office, AUdaily rain61.0 mm (2.4 in)25.9 mm (1.0 in)16 years18 of 100 (Routine)
17 April 1982South Johnstone Post Office, AUdaily rain127.0 mm (5.0 in)84.1 mm (3.3 in)12 years33 of 100 (Routine)
15 April 1982South Johnstone Post Office, AUmonthly rain273.0 mm (10.7 in)30.2 mm (1.2 in)41 years35 of 100 (Notable)
29 January 1982South Johnstone Post Office, AUdaily rain178.0 mm (7.0 in)23.6 mm (0.9 in)20 years14 of 100 (Routine)

Extremes by Year

1934 to 1985
Yearly extremes at South Johnstone Post Office: the record and the median year
MeasureRecordYear of the recordMedian yearYears with a value
Wettest day (Rx1day)441.0 mm (17.4 in)1981219.6 mm (8.6 in)52
Wettest five days (Rx5day)1,174.0 mm (46.2 in)1981427.2 mm (16.8 in)52
Longest dry spell (CDD)63 days194130 days52

Wettest day (Rx1day)

Wettest day (Rx1day) at South Johnstone Post Office by year The wettest day of the year at South Johnstone Post Office, 1934 to 1985. The record is 441.0 mm (17.4 in) in 1981, marked on the chart; the median year is 219.6 mm (8.6 in). 010020030040050019401950196019701980Record: 441.0 mm (17.4 in) in 1981
The wettest day of the year at South Johnstone Post Office, 1934 to 1985. The record is 441.0 mm (17.4 in) in 1981, marked on the chart; the median year is 219.6 mm (8.6 in).
Wettest day (Rx1day) at South Johnstone Post Office by year
YearWettest day (Rx1day)
1934139.2 mm (5.5 in)
1935409.4 mm (16.1 in)
1936236.2 mm (9.3 in)
1937180.3 mm (7.1 in)
1938329.7 mm (13.0 in)
1939293.1 mm (11.5 in)
1940256.3 mm (10.1 in)
1941242.8 mm (9.6 in)
1942198.9 mm (7.8 in)
1943148.6 mm (5.9 in)
1944222.3 mm (8.8 in)
1945238.5 mm (9.4 in)
1946280.7 mm (11.1 in)
1947138.4 mm (5.4 in)
1948426.7 mm (16.8 in)
1949309.9 mm (12.2 in)
1950235.0 mm (9.3 in)
1951191.8 mm (7.6 in)
195286.1 mm (3.4 in)
1953151.1 mm (5.9 in)
1954257.0 mm (10.1 in)
1955244.1 mm (9.6 in)
1956215.9 mm (8.5 in)
1957219.2 mm (8.6 in)
1958155.2 mm (6.1 in)
1959397.0 mm (15.6 in)
1960240.3 mm (9.5 in)
1961199.6 mm (7.9 in)
1962154.4 mm (6.1 in)
1963213.4 mm (8.4 in)
1964218.4 mm (8.6 in)
1965163.3 mm (6.4 in)
1966129.5 mm (5.1 in)
1967370.8 mm (14.6 in)
1968183.4 mm (7.2 in)
1969179.1 mm (7.1 in)
1970111.3 mm (4.4 in)
1971218.4 mm (8.6 in)
1972325.9 mm (12.8 in)
1973270.5 mm (10.6 in)
1974124.0 mm (4.9 in)
1975177.8 mm (7.0 in)
1976143.2 mm (5.6 in)
1977343.0 mm (13.5 in)
1978119.4 mm (4.7 in)
1979248.0 mm (9.8 in)
1980104.0 mm (4.1 in)
1981441.0 mm (17.4 in)
1982273.0 mm (10.7 in)
1983245.0 mm (9.6 in)
1984297.0 mm (11.7 in)
1985220.0 mm (8.7 in)

Wettest five days (Rx5day)

Wettest five days (Rx5day) at South Johnstone Post Office by year The wettest five days of the year at South Johnstone Post Office, 1934 to 1985. The record is 1,174.0 mm (46.2 in) in 1981, marked on the chart; the median year is 427.2 mm (16.8 in). 02505007501,0001,25019401950196019701980Record: 1,174.0 mm (46.2 in) in 1981
The wettest five days of the year at South Johnstone Post Office, 1934 to 1985. The record is 1,174.0 mm (46.2 in) in 1981, marked on the chart; the median year is 427.2 mm (16.8 in).
Wettest five days (Rx5day) at South Johnstone Post Office by year
YearWettest five days (Rx5day)
1934291.3 mm (11.5 in)
19351,008.8 mm (39.7 in)
1936712.6 mm (28.1 in)
1937535.1 mm (21.1 in)
1938578.4 mm (22.8 in)
1939588.7 mm (23.2 in)
1940482.7 mm (19.0 in)
1941618.0 mm (24.3 in)
1942304.3 mm (12.0 in)
1943329.6 mm (13.0 in)
1944381.1 mm (15.0 in)
1945542.8 mm (21.4 in)
1946435.6 mm (17.1 in)
1947379.8 mm (15.0 in)
1948660.2 mm (26.0 in)
1949802.9 mm (31.6 in)
1950408.8 mm (16.1 in)
1951270.0 mm (10.6 in)
1952237.0 mm (9.3 in)
1953377.9 mm (14.9 in)
1954292.1 mm (11.5 in)
1955534.4 mm (21.0 in)
1956358.1 mm (14.1 in)
1957422.9 mm (16.6 in)
1958317.1 mm (12.5 in)
1959527.3 mm (20.8 in)
1960302.7 mm (11.9 in)
1961273.0 mm (10.7 in)
1962431.5 mm (17.0 in)
1963548.2 mm (21.6 in)
1964411.8 mm (16.2 in)
1965448.9 mm (17.7 in)
1966227.1 mm (8.9 in)
1967833.4 mm (32.8 in)
1968322.9 mm (12.7 in)
1969481.4 mm (19.0 in)
1970209.5 mm (8.2 in)
1971313.9 mm (12.4 in)
1972512.6 mm (20.2 in)
1973712.0 mm (28.0 in)
1974329.6 mm (13.0 in)
1975447.2 mm (17.6 in)
1976251.6 mm (9.9 in)
1977565.2 mm (22.3 in)
1978252.8 mm (10.0 in)
1979856.4 mm (33.7 in)
1980256.0 mm (10.1 in)
19811,174.0 mm (46.2 in)
1982526.0 mm (20.7 in)
1983613.0 mm (24.1 in)
1984420.0 mm (16.5 in)
1985385.0 mm (15.2 in)

Longest dry spell (CDD)

Longest dry spell (CDD) at South Johnstone Post Office by year The longest dry spell of the year at South Johnstone Post Office, 1934 to 1985. The record is 63 days in 1941, marked on the chart; the median year is 30 days. 02040608019401950196019701980Record: 63 days in 1941
The longest dry spell of the year at South Johnstone Post Office, 1934 to 1985. The record is 63 days in 1941, marked on the chart; the median year is 30 days.
Longest dry spell (CDD) at South Johnstone Post Office by year
YearLongest dry spell (CDD)
193436 days
193523 days
193625 days
193740 days
193815 days
193943 days
194024 days
194163 days
194218 days
194348 days
194443 days
194538 days
194637 days
194717 days
194848 days
194924 days
195027 days
195137 days
195226 days
195325 days
195419 days
195525 days
195624 days
195738 days
195845 days
195947 days
196035 days
196132 days
196239 days
196337 days
196422 days
196518 days
196636 days
196745 days
196833 days
196929 days
197022 days
197130 days
197248 days
197316 days
197436 days
197521 days
197627 days
197722 days
197819 days
197949 days
198029 days
198136 days
198229 days
198325 days
198447 days
198519 days

Each chart shows one value per year; the dot marks the record year. TXx is the hottest daily maximum, TNn the coldest daily minimum, Rx1day and Rx5day the largest one-day and five-day rain totals, and CDD the longest run of days with less than 1 mm of rain. A year with missing days can understate an extreme.

Rainfall Return Levels

30 years, 1935 to 1974

A day with at least 231.2 mm (9.1 in) of rain is expected about once in 2 years. A day with at least 497.2 mm (19.6 in) of rain is expected about once in 100 years.

Rainfall return levels at South Johnstone Post Office: the daily rain expected about once in a given number of years
Expected about once inA day with at leastNote
2 years231.2 mm (9.1 in)
5 years311.0 mm (12.2 in)
10 years360.1 mm (14.2 in)
25 years418.4 mm (16.5 in)
50 years459.0 mm (18.1 in)Longer than the 30 years of record
100 years497.2 mm (19.6 in)Longer than the 30 years of record

The levels come from a generalised extreme value (GEV) distribution fitted by L-moments to the wettest-day total of each year, 30 years of values from 1935 to 1974.

A return level is an estimate. It is least reliable for the long periods, 50 and 100 years, and for any period longer than the record behind the fit, where the fit has to reach past the largest day actually observed. It is not a forecast.

The largest wettest-day totals in the fit: 426.7 mm (16.8 in) in 1948; 409.4 mm (16.1 in) in 1935; 397.0 mm (15.6 in) in 1959.

Download the Data

  • Data for South Johnstone Post Office standing records by year: CSV or JSON. Field meanings are on the data page.
  • Data for South Johnstone Post Office 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

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