Weather Records on 18 October 1973

789 weather records were set or tied worldwide on 18 October 1973. Highest significance: Clare Post Office, AU.

Key Facts for 18 October 1973

On 18 October 1973, 789 weather records were set or tied at long-record stations worldwide.
152 were record highs and 195 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 61 monthly and 727 daily.
Clare Post Office set a daily record precipitation of 46.7 mm (1.8 in) on 18 October 1973.
Across 167 earlier years (1794 to 2025) the same calendar date averaged 432 records.

Record Map

789 stations

789 station records on 18 October 1973 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 October 1973: highest significance records shown on the map
Station	Country	Type	Value	Significance
Clare Post Office	Australia	Record daily precipitation	46.7 mm (1.8 in)	78 of 100 (Major)
Blanchetown	Australia	Record daily precipitation	41.7 mm (1.6 in)	73 of 100 (Major)
Peterborough	Australia	Record daily precipitation	38.6 mm (1.5 in)	72 of 100 (Major)
Spalding (Bundaleer Reservoir)	Australia	Record daily precipitation	61.0 mm (2.4 in)	72 of 100 (Major)
Morgan Post Office	Australia	Record daily precipitation	33.5 mm (1.3 in)	72 of 100 (Major)
Mintaro	Australia	Record daily precipitation	49.5 mm (1.9 in)	70 of 100 (Major)
Balaklava	Australia	Record daily precipitation	31.8 mm (1.3 in)	67 of 100 (Major)
Hoyleton	Australia	Record daily precipitation	34.8 mm (1.4 in)	67 of 100 (Major)
Port Broughton	Australia	Record daily precipitation	32.3 mm (1.3 in)	67 of 100 (Major)
Redhill	Australia	Record daily precipitation	41.9 mm (1.6 in)	67 of 100 (Major)
Cocanarup	Australia	Record daily precipitation	53.8 mm (2.1 in)	66 of 100 (Major)
Wandearah North	Australia	Record daily precipitation	35.8 mm (1.4 in)	66 of 100 (Major)
Blyth	Australia	Record daily precipitation	38.1 mm (1.5 in)	65 of 100 (Major)
Brinkworth	Australia	Record daily precipitation	46.2 mm (1.8 in)	65 of 100 (Major)
Terowie	Australia	Record daily precipitation	38.6 mm (1.5 in)	65 of 100 (Major)
Eudunda	Australia	Record daily precipitation	50.0 mm (2.0 in)	65 of 100 (Major)
Hallett (Ketchowla)	Australia	Record daily precipitation	29.0 mm (1.1 in)	64 of 100 (Major)
Robertstown	Australia	Record daily precipitation	34.0 mm (1.3 in)	63 of 100 (Major)
Sutherlands	Australia	Record daily precipitation	41.1 mm (1.6 in)	63 of 100 (Major)
Georgetown	Australia	Record daily precipitation	76.5 mm (3.0 in)	62 of 100 (Major)
Loxton (Pyap)	Australia	Record daily precipitation	27.4 mm (1.1 in)	62 of 100 (Major)
Swan Reach	Australia	Record daily precipitation	28.4 mm (1.1 in)	62 of 100 (Major)
Yardea	Australia	Record daily precipitation	36.3 mm (1.4 in)	60 of 100 (Major)
Watervale	Australia	Record daily precipitation	52.3 mm (2.1 in)	60 of 100 (Major)
Sedan	Australia	Record daily precipitation	34.0 mm (1.3 in)	60 of 100 (Major)
Wynbring Siding (Tar 377 Mile)	Australia	Record daily precipitation	63.0 mm (2.5 in)	59 of 100 (Notable)
Point Pass	Australia	Record daily precipitation	47.2 mm (1.9 in)	59 of 100 (Notable)
Nonning	Australia	Record daily precipitation	31.0 mm (1.2 in)	58 of 100 (Notable)
Whyalla (Nonowie)	Australia	Record daily precipitation	38.6 mm (1.5 in)	58 of 100 (Notable)
Booleroo Centre (Willowie)	Australia	Record daily precipitation	39.4 mm (1.6 in)	58 of 100 (Notable)
Maitland	Australia	Record daily precipitation	25.9 mm (1.0 in)	58 of 100 (Notable)
Qualco (Kaluna Vineyards)	Australia	Record daily precipitation	33.0 mm (1.3 in)	58 of 100 (Notable)
Cadell	Australia	Record daily precipitation	33.3 mm (1.3 in)	58 of 100 (Notable)
Port Augusta West	Australia	Record daily precipitation	37.6 mm (1.5 in)	57 of 100 (Notable)
Lyons Sdg (Tar 354 Mile)	Australia	Record daily precipitation	64.0 mm (2.5 in)	57 of 100 (Notable)
Iron Knob	Australia	Record daily precipitation	34.0 mm (1.3 in)	57 of 100 (Notable)
Kimba (Curtinye)	Australia	Record daily precipitation	37.1 mm (1.5 in)	57 of 100 (Notable)
Yatina	Australia	Record daily precipitation	31.2 mm (1.2 in)	57 of 100 (Notable)
Port Wakefield	Australia	Record daily precipitation	33.3 mm (1.3 in)	57 of 100 (Notable)
Dutton	Australia	Record daily precipitation	41.4 mm (1.6 in)	57 of 100 (Notable)
Maliye_Karmakuly	Russia	Record daily precipitation	39.9 mm (1.6 in)	57 of 100 (Notable)
Navarre	Australia	Record daily precipitation	27.9 mm (1.1 in)	56 of 100 (Notable)
Kimba	Australia	Record daily precipitation	45.2 mm (1.8 in)	56 of 100 (Notable)
Auburn	Australia	Record daily precipitation	42.4 mm (1.7 in)	56 of 100 (Notable)
Port Pirie Nyrstar Comparison	Australia	Record daily precipitation	50.3 mm (2.0 in)	56 of 100 (Notable)
Manoora	Australia	Record daily precipitation	58.7 mm (2.3 in)	56 of 100 (Notable)
Stonefield	Australia	Record daily precipitation	36.3 mm (1.4 in)	56 of 100 (Notable)
Ravensthorpe	Australia	Record daily precipitation	58.4 mm (2.3 in)	55 of 100 (Notable)
Kokatha	Australia	Record daily precipitation	34.3 mm (1.4 in)	55 of 100 (Notable)
Kimba (Yeltana)	Australia	Record daily precipitation	34.8 mm (1.4 in)	55 of 100 (Notable)
Mannanarie Post Office	Australia	Record daily precipitation	51.6 mm (2.0 in)	55 of 100 (Notable)
Orroroo	Australia	Record daily precipitation	40.6 mm (1.6 in)	55 of 100 (Notable)
Laura	Australia	Record daily precipitation	51.6 mm (2.0 in)	55 of 100 (Notable)
Appila	Australia	Record daily precipitation	42.4 mm (1.7 in)	54 of 100 (Notable)
Orroroo (Black Rock)	Australia	Record daily precipitation	34.8 mm (1.4 in)	54 of 100 (Notable)
Booleroo Centre	Australia	Record daily precipitation	41.9 mm (1.6 in)	54 of 100 (Notable)
Yongala	Australia	Record daily precipitation	43.2 mm (1.7 in)	54 of 100 (Notable)
Caltowie	Australia	Record daily precipitation	41.4 mm (1.6 in)	54 of 100 (Notable)
Hallett	Australia	Record daily precipitation	39.9 mm (1.6 in)	54 of 100 (Notable)
Clare (Hill River)	Australia	Record daily precipitation	45.5 mm (1.8 in)	54 of 100 (Notable)

Counts by Type and Timescale

789 records

Records set or tied on 18 October 1973 by type: Highest daily maximum 92, Lowest daily maximum 111, Highest daily minimum 60, Lowest daily minimum 84, Heaviest daily rainfall 428, Heaviest daily snowfall 1, Deepest snow cover 13.

Records on 18 October 1973 by type
Record type	Records
Highest daily maximum	92
Lowest daily maximum	111
Highest daily minimum	60
Lowest daily minimum	84
Heaviest daily rainfall	428
Heaviest daily snowfall	1
Deepest snow cover	13

Records on 18 October 1973 by timescale: all-time 1, monthly 61, daily 727.

How Much Records Were Beaten By

695 broken records

Margins by which the 695 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 140.0. Ties are not counted.

Top 20 by Significance

18 October 1973

Top 20 records on 18 October 1973 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 October 1973	Clare Post Office, AU	daily rain	46.7 mm (1.8 in)	30.7 mm (1.2 in)	95 years	78 of 100 (Major)
18 October 1973	Blanchetown, AU	daily rain	41.7 mm (1.6 in)	32.8 mm (1.3 in)	78 years	73 of 100 (Major)
18 October 1973	Peterborough, AU	daily rain	38.6 mm (1.5 in)	35.3 mm (1.4 in)	78 years	72 of 100 (Major)
18 October 1973	Spalding (Bundaleer Reservoir), AU	monthly rain	61.0 mm (2.4 in)	22.9 mm (0.9 in)	55 years	72 of 100 (Major)
18 October 1973	Morgan Post Office, AU	daily rain	33.5 mm (1.3 in)	28.2 mm (1.1 in)	78 years	72 of 100 (Major)
18 October 1973	Mintaro, AU	daily rain	49.5 mm (1.9 in)	31.7 mm (1.2 in)	74 years	70 of 100 (Major)
18 October 1973	Balaklava, AU	daily rain	31.8 mm (1.3 in)	20.9 mm (0.8 in)	63 years	67 of 100 (Major)
18 October 1973	Hoyleton, AU	daily rain	34.8 mm (1.4 in)	21.1 mm (0.8 in)	63 years	67 of 100 (Major)
18 October 1973	Port Broughton, AU	daily rain	32.3 mm (1.3 in)	20.6 mm (0.8 in)	63 years	67 of 100 (Major)
18 October 1973	Redhill, AU	daily rain	41.9 mm (1.6 in)	29.5 mm (1.2 in)	63 years	67 of 100 (Major)
18 October 1973	Cocanarup, AU	monthly rain	53.8 mm (2.1 in)	16.2 mm (0.6 in)	55 years	66 of 100 (Major)
18 October 1973	Wandearah North, AU	daily rain	35.8 mm (1.4 in)	26.1 mm (1.0 in)	63 years	66 of 100 (Major)
18 October 1973	Blyth, AU	daily rain	38.1 mm (1.5 in)	24.9 mm (1.0 in)	56 years	65 of 100 (Major)
18 October 1973	Brinkworth, AU	daily rain	46.2 mm (1.8 in)	33.8 mm (1.3 in)	63 years	65 of 100 (Major)
18 October 1973	Terowie, AU	daily rain	38.6 mm (1.5 in)	33.5 mm (1.3 in)	56 years	65 of 100 (Major)
18 October 1973	Eudunda, AU	daily rain	50.0 mm (2.0 in)	38.6 mm (1.5 in)	56 years	65 of 100 (Major)
18 October 1973	Hallett (Ketchowla), AU	daily rain	29.0 mm (1.1 in)	26.2 mm (1.0 in)	56 years	64 of 100 (Major)
18 October 1973	Robertstown, AU	daily rain	34.0 mm (1.3 in)	27.1 mm (1.1 in)	56 years	63 of 100 (Major)
18 October 1973	Sutherlands, AU	daily rain	41.1 mm (1.6 in)	32.0 mm (1.3 in)	56 years	63 of 100 (Major)
18 October 1973	Georgetown, AU	monthly rain	76.5 mm (3.0 in)	15.5 mm (0.6 in)	71 years	62 of 100 (Major)

Significance is a score from 0 to 100 combining margin, the age of the old record and the length of the station's record. How it is computed.

The Same Date in Other Years

1794 to 1973

Records set or tied on this calendar date in each year from 1794 to 1973. 1973 had 789 records.

Counts for years before the ledger starts come from the same station rules.

Records on 10-18 in each year
Year	Records
1794	1
1796	1
1799	1
1806	1
1807	1
1810	1
1811	2
1817	1
1832	1
1835	1
1836	1
1843	1
1846	2
1848	1
1849	1
1851	1
1852	1
1859	1
1863	1
1865	2
1866	2
1868	1
1869	1
1871	1
1872	1
1874	4
1876	2
1877	2
1879	3
1881	1
1882	1
1883	2
1887	1
1888	1
1890	4
1892	4
1893	1
1894	3
1895	2
1897	6
1898	5
1899	12
1900	5
1901	5
1902	6
1903	9
1904	12
1905	27
1906	17
1907	11
1908	44
1909	23
1910	50
1911	22
1912	12
1913	26
1914	52
1915	12
1916	64
1917	109
1918	24
1919	31
1920	87
1921	87
1922	59
1923	114
1924	151
1925	153
1926	149
1927	309
1928	316
1929	190
1930	507
1931	350
1932	446
1933	264
1934	222
1935	360
1936	483
1937	671
1938	536
1939	475
1940	532
1941	240
1942	332
1943	844
1944	264
1945	398
1946	355
1947	965
1948	1,128
1949	665
1950	996
1951	325
1952	394
1953	678
1954	621
1955	403
1956	578
1957	220
1958	407
1959	246
1960	612
1961	362
1962	252
1963	492
1964	311
1965	1,066
1966	613
1967	405
1968	737
1969	789
1970	501
1971	1,199
1972	1,581
1973	789
1974	746
1975	779
1976	1,326
1977	533
1978	545
1979	555
1980	1,024
1981	680
1982	654
1983	684
1984	1,331
1985	831
1986	344
1987	518
1988	733
1989	1,196
1990	1,043
1991	999
1992	1,295
1993	1,051
1994	1,296
1995	1,227
1996	795
1997	1,240
1998	1,323
1999	773
2000	823
2001	818
2002	878
2003	1,097
2004	1,156
2005	755
2006	1,328
2007	1,298
2008	531
2009	1,546
2010	634
2011	736
2012	741
2013	430
2014	690
2015	915
2016	1,511
2017	590
2018	759
2019	346
2020	957
2021	387
2022	1,334
2023	693
2024	1,142
2025	367

Download the Data

Data for records on 1973-10-18: CSV or JSON. Field meanings are on the data page.

Sources: 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)) Made with Natural Earth. Public domain map data. Borders are Natural Earth's de facto depiction. Data as of 2026-10-17 (17 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-16. Last revised 16 October 2026 (2026-10-16).

Margin	Records
0 to 20	581
20 to 40	104
40 to 60	5
60 to 80	2
80 to 100	0
100 to 120	2
120 to 140	1