Weather Records on 30 September 1973

407 weather records were set or tied worldwide on 30 September 1973. Highest significance: Salgueiro, BR.

Key Facts for 30 September 1973

On 30 September 1973, 407 weather records were set or tied at long-record stations worldwide.
100 were record highs and 98 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 42 monthly and 364 daily.
Salgueiro set a monthly record daily precipitation of 50.1 mm (2.0 in) on 30 September 1973.
Across 161 earlier years (1806 to 2026) the same calendar date averaged 440 records.

Record Map

407 stations

407 station records on 30 September 1973 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 September 1973: highest significance records shown on the map
Station	Country	Type	Value	Significance
Salgueiro	Brazil	Record daily precipitation	50.1 mm (2.0 in)	67 of 100 (Major)
Mallow	South Africa	Record daily precipitation	71.0 mm (2.8 in)	67 of 100 (Major)
Frecheirinha	Brazil	Record daily precipitation	68.4 mm (2.7 in)	64 of 100 (Major)
Santa Filomena (Munduri)	Brazil	Record daily precipitation	38.0 mm (1.5 in)	60 of 100 (Major)
Itaporanga (Misericordia)	Brazil	Record daily precipitation	46.7 mm (1.8 in)	57 of 100 (Notable)
Groblersplaas	South Africa	Record daily precipitation	94.5 mm (3.7 in)	56 of 100 (Notable)
Maatsuyker Island Lighthouse	Australia	Record daily precipitation	32.8 mm (1.3 in)	55 of 100 (Notable)
Doornkom	South Africa	Record daily precipitation	84.0 mm (3.3 in)	55 of 100 (Notable)
Barra de Sao Pedro (Manaca)	Brazil	Record daily precipitation	54.0 mm (2.1 in)	54 of 100 (Notable)
Mapumulo (Tnk)	South Africa	Record daily precipitation	92.5 mm (3.6 in)	53 of 100 (Notable)
Werk-Met-Lus	South Africa	Record daily precipitation	37.5 mm (1.5 in)	53 of 100 (Notable)
Petrolandia (Itaparica)	Brazil	Record daily precipitation	150.1 mm (5.9 in)	50 of 100 (Notable)
Tshakhuma	South Africa	Record daily precipitation	109.0 mm (4.3 in)	49 of 100 (Notable)
Fig Tree	South Africa	Record daily precipitation	72.0 mm (2.8 in)	46 of 100 (Notable)
Dos Bocas	Puerto Rico [United States]	Record daily precipitation	78.7 mm (3.1 in)	45 of 100 (Notable)
Crowe's Place,Seven	South Africa	Record daily precipitation	71.0 mm (2.8 in)	45 of 100 (Notable)
Calera	United States	Record daily precipitation	99.1 mm (3.9 in)	45 of 100 (Notable)
Tashkent	Uzbekistan	Record low minimum temperature	0.1 C (32.2 F)	45 of 100 (Notable)
Steynsrus (Mun)	South Africa	Record daily precipitation	55.0 mm (2.2 in)	43 of 100 (Notable)
Rooipoort	South Africa	Record daily precipitation	54.0 mm (2.1 in)	42 of 100 (Notable)
Murcia/Alcantarilla	Spain	Record daily precipitation	99.0 mm (3.9 in)	41 of 100 (Notable)
Uniontown 1 NE	United States	Record daily precipitation	39.1 mm (1.5 in)	40 of 100 (Notable)
Mtunzini	South Africa	Record daily precipitation	138.0 mm (5.4 in)	39 of 100 (Notable)
Norcross	United States	Record daily precipitation	50.8 mm (2.0 in)	39 of 100 (Notable)
Nongoma	South Africa	Record daily precipitation	115.0 mm (4.5 in)	38 of 100 (Notable)
Carrollton 3 NNE	United States	Record daily precipitation	31.0 mm (1.2 in)	38 of 100 (Notable)
Hobart (Ellerslie Road)	Australia	Record high minimum temperature	18.0 C (64.4 F)	36 of 100 (Notable)
Mocambo	Brazil	Record daily precipitation	25.0 mm (1.0 in)	35 of 100 (Notable)
Surprise Store	South Africa	Record daily precipitation	82.5 mm (3.2 in)	35 of 100 (Notable)
Antioch	United States	Record daily precipitation	55.6 mm (2.2 in)	35 of 100 (Notable)
Sedalia Wtp	United States	Record daily precipitation	27.9 mm (1.1 in)	35 of 100 (Notable)
Sydney (Observatory Hill)	Australia	Record high maximum temperature	32.9 C (91.2 F)	33 of 100 (Routine)
Grenfell	Canada	Record high minimum temperature	10.6 C (51.1 F)	33 of 100 (Routine)
Xochipala	Mexico	Record daily precipitation	66.8 mm (2.6 in)	33 of 100 (Routine)
Chardzhev	Turkmenistan	Record low minimum temperature	3.0 C (37.4 F)	33 of 100 (Routine)
Bajramaly	Turkmenistan	Record low maximum temperature	17.6 C (63.7 F)	33 of 100 (Routine)
Tashkent	Uzbekistan	Record low maximum temperature	14.0 C (57.2 F)	33 of 100 (Routine)
Cedartown	United States	Record daily precipitation	63.0 mm (2.5 in)	32 of 100 (Routine)
New Castle 1 N	United States	Record daily precipitation	33.8 mm (1.3 in)	32 of 100 (Routine)
Qunu (Bos)	South Africa	Record daily precipitation	36.5 mm (1.4 in)	31 of 100 (Routine)
Jhb-Turffontein	South Africa	Record daily precipitation	28.5 mm (1.1 in)	31 of 100 (Routine)
Castellon de la Plana	Spain	Record low minimum temperature	10.4 C (50.7 F)	31 of 100 (Routine)
Brandonville	United States	Record daily precipitation	33.8 mm (1.3 in)	31 of 100 (Routine)
Charleston 1	United States	Record high minimum temperature	23.3 C (73.9 F)	31 of 100 (Routine)
Rauland	Norway	Record snow depth	14.0 cm (5.5 in)	30 of 100 (Routine)
Mahlabatini (Mag)	South Africa	Record daily precipitation	81.5 mm (3.2 in)	30 of 100 (Routine)
Balfour (Mag)	South Africa	Record daily precipitation	39.0 mm (1.5 in)	30 of 100 (Routine)
Wittebank	South Africa	Record daily precipitation	29.0 mm (1.1 in)	30 of 100 (Routine)
Langsloot	South Africa	Record daily precipitation	33.0 mm (1.3 in)	30 of 100 (Routine)
Rietfontein (Skl)	South Africa	Record daily precipitation	40.0 mm (1.6 in)	30 of 100 (Routine)
Tallapoosa 2 N	United States	Record daily precipitation	106.7 mm (4.2 in)	30 of 100 (Routine)
Raleigh State UNIV	United States	Record high maximum temperature	32.2 C (90.0 F)	30 of 100 (Routine)
Fergana	Uzbekistan	Record low maximum temperature	13.9 C (57.0 F)	30 of 100 (Routine)
Forbes (Camp Street)	Australia	Record high maximum temperature	32.5 C (90.5 F)	29 of 100 (Routine)
Ndumu	South Africa	Record daily precipitation	128.0 mm (5.0 in)	29 of 100 (Routine)
Elgin Water	United States	Record daily precipitation	48.3 mm (1.9 in)	29 of 100 (Routine)
Frasers	South Africa	Record daily precipitation	33.2 mm (1.3 in)	28 of 100 (Routine)
Rietvallei	South Africa	Record daily precipitation	48.7 mm (1.9 in)	28 of 100 (Routine)
Union	United States	Record daily precipitation	86.4 mm (3.4 in)	28 of 100 (Routine)
Swan River	Canada	Record high minimum temperature	8.3 C (46.9 F)	27 of 100 (Routine)

Counts by Type and Timescale

407 records

Records set or tied on 30 September 1973 by type: Highest daily maximum 44, Lowest daily maximum 56, Highest daily minimum 56, Lowest daily minimum 42, Heaviest daily rainfall 204, Heaviest daily snowfall 2, Deepest snow cover 3.

Records on 30 September 1973 by type
Record type	Records
Highest daily maximum	44
Lowest daily maximum	56
Highest daily minimum	56
Lowest daily minimum	42
Heaviest daily rainfall	204
Heaviest daily snowfall	2
Deepest snow cover	3

Records on 30 September 1973 by timescale: all-time 1, monthly 42, daily 364.

How Much Records Were Beaten By

348 broken records

Margins by which the 348 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

30 September 1973

Top 20 records on 30 September 1973 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 September 1973	Salgueiro, BR	monthly rain	50.1 mm (2.0 in)	22.7 mm (0.9 in)	62 years	67 of 100 (Major)
30 September 1973	Mallow, ZA	monthly rain	71.0 mm (2.8 in)	29.1 mm (1.1 in)	48 years	67 of 100 (Major)
30 September 1973	Frecheirinha, BR	monthly rain	68.4 mm (2.7 in)	51.0 mm (2.0 in)	34 years	64 of 100 (Major)
30 September 1973	Santa Filomena (Munduri), BR	monthly rain	38.0 mm (1.5 in)	28.2 mm (1.1 in)	21 years	60 of 100 (Major)
30 September 1973	Itaporanga (Misericordia), BR	daily rain	46.7 mm (1.8 in)	43.5 mm (1.7 in)	38 years	57 of 100 (Notable)
30 September 1973	Groblersplaas, ZA	monthly rain	94.5 mm (3.7 in)	24.5 mm (1.0 in)	0 years	56 of 100 (Notable)
30 September 1973	Maatsuyker Island Lighthouse, AU	daily rain	32.8 mm (1.3 in)	16.8 mm (0.7 in)	52 years	55 of 100 (Notable)
30 September 1973	Doornkom, ZA	monthly rain	84.0 mm (3.3 in)	41.0 mm (1.6 in)	2 years	55 of 100 (Notable)
30 September 1973	Barra de Sao Pedro (Manaca), BR	monthly rain	54.0 mm (2.1 in)	44.4 mm (1.7 in)	2 years	54 of 100 (Notable)
30 September 1973	Mapumulo (Tnk), ZA	daily rain	92.5 mm (3.6 in)	40.7 mm (1.6 in)	44 years	53 of 100 (Notable)
30 September 1973	Werk-Met-Lus, ZA	daily rain	37.5 mm (1.5 in)	31.9 mm (1.3 in)	32 years	53 of 100 (Notable)
30 September 1973	Petrolandia (Itaparica), BR	all-time rain	150.1 mm (5.9 in)	8.8 mm (0.35 in)	4 years	50 of 100 (Notable)
30 September 1973	Tshakhuma, ZA	monthly rain	109.0 mm (4.3 in)	26.4 mm (1.0 in)	35 years	49 of 100 (Notable)
30 September 1973	Fig Tree, ZA	daily rain	72.0 mm (2.8 in)	56.0 mm (2.2 in)	4 years	46 of 100 (Notable)
30 September 1973	Dos Bocas, PR	daily rain	78.7 mm (3.1 in)	53.8 mm (2.1 in)	27 years	45 of 100 (Notable)
30 September 1973	Crowe's Place,Seven, ZA	daily rain	71.0 mm (2.8 in)	38.0 mm (1.5 in)	31 years	45 of 100 (Notable)
30 September 1973	Calera, US	daily rain	99.1 mm (3.9 in)	65.6 mm (2.6 in)	8 years	45 of 100 (Notable)
30 September 1973	Tashkent, UZ	monthly low min	0.1 C (32.2 F)	0.1 C (0.2 F)	89 years	45 of 100 (Notable)
30 September 1973	Steynsrus (Mun), ZA	daily rain	55.0 mm (2.2 in)	31.4 mm (1.2 in)	44 years	43 of 100 (Notable)
30 September 1973	Rooipoort, ZA	daily rain	54.0 mm (2.1 in)	36.2 mm (1.4 in)	32 years	42 of 100 (Notable)

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

1806 to 1973

Records set or tied on this calendar date in each year from 1806 to 1973. 1973 had 407 records.

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

Records on 09-30 in each year
Year	Records
1806	1
1813	1
1817	1
1819	2
1834	1
1841	1
1842	1
1847	1
1853	1
1854	1
1855	1
1861	1
1862	1
1866	1
1868	2
1869	3
1870	1
1874	1
1877	1
1878	1
1881	5
1883	2
1885	1
1886	3
1887	1
1888	4
1889	1
1892	2
1893	3
1894	8
1895	5
1896	2
1897	3
1898	3
1899	12
1900	4
1901	11
1902	7
1903	9
1904	14
1905	25
1906	14
1907	16
1908	18
1909	10
1910	5
1911	47
1912	47
1913	10
1914	33
1915	84
1916	209
1917	19
1918	45
1919	28
1920	71
1921	61
1922	71
1923	183
1924	243
1925	211
1926	194
1927	486
1928	560
1929	181
1930	110
1931	225
1932	363
1933	437
1934	398
1935	209
1936	432
1937	417
1938	428
1939	371
1940	316
1941	482
1942	405
1943	404
1944	369
1945	889
1946	320
1947	433
1948	267
1949	366
1950	731
1951	597
1952	504
1953	1,136
1954	1,059
1955	406
1956	350
1957	663
1958	442
1959	1,159
1960	161
1961	618
1962	202
1963	818
1964	332
1965	459
1966	592
1967	859
1968	449
1969	465
1970	334
1971	1,359
1972	676
1973	407
1974	742
1975	686
1976	775
1977	870
1978	399
1979	479
1980	832
1981	688
1982	806
1983	1,102
1984	1,267
1985	1,892
1986	1,805
1987	649
1988	453
1989	713
1990	665
1991	949
1992	980
1993	988
1994	816
1995	1,061
1996	1,396
1997	729
1998	1,206
1999	1,144
2000	887
2001	699
2002	677
2003	1,079
2004	573
2005	761
2006	617
2007	841
2008	585
2009	826
2010	1,059
2011	1,258
2012	637
2013	634
2014	529
2015	997
2016	746
2017	404
2018	717
2019	2,192
2020	554
2021	823
2022	563
2023	1,012
2024	948
2025	559
2026	529

Download the Data

Data for records on 1973-09-30: 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	306
20 to 40	31
40 to 60	7
60 to 80	3
80 to 100	0
100 to 120	0
120 to 140	1