Weather Records on 30 September 1947

433 weather records were set or tied worldwide on 30 September 1947. Highest significance: Nanambinia, AU.

Key Facts for 30 September 1947

On 30 September 1947, 433 weather records were set or tied at long-record stations worldwide.
103 were record highs and 225 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 24 monthly and 409 daily.
Nanambinia set a daily record precipitation of 32.3 mm (1.3 in) on 30 September 1947.
Across 161 earlier years (1806 to 2026) the same calendar date averaged 440 records.

Record Map

433 stations

433 station records on 30 September 1947 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 September 1947: highest significance records shown on the map
Station	Country	Type	Value	Significance
Nanambinia	Australia	Record daily precipitation	32.3 mm (1.3 in)	55 of 100 (Notable)
Kojnas	Russia	Record daily precipitation	27.6 mm (1.1 in)	47 of 100 (Notable)
Noondoonia	Australia	Record daily precipitation	47.0 mm (1.9 in)	43 of 100 (Notable)
Zanthus	Australia	Record daily precipitation	33.3 mm (1.3 in)	42 of 100 (Notable)
Shenkursk	Russia	Record daily precipitation	27.8 mm (1.1 in)	41 of 100 (Notable)
Cortland	United States	Record low maximum temperature	6.1 C (43.0 F)	34 of 100 (Routine)
Jashpurnagar	India	Record daily precipitation	182.9 mm (7.2 in)	33 of 100 (Routine)
Flandreau	United States	Record daily precipitation	41.9 mm (1.6 in)	33 of 100 (Routine)
Onaka	United States	Record daily precipitation	25.7 mm (1.0 in)	33 of 100 (Routine)
Dhulia	India	Record daily precipitation	94.0 mm (3.7 in)	32 of 100 (Routine)
New Westminster	Canada	Record high maximum temperature	25.6 C (78.1 F)	31 of 100 (Routine)
Clark	United States	Record daily precipitation	27.9 mm (1.1 in)	30 of 100 (Routine)
Drouin West	Australia	Record daily precipitation	33.0 mm (1.3 in)	26 of 100 (Routine)
Auburn	United States	Record low maximum temperature	8.3 C (46.9 F)	26 of 100 (Routine)
Machilpur	India	Record daily precipitation	25.4 mm (1.0 in)	25 of 100 (Routine)
Childs	United States	Record high minimum temperature	25.0 C (77.0 F)	25 of 100 (Routine)
Seligman	United States	Record high minimum temperature	13.9 C (57.0 F)	25 of 100 (Routine)
Robe Comparison	Australia	Record low maximum temperature	10.6 C (51.1 F)	24 of 100 (Routine)
Karjat	India	Record daily precipitation	73.7 mm (2.9 in)	24 of 100 (Routine)
Magdalena	United States	Record high minimum temperature	13.9 C (57.0 F)	24 of 100 (Routine)
Aberdeen	United States	Record low maximum temperature	6.7 C (44.1 F)	24 of 100 (Routine)
Indian Lake 2SW	United States	Record low maximum temperature	4.4 C (39.9 F)	23 of 100 (Routine)
Brookings 2 NE	United States	Record daily precipitation	37.1 mm (1.5 in)	23 of 100 (Routine)
De Smet	United States	Record low maximum temperature	7.2 C (45.0 F)	23 of 100 (Routine)
De Smet	United States	Record daily precipitation	28.2 mm (1.1 in)	23 of 100 (Routine)
Eureka	United States	Record low maximum temperature	7.8 C (46.0 F)	23 of 100 (Routine)
Flandreau	United States	Record low maximum temperature	5.6 C (42.1 F)	23 of 100 (Routine)
Mellette 4 W	United States	Record low maximum temperature	8.3 C (46.9 F)	23 of 100 (Routine)
Fort Frances	Canada	Record low minimum temperature	-4.4 C (24.1 F)	22 of 100 (Routine)
Las Animas	United States	Record high maximum temperature	36.7 C (98.1 F)	22 of 100 (Routine)
Saint Leo	United States	Record low minimum temperature	14.4 C (57.9 F)	22 of 100 (Routine)
Sheldon	United States	Record low maximum temperature	5.6 C (42.1 F)	22 of 100 (Routine)
Winona	United States	Record low maximum temperature	9.4 C (48.9 F)	22 of 100 (Routine)
Worthington	United States	Record low maximum temperature	6.1 C (43.0 F)	22 of 100 (Routine)
Forman 5 SSE	United States	Record low maximum temperature	7.2 C (45.0 F)	22 of 100 (Routine)
Larimore 4SW	United States	Record low maximum temperature	6.1 C (43.0 F)	22 of 100 (Routine)
Wahpeton 3 N	United States	Record low maximum temperature	8.3 C (46.9 F)	22 of 100 (Routine)
Clark	United States	Record low maximum temperature	5.6 C (42.1 F)	22 of 100 (Routine)
Watertown Rgnl AP	United States	Record low maximum temperature	5.0 C (41.0 F)	22 of 100 (Routine)
Pelee Island	Canada	Record low minimum temperature	2.8 C (37.0 F)	21 of 100 (Routine)
Effingham 3SW	United States	Record low maximum temperature	12.8 C (55.0 F)	21 of 100 (Routine)
Valparaiso Wtr Wks	United States	Record low maximum temperature	11.1 C (52.0 F)	21 of 100 (Routine)
Cloquet	United States	Record low minimum temperature	-7.2 C (19.0 F)	21 of 100 (Routine)
Milan 1NW	United States	Record low maximum temperature	6.1 C (43.0 F)	21 of 100 (Routine)
Orovada 3 W	United States	Record high maximum temperature	38.9 C (102.0 F)	21 of 100 (Routine)
Cape May 2 NW	United States	Record low minimum temperature	5.0 C (41.0 F)	21 of 100 (Routine)
Alexandria	United States	Record low maximum temperature	10.0 C (50.0 F)	21 of 100 (Routine)
Watertown Rgnl AP	United States	Record daily precipitation	25.4 mm (1.0 in)	21 of 100 (Routine)
Cape Borda Comparison	Australia	Record daily precipitation	22.9 mm (0.9 in)	20 of 100 (Routine)
East Anaconda	United States	Record daily precipitation	18.5 mm (0.7 in)	20 of 100 (Routine)
Leonora	Australia	Record daily precipitation	9.7 mm (0.38 in)	20 of 100 (Routine)
Tot-Ma	Russia	Record daily precipitation	20.9 mm (0.8 in)	20 of 100 (Routine)
Port Augusta (Carriewerloo STN	Australia	Record daily precipitation	5.1 mm (0.20 in)	20 of 100 (Routine)
Wilsons Patch	Australia	Record daily precipitation	15.0 mm (0.6 in)	20 of 100 (Routine)
Eucla	Australia	Record daily precipitation	16.5 mm (0.6 in)	20 of 100 (Routine)
Huron Rgnl AP	United States	Record daily precipitation	14.0 mm (0.6 in)	20 of 100 (Routine)
Gidgee Birrigrin	Australia	Record daily precipitation	10.7 mm (0.4 in)	20 of 100 (Routine)
Cap Madeleine	Canada	Record daily precipitation	14.7 mm (0.6 in)	20 of 100 (Routine)
Bezeck	Russia	Record daily precipitation	11.9 mm (0.5 in)	20 of 100 (Routine)
Meka Station	Australia	Record daily precipitation	4.1 mm (0.16 in)	20 of 100 (Routine)

Counts by Type and Timescale

433 records

Records set or tied on 30 September 1947 by type: Highest daily maximum 53, Lowest daily maximum 149, Highest daily minimum 50, Lowest daily minimum 76, Heaviest daily rainfall 101, Heaviest daily snowfall 1, Deepest snow cover 3.

Records on 30 September 1947 by type
Record type	Records
Highest daily maximum	53
Lowest daily maximum	149
Highest daily minimum	50
Lowest daily minimum	76
Heaviest daily rainfall	101
Heaviest daily snowfall	1
Deepest snow cover	3

Records on 30 September 1947 by timescale: all-time 0, monthly 24, daily 409.

How Much Records Were Beaten By

308 broken records

Margins by which the 308 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 40.0. Ties are not counted.

Top 20 by Significance

30 September 1947

Top 20 records on 30 September 1947 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 September 1947	Nanambinia, AU	daily rain	32.3 mm (1.3 in)	25.9 mm (1.0 in)	36 years	55 of 100 (Notable)
30 September 1947	Kojnas, RU	daily rain	27.6 mm (1.1 in)	20.0 mm (0.8 in)	16 years	47 of 100 (Notable)
30 September 1947	Noondoonia, AU	monthly rain	47.0 mm (1.9 in)	10.4 mm (0.4 in)	27 years	43 of 100 (Notable)
30 September 1947	Zanthus, AU	daily rain	33.3 mm (1.3 in)	22.6 mm (0.9 in)	16 years	42 of 100 (Notable)
30 September 1947	Shenkursk, RU	daily rain	27.8 mm (1.1 in)	14.6 mm (0.6 in)	10 years	41 of 100 (Notable)
30 September 1947	Cortland, US	monthly low max	6.1 C (43.0 F)	2.8 C (5.0 F)	47 years	34 of 100 (Routine)
30 September 1947	Jashpurnagar, IN	monthly rain	182.9 mm (7.2 in)	17.8 mm (0.7 in)	35 years	33 of 100 (Routine)
30 September 1947	Flandreau, US	daily rain	41.9 mm (1.6 in)	18.5 mm (0.7 in)	44 years	33 of 100 (Routine)
30 September 1947	Onaka, US	daily rain	25.7 mm (1.0 in)	16.8 mm (0.7 in)	36 years	33 of 100 (Routine)
30 September 1947	Dhulia, IN	daily rain	94.0 mm (3.7 in)	35.3 mm (1.4 in)	37 years	32 of 100 (Routine)
30 September 1947	New Westminster, CA	daily high max	25.6 C (78.1 F)	1.2 C (2.2 F)	70 years	31 of 100 (Routine)
30 September 1947	Clark, US	daily rain	27.9 mm (1.1 in)	17.0 mm (0.7 in)	44 years	30 of 100 (Routine)
30 September 1947	Drouin West, AU	daily rain	33.0 mm (1.3 in)	13.9 mm (0.5 in)	12 years	26 of 100 (Routine)
30 September 1947	Auburn, US	monthly low max	8.3 C (46.9 F)	0.6 C (1.1 F)	36 years	26 of 100 (Routine)
30 September 1947	Machilpur, IN	daily rain	25.4 mm (1.0 in)	17.8 mm (0.7 in)	36 years	25 of 100 (Routine)
30 September 1947	Childs, US	daily high min	25.0 C (77.0 F)	6.7 C (12.1 F)	16 years	25 of 100 (Routine)
30 September 1947	Seligman, US	daily high min	13.9 C (57.0 F)	3.9 C (7.0 F)	40 years	25 of 100 (Routine)
30 September 1947	Robe Comparison, AU	daily low max	10.6 C (51.1 F)	1.0 C (1.8 F)	47 years	24 of 100 (Routine)
30 September 1947	Karjat, IN	daily rain	73.7 mm (2.9 in)	33.1 mm (1.3 in)	16 years	24 of 100 (Routine)
30 September 1947	Magdalena, US	daily high min	13.9 C (57.0 F)	3.9 C (7.0 F)	36 years	24 of 100 (Routine)

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 1947

Records set or tied on this calendar date in each year from 1806 to 1947. 1947 had 433 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	523

Download the Data

Data for records on 1947-09-30: 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 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Margin	Records
0 to 5	255
5 to 10	26
10 to 15	12
15 to 20	7
20 to 25	4
25 to 30	1
30 to 35	1
35 to 40	2