Weather Records on 17 September 1931

564 weather records were set or tied worldwide on 17 September 1931. Highest significance: Marlborough Post Office, AU.

Key Facts for 17 September 1931

On 17 September 1931, 564 weather records were set or tied at long-record stations worldwide.
426 were record highs and 17 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 23 monthly and 541 daily.
Marlborough Post Office set a monthly record daily precipitation of 85.1 mm (3.4 in) on 17 September 1931.
Across 164 earlier years (1796 to 2026) the same calendar date averaged 422 records.

Record Map

564 stations

564 station records on 17 September 1931 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 September 1931: highest significance records shown on the map
Station	Country	Type	Value	Significance
Marlborough Post Office	Australia	Record daily precipitation	85.1 mm (3.4 in)	68 of 100 (Major)
Georgetown Post Office	Australia	Record daily precipitation	118.6 mm (4.7 in)	63 of 100 (Major)
Charters Towers Post Office	Australia	Record daily precipitation	104.1 mm (4.1 in)	56 of 100 (Notable)
Nebo	Australia	Record daily precipitation	61.7 mm (2.4 in)	45 of 100 (Notable)
Lyndhurst Station	Australia	Record daily precipitation	36.1 mm (1.4 in)	43 of 100 (Notable)
Collaroy Station	Australia	Record daily precipitation	86.4 mm (3.4 in)	42 of 100 (Notable)
Balfes Creek Post Office	Australia	Record daily precipitation	40.6 mm (1.6 in)	42 of 100 (Notable)
Pentland Post Office	Australia	Record daily precipitation	40.6 mm (1.6 in)	38 of 100 (Notable)
Rockhampton Post Office	Australia	Record daily precipitation	44.5 mm (1.8 in)	38 of 100 (Notable)
Gatcombe Head	Australia	Record daily precipitation	47.0 mm (1.9 in)	37 of 100 (Notable)
Queenton	Australia	Record daily precipitation	105.4 mm (4.1 in)	34 of 100 (Routine)
Gracemere Russell St	Australia	Record daily precipitation	43.2 mm (1.7 in)	33 of 100 (Routine)
Flat Top Island	Australia	Record daily precipitation	31.8 mm (1.3 in)	32 of 100 (Routine)
Madras/Minambakkam	India	Record daily precipitation	86.4 mm (3.4 in)	32 of 100 (Routine)
Ft Stanton	United States	Record daily precipitation	41.1 mm (1.6 in)	32 of 100 (Routine)
St Lawrence Post Office	Australia	Record daily precipitation	63.8 mm (2.5 in)	30 of 100 (Routine)
Debrecen Airport	Hungary	Record daily precipitation	26.8 mm (1.1 in)	29 of 100 (Routine)
St Ignace	United States	Record daily precipitation	71.6 mm (2.8 in)	29 of 100 (Routine)
Kearney 4 NE	United States	Record daily precipitation	48.3 mm (1.9 in)	28 of 100 (Routine)
Bustard Head Lighthouse	Australia	Record daily precipitation	70.1 mm (2.8 in)	27 of 100 (Routine)
Cape Capricorn Lighthouse	Australia	Record daily precipitation	69.1 mm (2.7 in)	27 of 100 (Routine)
Gladstone Post Office	Australia	Record daily precipitation	38.1 mm (1.5 in)	27 of 100 (Routine)
Purushottampur	India	Record daily precipitation	147.8 mm (5.8 in)	27 of 100 (Routine)
Sellheim	Australia	Record daily precipitation	34.3 mm (1.4 in)	26 of 100 (Routine)
Ron	India	Record daily precipitation	68.6 mm (2.7 in)	25 of 100 (Routine)
Aleksandrovsk-Sahalinskij	Russia	Record daily precipitation	28.2 mm (1.1 in)	25 of 100 (Routine)
El Dorado	United States	Record high maximum temperature	41.7 C (107.1 F)	25 of 100 (Routine)
Cumberland Station	Australia	Record daily precipitation	26.7 mm (1.1 in)	24 of 100 (Routine)
Kabra Railway STN	Australia	Record daily precipitation	39.9 mm (1.6 in)	24 of 100 (Routine)
Ketty	India	Record daily precipitation	101.6 mm (4.0 in)	24 of 100 (Routine)
Minden	United States	Record high minimum temperature	25.6 C (78.1 F)	24 of 100 (Routine)
Pacific Salt	Australia	Record daily precipitation	43.2 mm (1.7 in)	23 of 100 (Routine)
Luz (Estacao)	Brazil	Record daily precipitation	27.9 mm (1.1 in)	23 of 100 (Routine)
Bloomfield	Canada	Record daily precipitation	25.4 mm (1.0 in)	23 of 100 (Routine)
Petoskey	United States	Record daily precipitation	34.5 mm (1.4 in)	23 of 100 (Routine)
Uluberia	India	Record daily precipitation	64.8 mm (2.6 in)	22 of 100 (Routine)
Decatur Wtp	United States	Record high minimum temperature	24.4 C (75.9 F)	22 of 100 (Routine)
Sedan	United States	Record high maximum temperature	40.6 C (105.1 F)	22 of 100 (Routine)
Lamar 7N	United States	Record high maximum temperature	38.9 C (102.0 F)	22 of 100 (Routine)
Watertown	United States	Record daily precipitation	40.1 mm (1.6 in)	22 of 100 (Routine)
Mount McConnell	Australia	Record daily precipitation	79.2 mm (3.1 in)	21 of 100 (Routine)
Westwood Store	Australia	Record daily precipitation	25.1 mm (1.0 in)	21 of 100 (Routine)
Neosho	United States	Record high maximum temperature	37.8 C (100.0 F)	21 of 100 (Routine)
Little Falls City Rsch	United States	Record daily precipitation	43.9 mm (1.7 in)	21 of 100 (Routine)
Rocky Mt	United States	Record high maximum temperature	34.4 C (93.9 F)	21 of 100 (Routine)
Oak Park Station	Australia	Record daily precipitation	16.0 mm (0.6 in)	20 of 100 (Routine)
Elgin Downs	Australia	Record daily precipitation	17.8 mm (0.7 in)	20 of 100 (Routine)
Eton Police Station	Australia	Record daily precipitation	15.5 mm (0.6 in)	20 of 100 (Routine)
Clarke River Telecom	Australia	Record daily precipitation	13.0 mm (0.5 in)	20 of 100 (Routine)
Mackay Post Office	Australia	Record daily precipitation	15.0 mm (0.6 in)	20 of 100 (Routine)
Miriam Vale	Australia	Record daily precipitation	39.1 mm (1.5 in)	20 of 100 (Routine)
Stanwell Post Office	Australia	Record daily precipitation	30.2 mm (1.2 in)	20 of 100 (Routine)
Kalghatgi	India	Record daily precipitation	29.7 mm (1.2 in)	20 of 100 (Routine)
Tiruvallur	India	Record daily precipitation	52.6 mm (2.1 in)	20 of 100 (Routine)
Arad	Romania	Record daily precipitation	22.2 mm (0.9 in)	20 of 100 (Routine)
Fayetteville (Pwc)	United States	Record high maximum temperature	38.9 C (102.0 F)	20 of 100 (Routine)
Raleigh State UNIV	United States	Record high maximum temperature	36.1 C (97.0 F)	20 of 100 (Routine)
Mt Garnet Post Office	Australia	Record daily precipitation	8.9 mm (0.35 in)	19 of 100 (Routine)
Mingela Post Office	Australia	Record daily precipitation	8.9 mm (0.35 in)	19 of 100 (Routine)
Charters Towers Post Office	Australia	Record low maximum temperature	22.2 C (72.0 F)	19 of 100 (Routine)

Counts by Type and Timescale

564 records

Records set or tied on 17 September 1931 by type: Highest daily maximum 169, Lowest daily maximum 9, Highest daily minimum 257, Lowest daily minimum 8, Heaviest daily rainfall 121.

Records on 17 September 1931 by type
Record type	Records
Highest daily maximum	169
Lowest daily maximum	9
Highest daily minimum	257
Lowest daily minimum	8
Heaviest daily rainfall	121
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 17 September 1931 by timescale: all-time 0, monthly 23, daily 541.

How Much Records Were Beaten By

416 broken records

Margins by which the 416 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 118.6. Ties are not counted.

Top 20 by Significance

17 September 1931

Top 20 records on 17 September 1931 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 September 1931	Marlborough Post Office, AU	monthly rain	85.1 mm (3.4 in)	41.9 mm (1.6 in)	40 years	68 of 100 (Major)
17 September 1931	Georgetown Post Office, AU	daily rain	118.6 mm (4.7 in)	118.6 mm (4.7 in)	58 years	63 of 100 (Major)
17 September 1931	Charters Towers Post Office, AU	monthly rain	104.1 mm (4.1 in)	38.8 mm (1.5 in)	41 years	56 of 100 (Notable)
17 September 1931	Nebo, AU	daily rain	61.7 mm (2.4 in)	46.5 mm (1.8 in)	28 years	45 of 100 (Notable)
17 September 1931	Lyndhurst Station, AU	daily rain	36.1 mm (1.4 in)	35.8 mm (1.4 in)	16 years	43 of 100 (Notable)
17 September 1931	Collaroy Station, AU	monthly rain	86.4 mm (3.4 in)	28.5 mm (1.1 in)	10 years	42 of 100 (Notable)
17 September 1931	Balfes Creek Post Office, AU	daily rain	40.6 mm (1.6 in)	40.6 mm (1.6 in)	40 years	42 of 100 (Notable)
17 September 1931	Pentland Post Office, AU	daily rain	40.6 mm (1.6 in)	35.0 mm (1.4 in)	28 years	38 of 100 (Notable)
17 September 1931	Rockhampton Post Office, AU	daily rain	44.5 mm (1.8 in)	28.2 mm (1.1 in)	35 years	38 of 100 (Notable)
17 September 1931	Gatcombe Head, AU	daily rain	47.0 mm (1.9 in)	37.9 mm (1.5 in)	16 years	37 of 100 (Notable)
17 September 1931	Queenton, AU	monthly rain	105.4 mm (4.1 in)	23.6 mm (0.9 in)	24 years	34 of 100 (Routine)
17 September 1931	Gracemere Russell St, AU	daily rain	43.2 mm (1.7 in)	33.8 mm (1.3 in)	16 years	33 of 100 (Routine)
17 September 1931	Flat Top Island, AU	daily rain	31.8 mm (1.3 in)	29.3 mm (1.2 in)	28 years	32 of 100 (Routine)
17 September 1931	Madras/Minambakkam, IN	daily rain	86.4 mm (3.4 in)	41.9 mm (1.6 in)	16 years	32 of 100 (Routine)
17 September 1931	Ft Stanton, US	daily rain	41.1 mm (1.6 in)	25.9 mm (1.0 in)	24 years	32 of 100 (Routine)
17 September 1931	St Lawrence Post Office, AU	monthly rain	63.8 mm (2.5 in)	3.1 mm (0.12 in)	40 years	30 of 100 (Routine)
17 September 1931	Debrecen Airport, HU	daily rain	26.8 mm (1.1 in)	15.4 mm (0.6 in)	4 years	29 of 100 (Routine)
17 September 1931	St Ignace, US	monthly rain	71.6 mm (2.8 in)	6.1 mm (0.24 in)	31 years	29 of 100 (Routine)
17 September 1931	Kearney 4 NE, US	daily rain	48.3 mm (1.9 in)	29.0 mm (1.1 in)	8 years	28 of 100 (Routine)
17 September 1931	Bustard Head Lighthouse, AU	monthly rain	70.1 mm (2.8 in)	9.1 mm (0.36 in)	13 years	27 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

1796 to 1931

Records set or tied on this calendar date in each year from 1796 to 1931. 1931 had 564 records.

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

Records on 09-17 in each year
Year	Records
1796	1
1797	1
1805	1
1833	1
1834	1
1837	2
1845	1
1847	3
1848	1
1850	1
1851	2
1853	2
1854	2
1859	1
1862	1
1867	1
1870	1
1871	1
1872	1
1873	1
1874	1
1875	1
1877	1
1881	1
1882	2
1884	3
1885	3
1886	6
1888	2
1889	8
1891	1
1893	3
1894	1
1895	4
1896	9
1897	4
1898	7
1899	1
1900	4
1901	5
1902	5
1903	28
1904	2
1905	17
1906	10
1907	15
1908	13
1909	7
1910	38
1911	15
1912	17
1913	28
1914	38
1915	48
1916	40
1917	255
1918	41
1919	21
1920	40
1921	66
1922	47
1923	159
1924	80
1925	338
1926	154
1927	420
1928	78
1929	168
1930	147
1931	564
1932	425
1933	415
1934	246
1935	321
1936	219
1937	463
1938	363
1939	294
1940	326
1941	328
1942	581
1943	513
1944	403
1945	614
1946	620
1947	680
1948	630
1949	292
1950	412
1951	359
1952	263
1953	344
1954	449
1955	649
1956	437
1957	405
1958	806
1959	1,210
1960	385
1961	657
1962	432
1963	297
1964	559
1965	1,394
1966	523
1967	331
1968	691
1969	352
1970	412
1971	898
1972	556
1973	638
1974	491
1975	478
1976	636
1977	641
1978	764
1979	804
1980	794
1981	1,155
1982	606
1983	862
1984	1,006
1985	448
1986	1,314
1987	926
1988	982
1989	863
1990	650
1991	1,407
1992	686
1993	950
1994	986
1995	1,145
1996	1,342
1997	1,057
1998	1,137
1999	1,102
2000	1,318
2001	895
2002	1,025
2003	586
2004	872
2005	1,042
2006	1,344
2007	752
2008	886
2009	871
2010	907
2011	1,116
2012	597
2013	1,253
2014	571
2015	953
2016	707
2017	455
2018	899
2019	774
2020	651
2021	345
2022	313
2023	646
2024	954
2025	634
2026	968

Download the Data

Data for records on 1931-09-17: 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 20	393
20 to 40	18
40 to 60	4
60 to 80	0
80 to 100	0
100 to 120	1