Weather Records on 18 September 1931

429 weather records were set or tied worldwide on 18 September 1931. Highest significance: Hungund, IN.

Key Facts for 18 September 1931

On 18 September 1931, 429 weather records were set or tied at long-record stations worldwide.
259 were record highs and 9 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 8 monthly and 418 daily.
Hungund set an all-time record daily precipitation of 149.9 mm (5.9 in) on 18 September 1931.
Across 163 earlier years (1803 to 2026) the same calendar date averaged 421 records.

Record Map

429 stations

429 station records on 18 September 1931 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 September 1931: highest significance records shown on the map
Station	Country	Type	Value	Significance
Hungund	India	Record daily precipitation	149.9 mm (5.9 in)	59 of 100 (Notable)
Ron	India	Record daily precipitation	109.2 mm (4.3 in)	51 of 100 (Notable)
Springfield Elmwood Av	United States	Record daily precipitation	54.1 mm (2.1 in)	41 of 100 (Notable)
Rowlesburg 1	United States	Record daily precipitation	50.8 mm (2.0 in)	41 of 100 (Notable)
Childers Post Office	Australia	Record daily precipitation	45.7 mm (1.8 in)	37 of 100 (Notable)
Razole(Rajole)	India	Record daily precipitation	83.6 mm (3.3 in)	37 of 100 (Notable)
Holdrege	United States	Record daily precipitation	63.0 mm (2.5 in)	36 of 100 (Notable)
Urvakonda	India	Record daily precipitation	56.6 mm (2.2 in)	35 of 100 (Notable)
Poona	India	Record daily precipitation	119.4 mm (4.7 in)	33 of 100 (Routine)
Bhatkal	India	Record daily precipitation	158.5 mm (6.2 in)	31 of 100 (Routine)
Sirsi	India	Record daily precipitation	54.6 mm (2.1 in)	31 of 100 (Routine)
Circleville	United States	Record daily precipitation	30.5 mm (1.2 in)	31 of 100 (Routine)
Chatrapur	India	Record daily precipitation	97.8 mm (3.9 in)	29 of 100 (Routine)
Hillsboro	United States	Record daily precipitation	34.3 mm (1.4 in)	29 of 100 (Routine)
Landsborough Post Office	Australia	Record daily precipitation	34.0 mm (1.3 in)	28 of 100 (Routine)
Greensboro Lock 7	United States	Record daily precipitation	35.6 mm (1.4 in)	27 of 100 (Routine)
Morgantown 1	United States	Record daily precipitation	43.2 mm (1.7 in)	27 of 100 (Routine)
Baindur	India	Record daily precipitation	86.9 mm (3.4 in)	26 of 100 (Routine)
Storm Lake	United States	Record daily precipitation	30.2 mm (1.2 in)	26 of 100 (Routine)
Confluence 1 NW	United States	Record daily precipitation	33.0 mm (1.3 in)	26 of 100 (Routine)
Fairmont	United States	Record daily precipitation	33.0 mm (1.3 in)	26 of 100 (Routine)
Muddebihal	India	Record daily precipitation	48.3 mm (1.9 in)	25 of 100 (Routine)
Prathipadu	India	Record daily precipitation	80.5 mm (3.2 in)	24 of 100 (Routine)
Bhimunipatnam	India	Record daily precipitation	74.9 mm (2.9 in)	24 of 100 (Routine)
Nargund	India	Record daily precipitation	61.0 mm (2.4 in)	24 of 100 (Routine)
Udipi	India	Record daily precipitation	78.0 mm (3.1 in)	24 of 100 (Routine)
Dhond	India	Record daily precipitation	99.8 mm (3.9 in)	24 of 100 (Routine)
Aska	India	Record daily precipitation	76.2 mm (3.0 in)	24 of 100 (Routine)
Louisville 1 E	United States	Record high maximum temperature	38.3 C (100.9 F)	24 of 100 (Routine)
Grantsville	United States	Record daily precipitation	29.0 mm (1.1 in)	24 of 100 (Routine)
Uniontown 1 NE	United States	Record daily precipitation	31.2 mm (1.2 in)	23 of 100 (Routine)
Yandina Post Office	Australia	Record daily precipitation	42.2 mm (1.7 in)	22 of 100 (Routine)
Wilmington Wb City	United States	Record high maximum temperature	36.7 C (98.1 F)	22 of 100 (Routine)
Ramdurg	India	Record daily precipitation	69.1 mm (2.7 in)	21 of 100 (Routine)
Badami	India	Record daily precipitation	66.0 mm (2.6 in)	21 of 100 (Routine)
Santa Fe	United States	Record daily precipitation	24.9 mm (1.0 in)	20 of 100 (Routine)
Grenfell	Canada	Record daily precipitation	19.3 mm (0.8 in)	20 of 100 (Routine)
Burnie (No 1)	Australia	Record daily precipitation	22.9 mm (0.9 in)	20 of 100 (Routine)
Tobolsk	Russia	Record daily precipitation	16.0 mm (0.6 in)	20 of 100 (Routine)
Ellensburg	United States	Record daily precipitation	6.6 mm (0.26 in)	20 of 100 (Routine)
Princeton	Canada	Record daily precipitation	17.8 mm (0.7 in)	20 of 100 (Routine)
Battle Mtn	United States	Record daily precipitation	10.2 mm (0.4 in)	20 of 100 (Routine)
Low Head (Comparison)	Australia	Record daily precipitation	9.7 mm (0.38 in)	20 of 100 (Routine)
Joseph	United States	Record daily precipitation	10.7 mm (0.4 in)	20 of 100 (Routine)
Gooty	India	Record daily precipitation	48.5 mm (1.9 in)	20 of 100 (Routine)
Kanuparthi	India	Record daily precipitation	36.8 mm (1.4 in)	20 of 100 (Routine)
Nellore	India	Record daily precipitation	40.6 mm (1.6 in)	20 of 100 (Routine)
Saundatti	India	Record daily precipitation	22.6 mm (0.9 in)	20 of 100 (Routine)
Hadagalli	India	Record daily precipitation	54.4 mm (2.1 in)	20 of 100 (Routine)
Caguas	Puerto Rico [United States]	Record daily precipitation	41.1 mm (1.6 in)	20 of 100 (Routine)
Wetumpka	United States	Record high maximum temperature	40.6 C (105.1 F)	20 of 100 (Routine)
Moab	United States	Record high minimum temperature	20.0 C (68.0 F)	20 of 100 (Routine)
Salem AP (McNary Field)	United States	Record daily precipitation	24.4 mm (1.0 in)	20 of 100 (Routine)
Kavali	India	Record daily precipitation	26.7 mm (1.1 in)	19 of 100 (Routine)
Minden	United States	Record daily precipitation	43.2 mm (1.7 in)	19 of 100 (Routine)
Greenville Dwtn AP	United States	Record high maximum temperature	36.1 C (97.0 F)	19 of 100 (Routine)
Trenton 1 NNE	United States	Record high maximum temperature	39.4 C (102.9 F)	19 of 100 (Routine)
Winnsboro	United States	Record high maximum temperature	38.3 C (100.9 F)	19 of 100 (Routine)
El Paso	United States	Record daily precipitation	13.2 mm (0.5 in)	19 of 100 (Routine)
Yengarie Railway Station	Australia	Record daily precipitation	10.2 mm (0.4 in)	18 of 100 (Routine)

Counts by Type and Timescale

429 records

Records set or tied on 18 September 1931 by type: Highest daily maximum 130, Lowest daily maximum 6, Highest daily minimum 129, Lowest daily minimum 3, Heaviest daily rainfall 161.

Records on 18 September 1931 by type
Record type	Records
Highest daily maximum	130
Lowest daily maximum	6
Highest daily minimum	129
Lowest daily minimum	3
Heaviest daily rainfall	161
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 18 September 1931 by timescale: all-time 3, monthly 8, daily 418.

How Much Records Were Beaten By

336 broken records

Margins by which the 336 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 76.4. Ties are not counted.

Top 20 by Significance

18 September 1931

Top 20 records on 18 September 1931 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 September 1931	Hungund, IN	all-time rain	149.9 mm (5.9 in)	52.1 mm (2.1 in)	22 years	59 of 100 (Notable)
18 September 1931	Ron, IN	daily rain	109.2 mm (4.3 in)	76.4 mm (3.0 in)	28 years	51 of 100 (Notable)
18 September 1931	Springfield Elmwood Av, US	daily rain	54.1 mm (2.1 in)	31.2 mm (1.2 in)	24 years	41 of 100 (Notable)
18 September 1931	Rowlesburg 1, US	daily rain	50.8 mm (2.0 in)	30.5 mm (1.2 in)	17 years	41 of 100 (Notable)
18 September 1931	Childers Post Office, AU	daily rain	45.7 mm (1.8 in)	38.1 mm (1.5 in)	16 years	37 of 100 (Notable)
18 September 1931	Razole(Rajole), IN	daily rain	83.6 mm (3.3 in)	60.7 mm (2.4 in)	22 years	37 of 100 (Notable)
18 September 1931	Holdrege, US	daily rain	63.0 mm (2.5 in)	39.4 mm (1.6 in)	12 years	36 of 100 (Notable)
18 September 1931	Urvakonda, IN	daily rain	56.6 mm (2.2 in)	41.4 mm (1.6 in)	28 years	35 of 100 (Notable)
18 September 1931	Poona, IN	all-time rain	119.4 mm (4.7 in)	5.1 mm (0.20 in)	26 years	33 of 100 (Routine)
18 September 1931	Bhatkal, IN	monthly rain	158.5 mm (6.2 in)	26.2 mm (1.0 in)	29 years	31 of 100 (Routine)
18 September 1931	Sirsi, IN	daily rain	54.6 mm (2.1 in)	29.7 mm (1.2 in)	12 years	31 of 100 (Routine)
18 September 1931	Circleville, US	daily rain	30.5 mm (1.2 in)	22.9 mm (0.9 in)	17 years	31 of 100 (Routine)
18 September 1931	Chatrapur, IN	daily rain	97.8 mm (3.9 in)	44.5 mm (1.8 in)	22 years	29 of 100 (Routine)
18 September 1931	Hillsboro, US	daily rain	34.3 mm (1.4 in)	21.9 mm (0.9 in)	24 years	29 of 100 (Routine)
18 September 1931	Landsborough Post Office, AU	daily rain	34.0 mm (1.3 in)	21.8 mm (0.9 in)	31 years	28 of 100 (Routine)
18 September 1931	Greensboro Lock 7, US	daily rain	35.6 mm (1.4 in)	19.9 mm (0.8 in)	17 years	27 of 100 (Routine)
18 September 1931	Morgantown 1, US	daily rain	43.2 mm (1.7 in)	22.9 mm (0.9 in)	4 years	27 of 100 (Routine)
18 September 1931	Baindur, IN	daily rain	86.9 mm (3.4 in)	52.6 mm (2.1 in)	0 years	26 of 100 (Routine)
18 September 1931	Storm Lake, US	daily rain	30.2 mm (1.2 in)	29.2 mm (1.1 in)	18 years	26 of 100 (Routine)
18 September 1931	Confluence 1 NW, US	daily rain	33.0 mm (1.3 in)	19.8 mm (0.8 in)	17 years	26 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

1803 to 1931

Records set or tied on this calendar date in each year from 1803 to 1931. 1931 had 429 records.

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

Records on 09-18 in each year
Year	Records
1803	1
1811	1
1814	1
1819	1
1829	1
1832	1
1834	1
1835	1
1837	2
1847	2
1848	1
1849	1
1851	4
1859	1
1861	1
1865	1
1869	1
1871	1
1875	1
1876	2
1877	1
1879	1
1880	1
1881	1
1882	1
1885	1
1886	4
1889	6
1890	1
1891	1
1893	4
1894	2
1895	2
1896	4
1897	3
1898	5
1899	3
1900	2
1901	10
1902	8
1903	58
1904	6
1905	22
1906	16
1907	4
1908	11
1909	17
1910	5
1911	8
1912	43
1913	44
1914	56
1915	41
1916	58
1917	99
1918	57
1919	48
1920	56
1921	213
1922	45
1923	114
1924	62
1925	269
1926	205
1927	189
1928	114
1929	309
1930	124
1931	429
1932	226
1933	370
1934	188
1935	281
1936	155
1937	422
1938	373
1939	190
1940	402
1941	318
1942	1,001
1943	624
1944	503
1945	732
1946	576
1947	927
1948	427
1949	356
1950	370
1951	320
1952	340
1953	245
1954	446
1955	672
1956	587
1957	429
1958	491
1959	829
1960	351
1961	478
1962	360
1963	453
1964	282
1965	1,172
1966	498
1967	357
1968	763
1969	424
1970	377
1971	1,245
1972	691
1973	593
1974	559
1975	976
1976	615
1977	619
1978	1,162
1979	709
1980	652
1981	1,671
1982	603
1983	936
1984	951
1985	636
1986	730
1987	1,244
1988	997
1989	778
1990	904
1991	1,377
1992	821
1993	747
1994	852
1995	935
1996	1,237
1997	935
1998	1,038
1999	583
2000	1,146
2001	993
2002	828
2003	815
2004	1,027
2005	781
2006	1,309
2007	670
2008	697
2009	692
2010	1,040
2011	1,050
2012	922
2013	666
2014	682
2015	934
2016	893
2017	518
2018	1,200
2019	768
2020	682
2021	582
2022	613
2023	639
2024	687
2025	471
2026	864

Download the Data

Data for records on 1931-09-18: 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 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Margin	Records
0 to 10	277
10 to 20	28
20 to 30	17
30 to 40	7
40 to 50	2
50 to 60	3
60 to 70	1
70 to 80	1