Weather Records on 15 September 1931

422 weather records were set or tied worldwide on 15 September 1931. Highest significance: Paris Stp, US.

Key Facts for 15 September 1931

On 15 September 1931, 422 weather records were set or tied at long-record stations worldwide.
295 were record highs and 50 were record lows, counting maximum and minimum temperature.
By timescale, 4 were all-time records, 27 monthly and 391 daily.
Paris Stp set an all-time record daily precipitation of 171.5 mm (6.8 in) on 15 September 1931.
Across 170 earlier years (1797 to 2026) the same calendar date averaged 413 records.

Record Map

422 stations

422 station records on 15 September 1931 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 15 September 1931: highest significance records shown on the map
Station	Country	Type	Value	Significance
Paris Stp	United States	Record daily precipitation	171.5 mm (6.8 in)	62 of 100 (Major)
Lancaster 4 WSW	United States	Record daily precipitation	65.0 mm (2.6 in)	48 of 100 (Notable)
Bilgi	India	Record daily precipitation	120.7 mm (4.8 in)	43 of 100 (Notable)
Bloomington Indiana UNIV	United States	Record daily precipitation	83.8 mm (3.3 in)	43 of 100 (Notable)
Hospet	India	Record daily precipitation	104.1 mm (4.1 in)	42 of 100 (Notable)
Cowles	United States	Record daily precipitation	66.3 mm (2.6 in)	40 of 100 (Notable)
Seymour 1 WSW	United States	Record daily precipitation	72.4 mm (2.9 in)	39 of 100 (Notable)
Charleston	United States	Record daily precipitation	102.1 mm (4.0 in)	38 of 100 (Notable)
Rockville	United States	Record daily precipitation	102.1 mm (4.0 in)	34 of 100 (Routine)
Tuscola	United States	Record daily precipitation	118.9 mm (4.7 in)	33 of 100 (Routine)
Ilkal	India	Record daily precipitation	101.6 mm (4.0 in)	30 of 100 (Routine)
Farmersburg	United States	Record daily precipitation	88.4 mm (3.5 in)	30 of 100 (Routine)
Springer	United States	Record daily precipitation	31.0 mm (1.2 in)	29 of 100 (Routine)
Emporia 1 S	United States	Record high minimum temperature	26.7 C (80.1 F)	28 of 100 (Routine)
Grayling	United States	Record daily precipitation	42.7 mm (1.7 in)	28 of 100 (Routine)
Harrisville	United States	Record daily precipitation	41.9 mm (1.6 in)	28 of 100 (Routine)
Sarajevo	Bosnia and Herzegovina	Record daily precipitation	29.3 mm (1.2 in)	27 of 100 (Routine)
Praha-Klementinum	Czech Republic	Record low minimum temperature	3.6 C (38.5 F)	25 of 100 (Routine)
Leipzig-Holzhausen	Germany	Record low minimum temperature	2.0 C (35.6 F)	25 of 100 (Routine)
Sparta 1 W	United States	Record high minimum temperature	25.6 C (78.1 F)	25 of 100 (Routine)
Columbus	United States	Record daily precipitation	61.0 mm (2.4 in)	25 of 100 (Routine)
Olathe 3E	United States	Record high minimum temperature	26.7 C (80.1 F)	25 of 100 (Routine)
Turners Falls	United States	Record high minimum temperature	25.6 C (78.1 F)	25 of 100 (Routine)
Raton	United States	Record daily precipitation	38.1 mm (1.5 in)	25 of 100 (Routine)
Columbia Wb City	United States	Record high minimum temperature	26.1 C (79.0 F)	25 of 100 (Routine)
Gunnedah Pool	Australia	Record high maximum temperature	28.9 C (84.0 F)	24 of 100 (Routine)
Sarajevo	Bosnia and Herzegovina	Record low maximum temperature	3.8 C (38.8 F)	24 of 100 (Routine)
Bathurst	Canada	Record high minimum temperature	16.7 C (62.1 F)	24 of 100 (Routine)
Sotchi	Russia	Record high maximum temperature	33.0 C (91.4 F)	24 of 100 (Routine)
Geryville (El-Bayadh)	Algeria	Record low minimum temperature	3.0 C (37.4 F)	23 of 100 (Routine)
Attarikhat	India	Record daily precipitation	56.4 mm (2.2 in)	23 of 100 (Routine)
Madison Sewage Plt	United States	Record daily precipitation	36.3 mm (1.4 in)	23 of 100 (Routine)
Brantford	Canada	Record high minimum temperature	20.0 C (68.0 F)	22 of 100 (Routine)
Munchen-Nymphenburg	Germany	Record low minimum temperature	0.5 C (32.9 F)	22 of 100 (Routine)
Basel Binningen	Switzerland	Record low minimum temperature	-0.2 C (31.6 F)	22 of 100 (Routine)
Sfax El-Maou	Tunisia	Record low minimum temperature	12.0 C (53.6 F)	22 of 100 (Routine)
Moncton	Canada	Record high maximum temperature	27.8 C (82.0 F)	21 of 100 (Routine)
Windsor Kings College	Canada	Record high maximum temperature	29.4 C (84.9 F)	21 of 100 (Routine)
Jaitanga Valley	India	Record daily precipitation	115.3 mm (4.5 in)	21 of 100 (Routine)
Denkanikottah	India	Record daily precipitation	66.5 mm (2.6 in)	21 of 100 (Routine)
Osage City	United States	Record high minimum temperature	27.2 C (81.0 F)	21 of 100 (Routine)
Taos	United States	Record high minimum temperature	13.9 C (57.0 F)	21 of 100 (Routine)
Quebec	Canada	Record daily precipitation	21.8 mm (0.9 in)	20 of 100 (Routine)
Santa Fe	United States	Record daily precipitation	6.6 mm (0.26 in)	20 of 100 (Routine)
Moncton	Canada	Record daily precipitation	22.6 mm (0.9 in)	20 of 100 (Routine)
Fort Simpson	Canada	Record daily precipitation	12.7 mm (0.5 in)	20 of 100 (Routine)
Pushmataha	United States	Record high minimum temperature	26.1 C (79.0 F)	20 of 100 (Routine)
Athens	United States	Record high minimum temperature	22.2 C (72.0 F)	20 of 100 (Routine)
Decatur Wtp	United States	Record daily precipitation	52.1 mm (2.1 in)	20 of 100 (Routine)
New England	United States	Record high minimum temperature	16.7 C (62.1 F)	20 of 100 (Routine)
Pine River 3 NE	United States	Record daily precipitation	30.2 mm (1.2 in)	20 of 100 (Routine)
Salzburg	Austria	Record low minimum temperature	3.0 C (37.4 F)	19 of 100 (Routine)
Sydney	Canada	Record high maximum temperature	26.7 C (80.1 F)	19 of 100 (Routine)
Umea	Sweden	Record low maximum temperature	7.0 C (44.6 F)	19 of 100 (Routine)
Stornoway Airport	United Kingdom	Record high minimum temperature	12.8 C (55.0 F)	19 of 100 (Routine)
Saguache	United States	Record high minimum temperature	13.3 C (55.9 F)	19 of 100 (Routine)
El Dorado	United States	Record high minimum temperature	27.2 C (81.0 F)	19 of 100 (Routine)
Greenville Dwtn AP	United States	Record high minimum temperature	21.7 C (71.1 F)	19 of 100 (Routine)
Blackburn	Australia	Record daily precipitation	20.8 mm (0.8 in)	18 of 100 (Routine)
Fredericton Unb	Canada	Record high maximum temperature	29.4 C (84.9 F)	18 of 100 (Routine)

Counts by Type and Timescale

422 records

Records set or tied on 15 September 1931 by type: Highest daily maximum 75, Lowest daily maximum 16, Highest daily minimum 220, Lowest daily minimum 34, Heaviest daily rainfall 76, Deepest snow cover 1.

Records on 15 September 1931 by type
Record type	Records
Highest daily maximum	75
Lowest daily maximum	16
Highest daily minimum	220
Lowest daily minimum	34
Heaviest daily rainfall	76
Heaviest daily snowfall	0
Deepest snow cover	1

Records on 15 September 1931 by timescale: all-time 4, monthly 27, daily 391.

How Much Records Were Beaten By

321 broken records

Margins by which the 321 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 76.8. Ties are not counted.

Top 20 by Significance

15 September 1931

Top 20 records on 15 September 1931 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 September 1931	Paris Stp, US	all-time rain	171.5 mm (6.8 in)	54.7 mm (2.2 in)	9 years	62 of 100 (Major)
15 September 1931	Lancaster 4 WSW, US	daily rain	65.0 mm (2.6 in)	45.9 mm (1.8 in)	36 years	48 of 100 (Notable)
15 September 1931	Bilgi, IN	daily rain	120.7 mm (4.8 in)	76.8 mm (3.0 in)	2 years	43 of 100 (Notable)
15 September 1931	Bloomington Indiana UNIV, US	daily rain	83.8 mm (3.3 in)	55.9 mm (2.2 in)	0 years	43 of 100 (Notable)
15 September 1931	Hospet, IN	daily rain	104.1 mm (4.1 in)	64.0 mm (2.5 in)	8 years	42 of 100 (Notable)
15 September 1931	Cowles, US	all-time rain	66.3 mm (2.6 in)	9.4 mm (0.37 in)	19 years	40 of 100 (Notable)
15 September 1931	Seymour 1 WSW, US	daily rain	72.4 mm (2.9 in)	48.3 mm (1.9 in)	0 years	39 of 100 (Notable)
15 September 1931	Charleston, US	daily rain	102.1 mm (4.0 in)	52.8 mm (2.1 in)	10 years	38 of 100 (Notable)
15 September 1931	Rockville, US	all-time rain	102.1 mm (4.0 in)	4.1 mm (0.16 in)	28 years	34 of 100 (Routine)
15 September 1931	Tuscola, US	all-time rain	118.9 mm (4.7 in)	12.2 mm (0.5 in)	10 years	33 of 100 (Routine)
15 September 1931	Ilkal, IN	monthly rain	101.6 mm (4.0 in)	19.8 mm (0.8 in)	21 years	30 of 100 (Routine)
15 September 1931	Farmersburg, US	daily rain	88.4 mm (3.5 in)	41.4 mm (1.6 in)	0 years	30 of 100 (Routine)
15 September 1931	Springer, US	daily rain	31.0 mm (1.2 in)	23.4 mm (0.9 in)	8 years	29 of 100 (Routine)
15 September 1931	Emporia 1 S, US	monthly high min	26.7 C (80.1 F)	2.3 C (4.1 F)	37 years	28 of 100 (Routine)
15 September 1931	Grayling, US	daily rain	42.7 mm (1.7 in)	19.8 mm (0.8 in)	16 years	28 of 100 (Routine)
15 September 1931	Harrisville, US	daily rain	41.9 mm (1.6 in)	15.2 mm (0.6 in)	18 years	28 of 100 (Routine)
15 September 1931	Sarajevo, BA	daily rain	29.3 mm (1.2 in)	13.2 mm (0.5 in)	28 years	27 of 100 (Routine)
15 September 1931	Praha-Klementinum, CZ	daily low min	3.6 C (38.5 F)	1.3 C (2.3 F)	36 years	25 of 100 (Routine)
15 September 1931	Leipzig-Holzhausen, DE	daily low min	2.0 C (35.6 F)	2.1 C (3.8 F)	43 years	25 of 100 (Routine)
15 September 1931	Sparta 1 W, US	monthly high min	25.6 C (78.1 F)	1.2 C (2.2 F)	33 years	25 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

1797 to 1931

Records set or tied on this calendar date in each year from 1797 to 1931. 1931 had 422 records.

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

Records on 09-15 in each year
Year	Records
1797	1
1803	1
1806	2
1810	1
1816	1
1818	1
1823	2
1833	1
1836	1
1837	2
1839	1
1841	1
1848	1
1850	1
1851	1
1854	2
1856	1
1857	1
1859	1
1864	1
1865	2
1866	1
1867	2
1868	1
1869	1
1872	1
1873	2
1876	2
1877	2
1880	1
1881	1
1882	6
1884	3
1885	4
1886	2
1887	3
1888	1
1889	5
1890	1
1894	4
1895	1
1897	1
1898	3
1899	3
1900	1
1901	12
1902	7
1903	31
1904	30
1905	16
1906	6
1907	7
1908	16
1909	16
1910	2
1911	40
1912	64
1913	43
1914	18
1915	94
1916	44
1917	50
1918	50
1919	52
1920	164
1921	122
1922	53
1923	193
1924	103
1925	112
1926	134
1927	539
1928	86
1929	99
1930	235
1931	422
1932	295
1933	322
1934	351
1935	463
1936	460
1937	337
1938	247
1939	1,098
1940	181
1941	276
1942	278
1943	360
1944	396
1945	418
1946	411
1947	621
1948	557
1949	523
1950	750
1951	283
1952	455
1953	400
1954	518
1955	532
1956	646
1957	449
1958	294
1959	844
1960	410
1961	586
1962	557
1963	455
1964	839
1965	614
1966	534
1967	578
1968	429
1969	362
1970	1,157
1971	598
1972	356
1973	774
1974	386
1975	739
1976	667
1977	400
1978	628
1979	1,022
1980	563
1981	613
1982	1,315
1983	756
1984	766
1985	764
1986	928
1987	719
1988	818
1989	955
1990	911
1991	1,165
1992	919
1993	2,227
1994	1,363
1995	723
1996	1,212
1997	1,177
1998	1,768
1999	858
2000	1,175
2001	837
2002	1,212
2003	855
2004	893
2005	1,123
2006	1,042
2007	946
2008	1,153
2009	773
2010	913
2011	1,170
2012	568
2013	854
2014	443
2015	997
2016	988
2017	825
2018	874
2019	538
2020	785
2021	467
2022	392
2023	507
2024	681
2025	503
2026	779

Download the Data

Data for records on 1931-09-15: 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	289
10 to 20	17
20 to 30	3
30 to 40	3
40 to 50	3
50 to 60	3
60 to 70	2
70 to 80	1