Weather Records on 21 September 1937

487 weather records were set or tied worldwide on 21 September 1937. Highest significance: Dhond, IN.

Key Facts for 21 September 1937

On 21 September 1937, 487 weather records were set or tied at long-record stations worldwide.
311 were record highs and 92 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 2 monthly and 485 daily.
Dhond set a daily record precipitation of 91.2 mm (3.6 in) on 21 September 1937.
Across 155 earlier years (1805 to 2026) the same calendar date averaged 451 records.

Record Map

487 stations

487 station records on 21 September 1937 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 September 1937: highest significance records shown on the map
Station	Country	Type	Value	Significance
Dhond	India	Record daily precipitation	91.2 mm (3.6 in)	51 of 100 (Notable)
Lake City 2 E	United States	Record daily precipitation	91.4 mm (3.6 in)	46 of 100 (Notable)
Canyon Ferry	United States	Record daily precipitation	32.3 mm (1.3 in)	44 of 100 (Notable)
Helena Wb City	United States	Record daily precipitation	33.0 mm (1.3 in)	44 of 100 (Notable)
Bhadrachalam	India	Record daily precipitation	100.6 mm (4.0 in)	42 of 100 (Notable)
Yuma Wb City	United States	Record daily precipitation	40.6 mm (1.6 in)	42 of 100 (Notable)
Atmakur	India	Record daily precipitation	88.9 mm (3.5 in)	40 of 100 (Notable)
Nandyal	India	Record daily precipitation	101.6 mm (4.0 in)	39 of 100 (Notable)
Yellavaram	India	Record daily precipitation	101.6 mm (4.0 in)	38 of 100 (Notable)
Sullurpet	India	Record daily precipitation	46.5 mm (1.8 in)	32 of 100 (Routine)
Washim	India	Record daily precipitation	62.7 mm (2.5 in)	31 of 100 (Routine)
Velikie Luki	Russia	Record high maximum temperature	25.0 C (77.0 F)	29 of 100 (Routine)
Tunis	Tunisia	Record daily precipitation	31.1 mm (1.2 in)	28 of 100 (Routine)
Sidhout(Siddavat)	India	Record daily precipitation	73.2 mm (2.9 in)	27 of 100 (Routine)
Atmakur	India	Record daily precipitation	45.7 mm (1.8 in)	27 of 100 (Routine)
Athipettu	India	Record daily precipitation	55.4 mm (2.2 in)	27 of 100 (Routine)
Akola	India	Record daily precipitation	85.6 mm (3.4 in)	26 of 100 (Routine)
Parnu	Estonia	Record high minimum temperature	13.5 C (56.3 F)	24 of 100 (Routine)
Kargopol	Russia	Record high minimum temperature	13.3 C (55.9 F)	24 of 100 (Routine)
Bajramaly	Turkmenistan	Record high minimum temperature	21.1 C (70.0 F)	24 of 100 (Routine)
Bilgi	India	Record daily precipitation	59.7 mm (2.4 in)	23 of 100 (Routine)
Gila Bend 2SE	United States	Record low maximum temperature	27.8 C (82.0 F)	23 of 100 (Routine)
Decorah	United States	Record high maximum temperature	35.6 C (96.1 F)	23 of 100 (Routine)
Farmington 3NW	United States	Record high maximum temperature	35.6 C (96.1 F)	23 of 100 (Routine)
Knoxville	United States	Record high maximum temperature	36.1 C (97.0 F)	22 of 100 (Routine)
Morris W Cntrl Rsch & Outreach	United States	Record high maximum temperature	36.7 C (98.1 F)	22 of 100 (Routine)
Kingston	United States	Record low minimum temperature	0.0 C (32.0 F)	22 of 100 (Routine)
Hot Springs	United States	Record high minimum temperature	19.4 C (66.9 F)	22 of 100 (Routine)
Avon Park 2 W	United States	Record high maximum temperature	36.1 C (97.0 F)	21 of 100 (Routine)
Alapaha Exp STN	United States	Record daily precipitation	49.5 mm (1.9 in)	21 of 100 (Routine)
Afton	United States	Record high maximum temperature	35.0 C (95.0 F)	21 of 100 (Routine)
Indianola 1SW	United States	Record high maximum temperature	35.6 C (96.1 F)	21 of 100 (Routine)
Iowa Falls	United States	Record high maximum temperature	33.9 C (93.0 F)	21 of 100 (Routine)
Logan 1 WNW	United States	Record high maximum temperature	37.8 C (100.0 F)	21 of 100 (Routine)
Webster City	United States	Record high maximum temperature	35.0 C (95.0 F)	21 of 100 (Routine)
Oregon	United States	Record high maximum temperature	35.6 C (96.1 F)	21 of 100 (Routine)
Unionville	United States	Record high maximum temperature	37.2 C (99.0 F)	21 of 100 (Routine)
Bridgeton 1 NE	United States	Record low minimum temperature	4.4 C (39.9 F)	21 of 100 (Routine)
Setauket Strong	United States	Record low minimum temperature	6.7 C (44.1 F)	21 of 100 (Routine)
Fullerton 1 ESE	United States	Record high minimum temperature	18.9 C (66.0 F)	21 of 100 (Routine)
De Smet	United States	Record high minimum temperature	18.9 C (66.0 F)	21 of 100 (Routine)
Hakalau 142	United States	Record high maximum temperature	31.7 C (89.1 F)	21 of 100 (Routine)
Hailey 3 NNW	United States	Record daily precipitation	13.2 mm (0.5 in)	20 of 100 (Routine)
Butte Bert Mooney AP	United States	Record daily precipitation	17.8 mm (0.7 in)	20 of 100 (Routine)
Hillsdown	Canada	Record daily precipitation	19.6 mm (0.8 in)	20 of 100 (Routine)
Salmon AP	United States	Record daily precipitation	10.4 mm (0.4 in)	20 of 100 (Routine)
Koolunga	Australia	Record daily precipitation	8.9 mm (0.35 in)	20 of 100 (Routine)
Calgary Int'l A	Canada	Record daily precipitation	15.2 mm (0.6 in)	20 of 100 (Routine)
Saskatoon Diefenbaker Int'l A	Canada	Record daily precipitation	8.1 mm (0.32 in)	20 of 100 (Routine)
Melfort	Canada	Record high maximum temperature	32.8 C (91.0 F)	20 of 100 (Routine)
Kaikalur	India	Record daily precipitation	40.6 mm (1.6 in)	20 of 100 (Routine)
Shenkursk	Russia	Record high minimum temperature	12.5 C (54.5 F)	20 of 100 (Routine)
Skara 1	Sweden	Record daily precipitation	19.7 mm (0.8 in)	20 of 100 (Routine)
Lake Moraine	United States	Record high maximum temperature	21.1 C (70.0 F)	20 of 100 (Routine)
Tarpon Spgs Sewage Plt	United States	Record daily precipitation	51.8 mm (2.0 in)	20 of 100 (Routine)
Humboldt 3 W	United States	Record high maximum temperature	36.1 C (97.0 F)	20 of 100 (Routine)
Mt Ayr	United States	Record high maximum temperature	35.0 C (95.0 F)	20 of 100 (Routine)
Oskaloosa	United States	Record high maximum temperature	34.4 C (93.9 F)	20 of 100 (Routine)
Minneapolis Wb Dwtn	United States	Record high maximum temperature	34.4 C (93.9 F)	20 of 100 (Routine)
Elizabeth	United States	Record low minimum temperature	3.3 C (37.9 F)	20 of 100 (Routine)

Counts by Type and Timescale

487 records

Records set or tied on 21 September 1937 by type: Highest daily maximum 233, Lowest daily maximum 10, Highest daily minimum 78, Lowest daily minimum 82, Heaviest daily rainfall 84.

Records on 21 September 1937 by type
Record type	Records
Highest daily maximum	233
Lowest daily maximum	10
Highest daily minimum	78
Lowest daily minimum	82
Heaviest daily rainfall	84
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 21 September 1937 by timescale: all-time 0, monthly 2, daily 485.

How Much Records Were Beaten By

387 broken records

Margins by which the 387 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 81.8. Ties are not counted.

Top 20 by Significance

21 September 1937

Top 20 records on 21 September 1937 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 September 1937	Dhond, IN	daily rain	91.2 mm (3.6 in)	81.8 mm (3.2 in)	28 years	51 of 100 (Notable)
21 September 1937	Lake City 2 E, US	daily rain	91.4 mm (3.6 in)	56.3 mm (2.2 in)	39 years	46 of 100 (Notable)
21 September 1937	Canyon Ferry, US	daily rain	32.3 mm (1.3 in)	25.9 mm (1.0 in)	6 years	44 of 100 (Notable)
21 September 1937	Helena Wb City, US	daily rain	33.0 mm (1.3 in)	23.3 mm (0.9 in)	6 years	44 of 100 (Notable)
21 September 1937	Bhadrachalam, IN	daily rain	100.6 mm (4.0 in)	63.5 mm (2.5 in)	35 years	42 of 100 (Notable)
21 September 1937	Yuma Wb City, US	daily rain	40.6 mm (1.6 in)	40.6 mm (1.6 in)	43 years	42 of 100 (Notable)
21 September 1937	Atmakur, IN	daily rain	88.9 mm (3.5 in)	59.9 mm (2.4 in)	35 years	40 of 100 (Notable)
21 September 1937	Nandyal, IN	daily rain	101.6 mm (4.0 in)	58.4 mm (2.3 in)	24 years	39 of 100 (Notable)
21 September 1937	Yellavaram, IN	daily rain	101.6 mm (4.0 in)	59.7 mm (2.4 in)	27 years	38 of 100 (Notable)
21 September 1937	Sullurpet, IN	daily rain	46.5 mm (1.8 in)	41.4 mm (1.6 in)	26 years	32 of 100 (Routine)
21 September 1937	Washim, IN	daily rain	62.7 mm (2.5 in)	37.8 mm (1.5 in)	27 years	31 of 100 (Routine)
21 September 1937	Velikie Luki, RU	daily high max	25.0 C (77.0 F)	3.8 C (6.8 F)	54 years	29 of 100 (Routine)
21 September 1937	Tunis, TN	daily rain	31.1 mm (1.2 in)	12.5 mm (0.5 in)	49 years	28 of 100 (Routine)
21 September 1937	Sidhout(Siddavat), IN	daily rain	73.2 mm (2.9 in)	37.1 mm (1.5 in)	16 years	27 of 100 (Routine)
21 September 1937	Atmakur, IN	daily rain	45.7 mm (1.8 in)	31.5 mm (1.2 in)	16 years	27 of 100 (Routine)
21 September 1937	Athipettu, IN	daily rain	55.4 mm (2.2 in)	27.0 mm (1.1 in)	28 years	27 of 100 (Routine)
21 September 1937	Akola, IN	daily rain	85.6 mm (3.4 in)	28.4 mm (1.1 in)	22 years	26 of 100 (Routine)
21 September 1937	Parnu, EE	daily high min	13.5 C (56.3 F)	0.5 C (0.9 F)	57 years	24 of 100 (Routine)
21 September 1937	Kargopol, RU	daily high min	13.3 C (55.9 F)	3.6 C (6.5 F)	36 years	24 of 100 (Routine)
21 September 1937	Bajramaly, TM	daily high min	21.1 C (70.0 F)	3.9 C (7.0 F)	38 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

1805 to 1937

Records set or tied on this calendar date in each year from 1805 to 1937. 1937 had 487 records.

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

Records on 09-21 in each year
Year	Records
1805	1
1812	1
1825	2
1840	1
1841	1
1842	1
1848	1
1854	1
1856	2
1868	1
1872	2
1873	1
1877	1
1878	1
1881	1
1882	1
1884	1
1886	1
1888	2
1889	1
1891	10
1892	1
1893	10
1894	2
1895	3
1896	2
1897	6
1898	6
1899	3
1900	2
1901	5
1902	5
1903	8
1904	20
1905	12
1906	17
1907	10
1908	17
1909	10
1910	8
1911	18
1912	26
1913	37
1914	29
1915	34
1916	48
1917	28
1918	43
1919	54
1920	29
1921	64
1922	35
1923	232
1924	291
1925	278
1926	178
1927	165
1928	81
1929	232
1930	82
1931	681
1932	242
1933	193
1934	492
1935	199
1936	329
1937	487
1938	508
1939	308
1940	908
1941	416
1942	291
1943	407
1944	413
1945	507
1946	176
1947	534
1948	301
1949	298
1950	334
1951	241
1952	430
1953	382
1954	453
1955	752
1956	1,100
1957	366
1958	588
1959	513
1960	418
1961	441
1962	1,085
1963	306
1964	374
1965	1,088
1966	565
1967	577
1968	790
1969	593
1970	708
1971	645
1972	599
1973	421
1974	652
1975	528
1976	694
1977	918
1978	818
1979	736
1980	990
1981	696
1982	1,484
1983	2,207
1984	707
1985	796
1986	671
1987	965
1988	557
1989	1,002
1990	716
1991	1,021
1992	752
1993	911
1994	713
1995	2,002
1996	1,233
1997	1,112
1998	1,481
1999	1,025
2000	884
2001	718
2002	696
2003	959
2004	888
2005	1,143
2006	920
2007	742
2008	740
2009	715
2010	1,290
2011	542
2012	595
2013	769
2014	716
2015	565
2016	989
2017	1,178
2018	1,051
2019	833
2020	580
2021	465
2022	1,049
2023	783
2024	470
2025	591
2026	478

Download the Data

Data for records on 1937-09-21: 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 2026-10-15 (15 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	368
20 to 40	11
40 to 60	6
60 to 80	1
80 to 100	1