Weather Records on 21 April 1937

416 weather records were set or tied worldwide on 21 April 1937. Highest significance: Amraoti, IN.

Key Facts for 21 April 1937

On 21 April 1937, 416 weather records were set or tied at long-record stations worldwide.
44 were record highs and 57 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 7 monthly and 409 daily.
Amraoti set a daily record precipitation of 33.8 mm (1.3 in) on 21 April 1937.
Across 159 earlier years (1793 to 2026) the same calendar date averaged 463 records.

Record Map

416 stations

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

Weather records on 21 April 1937: highest significance records shown on the map
Station	Country	Type	Value	Significance
Amraoti	India	Record daily precipitation	33.8 mm (1.3 in)	53 of 100 (Notable)
Paud	India	Record daily precipitation	27.2 mm (1.1 in)	49 of 100 (Notable)
Mykland	Norway	Record daily precipitation	31.5 mm (1.2 in)	47 of 100 (Notable)
Prathipadu	India	Record daily precipitation	58.4 mm (2.3 in)	45 of 100 (Notable)
Milwaukee Wb City	United States	Record daily precipitation	47.0 mm (1.9 in)	45 of 100 (Notable)
Huntsville	Canada	Record daily precipitation	29.2 mm (1.1 in)	44 of 100 (Notable)
Kandukur	India	Record daily precipitation	31.8 mm (1.3 in)	44 of 100 (Notable)
Owk	India	Record daily precipitation	37.3 mm (1.5 in)	43 of 100 (Notable)
Postmyr I Drangedal	Norway	Record daily precipitation	37.1 mm (1.5 in)	42 of 100 (Notable)
Herefoss	Norway	Record daily precipitation	39.3 mm (1.5 in)	42 of 100 (Notable)
Tadpatri	India	Record daily precipitation	44.5 mm (1.8 in)	40 of 100 (Notable)
Port Washington	United States	Record daily precipitation	47.5 mm (1.9 in)	40 of 100 (Notable)
Simcoe	Canada	Record daily precipitation	30.0 mm (1.2 in)	38 of 100 (Notable)
Yadki	India	Record daily precipitation	74.7 mm (2.9 in)	38 of 100 (Notable)
Walnut	United States	Record daily precipitation	43.7 mm (1.7 in)	38 of 100 (Notable)
Mahasamund	India	Record daily precipitation	39.9 mm (1.6 in)	37 of 100 (Notable)
Concord	United States	Record daily snowfall	6.4 cm (2.5 in)	37 of 100 (Notable)
Belleville	Canada	Record daily precipitation	29.5 mm (1.2 in)	36 of 100 (Notable)
Kingston Queens U	Canada	Record daily precipitation	29.5 mm (1.2 in)	35 of 100 (Notable)
Durg(Drug)	India	Record daily precipitation	30.5 mm (1.2 in)	35 of 100 (Notable)
Manitowoc	United States	Record daily precipitation	35.8 mm (1.4 in)	35 of 100 (Notable)
Giddalore	India	Record daily precipitation	25.9 mm (1.0 in)	34 of 100 (Routine)
Sakoli	India	Record daily precipitation	61.2 mm (2.4 in)	34 of 100 (Routine)
Khairee	India	Record daily precipitation	52.3 mm (2.1 in)	34 of 100 (Routine)
Morrison	United States	Record daily precipitation	37.3 mm (1.5 in)	34 of 100 (Routine)
Khapari	India	Record daily precipitation	78.7 mm (3.1 in)	33 of 100 (Routine)
Sironcha	India	Record daily precipitation	35.1 mm (1.4 in)	33 of 100 (Routine)
Aseral	Norway	Record daily precipitation	47.4 mm (1.9 in)	33 of 100 (Routine)
Central Michigan UNIV	United States	Record daily precipitation	32.8 mm (1.3 in)	33 of 100 (Routine)
Pine River 3 NE	United States	Record daily precipitation	44.7 mm (1.8 in)	33 of 100 (Routine)
Waukesha Wwtp	United States	Record daily precipitation	47.0 mm (1.9 in)	33 of 100 (Routine)
Deogarh (Bamra)	India	Record daily precipitation	84.3 mm (3.3 in)	32 of 100 (Routine)
La Salle Peru	United States	Record daily precipitation	35.3 mm (1.4 in)	32 of 100 (Routine)
Tiskilwa 2 SE	United States	Record daily precipitation	37.8 mm (1.5 in)	32 of 100 (Routine)
Midland 2	United States	Record daily precipitation	48.0 mm (1.9 in)	32 of 100 (Routine)
Gjerstad I Aust-Agder	Norway	Record daily precipitation	33.5 mm (1.3 in)	31 of 100 (Routine)
Calvin	United States	Record daily precipitation	50.3 mm (2.0 in)	31 of 100 (Routine)
Brodhead Wwtp	United States	Record daily precipitation	34.3 mm (1.4 in)	31 of 100 (Routine)
Dwight	United States	Record daily precipitation	35.1 mm (1.4 in)	30 of 100 (Routine)
Green Bay	United States	Record daily precipitation	32.3 mm (1.3 in)	30 of 100 (Routine)
Haveri	India	Record daily precipitation	52.6 mm (2.1 in)	29 of 100 (Routine)
Gariabund	India	Record daily precipitation	33.3 mm (1.3 in)	29 of 100 (Routine)
Seoni	India	Record daily precipitation	26.4 mm (1.0 in)	29 of 100 (Routine)
Monmouth	United States	Record daily precipitation	39.4 mm (1.6 in)	29 of 100 (Routine)
Bay City	United States	Record daily precipitation	42.4 mm (1.7 in)	29 of 100 (Routine)
Watertown Wwtp	United States	Record daily precipitation	37.8 mm (1.5 in)	29 of 100 (Routine)
Grand River Lock	United States	Record daily precipitation	35.6 mm (1.4 in)	28 of 100 (Routine)
Grove Farm 1021	United States	Record daily precipitation	43.7 mm (1.7 in)	28 of 100 (Routine)
La Harpe	United States	Record daily precipitation	29.5 mm (1.2 in)	27 of 100 (Routine)
Grand Rapids Wb City	United States	Record daily precipitation	30.7 mm (1.2 in)	27 of 100 (Routine)
Harbor Beach 1 SSE	United States	Record daily precipitation	32.0 mm (1.3 in)	27 of 100 (Routine)
Faerder Fyr	Norway	Record high minimum temperature	10.5 C (50.9 F)	26 of 100 (Routine)
Oregon Wtr Wks	United States	Record daily precipitation	30.0 mm (1.2 in)	26 of 100 (Routine)
Spooner Ag Rsch STN	United States	Record daily precipitation	30.5 mm (1.2 in)	26 of 100 (Routine)
Bhadrachalam	India	Record daily precipitation	39.4 mm (1.6 in)	25 of 100 (Routine)
Crawfordsville Pwr Plt	United States	Record daily precipitation	40.6 mm (1.6 in)	25 of 100 (Routine)
Ann Arbor U of Mich	United States	Record daily precipitation	34.3 mm (1.4 in)	25 of 100 (Routine)
Chainpur	India	Record daily precipitation	25.4 mm (1.0 in)	24 of 100 (Routine)
Dover	United States	Record daily precipitation	32.5 mm (1.3 in)	24 of 100 (Routine)
Hart 3 WSW	United States	Record daily precipitation	29.2 mm (1.1 in)	24 of 100 (Routine)

Counts by Type and Timescale

416 records

Records set or tied on 21 April 1937 by type: Highest daily maximum 13, Lowest daily maximum 51, Highest daily minimum 31, Lowest daily minimum 6, Heaviest daily rainfall 298, Heaviest daily snowfall 13, Deepest snow cover 4.

Records on 21 April 1937 by type
Record type	Records
Highest daily maximum	13
Lowest daily maximum	51
Highest daily minimum	31
Lowest daily minimum	6
Heaviest daily rainfall	298
Heaviest daily snowfall	13
Deepest snow cover	4

Records on 21 April 1937 by timescale: all-time 0, monthly 7, daily 409.

How Much Records Were Beaten By

379 broken records

Margins by which the 379 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 280.0. Ties are not counted.

Top 20 by Significance

21 April 1937

Top 20 records on 21 April 1937 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 April 1937	Amraoti, IN	daily rain	33.8 mm (1.3 in)	33.8 mm (1.3 in)	36 years	53 of 100 (Notable)
21 April 1937	Paud, IN	daily rain	27.2 mm (1.1 in)	27.2 mm (1.1 in)	36 years	49 of 100 (Notable)
21 April 1937	Mykland, NO	daily rain	31.5 mm (1.2 in)	23.3 mm (0.9 in)	35 years	47 of 100 (Notable)
21 April 1937	Prathipadu, IN	daily rain	58.4 mm (2.3 in)	44.4 mm (1.7 in)	32 years	45 of 100 (Notable)
21 April 1937	Milwaukee Wb City, US	daily rain	47.0 mm (1.9 in)	30.5 mm (1.2 in)	10 years	45 of 100 (Notable)
21 April 1937	Huntsville, CA	daily rain	29.2 mm (1.1 in)	16.5 mm (0.6 in)	40 years	44 of 100 (Notable)
21 April 1937	Kandukur, IN	daily rain	31.8 mm (1.3 in)	31.8 mm (1.3 in)	36 years	44 of 100 (Notable)
21 April 1937	Owk, IN	daily rain	37.3 mm (1.5 in)	35.8 mm (1.4 in)	2 years	43 of 100 (Notable)
21 April 1937	Postmyr I Drangedal, NO	daily rain	37.1 mm (1.5 in)	24.3 mm (1.0 in)	16 years	42 of 100 (Notable)
21 April 1937	Herefoss, NO	daily rain	39.3 mm (1.5 in)	24.3 mm (1.0 in)	38 years	42 of 100 (Notable)
21 April 1937	Tadpatri, IN	daily rain	44.5 mm (1.8 in)	39.2 mm (1.5 in)	18 years	40 of 100 (Notable)
21 April 1937	Port Washington, US	daily rain	47.5 mm (1.9 in)	28.2 mm (1.1 in)	19 years	40 of 100 (Notable)
21 April 1937	Simcoe, CA	daily rain	30.0 mm (1.2 in)	21.9 mm (0.9 in)	8 years	38 of 100 (Notable)
21 April 1937	Yadki, IN	monthly rain	74.7 mm (2.9 in)	22.9 mm (0.9 in)	18 years	38 of 100 (Notable)
21 April 1937	Walnut, US	daily rain	43.7 mm (1.7 in)	29.5 mm (1.2 in)	6 years	38 of 100 (Notable)
21 April 1937	Mahasamund, IN	daily rain	39.9 mm (1.6 in)	30.8 mm (1.2 in)	4 years	37 of 100 (Notable)
21 April 1937	Concord, US	daily snowfall	6.4 cm (2.5 in)	6.4 cm (2.5 in)	68 years	37 of 100 (Notable)
21 April 1937	Belleville, CA	daily rain	29.5 mm (1.2 in)	19.1 mm (0.8 in)	10 years	36 of 100 (Notable)
21 April 1937	Kingston Queens U, CA	daily rain	29.5 mm (1.2 in)	14.8 mm (0.6 in)	19 years	35 of 100 (Notable)
21 April 1937	Durg(Drug), IN	daily rain	30.5 mm (1.2 in)	20.6 mm (0.8 in)	28 years	35 of 100 (Notable)

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

1793 to 1937

Records set or tied on this calendar date in each year from 1793 to 1937. 1937 had 416 records.

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

Records on 04-21 in each year
Year	Records
1793	1
1814	1
1820	1
1838	1
1849	2
1851	1
1852	3
1854	1
1858	3
1861	2
1865	3
1866	1
1868	1
1870	1
1875	4
1876	2
1877	1
1879	3
1880	1
1881	1
1882	1
1884	1
1885	2
1888	1
1890	1
1891	1
1892	1
1893	2
1894	4
1895	1
1897	1
1898	2
1899	2
1900	7
1901	17
1902	7
1903	3
1904	10
1905	18
1906	5
1907	17
1908	25
1909	20
1910	33
1911	9
1912	22
1913	14
1914	220
1915	24
1916	64
1917	48
1918	84
1919	31
1920	85
1921	59
1922	70
1923	223
1924	119
1925	295
1926	148
1927	284
1928	269
1929	193
1930	127
1931	358
1932	304
1933	201
1934	497
1935	266
1936	277
1937	416
1938	295
1939	110
1940	462
1941	306
1942	285
1943	481
1944	261
1945	367
1946	448
1947	459
1948	365
1949	448
1950	529
1951	884
1952	665
1953	640
1954	527
1955	607
1956	497
1957	824
1958	329
1959	505
1960	889
1961	647
1962	319
1963	778
1964	1,125
1965	658
1966	756
1967	903
1968	655
1969	388
1970	728
1971	546
1972	593
1973	1,163
1974	528
1975	360
1976	452
1977	854
1978	735
1979	449
1980	1,934
1981	944
1982	1,075
1983	1,366
1984	1,231
1985	1,245
1986	977
1987	1,290
1988	898
1989	1,557
1990	1,463
1991	1,291
1992	1,763
1993	847
1994	859
1995	1,476
1996	788
1997	964
1998	876
1999	752
2000	921
2001	967
2002	1,312
2003	607
2004	586
2005	693
2006	761
2007	480
2008	1,327
2009	983
2010	805
2011	1,053
2012	687
2013	1,015
2014	393
2015	621
2016	587
2017	797
2018	862
2019	731
2020	397
2021	1,608
2022	433
2023	887
2024	754
2025	506
2026	853

Download the Data

Data for records on 1937-04-21: 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 50	373
50 to 100	5
100 to 150	0
150 to 200	0
200 to 250	0
250 to 300	1