Weather Records on 21 May 1952

385 weather records were set or tied worldwide on 21 May 1952. Highest significance: Bozeman Montana State UNIV, US.

Key Facts for 21 May 1952

On 21 May 1952, 385 weather records were set or tied at long-record stations worldwide.
44 were record highs and 133 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 7 monthly and 378 daily.
Bozeman Montana State UNIV set a daily record precipitation of 52.3 mm (2.1 in) on 21 May 1952.
Across 156 earlier years (1793 to 2026) the same calendar date averaged 461 records.

Record Map

385 stations

385 station records on 21 May 1952 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 May 1952: highest significance records shown on the map
Station	Country	Type	Value	Significance
Bozeman Montana State UNIV	United States	Record daily precipitation	52.3 mm (2.1 in)	63 of 100 (Major)
White Sulphur Springs	United States	Record daily precipitation	32.0 mm (1.3 in)	57 of 100 (Notable)
Billings Wtp	United States	Record daily precipitation	52.8 mm (2.1 in)	55 of 100 (Notable)
Booleroo (Wimont)	Australia	Record daily precipitation	41.9 mm (1.6 in)	54 of 100 (Notable)
Baratria	Australia	Record daily precipitation	36.8 mm (1.4 in)	51 of 100 (Notable)
Ponneri	India	Record daily precipitation	143.3 mm (5.6 in)	49 of 100 (Notable)
Broome Post Office	Australia	Record daily precipitation	87.6 mm (3.4 in)	48 of 100 (Notable)
Madras/Minambakkam	India	Record daily precipitation	140.7 mm (5.5 in)	48 of 100 (Notable)
Cody	United States	Record daily precipitation	27.4 mm (1.1 in)	47 of 100 (Notable)
Sable Island	Canada	Record daily precipitation	36.3 mm (1.4 in)	44 of 100 (Notable)
Satyavedu	India	Record daily precipitation	82.6 mm (3.3 in)	44 of 100 (Notable)
Norris Madison Pwr House	United States	Record daily precipitation	51.8 mm (2.0 in)	44 of 100 (Notable)
Dumont 2 ENE	United States	Record daily precipitation	55.9 mm (2.2 in)	44 of 100 (Notable)
Cheyyar	India	Record daily precipitation	76.7 mm (3.0 in)	43 of 100 (Notable)
Tiruvallur	India	Record daily precipitation	107.2 mm (4.2 in)	40 of 100 (Notable)
Ennis	United States	Record daily precipitation	26.7 mm (1.1 in)	38 of 100 (Notable)
Sriperumbudur	India	Record daily precipitation	72.4 mm (2.9 in)	37 of 100 (Notable)
Kurseong	India	Record daily precipitation	104.1 mm (4.1 in)	36 of 100 (Notable)
Orono	United States	Record daily precipitation	37.8 mm (1.5 in)	35 of 100 (Notable)
Chingleput	India	Record daily precipitation	102.4 mm (4.0 in)	34 of 100 (Routine)
Bidyadanga	Australia	Record daily precipitation	61.5 mm (2.4 in)	33 of 100 (Routine)
Athipettu	India	Record daily precipitation	172.0 mm (6.8 in)	33 of 100 (Routine)
Ithaca Cornell UNIV	United States	Record daily precipitation	27.9 mm (1.1 in)	33 of 100 (Routine)
Hvar	Croatia	Record low minimum temperature	8.7 C (47.7 F)	32 of 100 (Routine)
Venukonda	India	Record daily precipitation	53.3 mm (2.1 in)	32 of 100 (Routine)
Kremsmuenster	Austria	Record low maximum temperature	10.1 C (50.2 F)	30 of 100 (Routine)
Goalpara	India	Record daily precipitation	66.5 mm (2.6 in)	30 of 100 (Routine)
Junagadh	India	Record daily precipitation	29.5 mm (1.2 in)	30 of 100 (Routine)
Lead	United States	Record daily precipitation	40.9 mm (1.6 in)	30 of 100 (Routine)
Mahabalipuram Obsy	India	Record daily precipitation	104.9 mm (4.1 in)	29 of 100 (Routine)
Saidapet	India	Record daily precipitation	121.9 mm (4.8 in)	29 of 100 (Routine)
Rapelje	United States	Record daily precipitation	38.1 mm (1.5 in)	29 of 100 (Routine)
Newcastle	United States	Record daily precipitation	25.9 mm (1.0 in)	29 of 100 (Routine)
Gayndah Post Office	Australia	Record low maximum temperature	14.7 C (58.5 F)	28 of 100 (Routine)
Piler(Pileru)	India	Record daily precipitation	55.9 mm (2.2 in)	28 of 100 (Routine)
Arkonam	India	Record daily precipitation	59.2 mm (2.3 in)	28 of 100 (Routine)
Virginia City	United States	Record low maximum temperature	5.0 C (41.0 F)	28 of 100 (Routine)
Debrecen Airport	Hungary	Record low minimum temperature	-2.5 C (27.5 F)	27 of 100 (Routine)
Mercanam	India	Record daily precipitation	44.7 mm (1.8 in)	27 of 100 (Routine)
Madurantakam	India	Record daily precipitation	69.3 mm (2.7 in)	27 of 100 (Routine)
Morekulam	India	Record daily precipitation	47.0 mm (1.9 in)	27 of 100 (Routine)
Lardner (Brandie Braes)	Australia	Record daily precipitation	26.7 mm (1.1 in)	26 of 100 (Routine)
Port Arthur	Australia	Record daily precipitation	36.8 mm (1.4 in)	26 of 100 (Routine)
Graz	Austria	Record low minimum temperature	0.0 C (32.0 F)	26 of 100 (Routine)
Zugspitze	Germany	Record low minimum temperature	-14.8 C (5.4 F)	26 of 100 (Routine)
Chittoor	India	Record daily precipitation	50.5 mm (2.0 in)	26 of 100 (Routine)
Ballantine	United States	Record daily precipitation	26.2 mm (1.0 in)	26 of 100 (Routine)
Morrisburg	Canada	Record daily precipitation	32.8 mm (1.3 in)	25 of 100 (Routine)
Sullurpet	India	Record daily precipitation	77.5 mm (3.1 in)	25 of 100 (Routine)
Covelong	India	Record daily precipitation	129.5 mm (5.1 in)	25 of 100 (Routine)
Mathabhanga	India	Record daily precipitation	84.6 mm (3.3 in)	25 of 100 (Routine)
Calarasi	Romania	Record low maximum temperature	9.5 C (49.1 F)	25 of 100 (Routine)
Colchester 2 W	United States	Record low maximum temperature	11.1 C (52.0 F)	25 of 100 (Routine)
Livingston	United States	Record daily precipitation	29.2 mm (1.1 in)	25 of 100 (Routine)
Buskala Rch	United States	Record daily precipitation	36.1 mm (1.4 in)	25 of 100 (Routine)
Wheeling Warwood Dam	United States	Record daily precipitation	26.4 mm (1.0 in)	25 of 100 (Routine)
Buffalo Bill Dam	United States	Record daily precipitation	34.3 mm (1.4 in)	25 of 100 (Routine)
Korumburra	Australia	Record daily precipitation	30.5 mm (1.2 in)	24 of 100 (Routine)
Hobart (Ellerslie Road)	Australia	Record low maximum temperature	8.5 C (47.3 F)	24 of 100 (Routine)
Balipara(Addibar) Sr	India	Record daily precipitation	56.4 mm (2.2 in)	24 of 100 (Routine)

Counts by Type and Timescale

385 records

Records set or tied on 21 May 1952 by type: Highest daily maximum 15, Lowest daily maximum 69, Highest daily minimum 29, Lowest daily minimum 64, Heaviest daily rainfall 206, Heaviest daily snowfall 2.

Records on 21 May 1952 by type
Record type	Records
Highest daily maximum	15
Lowest daily maximum	69
Highest daily minimum	29
Lowest daily minimum	64
Heaviest daily rainfall	206
Heaviest daily snowfall	2
Deepest snow cover	0

Records on 21 May 1952 by timescale: all-time 0, monthly 7, daily 378.

How Much Records Were Beaten By

332 broken records

Margins by which the 332 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 105.5. Ties are not counted.

Top 20 by Significance

21 May 1952

Top 20 records on 21 May 1952 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 May 1952	Bozeman Montana State UNIV, US	daily rain	52.3 mm (2.1 in)	30.5 mm (1.2 in)	58 years	63 of 100 (Major)
21 May 1952	White Sulphur Springs, US	daily rain	32.0 mm (1.3 in)	22.9 mm (0.9 in)	40 years	57 of 100 (Notable)
21 May 1952	Billings Wtp, US	daily rain	52.8 mm (2.1 in)	37.6 mm (1.5 in)	36 years	55 of 100 (Notable)
21 May 1952	Booleroo (Wimont), AU	daily rain	41.9 mm (1.6 in)	29.2 mm (1.1 in)	26 years	54 of 100 (Notable)
21 May 1952	Baratria, AU	daily rain	36.8 mm (1.4 in)	36.8 mm (1.4 in)	39 years	51 of 100 (Notable)
21 May 1952	Ponneri, IN	daily rain	143.3 mm (5.6 in)	105.5 mm (4.2 in)	49 years	49 of 100 (Notable)
21 May 1952	Broome Post Office, AU	daily rain	87.6 mm (3.4 in)	69.8 mm (2.7 in)	11 years	48 of 100 (Notable)
21 May 1952	Madras/Minambakkam, IN	daily rain	140.7 mm (5.5 in)	98.8 mm (3.9 in)	49 years	48 of 100 (Notable)
21 May 1952	Cody, US	daily rain	27.4 mm (1.1 in)	19.8 mm (0.8 in)	25 years	47 of 100 (Notable)
21 May 1952	Sable Island, CA	daily rain	36.3 mm (1.4 in)	22.6 mm (0.9 in)	52 years	44 of 100 (Notable)
21 May 1952	Satyavedu, IN	daily rain	82.6 mm (3.3 in)	58.2 mm (2.3 in)	49 years	44 of 100 (Notable)
21 May 1952	Norris Madison Pwr House, US	daily rain	51.8 mm (2.0 in)	32.5 mm (1.3 in)	25 years	44 of 100 (Notable)
21 May 1952	Dumont 2 ENE, US	daily rain	55.9 mm (2.2 in)	41.9 mm (1.6 in)	3 years	44 of 100 (Notable)
21 May 1952	Cheyyar, IN	daily rain	76.7 mm (3.0 in)	57.6 mm (2.3 in)	49 years	43 of 100 (Notable)
21 May 1952	Tiruvallur, IN	daily rain	107.2 mm (4.2 in)	54.4 mm (2.1 in)	34 years	40 of 100 (Notable)
21 May 1952	Ennis, US	daily rain	26.7 mm (1.1 in)	14.0 mm (0.6 in)	34 years	38 of 100 (Notable)
21 May 1952	Sriperumbudur, IN	daily rain	72.4 mm (2.9 in)	35.8 mm (1.4 in)	49 years	37 of 100 (Notable)
21 May 1952	Kurseong, IN	daily rain	104.1 mm (4.1 in)	51.0 mm (2.0 in)	14 years	36 of 100 (Notable)
21 May 1952	Orono, US	daily rain	37.8 mm (1.5 in)	17.5 mm (0.7 in)	40 years	35 of 100 (Notable)
21 May 1952	Chingleput, IN	daily rain	102.4 mm (4.0 in)	79.0 mm (3.1 in)	3 years	34 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

1793 to 1952

Records set or tied on this calendar date in each year from 1793 to 1952. 1952 had 385 records.

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

Records on 05-21 in each year
Year	Records
1793	1
1795	1
1811	1
1837	2
1842	1
1847	2
1854	1
1857	1
1858	1
1865	1
1866	1
1870	2
1875	1
1876	1
1880	2
1882	1
1885	1
1886	2
1887	3
1889	5
1890	3
1891	6
1892	1
1893	1
1894	4
1895	4
1896	5
1897	2
1898	1
1899	5
1900	1
1901	3
1902	4
1903	26
1904	8
1905	7
1906	12
1907	36
1908	13
1909	13
1910	14
1911	87
1912	24
1913	13
1914	26
1915	24
1916	13
1917	76
1918	51
1919	170
1920	39
1921	158
1922	39
1923	125
1924	148
1925	250
1926	221
1927	207
1928	173
1929	247
1930	133
1931	488
1932	343
1933	290
1934	590
1935	190
1936	328
1937	227
1938	348
1939	355
1940	456
1941	525
1942	482
1943	463
1944	310
1945	515
1946	324
1947	485
1948	312
1949	593
1950	403
1951	271
1952	385
1953	501
1954	961
1955	507
1956	409
1957	709
1958	511
1959	684
1960	615
1961	306
1962	553
1963	598
1964	788
1965	238
1966	296
1967	1,022
1968	549
1969	832
1970	449
1971	536
1972	557
1973	493
1974	847
1975	1,160
1976	393
1977	756
1978	575
1979	787
1980	857
1981	1,550
1982	599
1983	1,106
1984	950
1985	610
1986	908
1987	1,242
1988	819
1989	671
1990	947
1991	1,065
1992	1,143
1993	1,197
1994	656
1995	749
1996	1,461
1997	953
1998	1,200
1999	544
2000	897
2001	1,187
2002	2,048
2003	807
2004	898
2005	1,020
2006	810
2007	894
2008	740
2009	1,315
2010	962
2011	959
2012	848
2013	884
2014	522
2015	956
2016	567
2017	780
2018	525
2019	1,668
2020	707
2021	1,131
2022	1,512
2023	794
2024	751
2025	776
2026	356

Download the Data

Data for records on 1952-05-21: 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Margin	Records
0 to 20	296
20 to 40	22
40 to 60	7
60 to 80	3
80 to 100	2
100 to 120	2