Weather Records on 21 May 1950

403 weather records were set or tied worldwide on 21 May 1950. Highest significance: Isis Downs, AU.

Key Facts for 21 May 1950

On 21 May 1950, 403 weather records were set or tied at long-record stations worldwide.
61 were record highs and 129 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 13 monthly and 390 daily.
Isis Downs set a daily record precipitation of 66.0 mm (2.6 in) on 21 May 1950.
Across 156 earlier years (1793 to 2026) the same calendar date averaged 461 records.

Record Map

403 stations

403 station records on 21 May 1950 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 May 1950: highest significance records shown on the map
Station	Country	Type	Value	Significance
Isis Downs	Australia	Record daily precipitation	66.0 mm (2.6 in)	54 of 100 (Notable)
Bimerah	Australia	Record daily precipitation	29.0 mm (1.1 in)	48 of 100 (Notable)
Bierbank Outstation	Australia	Record daily precipitation	76.2 mm (3.0 in)	48 of 100 (Notable)
Swan Island Lighthouse	Australia	Record daily precipitation	27.9 mm (1.1 in)	48 of 100 (Notable)
Uxbridge	Australia	Record daily precipitation	27.2 mm (1.1 in)	48 of 100 (Notable)
Ilfracombe Post Office	Australia	Record daily precipitation	48.3 mm (1.9 in)	47 of 100 (Notable)
Pine Hill Railway Station	Australia	Record daily precipitation	41.4 mm (1.6 in)	46 of 100 (Notable)
Narra Allen	Australia	Record daily precipitation	41.4 mm (1.6 in)	46 of 100 (Notable)
Alpha Post Office	Australia	Record daily precipitation	41.1 mm (1.6 in)	44 of 100 (Notable)
Isisford Post Office	Australia	Record daily precipitation	67.6 mm (2.7 in)	44 of 100 (Notable)
Murringo (Windermere)	Australia	Record daily precipitation	48.3 mm (1.9 in)	44 of 100 (Notable)
Phulparas	India	Record daily precipitation	109.2 mm (4.3 in)	43 of 100 (Notable)
Surbiton Station	Australia	Record daily precipitation	38.4 mm (1.5 in)	41 of 100 (Notable)
Woodbury	United States	Record daily precipitation	95.8 mm (3.8 in)	41 of 100 (Notable)
Darr River Downs	Australia	Record daily precipitation	55.9 mm (2.2 in)	39 of 100 (Notable)
Bierbank	Australia	Record daily precipitation	76.2 mm (3.0 in)	39 of 100 (Notable)
Boorowa Post Office	Australia	Record daily precipitation	33.5 mm (1.3 in)	39 of 100 (Notable)
Barcaldine Post Office	Australia	Record daily precipitation	43.2 mm (1.7 in)	37 of 100 (Notable)
Marran	Australia	Record daily precipitation	41.9 mm (1.6 in)	37 of 100 (Notable)
Rolleston	Australia	Record daily precipitation	50.8 mm (2.0 in)	36 of 100 (Notable)
Telemon Station	Australia	Record daily precipitation	33.5 mm (1.3 in)	36 of 100 (Notable)
Tooraweenah (Denham St)	Australia	Record daily precipitation	41.7 mm (1.6 in)	35 of 100 (Notable)
Evesham Station	Australia	Record daily precipitation	36.8 mm (1.4 in)	34 of 100 (Routine)
Wyandra Railway St	Australia	Record daily precipitation	31.5 mm (1.2 in)	34 of 100 (Routine)
Shepherds Creek	Australia	Record daily precipitation	41.4 mm (1.6 in)	34 of 100 (Routine)
Eddystone Point	Australia	Record daily precipitation	34.8 mm (1.4 in)	34 of 100 (Routine)
Bauhinia Downs Store	Australia	Record daily precipitation	52.3 mm (2.1 in)	33 of 100 (Routine)
Rainworth	Australia	Record daily precipitation	27.9 mm (1.1 in)	33 of 100 (Routine)
Longreach Post Office	Australia	Record daily precipitation	33.0 mm (1.3 in)	32 of 100 (Routine)
Neilrex (Caigan)	Australia	Record daily precipitation	43.2 mm (1.7 in)	32 of 100 (Routine)
Bumbaldry (Gold 'N' Grove)	Australia	Record daily precipitation	29.0 mm (1.1 in)	32 of 100 (Routine)
Fairfield	United States	Record daily precipitation	47.0 mm (1.9 in)	32 of 100 (Routine)
Mendooran Post Office	Australia	Record daily precipitation	32.0 mm (1.3 in)	31 of 100 (Routine)
Rye Park	Australia	Record daily precipitation	30.0 mm (1.2 in)	31 of 100 (Routine)
Yabba Station	Australia	Record daily precipitation	44.5 mm (1.8 in)	30 of 100 (Routine)
Camp Hill 2NW	United States	Record low maximum temperature	18.9 C (66.0 F)	30 of 100 (Routine)
King River	Australia	Record daily precipitation	31.8 mm (1.3 in)	29 of 100 (Routine)
Jericho Store	Australia	Record daily precipitation	49.3 mm (1.9 in)	29 of 100 (Routine)
Aramac Post Office	Australia	Record daily precipitation	25.4 mm (1.0 in)	29 of 100 (Routine)
Hohenpeissenberg	Germany	Record high maximum temperature	27.7 C (81.9 F)	29 of 100 (Routine)
Aonla	India	Record daily precipitation	43.2 mm (1.7 in)	29 of 100 (Routine)
Parker	United States	Record high minimum temperature	23.3 C (73.9 F)	29 of 100 (Routine)
Camden 3 W	United States	Record low maximum temperature	16.7 C (62.1 F)	29 of 100 (Routine)
Netherdale Post Office	Australia	Record daily precipitation	35.3 mm (1.4 in)	28 of 100 (Routine)
Greenethorpe (Iandra)	Australia	Record daily precipitation	36.6 mm (1.4 in)	28 of 100 (Routine)
Hohenpeissenberg	Germany	Record high minimum temperature	17.0 C (62.6 F)	28 of 100 (Routine)
Augsburg (Sankt Stephan)	Germany	Record high maximum temperature	30.4 C (86.7 F)	28 of 100 (Routine)
Saentis	Switzerland	Record high minimum temperature	7.4 C (45.3 F)	28 of 100 (Routine)
Napoopoo 28	United States	Record low maximum temperature	23.3 C (73.9 F)	28 of 100 (Routine)
Gulgong Post Office	Australia	Record daily precipitation	26.4 mm (1.0 in)	27 of 100 (Routine)
Hargraves (Weeroona)	Australia	Record daily precipitation	39.6 mm (1.6 in)	27 of 100 (Routine)
Warrangong	Australia	Record daily precipitation	40.6 mm (1.6 in)	27 of 100 (Routine)
Regensburg	Germany	Record high maximum temperature	30.7 C (87.3 F)	27 of 100 (Routine)
Freiburg	Germany	Record high minimum temperature	15.7 C (60.3 F)	27 of 100 (Routine)
Weissenburg	Germany	Record high maximum temperature	30.2 C (86.4 F)	27 of 100 (Routine)
Aleksandrovsk-Sahalinskij	Russia	Record low minimum temperature	-3.5 C (25.7 F)	27 of 100 (Routine)
Three Rivers Ed Ph 2	United States	Record high maximum temperature	41.1 C (106.0 F)	27 of 100 (Routine)
Louisville 1 E	United States	Record low maximum temperature	22.2 C (72.0 F)	27 of 100 (Routine)
Wilmington Wb City	United States	Record low minimum temperature	9.4 C (48.9 F)	27 of 100 (Routine)
Weslaco	United States	Record daily precipitation	61.2 mm (2.4 in)	27 of 100 (Routine)

Counts by Type and Timescale

403 records

Records set or tied on 21 May 1950 by type: Highest daily maximum 31, Lowest daily maximum 47, Highest daily minimum 30, Lowest daily minimum 82, Heaviest daily rainfall 213.

Records on 21 May 1950 by type
Record type	Records
Highest daily maximum	31
Lowest daily maximum	47
Highest daily minimum	30
Lowest daily minimum	82
Heaviest daily rainfall	213
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 21 May 1950 by timescale: all-time 0, monthly 13, daily 390.

How Much Records Were Beaten By

349 broken records

Margins by which the 349 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 67.3. Ties are not counted.

Top 20 by Significance

21 May 1950

Top 20 records on 21 May 1950 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 May 1950	Isis Downs, AU	daily rain	66.0 mm (2.6 in)	58.1 mm (2.3 in)	31 years	54 of 100 (Notable)
21 May 1950	Bimerah, AU	daily rain	29.0 mm (1.1 in)	29.0 mm (1.1 in)	64 years	48 of 100 (Notable)
21 May 1950	Bierbank Outstation, AU	daily rain	76.2 mm (3.0 in)	67.3 mm (2.6 in)	31 years	48 of 100 (Notable)
21 May 1950	Swan Island Lighthouse, AU	daily rain	27.9 mm (1.1 in)	17.7 mm (0.7 in)	32 years	48 of 100 (Notable)
21 May 1950	Uxbridge, AU	daily rain	27.2 mm (1.1 in)	18.6 mm (0.7 in)	32 years	48 of 100 (Notable)
21 May 1950	Ilfracombe Post Office, AU	daily rain	48.3 mm (1.9 in)	44.2 mm (1.7 in)	31 years	47 of 100 (Notable)
21 May 1950	Pine Hill Railway Station, AU	daily rain	41.4 mm (1.6 in)	37.1 mm (1.5 in)	36 years	46 of 100 (Notable)
21 May 1950	Narra Allen, AU	daily rain	41.4 mm (1.6 in)	19.8 mm (0.8 in)	53 years	46 of 100 (Notable)
21 May 1950	Alpha Post Office, AU	daily rain	41.1 mm (1.6 in)	32.2 mm (1.3 in)	47 years	44 of 100 (Notable)
21 May 1950	Isisford Post Office, AU	daily rain	67.6 mm (2.7 in)	43.7 mm (1.7 in)	36 years	44 of 100 (Notable)
21 May 1950	Murringo (Windermere), AU	daily rain	48.3 mm (1.9 in)	19.1 mm (0.8 in)	53 years	44 of 100 (Notable)
21 May 1950	Phulparas, IN	monthly rain	109.2 mm (4.3 in)	33.0 mm (1.3 in)	31 years	43 of 100 (Notable)
21 May 1950	Surbiton Station, AU	daily rain	38.4 mm (1.5 in)	27.0 mm (1.1 in)	49 years	41 of 100 (Notable)
21 May 1950	Woodbury, US	monthly rain	95.8 mm (3.8 in)	19.9 mm (0.8 in)	35 years	41 of 100 (Notable)
21 May 1950	Darr River Downs, AU	monthly rain	55.9 mm (2.2 in)	15.3 mm (0.6 in)	29 years	39 of 100 (Notable)
21 May 1950	Bierbank, AU	monthly rain	76.2 mm (3.0 in)	18.5 mm (0.7 in)	28 years	39 of 100 (Notable)
21 May 1950	Boorowa Post Office, AU	daily rain	33.5 mm (1.3 in)	20.8 mm (0.8 in)	28 years	39 of 100 (Notable)
21 May 1950	Barcaldine Post Office, AU	daily rain	43.2 mm (1.7 in)	26.7 mm (1.1 in)	44 years	37 of 100 (Notable)
21 May 1950	Marran, AU	daily rain	41.9 mm (1.6 in)	21.6 mm (0.9 in)	28 years	37 of 100 (Notable)
21 May 1950	Rolleston, AU	daily rain	50.8 mm (2.0 in)	28.7 mm (1.1 in)	28 years	36 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 1950

Records set or tied on this calendar date in each year from 1793 to 1950. 1950 had 403 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 1950-05-21: 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 2026-10-13 (13 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 10	273
10 to 20	51
20 to 30	15
30 to 40	5
40 to 50	3
50 to 60	1
60 to 70	1