Weather Records on 20 May 1951

288 weather records were set or tied worldwide on 20 May 1951. Highest significance: Ituacu, BR.

Key Facts for 20 May 1951

On 20 May 1951, 288 weather records were set or tied at long-record stations worldwide.
103 were record highs and 15 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 1 monthly and 287 daily.
Ituacu set a daily record precipitation of 55.0 mm (2.2 in) on 20 May 1951.
Across 162 earlier years (1802 to 2026) the same calendar date averaged 457 records.

Record Map

288 stations

288 station records on 20 May 1951 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 May 1951: highest significance records shown on the map
Station	Country	Type	Value	Significance
Ituacu	Brazil	Record daily precipitation	55.0 mm (2.2 in)	53 of 100 (Notable)
Shirbourne Park	Australia	Record daily precipitation	55.9 mm (2.2 in)	48 of 100 (Notable)
Nazira	India	Record daily precipitation	92.7 mm (3.6 in)	44 of 100 (Notable)
Buxa	India	Record daily precipitation	215.9 mm (8.5 in)	43 of 100 (Notable)
Bugulma	Russia	Record daily precipitation	26.1 mm (1.0 in)	41 of 100 (Notable)
Merrill	United States	Record daily precipitation	43.7 mm (1.7 in)	37 of 100 (Notable)
Hill City Muni AP	United States	Record daily precipitation	37.1 mm (1.5 in)	37 of 100 (Notable)
Baradine Post Office	Australia	Record daily precipitation	42.7 mm (1.7 in)	31 of 100 (Routine)
Srirangpatnam	India	Record daily precipitation	53.8 mm (2.1 in)	31 of 100 (Routine)
Anticosti SW Point	Canada	Record high maximum temperature	17.8 C (64.0 F)	30 of 100 (Routine)
Halflong Obsy	India	Record daily precipitation	106.4 mm (4.2 in)	30 of 100 (Routine)
Georgetown 2 E	United States	Record low maximum temperature	21.1 C (70.0 F)	30 of 100 (Routine)
Roberval Nord	Canada	Record high minimum temperature	21.1 C (70.0 F)	29 of 100 (Routine)
Gyzylarbat	Turkmenistan	Record high minimum temperature	25.8 C (78.4 F)	29 of 100 (Routine)
Imperial	United States	Record daily precipitation	49.5 mm (1.9 in)	29 of 100 (Routine)
Portsmouth-Sciotoville	United States	Record daily precipitation	30.7 mm (1.2 in)	29 of 100 (Routine)
North Bay	Canada	Record high maximum temperature	28.9 C (84.0 F)	28 of 100 (Routine)
Bathurst	Canada	Record high maximum temperature	32.2 C (90.0 F)	28 of 100 (Routine)
Singimari	India	Record daily precipitation	78.7 mm (3.1 in)	28 of 100 (Routine)
Menzies	Australia	Record daily precipitation	34.8 mm (1.4 in)	27 of 100 (Routine)
Achinsk	Russia	Record high minimum temperature	13.9 C (57.0 F)	27 of 100 (Routine)
Baradine (Caledonia)	Australia	Record daily precipitation	38.6 mm (1.5 in)	26 of 100 (Routine)
Lebanon 2W	United States	Record daily precipitation	68.6 mm (2.7 in)	26 of 100 (Routine)
Weldon	United States	Record low maximum temperature	18.3 C (64.9 F)	26 of 100 (Routine)
Dunoon	Australia	Record daily precipitation	43.2 mm (1.7 in)	25 of 100 (Routine)
Vestervig	Denmark	Record high maximum temperature	23.0 C (73.4 F)	25 of 100 (Routine)
Karunagapalli	India	Record daily precipitation	76.2 mm (3.0 in)	25 of 100 (Routine)
Lake Avalon	United States	Record daily precipitation	42.9 mm (1.7 in)	25 of 100 (Routine)
Sibsagar	India	Record daily precipitation	57.4 mm (2.3 in)	24 of 100 (Routine)
Julesburg	United States	Record daily precipitation	86.9 mm (3.4 in)	24 of 100 (Routine)
Okeene	United States	Record daily precipitation	38.1 mm (1.5 in)	24 of 100 (Routine)
Shelbyville Sewage Plt	United States	Record daily precipitation	39.9 mm (1.6 in)	23 of 100 (Routine)
Fredericton Unb	Canada	Record high maximum temperature	30.0 C (86.0 F)	22 of 100 (Routine)
Stuttgart	United States	Record high maximum temperature	33.9 C (93.0 F)	22 of 100 (Routine)
Midland 4 ENE	United States	Record low minimum temperature	4.4 C (39.9 F)	22 of 100 (Routine)
Lismore (Centre Street)	Australia	Record daily precipitation	41.9 mm (1.6 in)	21 of 100 (Routine)
Rio de Contas	Brazil	Record daily precipitation	37.7 mm (1.5 in)	21 of 100 (Routine)
Causapscal	Canada	Record high maximum temperature	31.1 C (88.0 F)	21 of 100 (Routine)
Pointe Au Pere	Canada	Record high minimum temperature	11.7 C (53.1 F)	21 of 100 (Routine)
Rawlinna	Australia	Record daily precipitation	17.8 mm (0.7 in)	20 of 100 (Routine)
Poowong (Post Office)	Australia	Record daily precipitation	17.3 mm (0.7 in)	20 of 100 (Routine)
Muralgarra	Australia	Record daily precipitation	20.6 mm (0.8 in)	20 of 100 (Routine)
Verhneimbatsk	Russia	Record daily precipitation	13.1 mm (0.5 in)	20 of 100 (Routine)
Haig	Australia	Record daily precipitation	15.0 mm (0.6 in)	20 of 100 (Routine)
Perm	Russia	Record daily precipitation	13.3 mm (0.5 in)	20 of 100 (Routine)
Goonumbla (Coradgery)	Australia	Record daily precipitation	22.1 mm (0.9 in)	20 of 100 (Routine)
Kirkalocka	Australia	Record daily precipitation	22.9 mm (0.9 in)	20 of 100 (Routine)
Deobhog	India	Record daily precipitation	24.1 mm (0.9 in)	20 of 100 (Routine)
Palmerville	Australia	Record daily precipitation	5.3 mm (0.21 in)	20 of 100 (Routine)
Graman (Willowie)	Australia	Record daily precipitation	13.5 mm (0.5 in)	20 of 100 (Routine)
Kleve	Germany	Record daily precipitation	11.8 mm (0.5 in)	20 of 100 (Routine)
Coonamble (Wingadee)	Australia	Record daily precipitation	14.2 mm (0.6 in)	20 of 100 (Routine)
Myton	United States	Record daily precipitation	6.4 mm (0.25 in)	20 of 100 (Routine)
Forrest Railway	Australia	Record daily precipitation	12.2 mm (0.5 in)	20 of 100 (Routine)
Tara Shire Council	Australia	Record daily precipitation	24.6 mm (1.0 in)	20 of 100 (Routine)
Comongin North	Australia	Record daily precipitation	4.6 mm (0.18 in)	20 of 100 (Routine)
Stewart	Canada	Record daily precipitation	13.0 mm (0.5 in)	20 of 100 (Routine)
Salekhard	Russia	Record daily precipitation	18.5 mm (0.7 in)	20 of 100 (Routine)
Ust Tzilma	Russia	Record daily precipitation	6.4 mm (0.25 in)	20 of 100 (Routine)
Roswell Muni AP	United States	Record daily precipitation	19.6 mm (0.8 in)	20 of 100 (Routine)

Counts by Type and Timescale

288 records

Records set or tied on 20 May 1951 by type: Highest daily maximum 52, Lowest daily maximum 9, Highest daily minimum 51, Lowest daily minimum 6, Heaviest daily rainfall 170.

Records on 20 May 1951 by type
Record type	Records
Highest daily maximum	52
Lowest daily maximum	9
Highest daily minimum	51
Lowest daily minimum	6
Heaviest daily rainfall	170
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 20 May 1951 by timescale: all-time 0, monthly 1, daily 287.

How Much Records Were Beaten By

244 broken records

Margins by which the 244 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 95.8. Ties are not counted.

Top 20 by Significance

20 May 1951

Top 20 records on 20 May 1951 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 May 1951	Ituacu, BR	daily rain	55.0 mm (2.2 in)	52.7 mm (2.1 in)	30 years	53 of 100 (Notable)
20 May 1951	Shirbourne Park, AU	daily rain	55.9 mm (2.2 in)	49.3 mm (1.9 in)	18 years	48 of 100 (Notable)
20 May 1951	Nazira, IN	daily rain	92.7 mm (3.6 in)	55.4 mm (2.2 in)	36 years	44 of 100 (Notable)
20 May 1951	Buxa, IN	daily rain	215.9 mm (8.5 in)	95.8 mm (3.8 in)	26 years	43 of 100 (Notable)
20 May 1951	Bugulma, RU	daily rain	26.1 mm (1.0 in)	16.8 mm (0.7 in)	4 years	41 of 100 (Notable)
20 May 1951	Merrill, US	daily rain	43.7 mm (1.7 in)	20.8 mm (0.8 in)	38 years	37 of 100 (Notable)
20 May 1951	Hill City Muni AP, US	daily rain	37.1 mm (1.5 in)	21.6 mm (0.9 in)	36 years	37 of 100 (Notable)
20 May 1951	Baradine Post Office, AU	daily rain	42.7 mm (1.7 in)	14.5 mm (0.6 in)	48 years	31 of 100 (Routine)
20 May 1951	Srirangpatnam, IN	daily rain	53.8 mm (2.1 in)	22.6 mm (0.9 in)	40 years	31 of 100 (Routine)
20 May 1951	Anticosti SW Point, CA	daily high max	17.8 C (64.0 F)	1.7 C (3.1 F)	61 years	30 of 100 (Routine)
20 May 1951	Halflong Obsy, IN	daily rain	106.4 mm (4.2 in)	44.7 mm (1.8 in)	36 years	30 of 100 (Routine)
20 May 1951	Georgetown 2 E, US	daily low max	21.1 C (70.0 F)	2.8 C (5.0 F)	56 years	30 of 100 (Routine)
20 May 1951	Roberval Nord, CA	daily high min	21.1 C (70.0 F)	2.8 C (5.0 F)	61 years	29 of 100 (Routine)
20 May 1951	Gyzylarbat, TM	daily high min	25.8 C (78.4 F)	2.9 C (5.2 F)	50 years	29 of 100 (Routine)
20 May 1951	Imperial, US	daily rain	49.5 mm (1.9 in)	26.6 mm (1.0 in)	9 years	29 of 100 (Routine)
20 May 1951	Portsmouth-Sciotoville, US	daily rain	30.7 mm (1.2 in)	7.8 mm (0.31 in)	56 years	29 of 100 (Routine)
20 May 1951	North Bay, CA	daily high max	28.9 C (84.0 F)	2.2 C (4.0 F)	61 years	28 of 100 (Routine)
20 May 1951	Bathurst, CA	daily high max	32.2 C (90.0 F)	1.1 C (2.0 F)	64 years	28 of 100 (Routine)
20 May 1951	Singimari, IN	daily rain	78.7 mm (3.1 in)	27.6 mm (1.1 in)	25 years	28 of 100 (Routine)
20 May 1951	Menzies, AU	daily rain	34.8 mm (1.4 in)	9.1 mm (0.36 in)	42 years	27 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

1802 to 1951

Records set or tied on this calendar date in each year from 1802 to 1951. 1951 had 288 records.

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

Records on 05-20 in each year
Year	Records
1802	1
1803	1
1804	1
1815	1
1825	1
1837	1
1844	1
1845	3
1847	1
1854	1
1858	3
1861	1
1862	1
1865	1
1867	1
1868	2
1870	3
1871	2
1876	2
1877	3
1879	1
1880	2
1884	2
1885	1
1887	2
1889	3
1890	3
1891	5
1892	3
1893	1
1894	6
1895	3
1896	3
1897	3
1898	4
1899	4
1900	1
1901	5
1902	11
1903	19
1904	4
1905	4
1906	22
1907	35
1908	23
1909	10
1910	20
1911	82
1912	20
1913	10
1914	16
1915	42
1916	29
1917	46
1918	92
1919	56
1920	44
1921	234
1922	40
1923	125
1924	189
1925	251
1926	128
1927	118
1928	138
1929	323
1930	129
1931	451
1932	689
1933	449
1934	582
1935	259
1936	207
1937	270
1938	331
1939	266
1940	337
1941	378
1942	337
1943	802
1944	315
1945	498
1946	339
1947	358
1948	514
1949	586
1950	327
1951	288
1952	615
1953	518
1954	822
1955	421
1956	565
1957	728
1958	378
1959	785
1960	612
1961	333
1962	773
1963	732
1964	517
1965	200
1966	416
1967	587
1968	743
1969	885
1970	310
1971	653
1972	612
1973	419
1974	893
1975	1,332
1976	837
1977	553
1978	534
1979	683
1980	751
1981	1,540
1982	554
1983	1,307
1984	867
1985	426
1986	790
1987	1,036
1988	805
1989	764
1990	722
1991	925
1992	1,200
1993	1,208
1994	778
1995	734
1996	1,749
1997	1,106
1998	1,124
1999	673
2000	991
2001	847
2002	2,299
2003	1,201
2004	746
2005	929
2006	1,006
2007	565
2008	999
2009	1,529
2010	1,011
2011	1,117
2012	604
2013	919
2014	629
2015	1,001
2016	692
2017	1,214
2018	460
2019	1,483
2020	784
2021	904
2022	1,643
2023	1,106
2024	478
2025	969
2026	696

Download the Data

Data for records on 1951-05-20: 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 20	229
20 to 40	10
40 to 60	4
60 to 80	0
80 to 100	1