Weather Records on 20 May 1946

339 weather records were set or tied worldwide on 20 May 1946. Highest significance: Delegate Post Office, AU.

Key Facts for 20 May 1946

On 20 May 1946, 339 weather records were set or tied at long-record stations worldwide.
32 were record highs and 81 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 12 monthly and 327 daily.
Delegate Post Office set a daily record precipitation of 55.9 mm (2.2 in) on 20 May 1946.
Across 162 earlier years (1802 to 2026) the same calendar date averaged 456 records.

Record Map

339 stations

339 station records on 20 May 1946 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 May 1946: highest significance records shown on the map
Station	Country	Type	Value	Significance
Delegate Post Office	Australia	Record daily precipitation	55.9 mm (2.2 in)	59 of 100 (Notable)
Bendoc Park	Australia	Record daily precipitation	54.1 mm (2.1 in)	54 of 100 (Notable)
Adaminaby Alpine Tourist Park	Australia	Record daily precipitation	37.6 mm (1.5 in)	52 of 100 (Notable)
Whitefish Pt	United States	Record daily precipitation	50.8 mm (2.0 in)	52 of 100 (Notable)
Burrwood Wb	United States	Record daily precipitation	235.5 mm (9.3 in)	49 of 100 (Notable)
Anahuac	United States	Record daily precipitation	119.4 mm (4.7 in)	47 of 100 (Notable)
Bombala (Therry Street)	Australia	Record daily precipitation	55.6 mm (2.2 in)	46 of 100 (Notable)
Fernandina Beach	United States	Record daily precipitation	65.5 mm (2.6 in)	46 of 100 (Notable)
Hillside	South Africa	Record daily precipitation	31.8 mm (1.3 in)	45 of 100 (Notable)
Kareepoort	South Africa	Record daily precipitation	31.5 mm (1.2 in)	42 of 100 (Notable)
Sea Lake (Marston Downs)	Australia	Record daily precipitation	29.2 mm (1.1 in)	41 of 100 (Notable)
Butchers Ridge Post Office	Australia	Record daily precipitation	36.6 mm (1.4 in)	40 of 100 (Notable)
Prattville	United States	Record daily precipitation	90.9 mm (3.6 in)	40 of 100 (Notable)
Mount Wallace	Australia	Record daily precipitation	27.2 mm (1.1 in)	37 of 100 (Notable)
Shevgaon	India	Record daily precipitation	33.8 mm (1.3 in)	37 of 100 (Notable)
Columbus Dardc	United States	Record daily precipitation	63.5 mm (2.5 in)	36 of 100 (Notable)
Ft Deposit	United States	Record daily precipitation	59.2 mm (2.3 in)	35 of 100 (Notable)
Syfergat (Sar)	South Africa	Record daily precipitation	38.1 mm (1.5 in)	33 of 100 (Routine)
Oranje	South Africa	Record daily precipitation	38.1 mm (1.5 in)	33 of 100 (Routine)
Clanton	United States	Record daily precipitation	95.3 mm (3.8 in)	33 of 100 (Routine)
Greenville	United States	Record daily precipitation	73.2 mm (2.9 in)	33 of 100 (Routine)
Eufaula	United States	Record daily precipitation	55.6 mm (2.2 in)	32 of 100 (Routine)
Wayne	United States	Record daily precipitation	28.2 mm (1.1 in)	31 of 100 (Routine)
Whitsett 3 SW	United States	Record daily precipitation	67.3 mm (2.6 in)	30 of 100 (Routine)
Crown St. Reservoir	Australia	Record daily precipitation	49.3 mm (1.9 in)	29 of 100 (Routine)
Woori Yallock	Australia	Record daily precipitation	27.9 mm (1.1 in)	29 of 100 (Routine)
Goderich Township	Canada	Record daily precipitation	31.5 mm (1.2 in)	29 of 100 (Routine)
Anderson	United States	Record daily precipitation	79.0 mm (3.1 in)	29 of 100 (Routine)
Chatswood Water Supply	Australia	Record daily precipitation	51.6 mm (2.0 in)	28 of 100 (Routine)
Goderich	Canada	Record daily precipitation	35.8 mm (1.4 in)	28 of 100 (Routine)
Barrage Temiscamingue	Canada	Record daily precipitation	43.7 mm (1.7 in)	28 of 100 (Routine)
Union Springs 9 S	United States	Record daily precipitation	81.3 mm (3.2 in)	28 of 100 (Routine)
Montezuma 2 NW	United States	Record daily precipitation	49.3 mm (1.9 in)	28 of 100 (Routine)
George W 2 SSW	United States	Record daily precipitation	57.2 mm (2.3 in)	28 of 100 (Routine)
Auburn	United States	Record daily precipitation	85.9 mm (3.4 in)	27 of 100 (Routine)
Storlien	Sweden	Record low minimum temperature	-5.0 C (23.0 F)	26 of 100 (Routine)
Greensboro	United States	Record daily precipitation	59.2 mm (2.3 in)	26 of 100 (Routine)
Tuscaloosa Oliver Dam	United States	Record daily precipitation	47.0 mm (1.9 in)	26 of 100 (Routine)
Wetumpka	United States	Record daily precipitation	56.9 mm (2.2 in)	26 of 100 (Routine)
Cairns Post Office	Australia	Record low minimum temperature	11.2 C (52.2 F)	25 of 100 (Routine)
Jardim	Brazil	Record daily precipitation	30.0 mm (1.2 in)	25 of 100 (Routine)
McGregor	United States	Record daily precipitation	42.7 mm (1.7 in)	25 of 100 (Routine)
Lady Grey (Pol)	South Africa	Record daily precipitation	29.5 mm (1.2 in)	24 of 100 (Routine)
Tuskegee	United States	Record daily precipitation	104.1 mm (4.1 in)	24 of 100 (Routine)
Steveston	Canada	Record high minimum temperature	12.8 C (55.0 F)	23 of 100 (Routine)
Milstead	United States	Record daily precipitation	72.9 mm (2.9 in)	23 of 100 (Routine)
Troy	United States	Record daily precipitation	94.2 mm (3.7 in)	23 of 100 (Routine)
Steamboat Springs	United States	Record low minimum temperature	-7.2 C (19.0 F)	23 of 100 (Routine)
Lumber City	United States	Record daily precipitation	26.7 mm (1.1 in)	23 of 100 (Routine)
Av-A-Rest	Australia	Record daily precipitation	25.7 mm (1.0 in)	22 of 100 (Routine)
Odesa	Ukraine	Record high maximum temperature	29.9 C (85.8 F)	22 of 100 (Routine)
Marianna Sch For Boys	United States	Record daily precipitation	81.3 mm (3.2 in)	22 of 100 (Routine)
Mt Pleasant 2 W	United States	Record daily precipitation	69.9 mm (2.8 in)	22 of 100 (Routine)
Raton	United States	Record low maximum temperature	7.8 C (46.0 F)	22 of 100 (Routine)
Varzea Alegre	Brazil	Record daily precipitation	32.5 mm (1.3 in)	21 of 100 (Routine)
Santa Luzia	Brazil	Record daily precipitation	25.2 mm (1.0 in)	21 of 100 (Routine)
Bedetti(Behali)	India	Record daily precipitation	62.2 mm (2.4 in)	21 of 100 (Routine)
Hempstead	United States	Record daily precipitation	121.9 mm (4.8 in)	21 of 100 (Routine)
Ellesmere	South Africa	Record daily precipitation	23.9 mm (0.9 in)	20 of 100 (Routine)
Escanaba	United States	Record daily precipitation	17.5 mm (0.7 in)	20 of 100 (Routine)

Counts by Type and Timescale

339 records

Records set or tied on 20 May 1946 by type: Highest daily maximum 9, Lowest daily maximum 42, Highest daily minimum 23, Lowest daily minimum 39, Heaviest daily rainfall 224, Heaviest daily snowfall 2.

Records on 20 May 1946 by type
Record type	Records
Highest daily maximum	9
Lowest daily maximum	42
Highest daily minimum	23
Lowest daily minimum	39
Heaviest daily rainfall	224
Heaviest daily snowfall	2
Deepest snow cover	0

Records on 20 May 1946 by timescale: all-time 0, monthly 12, daily 327.

How Much Records Were Beaten By

295 broken records

Margins by which the 295 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 99.1. Ties are not counted.

Top 20 by Significance

20 May 1946

Top 20 records on 20 May 1946 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 May 1946	Delegate Post Office, AU	daily rain	55.9 mm (2.2 in)	49.3 mm (1.9 in)	48 years	59 of 100 (Notable)
20 May 1946	Bendoc Park, AU	daily rain	54.1 mm (2.1 in)	49.5 mm (1.9 in)	28 years	54 of 100 (Notable)
20 May 1946	Adaminaby Alpine Tourist Park, AU	daily rain	37.6 mm (1.5 in)	29.7 mm (1.2 in)	48 years	52 of 100 (Notable)
20 May 1946	Whitefish Pt, US	daily rain	50.8 mm (2.0 in)	28.4 mm (1.1 in)	44 years	52 of 100 (Notable)
20 May 1946	Burrwood Wb, US	monthly rain	235.5 mm (9.3 in)	82.6 mm (3.3 in)	9 years	49 of 100 (Notable)
20 May 1946	Anahuac, US	daily rain	119.4 mm (4.7 in)	99.1 mm (3.9 in)	15 years	47 of 100 (Notable)
20 May 1946	Bombala (Therry Street), AU	daily rain	55.6 mm (2.2 in)	43.7 mm (1.7 in)	3 years	46 of 100 (Notable)
20 May 1946	Fernandina Beach, US	daily rain	65.5 mm (2.6 in)	58.4 mm (2.3 in)	13 years	46 of 100 (Notable)
20 May 1946	Hillside, ZA	daily rain	31.8 mm (1.3 in)	27.5 mm (1.1 in)	31 years	45 of 100 (Notable)
20 May 1946	Kareepoort, ZA	daily rain	31.5 mm (1.2 in)	24.6 mm (1.0 in)	0 years	42 of 100 (Notable)
20 May 1946	Sea Lake (Marston Downs), AU	daily rain	29.2 mm (1.1 in)	21.1 mm (0.8 in)	23 years	41 of 100 (Notable)
20 May 1946	Butchers Ridge Post Office, AU	daily rain	36.6 mm (1.4 in)	30.5 mm (1.2 in)	44 years	40 of 100 (Notable)
20 May 1946	Prattville, US	monthly rain	90.9 mm (3.6 in)	19.8 mm (0.8 in)	34 years	40 of 100 (Notable)
20 May 1946	Mount Wallace, AU	daily rain	27.2 mm (1.1 in)	15.5 mm (0.6 in)	28 years	37 of 100 (Notable)
20 May 1946	Shevgaon, IN	daily rain	33.8 mm (1.3 in)	30.5 mm (1.2 in)	23 years	37 of 100 (Notable)
20 May 1946	Columbus Dardc, US	daily rain	63.5 mm (2.5 in)	30.7 mm (1.2 in)	36 years	36 of 100 (Notable)
20 May 1946	Ft Deposit, US	daily rain	59.2 mm (2.3 in)	34.6 mm (1.4 in)	20 years	35 of 100 (Notable)
20 May 1946	Syfergat (Sar), ZA	daily rain	38.1 mm (1.5 in)	17.5 mm (0.7 in)	31 years	33 of 100 (Routine)
20 May 1946	Oranje, ZA	daily rain	38.1 mm (1.5 in)	17.5 mm (0.7 in)	31 years	33 of 100 (Routine)
20 May 1946	Clanton, US	monthly rain	95.3 mm (3.8 in)	8.9 mm (0.35 in)	41 years	33 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 1946

Records set or tied on this calendar date in each year from 1802 to 1946. 1946 had 339 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 1946-05-20: 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	267
20 to 40	21
40 to 60	5
60 to 80	0
80 to 100	2