Weather Records on 20 May 1945

498 weather records were set or tied worldwide on 20 May 1945. Highest significance: Arnhem, NL.

Key Facts for 20 May 1945

On 20 May 1945, 498 weather records were set or tied at long-record stations worldwide.
41 were record highs and 188 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 0 monthly and 498 daily.
Arnhem set a daily record precipitation of 26.8 mm (1.1 in) on 20 May 1945.
Across 162 earlier years (1802 to 2026) the same calendar date averaged 455 records.

Record Map

498 stations

498 station records on 20 May 1945 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 May 1945: highest significance records shown on the map
Station	Country	Type	Value	Significance
Arnhem	Netherlands	Record daily precipitation	26.8 mm (1.1 in)	53 of 100 (Notable)
Margate Collins St	Australia	Record daily precipitation	70.1 mm (2.8 in)	52 of 100 (Notable)
Sandgate Post Office	Australia	Record daily precipitation	66.0 mm (2.6 in)	50 of 100 (Notable)
Spring Bluff Railway STN	Australia	Record daily precipitation	50.8 mm (2.0 in)	50 of 100 (Notable)
Jawaja	India	Record daily precipitation	31.0 mm (1.2 in)	48 of 100 (Notable)
Nudgee	Australia	Record daily precipitation	60.5 mm (2.4 in)	46 of 100 (Notable)
Zoetendals Vallei	South Africa	Record daily precipitation	36.1 mm (1.4 in)	45 of 100 (Notable)
Malmesbury	South Africa	Record daily precipitation	33.0 mm (1.3 in)	44 of 100 (Notable)
Marburg - Warrego Highway	Australia	Record daily precipitation	44.5 mm (1.8 in)	43 of 100 (Notable)
Amcor - Petrie Mill	Australia	Record daily precipitation	63.0 mm (2.5 in)	43 of 100 (Notable)
Robertson	South Africa	Record daily precipitation	25.7 mm (1.0 in)	42 of 100 (Notable)
Zillmere Post Office	Australia	Record daily precipitation	53.6 mm (2.1 in)	40 of 100 (Notable)
Anadia	Brazil	Record daily precipitation	87.9 mm (3.5 in)	40 of 100 (Notable)
Toowoomba	Australia	Record daily precipitation	32.0 mm (1.3 in)	38 of 100 (Notable)
Laidley Post Office	Australia	Record daily precipitation	34.8 mm (1.4 in)	35 of 100 (Notable)
Toombul Bowls Club	Australia	Record daily precipitation	52.1 mm (2.1 in)	35 of 100 (Notable)
Caledon (Pol)	South Africa	Record daily precipitation	28.2 mm (1.1 in)	35 of 100 (Notable)
Beaudesert Cryna	Australia	Record daily precipitation	35.6 mm (1.4 in)	34 of 100 (Routine)
Morningside	Australia	Record daily precipitation	38.9 mm (1.5 in)	34 of 100 (Routine)
Rock Rapids	United States	Record daily precipitation	64.0 mm (2.5 in)	34 of 100 (Routine)
Brisbane Botanical Gardens	Australia	Record daily precipitation	36.8 mm (1.4 in)	33 of 100 (Routine)
Pinkenba	Australia	Record daily precipitation	36.6 mm (1.4 in)	33 of 100 (Routine)
Brisbane Regional Office	Australia	Record daily precipitation	38.1 mm (1.5 in)	32 of 100 (Routine)
Triunfo	Brazil	Record daily precipitation	60.3 mm (2.4 in)	32 of 100 (Routine)
Grandchester Symes St	Australia	Record daily precipitation	33.5 mm (1.3 in)	31 of 100 (Routine)
Mundoolin	Australia	Record daily precipitation	32.3 mm (1.3 in)	31 of 100 (Routine)
Rosewood Walloon Rd	Australia	Record daily precipitation	33.3 mm (1.3 in)	31 of 100 (Routine)
Bald Hills Post Office	Australia	Record daily precipitation	38.1 mm (1.5 in)	31 of 100 (Routine)
Pittsworth	Australia	Record daily precipitation	29.2 mm (1.1 in)	31 of 100 (Routine)
Panskura	India	Record daily precipitation	68.6 mm (2.7 in)	31 of 100 (Routine)
The Towers	South Africa	Record daily precipitation	29.5 mm (1.2 in)	31 of 100 (Routine)
Concordia ASOS	United States	Record daily precipitation	61.0 mm (2.4 in)	31 of 100 (Routine)
Ipswich	Australia	Record daily precipitation	29.5 mm (1.2 in)	30 of 100 (Routine)
Gold Creek Reservoir	Australia	Record daily precipitation	28.7 mm (1.1 in)	30 of 100 (Routine)
Cudgen Plantation	Australia	Record daily precipitation	66.0 mm (2.6 in)	30 of 100 (Routine)
Atalaia	Brazil	Record daily precipitation	66.7 mm (2.6 in)	30 of 100 (Routine)
Bahragora	India	Record daily precipitation	51.6 mm (2.0 in)	30 of 100 (Routine)
Muddebihal	India	Record daily precipitation	27.9 mm (1.1 in)	30 of 100 (Routine)
Mount Gravatt	Australia	Record daily precipitation	34.3 mm (1.4 in)	29 of 100 (Routine)
Wolston Park Hospital	Australia	Record daily precipitation	34.0 mm (1.3 in)	29 of 100 (Routine)
Wynnum Railway Station	Australia	Record daily precipitation	40.9 mm (1.6 in)	29 of 100 (Routine)
Eersterivier (Bos)	South Africa	Record daily precipitation	27.9 mm (1.1 in)	29 of 100 (Routine)
Belle Fourche	United States	Record daily precipitation	27.2 mm (1.1 in)	29 of 100 (Routine)
Mayne Junction	Australia	Record daily precipitation	36.3 mm (1.4 in)	28 of 100 (Routine)
Oakey Post Office	Australia	Record daily precipitation	30.7 mm (1.2 in)	28 of 100 (Routine)
Colony	United States	Record daily precipitation	27.7 mm (1.1 in)	28 of 100 (Routine)
Mt Crosby	Australia	Record daily precipitation	28.4 mm (1.1 in)	27 of 100 (Routine)
Jaitram	India	Record daily precipitation	30.5 mm (1.2 in)	27 of 100 (Routine)
Enisejsk	Russia	Record high minimum temperature	10.2 C (50.4 F)	27 of 100 (Routine)
Orman Dam	United States	Record daily precipitation	33.0 mm (1.3 in)	27 of 100 (Routine)
Harrisville Post Office	Australia	Record daily precipitation	33.8 mm (1.3 in)	26 of 100 (Routine)
Goderich	Canada	Record low minimum temperature	1.7 C (35.1 F)	26 of 100 (Routine)
Augsburg (Sankt Stephan)	Germany	Record high minimum temperature	15.4 C (59.7 F)	26 of 100 (Routine)
Baliapal	India	Record daily precipitation	38.1 mm (1.5 in)	26 of 100 (Routine)
Spring Hill	United States	Record low minimum temperature	10.6 C (51.1 F)	26 of 100 (Routine)
Washington 2 ESE	United States	Record low minimum temperature	7.8 C (46.0 F)	26 of 100 (Routine)
Marietta Wtr Wks	United States	Record low minimum temperature	3.3 C (37.9 F)	26 of 100 (Routine)
Hattonvale Store	Australia	Record daily precipitation	27.9 mm (1.1 in)	25 of 100 (Routine)
Oxenford (Oberon Way)	Australia	Record daily precipitation	35.1 mm (1.4 in)	25 of 100 (Routine)
Dulacca Truck Stop	Australia	Record daily precipitation	25.9 mm (1.0 in)	25 of 100 (Routine)

Counts by Type and Timescale

498 records

Records set or tied on 20 May 1945 by type: Highest daily maximum 16, Lowest daily maximum 29, Highest daily minimum 25, Lowest daily minimum 159, Heaviest daily rainfall 267, Heaviest daily snowfall 1, Deepest snow cover 1.

Records on 20 May 1945 by type
Record type	Records
Highest daily maximum	16
Lowest daily maximum	29
Highest daily minimum	25
Lowest daily minimum	159
Heaviest daily rainfall	267
Heaviest daily snowfall	1
Deepest snow cover	1

Records on 20 May 1945 by timescale: all-time 0, monthly 0, daily 498.

How Much Records Were Beaten By

395 broken records

Margins by which the 395 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 54.9. Ties are not counted.

Top 20 by Significance

20 May 1945

Top 20 records on 20 May 1945 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 May 1945	Arnhem, NL	daily rain	26.8 mm (1.1 in)	19.6 mm (0.8 in)	32 years	53 of 100 (Notable)
20 May 1945	Margate Collins St, AU	daily rain	70.1 mm (2.8 in)	54.9 mm (2.2 in)	48 years	52 of 100 (Notable)
20 May 1945	Sandgate Post Office, AU	daily rain	66.0 mm (2.6 in)	44.4 mm (1.7 in)	48 years	50 of 100 (Notable)
20 May 1945	Spring Bluff Railway STN, AU	daily rain	50.8 mm (2.0 in)	38.1 mm (1.5 in)	48 years	50 of 100 (Notable)
20 May 1945	Jawaja, IN	daily rain	31.0 mm (1.2 in)	31.0 mm (1.2 in)	44 years	48 of 100 (Notable)
20 May 1945	Nudgee, AU	daily rain	60.5 mm (2.4 in)	54.7 mm (2.2 in)	12 years	46 of 100 (Notable)
20 May 1945	Zoetendals Vallei, ZA	daily rain	36.1 mm (1.4 in)	27.7 mm (1.1 in)	12 years	45 of 100 (Notable)
20 May 1945	Malmesbury, ZA	daily rain	33.0 mm (1.3 in)	19.3 mm (0.8 in)	53 years	44 of 100 (Notable)
20 May 1945	Marburg - Warrego Highway, AU	daily rain	44.5 mm (1.8 in)	31.0 mm (1.2 in)	48 years	43 of 100 (Notable)
20 May 1945	Amcor - Petrie Mill, AU	daily rain	63.0 mm (2.5 in)	43.9 mm (1.7 in)	48 years	43 of 100 (Notable)
20 May 1945	Robertson, ZA	daily rain	25.7 mm (1.0 in)	18.6 mm (0.7 in)	34 years	42 of 100 (Notable)
20 May 1945	Zillmere Post Office, AU	daily rain	53.6 mm (2.1 in)	42.4 mm (1.7 in)	36 years	40 of 100 (Notable)
20 May 1945	Anadia, BR	daily rain	87.9 mm (3.5 in)	48.5 mm (1.9 in)	18 years	40 of 100 (Notable)
20 May 1945	Toowoomba, AU	daily rain	32.0 mm (1.3 in)	18.8 mm (0.7 in)	48 years	38 of 100 (Notable)
20 May 1945	Laidley Post Office, AU	daily rain	34.8 mm (1.4 in)	20.3 mm (0.8 in)	48 years	35 of 100 (Notable)
20 May 1945	Toombul Bowls Club, AU	daily rain	52.1 mm (2.1 in)	23.1 mm (0.9 in)	48 years	35 of 100 (Notable)
20 May 1945	Caledon (Pol), ZA	daily rain	28.2 mm (1.1 in)	18.3 mm (0.7 in)	34 years	35 of 100 (Notable)
20 May 1945	Beaudesert Cryna, AU	daily rain	35.6 mm (1.4 in)	22.9 mm (0.9 in)	36 years	34 of 100 (Routine)
20 May 1945	Morningside, AU	daily rain	38.9 mm (1.5 in)	30.8 mm (1.2 in)	39 years	34 of 100 (Routine)
20 May 1945	Rock Rapids, US	daily rain	64.0 mm (2.5 in)	32.0 mm (1.3 in)	18 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

1802 to 1945

Records set or tied on this calendar date in each year from 1802 to 1945. 1945 had 498 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 1945-05-20: 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).

Histogram of margins by which records were beaten on 20 May 1945
Margin	Records
0 to 10	289
10 to 20	65
20 to 30	21
30 to 40	11
40 to 50	6
50 to 60	3