Weather Records on 20 May 1903

19 weather records were set or tied worldwide on 20 May 1903. Highest significance: Robe Comparison, AU.

Key Facts for 20 May 1903

On 20 May 1903, 19 weather records were set or tied at long-record stations worldwide.
14 were record highs and 0 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 0 monthly and 18 daily.
Robe Comparison set an all-time record daily precipitation of 67.6 mm (2.7 in) on 20 May 1903.
Across 162 earlier years (1802 to 2026) the same calendar date averaged 458 records.

Record Map

19 stations

19 station records on 20 May 1903 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 May 1903: highest significance records shown on the map
Station	Country	Type	Value	Significance
Robe Comparison	Australia	Record daily precipitation	67.6 mm (2.7 in)	39 of 100 (Notable)
Ararat Post Office	Australia	Record daily precipitation	17.0 mm (0.7 in)	20 of 100 (Routine)
Stawell	Australia	Record daily precipitation	16.8 mm (0.7 in)	20 of 100 (Routine)
Toronto	Canada	Record high maximum temperature	28.3 C (82.9 F)	19 of 100 (Routine)
Toronto	Canada	Record high minimum temperature	16.7 C (62.1 F)	17 of 100 (Routine)
World Trade Ctr	United States	Record high maximum temperature	32.8 C (91.0 F)	15 of 100 (Routine)
Montreal McGill	Canada	Record high maximum temperature	28.3 C (82.9 F)	14 of 100 (Routine)
Newark Liberty Intl AP	United States	Record high minimum temperature	20.6 C (69.1 F)	14 of 100 (Routine)
Peterborough	Canada	Record high minimum temperature	15.6 C (60.1 F)	13 of 100 (Routine)
Trenton 2	United States	Record high maximum temperature	33.3 C (91.9 F)	13 of 100 (Routine)
Newark Liberty Intl AP	United States	Record high maximum temperature	33.9 C (93.0 F)	12 of 100 (Routine)
Ny City Cntrl Park	United States	Record high maximum temperature	31.7 C (89.1 F)	12 of 100 (Routine)
Rokewood (the Meadows)	Australia	Record daily precipitation	5.3 mm (0.21 in)	11 of 100 (Routine)
World Trade Ctr	United States	Record high minimum temperature	21.1 C (70.0 F)	11 of 100 (Routine)
Ny City Cntrl Park	United States	Record high minimum temperature	21.7 C (71.1 F)	8 of 100 (Routine)
Swan Hill (Murray Downs)	Australia	Record daily precipitation	11.9 mm (0.5 in)	2 of 100 (Routine)
Woodstock	Canada	Record high minimum temperature	13.9 C (57.0 F)	2 of 100 (Routine)
Kingston Queens U	Canada	Record high minimum temperature	12.8 C (55.0 F)	1 of 100 (Routine)
Baltimore Customs House	United States	Record high maximum temperature	33.3 C (91.9 F)	1 of 100 (Routine)

Counts by Type and Timescale

19 records

Records set or tied on 20 May 1903 by type: Highest daily maximum 7, Highest daily minimum 7, Heaviest daily rainfall 5.

Records on 20 May 1903 by type
Record type	Records
Highest daily maximum	7
Lowest daily maximum	0
Highest daily minimum	7
Lowest daily minimum	0
Heaviest daily rainfall	5
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 20 May 1903 by timescale: all-time 1, monthly 0, daily 18.

How Much Records Were Beaten By

15 broken records

Margins by which the 15 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 7.7. Ties are not counted.

Top 20 by Significance

20 May 1903

Top 19 records on 20 May 1903 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 May 1903	Robe Comparison, AU	all-time rain	67.6 mm (2.7 in)	4.1 mm (0.16 in)	30 years	39 of 100 (Notable)
20 May 1903	Ararat Post Office, AU	daily rain	17.0 mm (0.7 in)	7.6 mm (0.30 in)	28 years	20 of 100 (Routine)
20 May 1903	Stawell, AU	daily rain	16.8 mm (0.7 in)	7.7 mm (0.30 in)	25 years	20 of 100 (Routine)
20 May 1903	Toronto, CA	daily high max	28.3 C (82.9 F)	2.2 C (4.0 F)	31 years	19 of 100 (Routine)
20 May 1903	Toronto, CA	daily high min	16.7 C (62.1 F)	1.7 C (3.1 F)	25 years	17 of 100 (Routine)
20 May 1903	World Trade Ctr, US	daily high max	32.8 C (91.0 F)	2.8 C (5.0 F)	25 years	15 of 100 (Routine)
20 May 1903	Montreal McGill, CA	daily high max	28.3 C (82.9 F)	2.2 C (4.0 F)	23 years	14 of 100 (Routine)
20 May 1903	Newark Liberty Intl AP, US	daily high min	20.6 C (69.1 F)	1.2 C (2.2 F)	17 years	14 of 100 (Routine)
20 May 1903	Peterborough, CA	daily high min	15.6 C (60.1 F)	2.3 C (4.1 F)	22 years	13 of 100 (Routine)
20 May 1903	Trenton 2, US	daily high max	33.3 C (91.9 F)	1.6 C (2.9 F)	25 years	13 of 100 (Routine)
20 May 1903	Newark Liberty Intl AP, US	daily high max	33.9 C (93.0 F)	2.8 C (5.0 F)	4 years	12 of 100 (Routine)
20 May 1903	Ny City Cntrl Park, US	daily high max	31.7 C (89.1 F)	1.1 C (2.0 F)	25 years	12 of 100 (Routine)
20 May 1903	Rokewood (the Meadows), AU	daily rain	5.3 mm (0.21 in)	0.2 mm (0.01 in)	28 years	11 of 100 (Routine)
20 May 1903	World Trade Ctr, US	daily high min	21.1 C (70.0 F)	2.8 C (5.0 F)	4 years	11 of 100 (Routine)
20 May 1903	Ny City Cntrl Park, US	daily high min	21.7 C (71.1 F)	1.7 C (3.1 F)	4 years	8 of 100 (Routine)
20 May 1903	Swan Hill (Murray Downs), AU	daily rain (Tie)	11.9 mm (0.5 in)	tie	13 years	2 of 100 (Routine)
20 May 1903	Woodstock, CA	daily high min (Tie)	13.9 C (57.0 F)	tie	22 years	2 of 100 (Routine)
20 May 1903	Kingston Queens U, CA	daily high min (Tie)	12.8 C (55.0 F)	tie	13 years	1 of 100 (Routine)
20 May 1903	Baltimore Customs House, US	daily high max (Tie)	33.3 C (91.9 F)	tie	4 years	1 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 1903

Records set or tied on this calendar date in each year from 1802 to 1903. 1903 had 19 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 1903-05-20: 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 1	1
1 to 2	5
2 to 3	6
3 to 4	0
4 to 5	1
5 to 6	0
6 to 7	0
7 to 8	2