Weather Records on 4 May 1921

62 weather records were set or tied worldwide on 4 May 1921. Highest significance: Frankfurt/Main (Feldbergstr.), DE.

Key Facts for 4 May 1921

On 4 May 1921, 62 weather records were set or tied at long-record stations worldwide.
11 were record highs and 36 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 6 monthly and 56 daily.
Frankfurt/Main (Feldbergstr.) set a daily record precipitation of 33.3 mm (1.3 in) on 4 May 1921.
Across 163 earlier years (1795 to 2026) the same calendar date averaged 433 records.

Record Map

62 stations

62 station records on 4 May 1921 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 4 May 1921: highest significance records shown on the map
Station	Country	Type	Value	Significance
Frankfurt/Main (Feldbergstr.)	Germany	Record daily precipitation	33.3 mm (1.3 in)	56 of 100 (Notable)
Montgomery Wb City	United States	Record low maximum temperature	15.0 C (59.0 F)	34 of 100 (Routine)
Jacksonville Wb City	United States	Record low minimum temperature	8.3 C (46.9 F)	32 of 100 (Routine)
Tampa	United States	Record low minimum temperature	11.1 C (52.0 F)	23 of 100 (Routine)
Wilmington Wb City	United States	Record low maximum temperature	15.6 C (60.1 F)	23 of 100 (Routine)
Philadelphia City	United States	Record daily precipitation	47.8 mm (1.9 in)	23 of 100 (Routine)
Batesville	United States	Record low maximum temperature	12.8 C (55.0 F)	22 of 100 (Routine)
Uccle	Belgium	Record low minimum temperature	-0.3 C (31.5 F)	21 of 100 (Routine)
St. Petersburg	Russia	Record daily precipitation	19.4 mm (0.8 in)	20 of 100 (Routine)
Koroit	Australia	Record daily precipitation	19.1 mm (0.8 in)	20 of 100 (Routine)
Shelford	Australia	Record daily precipitation	10.9 mm (0.4 in)	20 of 100 (Routine)
Rokewood (Kuruc A Ruc)	Australia	Record daily precipitation	15.5 mm (0.6 in)	20 of 100 (Routine)
Arnsberg	Germany	Record low maximum temperature	6.9 C (44.4 F)	20 of 100 (Routine)
Louisville	United States	Record low minimum temperature	3.9 C (39.0 F)	19 of 100 (Routine)
Bancroft	Canada	Record high minimum temperature	16.1 C (61.0 F)	18 of 100 (Routine)
Louisville	United States	Record low maximum temperature	12.8 C (55.0 F)	18 of 100 (Routine)
Karlsruhe	Germany	Record daily precipitation	19.5 mm (0.8 in)	17 of 100 (Routine)
Montgomery Wb City	United States	Record low minimum temperature	7.8 C (46.0 F)	17 of 100 (Routine)
Wagga Wagga (Kooringal)	Australia	Record high minimum temperature	15.6 C (60.1 F)	16 of 100 (Routine)
Edmonton	Canada	Record daily precipitation	7.1 mm (0.28 in)	16 of 100 (Routine)
Altastenberg	Germany	Record snow depth	3.0 cm (1.2 in)	16 of 100 (Routine)
Baltimore Customs House	United States	Record daily precipitation	33.5 mm (1.3 in)	16 of 100 (Routine)
Robe Comparison	Australia	Record high minimum temperature	16.1 C (61.0 F)	15 of 100 (Routine)
Muenster	Germany	Record low maximum temperature	8.5 C (47.3 F)	15 of 100 (Routine)
Husum	Germany	Record daily precipitation	8.8 mm (0.35 in)	15 of 100 (Routine)
Adelaide West Terrace	Australia	Record high maximum temperature	32.3 C (90.1 F)	14 of 100 (Routine)
Broke (Harrowby)	Australia	Record daily precipitation	13.5 mm (0.5 in)	14 of 100 (Routine)
Jakutsk	Russia	Record low minimum temperature	-18.1 C (-0.6 F)	14 of 100 (Routine)
Franklin	United States	Record low minimum temperature	-1.1 C (30.0 F)	14 of 100 (Routine)
Husum	Germany	Record low maximum temperature	8.1 C (46.6 F)	13 of 100 (Routine)
Mildura Post Office	Australia	Record high maximum temperature	30.0 C (86.0 F)	12 of 100 (Routine)
Weimar	Germany	Record daily precipitation	14.1 mm (0.6 in)	12 of 100 (Routine)
Gainesville UNIV of Fl	United States	Record low minimum temperature	6.7 C (44.1 F)	12 of 100 (Routine)
Bremen-Seefahrtschule	Germany	Record low maximum temperature	9.8 C (49.6 F)	11 of 100 (Routine)
Altastenberg	Germany	Record low maximum temperature	3.1 C (37.6 F)	11 of 100 (Routine)
Batesville	United States	Record low minimum temperature	3.9 C (39.0 F)	11 of 100 (Routine)
Berlin-Dahlem	Germany	Record low maximum temperature	8.5 C (47.3 F)	10 of 100 (Routine)
Brinkley	United States	Record low minimum temperature	2.8 C (37.0 F)	10 of 100 (Routine)
Prescott 2 NNW	United States	Record low maximum temperature	21.7 C (71.1 F)	10 of 100 (Routine)
Camden 1	United States	Record low minimum temperature	5.0 C (41.0 F)	9 of 100 (Routine)
Malvern	United States	Record low minimum temperature	3.3 C (37.9 F)	9 of 100 (Routine)
Brisbane Regional Office	Australia	Record high minimum temperature	17.6 C (63.7 F)	8 of 100 (Routine)
Kingston Queens U	Canada	Record high minimum temperature	10.6 C (51.1 F)	8 of 100 (Routine)
Ekaterinburg	Russia	Record high minimum temperature	8.5 C (47.3 F)	8 of 100 (Routine)
Maseskar	Sweden	Record daily precipitation	9.5 mm (0.37 in)	8 of 100 (Routine)
Prescott 2 NNW	United States	Record low minimum temperature	5.6 C (42.1 F)	8 of 100 (Routine)
Lexington	United States	Record low maximum temperature	12.2 C (54.0 F)	8 of 100 (Routine)
Deniliquin (Wilkinson St)	Australia	Record high minimum temperature	13.3 C (55.9 F)	7 of 100 (Routine)
Brinkley	United States	Record low maximum temperature	16.1 C (61.0 F)	6 of 100 (Routine)
Peterborough	Canada	Record high minimum temperature	10.0 C (50.0 F)	5 of 100 (Routine)
Malvern	United States	Record low maximum temperature	17.8 C (64.0 F)	5 of 100 (Routine)
Tampa	United States	Record low maximum temperature	18.3 C (64.9 F)	4 of 100 (Routine)
Sveg	Sweden	Record low minimum temperature	-9.5 C (14.9 F)	3 of 100 (Routine)
Simferopol	Ukraine	Record high minimum temperature	11.4 C (52.5 F)	3 of 100 (Routine)
Muenster	Germany	Record low minimum temperature	0.2 C (32.4 F)	2 of 100 (Routine)
Stuttgart	United States	Record low minimum temperature	4.4 C (39.9 F)	2 of 100 (Routine)
San Diego Wbo	United States	Record low maximum temperature	15.6 C (60.1 F)	2 of 100 (Routine)
Jacksonville Wb City	United States	Record low maximum temperature	20.0 C (68.0 F)	2 of 100 (Routine)
Orleansville (Chlef)	Algeria	Record low minimum temperature	7.0 C (44.6 F)	1 of 100 (Routine)
St Albans	Canada	Record daily snowfall	0.3 cm (0.1 in)	1 of 100 (Routine)

Counts by Type and Timescale

62 records

Records set or tied on 4 May 1921 by type: Highest daily maximum 2, Lowest daily maximum 18, Highest daily minimum 9, Lowest daily minimum 18, Heaviest daily rainfall 13, Heaviest daily snowfall 1, Deepest snow cover 1.

Records on 4 May 1921 by type
Record type	Records
Highest daily maximum	2
Lowest daily maximum	18
Highest daily minimum	9
Lowest daily minimum	18
Heaviest daily rainfall	13
Heaviest daily snowfall	1
Deepest snow cover	1

Records on 4 May 1921 by timescale: all-time 0, monthly 6, daily 56.

How Much Records Were Beaten By

50 broken records

Margins by which the 50 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 30.0. Ties are not counted.

Top 20 by Significance

4 May 1921

Top 20 records on 4 May 1921 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
4 May 1921	Frankfurt/Main (Feldbergstr.), DE	daily rain	33.3 mm (1.3 in)	23.6 mm (0.9 in)	38 years	56 of 100 (Notable)
4 May 1921	Montgomery Wb City, US	daily low max	15.0 C (59.0 F)	6.1 C (11.0 F)	43 years	34 of 100 (Routine)
4 May 1921	Jacksonville Wb City, US	daily low min	8.3 C (46.9 F)	3.9 C (7.0 F)	44 years	32 of 100 (Routine)
4 May 1921	Tampa, US	monthly low min	11.1 C (52.0 F)	0.6 C (1.1 F)	26 years	23 of 100 (Routine)
4 May 1921	Wilmington Wb City, US	daily low max	15.6 C (60.1 F)	2.2 C (4.0 F)	44 years	23 of 100 (Routine)
4 May 1921	Philadelphia City, US	daily rain	47.8 mm (1.9 in)	18.1 mm (0.7 in)	4 years	23 of 100 (Routine)
4 May 1921	Batesville, US	monthly low max	12.8 C (55.0 F)	1.1 C (2.0 F)	24 years	22 of 100 (Routine)
4 May 1921	Uccle, BE	daily low min	-0.3 C (31.5 F)	0.3 C (0.5 F)	43 years	21 of 100 (Routine)
4 May 1921	St. Petersburg, RU	daily rain	19.4 mm (0.8 in)	13.8 mm (0.5 in)	31 years	20 of 100 (Routine)
4 May 1921	Koroit, AU	daily rain	19.1 mm (0.8 in)	12.7 mm (0.5 in)	24 years	20 of 100 (Routine)
4 May 1921	Shelford, AU	daily rain	10.9 mm (0.4 in)	7.6 mm (0.30 in)	21 years	20 of 100 (Routine)
4 May 1921	Rokewood (Kuruc A Ruc), AU	daily rain	15.5 mm (0.6 in)	4.8 mm (0.19 in)	32 years	20 of 100 (Routine)
4 May 1921	Arnsberg, DE	daily low max	6.9 C (44.4 F)	3.0 C (5.4 F)	39 years	20 of 100 (Routine)
4 May 1921	Louisville, US	daily low min	3.9 C (39.0 F)	3.3 C (5.9 F)	27 years	19 of 100 (Routine)
4 May 1921	Bancroft, CA	daily high min	16.1 C (61.0 F)	6.1 C (11.0 F)	8 years	18 of 100 (Routine)
4 May 1921	Louisville, US	monthly low max	12.8 C (55.0 F)	2.2 C (4.0 F)	0 years	18 of 100 (Routine)
4 May 1921	Karlsruhe, DE	daily rain	19.5 mm (0.8 in)	6.6 mm (0.26 in)	12 years	17 of 100 (Routine)
4 May 1921	Montgomery Wb City, US	daily low min	7.8 C (46.0 F)	1.1 C (2.0 F)	31 years	17 of 100 (Routine)
4 May 1921	Wagga Wagga (Kooringal), AU	daily high min	15.6 C (60.1 F)	1.2 C (2.2 F)	31 years	16 of 100 (Routine)
4 May 1921	Edmonton, CA	daily rain	7.1 mm (0.28 in)	5.8 mm (0.23 in)	16 years	16 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

1795 to 1921

Records set or tied on this calendar date in each year from 1795 to 1921. 1921 had 62 records.

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

Records on 05-04 in each year
Year	Records
1795	1
1796	1
1820	1
1836	2
1840	1
1847	1
1850	2
1851	2
1852	1
1856	3
1858	1
1859	1
1861	2
1862	1
1864	3
1865	2
1868	3
1869	1
1870	2
1875	1
1877	2
1878	1
1879	1
1880	1
1882	1
1885	1
1886	1
1888	1
1889	4
1890	1
1892	4
1893	3
1894	6
1895	3
1896	3
1897	2
1898	2
1899	2
1900	2
1902	5
1903	8
1904	8
1905	19
1906	5
1907	37
1908	18
1909	13
1910	14
1911	37
1912	12
1913	63
1914	21
1915	75
1916	57
1917	60
1918	30
1919	69
1920	43
1921	62
1922	283
1923	82
1924	88
1925	80
1926	230
1927	112
1928	205
1929	177
1930	269
1931	169
1932	104
1933	274
1934	456
1935	518
1936	313
1937	230
1938	445
1939	295
1940	602
1941	436
1942	820
1943	358
1944	872
1945	654
1946	463
1947	649
1948	578
1949	1,130
1950	953
1951	292
1952	698
1953	389
1954	1,045
1955	471
1956	433
1957	433
1958	414
1959	613
1960	443
1961	466
1962	265
1963	313
1964	570
1965	433
1966	1,113
1967	928
1968	304
1969	377
1970	454
1971	810
1972	364
1973	313
1974	367
1975	683
1976	554
1977	736
1978	1,016
1979	1,529
1980	511
1981	667
1982	591
1983	539
1984	885
1985	821
1986	1,128
1987	1,004
1988	591
1989	743
1990	1,461
1991	1,088
1992	933
1993	791
1994	821
1995	974
1996	1,298
1997	962
1998	898
1999	1,167
2000	1,398
2001	1,345
2002	1,343
2003	1,158
2004	1,341
2005	1,152
2006	650
2007	699
2008	624
2009	727
2010	999
2011	1,023
2012	1,343
2013	1,447
2014	602
2015	622
2016	463
2017	669
2018	972
2019	574
2020	504
2021	616
2022	470
2023	681
2024	885
2025	456
2026	554

Download the Data

Data for records on 1921-05-04: 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 5	38
5 to 10	7
10 to 15	2
15 to 20	1
20 to 25	1
25 to 30	1