Weather Records on 20 May 1934

582 weather records were set or tied worldwide on 20 May 1934. Highest significance: Biskra, DZ.

Key Facts for 20 May 1934

On 20 May 1934, 582 weather records were set or tied at long-record stations worldwide.
531 were record highs and 13 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 19 monthly and 563 daily.
Biskra set a daily record precipitation of 37.5 mm (1.5 in) on 20 May 1934.
Across 162 earlier years (1802 to 2026) the same calendar date averaged 455 records.

Record Map

582 stations

582 station records on 20 May 1934 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 May 1934: highest significance records shown on the map
Station	Country	Type	Value	Significance
Biskra	Algeria	Record daily precipitation	37.5 mm (1.5 in)	35 of 100 (Notable)
Palamner	India	Record daily precipitation	37.6 mm (1.5 in)	34 of 100 (Routine)
Hambledon Mill Csr	Australia	Record daily precipitation	31.2 mm (1.2 in)	31 of 100 (Routine)
Goondi Mill Csr	Australia	Record daily precipitation	91.7 mm (3.6 in)	30 of 100 (Routine)
Chatham	Canada	Record low minimum temperature	-3.3 C (26.1 F)	30 of 100 (Routine)
Wentworth 2.5 WNW	United States	Record high minimum temperature	23.3 C (73.9 F)	30 of 100 (Routine)
Robe Comparison	Australia	Record high maximum temperature	20.6 C (69.1 F)	29 of 100 (Routine)
Simcoe	Canada	Record high maximum temperature	32.2 C (90.0 F)	29 of 100 (Routine)
Lanka	India	Record daily precipitation	42.9 mm (1.7 in)	29 of 100 (Routine)
Cleveland 2717 Euclid	United States	Record high minimum temperature	20.6 C (69.1 F)	27 of 100 (Routine)
Geryville (El-Bayadh)	Algeria	Record low maximum temperature	12.0 C (53.6 F)	24 of 100 (Routine)
Port Dover	Canada	Record high maximum temperature	28.3 C (82.9 F)	23 of 100 (Routine)
Viroqua	United States	Record high maximum temperature	35.0 C (95.0 F)	23 of 100 (Routine)
Chintalapudi	India	Record daily precipitation	38.9 mm (1.5 in)	22 of 100 (Routine)
Lowestoft	United Kingdom	Record high maximum temperature	23.3 C (73.9 F)	22 of 100 (Routine)
Fayette	United States	Record high maximum temperature	36.1 C (97.0 F)	22 of 100 (Routine)
Iowa Falls	United States	Record high maximum temperature	36.1 C (97.0 F)	22 of 100 (Routine)
Toledo Blade	United States	Record high maximum temperature	32.2 C (90.0 F)	21 of 100 (Routine)
Mifflintown	United States	Record high maximum temperature	35.6 C (96.1 F)	21 of 100 (Routine)
Sfax El-Maou	Tunisia	Record daily precipitation	17.0 mm (0.7 in)	20 of 100 (Routine)
Jacobsdal (Pol)	South Africa	Record daily precipitation	10.4 mm (0.4 in)	20 of 100 (Routine)
Polavaram	India	Record daily precipitation	23.4 mm (0.9 in)	20 of 100 (Routine)
Nerchinskij Zavod	Russia	Record daily precipitation	15.6 mm (0.6 in)	20 of 100 (Routine)
La Crosse Wb City	United States	Record high maximum temperature	34.4 C (93.9 F)	20 of 100 (Routine)
Adelaide West Terrace	Australia	Record high maximum temperature	26.0 C (78.8 F)	19 of 100 (Routine)
Turkestan	Kazakhstan	Record daily precipitation	9.9 mm (0.39 in)	19 of 100 (Routine)
Postville	United States	Record high maximum temperature	33.9 C (93.0 F)	19 of 100 (Routine)
Cumberland	United States	Record high maximum temperature	35.0 C (95.0 F)	19 of 100 (Routine)
Winona	United States	Record high maximum temperature	35.0 C (95.0 F)	19 of 100 (Routine)
Ekalaka	United States	Record high minimum temperature	15.0 C (59.0 F)	19 of 100 (Routine)
Hot Springs	United States	Record high maximum temperature	31.1 C (88.0 F)	19 of 100 (Routine)
Lynchburg - Coop	United States	Record high maximum temperature	35.6 C (96.1 F)	19 of 100 (Routine)
Madison Wb City	United States	Record high maximum temperature	32.8 C (91.0 F)	19 of 100 (Routine)
Dubuque River	United States	Record high maximum temperature	33.9 C (93.0 F)	19 of 100 (Routine)
Huron Rgnl AP	United States	Record high maximum temperature	36.7 C (98.1 F)	19 of 100 (Routine)
Newport	United States	Record high maximum temperature	22.2 C (72.0 F)	19 of 100 (Routine)
Yarrabah Comm Council	Australia	Record daily precipitation	17.5 mm (0.7 in)	18 of 100 (Routine)
Deniliquin (Wilkinson St)	Australia	Record high maximum temperature	23.9 C (75.0 F)	18 of 100 (Routine)
Nawarangpur	India	Record daily precipitation	8.6 mm (0.34 in)	18 of 100 (Routine)
Rushville	United States	Record high maximum temperature	33.3 C (91.9 F)	18 of 100 (Routine)
Olin	United States	Record high maximum temperature	34.4 C (93.9 F)	18 of 100 (Routine)
Hastings	United States	Record high minimum temperature	17.2 C (63.0 F)	18 of 100 (Routine)
Mohall	United States	Record high minimum temperature	16.1 C (61.0 F)	18 of 100 (Routine)
Philo 3 SW	United States	Record high maximum temperature	33.9 C (93.0 F)	18 of 100 (Routine)
Lewisburg	United States	Record high maximum temperature	35.0 C (95.0 F)	18 of 100 (Routine)
Williamsport	United States	Record high maximum temperature	35.0 C (95.0 F)	18 of 100 (Routine)
Hillsboro	United States	Record high maximum temperature	32.8 C (91.0 F)	18 of 100 (Routine)
Baltimore Customs House	United States	Record high maximum temperature	34.4 C (93.9 F)	18 of 100 (Routine)
Russelkonda	India	Record daily precipitation	38.1 mm (1.5 in)	17 of 100 (Routine)
Tot-Ma	Russia	Record daily precipitation	8.9 mm (0.35 in)	17 of 100 (Routine)
Madison Sewage Plt	United States	Record high maximum temperature	34.4 C (93.9 F)	17 of 100 (Routine)
Belle Plaine	United States	Record high maximum temperature	35.0 C (95.0 F)	17 of 100 (Routine)
Chariton 1 E	United States	Record high maximum temperature	32.8 C (91.0 F)	17 of 100 (Routine)
Northwood	United States	Record high minimum temperature	17.8 C (64.0 F)	17 of 100 (Routine)
Dresden	United States	Record high maximum temperature	40.0 C (104.0 F)	17 of 100 (Routine)
Maple Plain	United States	Record high maximum temperature	37.2 C (99.0 F)	17 of 100 (Routine)
Zumbrota	United States	Record high minimum temperature	20.6 C (69.1 F)	17 of 100 (Routine)
Albion	United States	Record high minimum temperature	17.2 C (63.0 F)	17 of 100 (Routine)
Wakefield 3NW	United States	Record high minimum temperature	19.4 C (66.9 F)	17 of 100 (Routine)
Amenia	United States	Record high minimum temperature	15.6 C (60.1 F)	17 of 100 (Routine)

Counts by Type and Timescale

582 records

Records set or tied on 20 May 1934 by type: Highest daily maximum 409, Lowest daily maximum 1, Highest daily minimum 122, Lowest daily minimum 12, Heaviest daily rainfall 38.

Records on 20 May 1934 by type
Record type	Records
Highest daily maximum	409
Lowest daily maximum	1
Highest daily minimum	122
Lowest daily minimum	12
Heaviest daily rainfall	38
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 20 May 1934 by timescale: all-time 0, monthly 19, daily 563.

How Much Records Were Beaten By

458 broken records

Margins by which the 458 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 40.9. Ties are not counted.

Top 20 by Significance

20 May 1934

Top 20 records on 20 May 1934 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 May 1934	Biskra, DZ	daily rain	37.5 mm (1.5 in)	37.5 mm (1.5 in)	53 years	35 of 100 (Notable)
20 May 1934	Palamner, IN	daily rain	37.6 mm (1.5 in)	31.5 mm (1.2 in)	20 years	34 of 100 (Routine)
20 May 1934	Hambledon Mill Csr, AU	daily rain	31.2 mm (1.2 in)	21.0 mm (0.8 in)	28 years	31 of 100 (Routine)
20 May 1934	Goondi Mill Csr, AU	daily rain	91.7 mm (3.6 in)	40.9 mm (1.6 in)	28 years	30 of 100 (Routine)
20 May 1934	Chatham, CA	daily low min	-3.3 C (26.1 F)	2.7 C (4.9 F)	56 years	30 of 100 (Routine)
20 May 1934	Wentworth 2.5 WNW, US	monthly high min	23.3 C (73.9 F)	2.7 C (4.9 F)	38 years	30 of 100 (Routine)
20 May 1934	Robe Comparison, AU	daily high max	20.6 C (69.1 F)	2.4 C (4.3 F)	45 years	29 of 100 (Routine)
20 May 1934	Simcoe, CA	daily high max	32.2 C (90.0 F)	2.8 C (5.0 F)	62 years	29 of 100 (Routine)
20 May 1934	Lanka, IN	daily rain	42.9 mm (1.7 in)	29.2 mm (1.1 in)	8 years	29 of 100 (Routine)
20 May 1934	Cleveland 2717 Euclid, US	daily high min	20.6 C (69.1 F)	1.7 C (3.1 F)	62 years	27 of 100 (Routine)
20 May 1934	Geryville (El-Bayadh), DZ	daily low max	12.0 C (53.6 F)	5.0 C (9.0 F)	33 years	24 of 100 (Routine)
20 May 1934	Port Dover, CA	daily high max	28.3 C (82.9 F)	0.5 C (0.9 F)	56 years	23 of 100 (Routine)
20 May 1934	Viroqua, US	daily high max	35.0 C (95.0 F)	5.6 C (10.1 F)	32 years	23 of 100 (Routine)
20 May 1934	Chintalapudi, IN	daily rain	38.9 mm (1.5 in)	21.1 mm (0.8 in)	16 years	22 of 100 (Routine)
20 May 1934	Lowestoft, GB	daily high max	23.3 C (73.9 F)	3.2 C (5.8 F)	31 years	22 of 100 (Routine)
20 May 1934	Fayette, US	daily high max	36.1 C (97.0 F)	5.5 C (9.9 F)	32 years	22 of 100 (Routine)
20 May 1934	Iowa Falls, US	daily high max	36.1 C (97.0 F)	5.5 C (9.9 F)	32 years	22 of 100 (Routine)
20 May 1934	Toledo Blade, US	daily high max	32.2 C (90.0 F)	1.1 C (2.0 F)	46 years	21 of 100 (Routine)
20 May 1934	Mifflintown, US	monthly high max	35.6 C (96.1 F)	1.2 C (2.2 F)	22 years	21 of 100 (Routine)
20 May 1934	Sfax El-Maou, TN	daily rain	17.0 mm (0.7 in)	8.0 mm (0.31 in)	20 years	20 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 1934

Records set or tied on this calendar date in each year from 1802 to 1934. 1934 had 582 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 1934-05-20: 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 10	448
10 to 20	3
20 to 30	4
30 to 40	2
40 to 50	1