Weather Records on 30 May 1934

731 weather records were set or tied worldwide on 30 May 1934. Highest significance: Lady Grey (Pol), ZA.

Key Facts for 30 May 1934

On 30 May 1934, 731 weather records were set or tied at long-record stations worldwide.
591 were record highs and 69 were record lows, counting maximum and minimum temperature.
By timescale, 12 were all-time records, 248 monthly and 471 daily.
Lady Grey (Pol) set a daily record precipitation of 33.0 mm (1.3 in) on 30 May 1934.
Across 165 earlier years (1818 to 2026) the same calendar date averaged 437 records.

Record Map

731 stations

731 station records on 30 May 1934 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 May 1934: highest significance records shown on the map
Station	Country	Type	Value	Significance
Lady Grey (Pol)	South Africa	Record daily precipitation	33.0 mm (1.3 in)	38 of 100 (Notable)
Steele 4N	United States	Record high maximum temperature	43.3 C (109.9 F)	34 of 100 (Routine)
Morden	Canada	Record high maximum temperature	41.1 C (106.0 F)	32 of 100 (Routine)
Medford	United States	Record high maximum temperature	38.3 C (100.9 F)	32 of 100 (Routine)
Denison	United States	Record high minimum temperature	23.3 C (73.9 F)	29 of 100 (Routine)
Fullerton 1 ESE	United States	Record high maximum temperature	43.3 C (109.9 F)	29 of 100 (Routine)
Mohall	United States	Record high maximum temperature	41.7 C (107.1 F)	29 of 100 (Routine)
Summerville 4W	United States	Record low maximum temperature	18.9 C (66.0 F)	29 of 100 (Routine)
American River	Australia	Record daily precipitation	39.9 mm (1.6 in)	28 of 100 (Routine)
Nurnberg	Germany	Record low minimum temperature	0.0 C (32.0 F)	28 of 100 (Routine)
Tulbagh (Pol)	South Africa	Record daily precipitation	33.0 mm (1.3 in)	28 of 100 (Routine)
Angus 1 N	United States	Record high maximum temperature	40.0 C (104.0 F)	28 of 100 (Routine)
Larimore 4SW	United States	Record high maximum temperature	41.7 C (107.1 F)	28 of 100 (Routine)
Saluda	United States	Record low maximum temperature	18.3 C (64.9 F)	28 of 100 (Routine)
Lawrence	United States	Record high maximum temperature	38.9 C (102.0 F)	27 of 100 (Routine)
Conception	United States	Record high minimum temperature	23.9 C (75.0 F)	27 of 100 (Routine)
Oakdale	United States	Record high maximum temperature	41.1 C (106.0 F)	27 of 100 (Routine)
Steele 4N	United States	Record high minimum temperature	25.6 C (78.1 F)	27 of 100 (Routine)
Tyndall	United States	Record high maximum temperature	41.7 C (107.1 F)	27 of 100 (Routine)
St Louis Eads Brg	United States	Record high maximum temperature	35.6 C (96.1 F)	27 of 100 (Routine)
Treherne	Canada	Record high minimum temperature	22.2 C (72.0 F)	26 of 100 (Routine)
Surgut	Russia	Record high minimum temperature	14.2 C (57.6 F)	26 of 100 (Routine)
Decatur Wtp	United States	Record high maximum temperature	36.7 C (98.1 F)	26 of 100 (Routine)
Atlantic 1 NE	United States	Record high minimum temperature	22.8 C (73.0 F)	26 of 100 (Routine)
Harrisonville	United States	Record high maximum temperature	39.4 C (102.9 F)	26 of 100 (Routine)
Hebron	United States	Record high maximum temperature	38.9 C (102.0 F)	26 of 100 (Routine)
Settle	United States	Record daily precipitation	31.0 mm (1.2 in)	26 of 100 (Routine)
Dickinson Exp STN	United States	Record high minimum temperature	18.9 C (66.0 F)	26 of 100 (Routine)
Highmore	United States	Record high minimum temperature	21.1 C (70.0 F)	26 of 100 (Routine)
Menno	United States	Record high minimum temperature	22.2 C (72.0 F)	26 of 100 (Routine)
Carlinville	United States	Record high maximum temperature	37.2 C (99.0 F)	25 of 100 (Routine)
Brunswick	United States	Record high maximum temperature	40.0 C (104.0 F)	25 of 100 (Routine)
Fayette	United States	Record high maximum temperature	40.6 C (105.1 F)	25 of 100 (Routine)
Grafton	United States	Record high maximum temperature	41.7 C (107.1 F)	25 of 100 (Routine)
Milbank 4 NW	United States	Record high maximum temperature	43.3 C (109.9 F)	25 of 100 (Routine)
Spearfish	United States	Record high minimum temperature	21.7 C (71.1 F)	25 of 100 (Routine)
La Crosse Wb City	United States	Record high maximum temperature	33.9 C (93.0 F)	25 of 100 (Routine)
Treherne	Canada	Record high maximum temperature	36.1 C (97.0 F)	24 of 100 (Routine)
Inwood 2 SW	United States	Record high maximum temperature	43.9 C (111.0 F)	24 of 100 (Routine)
Emporia 1 S	United States	Record high maximum temperature	40.0 C (104.0 F)	24 of 100 (Routine)
Leavenworth	United States	Record high maximum temperature	39.4 C (102.9 F)	24 of 100 (Routine)
Appleton City	United States	Record high maximum temperature	37.8 C (100.0 F)	24 of 100 (Routine)
Chama	United States	Record daily precipitation	30.5 mm (1.2 in)	24 of 100 (Routine)
Dubuque River	United States	Record high maximum temperature	34.4 C (93.9 F)	24 of 100 (Routine)
Onawa 3NW	United States	Record high maximum temperature	41.1 C (106.0 F)	23 of 100 (Routine)
Osage City	United States	Record high maximum temperature	37.8 C (100.0 F)	23 of 100 (Routine)
Amite	United States	Record low minimum temperature	11.1 C (52.0 F)	23 of 100 (Routine)
Hallock	United States	Record high maximum temperature	40.6 C (105.1 F)	23 of 100 (Routine)
Jefferson City Wtp	United States	Record high maximum temperature	38.9 C (102.0 F)	23 of 100 (Routine)
St Charles Elm Pt	United States	Record high maximum temperature	38.3 C (100.9 F)	23 of 100 (Routine)
Warsaw 1	United States	Record high maximum temperature	38.9 C (102.0 F)	23 of 100 (Routine)
Dillon U of Montana Western	United States	Record high minimum temperature	12.8 C (55.0 F)	23 of 100 (Routine)
Holter Dam	United States	Record high minimum temperature	16.1 C (61.0 F)	23 of 100 (Routine)
Auburn 5 ESE	United States	Record high minimum temperature	23.3 C (73.9 F)	23 of 100 (Routine)
Ravenna	United States	Record high maximum temperature	37.2 C (99.0 F)	23 of 100 (Routine)
W Pt	United States	Record high maximum temperature	40.0 C (104.0 F)	23 of 100 (Routine)
Morganton	United States	Record low maximum temperature	15.6 C (60.1 F)	23 of 100 (Routine)
Napoleon	United States	Record high minimum temperature	23.3 C (73.9 F)	23 of 100 (Routine)
Little Mtn	United States	Record daily precipitation	30.5 mm (1.2 in)	23 of 100 (Routine)
Miller	United States	Record high minimum temperature	21.7 C (71.1 F)	23 of 100 (Routine)

Counts by Type and Timescale

731 records

Records set or tied on 30 May 1934 by type: Highest daily maximum 396, Lowest daily maximum 32, Highest daily minimum 195, Lowest daily minimum 37, Heaviest daily rainfall 71.

Records on 30 May 1934 by type
Record type	Records
Highest daily maximum	396
Lowest daily maximum	32
Highest daily minimum	195
Lowest daily minimum	37
Heaviest daily rainfall	71
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 30 May 1934 by timescale: all-time 12, monthly 248, daily 471.

How Much Records Were Beaten By

586 broken records

Margins by which the 586 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 25.6. Ties are not counted.

Top 20 by Significance

30 May 1934

Top 20 records on 30 May 1934 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 May 1934	Lady Grey (Pol), ZA	daily rain	33.0 mm (1.3 in)	25.6 mm (1.0 in)	28 years	38 of 100 (Notable)
30 May 1934	Steele 4N, US	all-time high max	43.3 C (109.9 F)	0.5 C (0.9 F)	34 years	34 of 100 (Routine)
30 May 1934	Morden, CA	all-time high max	41.1 C (106.0 F)	1.1 C (2.0 F)	27 years	32 of 100 (Routine)
30 May 1934	Medford, US	monthly high max	38.3 C (100.9 F)	4.4 C (7.9 F)	39 years	32 of 100 (Routine)
30 May 1934	Denison, US	monthly high min	23.3 C (73.9 F)	2.2 C (4.0 F)	39 years	29 of 100 (Routine)
30 May 1934	Fullerton 1 ESE, US	all-time high max	43.3 C (109.9 F)	1.1 C (2.0 F)	16 years	29 of 100 (Routine)
30 May 1934	Mohall, US	monthly high max	41.7 C (107.1 F)	3.4 C (6.1 F)	34 years	29 of 100 (Routine)
30 May 1934	Summerville 4W, US	daily low max	18.9 C (66.0 F)	6.1 C (11.0 F)	32 years	29 of 100 (Routine)
30 May 1934	American River, AU	daily rain	39.9 mm (1.6 in)	7.1 mm (0.28 in)	44 years	28 of 100 (Routine)
30 May 1934	Nurnberg, DE	daily low min	0.0 C (32.0 F)	3.4 C (6.1 F)	49 years	28 of 100 (Routine)
30 May 1934	Tulbagh (Pol), ZA	daily rain	33.0 mm (1.3 in)	8.9 mm (0.35 in)	52 years	28 of 100 (Routine)
30 May 1934	Angus 1 N, US	all-time high max	40.0 C (104.0 F)	0.6 C (1.1 F)	16 years	28 of 100 (Routine)
30 May 1934	Larimore 4SW, US	monthly high max	41.7 C (107.1 F)	2.3 C (4.1 F)	38 years	28 of 100 (Routine)
30 May 1934	Saluda, US	daily low max	18.3 C (64.9 F)	7.3 C (13.1 F)	27 years	28 of 100 (Routine)
30 May 1934	Lawrence, US	monthly high max	38.9 C (102.0 F)	2.8 C (5.0 F)	20 years	27 of 100 (Routine)
30 May 1934	Conception, US	monthly high min	23.9 C (75.0 F)	1.1 C (2.0 F)	39 years	27 of 100 (Routine)
30 May 1934	Oakdale, US	daily high max	41.1 C (106.0 F)	8.9 C (16.0 F)	34 years	27 of 100 (Routine)
30 May 1934	Steele 4N, US	monthly high min	25.6 C (78.1 F)	6.7 C (12.1 F)	0 years	27 of 100 (Routine)
30 May 1934	Tyndall, US	monthly high max	41.7 C (107.1 F)	1.1 C (2.0 F)	40 years	27 of 100 (Routine)
30 May 1934	St Louis Eads Brg, US	monthly high max	35.6 C (96.1 F)	1.2 C (2.2 F)	38 years	27 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

1818 to 1934

Records set or tied on this calendar date in each year from 1818 to 1934. 1934 had 731 records.

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

Records on 05-30 in each year
Year	Records
1818	3
1844	1
1847	1
1848	1
1852	1
1853	1
1855	1
1856	1
1858	1
1860	2
1863	1
1864	1
1865	4
1867	1
1868	4
1870	1
1871	2
1873	4
1878	1
1879	1
1880	2
1881	1
1882	2
1883	1
1884	2
1885	1
1886	1
1887	1
1889	3
1890	1
1891	1
1892	2
1893	7
1894	2
1895	5
1896	1
1897	1
1898	2
1899	4
1900	1
1901	4
1902	9
1903	12
1904	7
1905	20
1906	8
1907	20
1908	32
1909	6
1910	22
1911	22
1912	26
1913	89
1914	25
1915	32
1916	41
1917	42
1918	31
1919	90
1920	28
1921	392
1922	72
1923	121
1924	187
1925	190
1926	201
1927	177
1928	86
1929	368
1930	530
1931	316
1932	256
1933	250
1934	731
1935	88
1936	579
1937	440
1938	309
1939	336
1940	289
1941	518
1942	500
1943	444
1944	325
1945	383
1946	310
1947	880
1948	386
1949	318
1950	376
1951	448
1952	295
1953	622
1954	271
1955	377
1956	466
1957	267
1958	480
1959	419
1960	274
1961	657
1962	454
1963	245
1964	709
1965	454
1966	326
1967	859
1968	357
1969	1,092
1970	483
1971	1,044
1972	721
1973	391
1974	631
1975	776
1976	499
1977	444
1978	888
1979	1,185
1980	650
1981	1,001
1982	981
1983	1,310
1984	2,543
1985	772
1986	1,264
1987	1,021
1988	1,371
1989	1,021
1990	983
1991	1,264
1992	1,413
1993	690
1994	834
1995	777
1996	893
1997	936
1998	1,190
1999	1,113
2000	1,391
2001	854
2002	940
2003	1,110
2004	1,219
2005	737
2006	1,179
2007	1,128
2008	829
2009	480
2010	771
2011	1,914
2012	720
2013	821
2014	551
2015	699
2016	540
2017	657
2018	1,319
2019	706
2020	920
2021	841
2022	1,034
2023	344
2024	600
2025	828
2026	525

Download the Data

Data for records on 1934-05-30: 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	525
5 to 10	49
10 to 15	7
15 to 20	3
20 to 25	1
25 to 30	1