Weather Records on 18 May 1934

390 weather records were set or tied worldwide on 18 May 1934. Highest significance: Cooktown Post Office, AU.

Key Facts for 18 May 1934

On 18 May 1934, 390 weather records were set or tied at long-record stations worldwide.
290 were record highs and 62 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 37 monthly and 353 daily.
Cooktown Post Office set a daily record precipitation of 51.1 mm (2.0 in) on 18 May 1934.
Across 164 earlier years (1796 to 2026) the same calendar date averaged 443 records.

Record Map

390 stations

390 station records on 18 May 1934 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 May 1934: highest significance records shown on the map
Station	Country	Type	Value	Significance
Cooktown Post Office	Australia	Record daily precipitation	51.1 mm (2.0 in)	51 of 100 (Notable)
Budapest	Hungary	Record daily precipitation	48.4 mm (1.9 in)	51 of 100 (Notable)
Grassy Hill Radio Otc	Australia	Record daily precipitation	38.1 mm (1.5 in)	49 of 100 (Notable)
Mt Garnet Post Office	Australia	Record daily precipitation	31.8 mm (1.3 in)	47 of 100 (Notable)
St. Petersburg	Russia	Record daily precipitation	31.4 mm (1.2 in)	47 of 100 (Notable)
Herberton White St	Australia	Record daily precipitation	28.2 mm (1.1 in)	44 of 100 (Notable)
Atherton Post Office	Australia	Record daily precipitation	30.2 mm (1.2 in)	42 of 100 (Notable)
Estherville 4E	United States	Record high maximum temperature	37.8 C (100.0 F)	28 of 100 (Routine)
Dubuque River	United States	Record high maximum temperature	34.4 C (93.9 F)	28 of 100 (Routine)
Leroy 5 WSW	United States	Record high maximum temperature	36.1 C (97.0 F)	26 of 100 (Routine)
Madison Wb City	United States	Record high maximum temperature	32.8 C (91.0 F)	26 of 100 (Routine)
Eutawville	United States	Record low maximum temperature	17.8 C (64.0 F)	25 of 100 (Routine)
Mellette 4 W	United States	Record high maximum temperature	38.3 C (100.9 F)	25 of 100 (Routine)
Lusk 2 SW	United States	Record high maximum temperature	33.9 C (93.0 F)	25 of 100 (Routine)
Low Isles Lighthouse	Australia	Record daily precipitation	60.2 mm (2.4 in)	24 of 100 (Routine)
Galway	Ireland	Record low maximum temperature	10.0 C (50.0 F)	24 of 100 (Routine)
Kampli	India	Record daily precipitation	30.5 mm (1.2 in)	24 of 100 (Routine)
Iowa Falls	United States	Record high maximum temperature	36.7 C (98.1 F)	24 of 100 (Routine)
Summerville 4W	United States	Record low maximum temperature	18.3 C (64.9 F)	24 of 100 (Routine)
Jacksonville Wb City	United States	Record low maximum temperature	21.7 C (71.1 F)	24 of 100 (Routine)
Tewantin Post Office	Australia	Record low minimum temperature	0.4 C (32.7 F)	23 of 100 (Routine)
Waterloo	United States	Record high maximum temperature	36.7 C (98.1 F)	23 of 100 (Routine)
Taos	United States	Record high maximum temperature	32.8 C (91.0 F)	23 of 100 (Routine)
Billings Wtp	United States	Record high minimum temperature	13.3 C (55.9 F)	22 of 100 (Routine)
Ekalaka	United States	Record high minimum temperature	14.4 C (57.9 F)	22 of 100 (Routine)
Blagovescensk	Russia	Record high minimum temperature	17.3 C (63.1 F)	21 of 100 (Routine)
Newport	United States	Record high maximum temperature	40.6 C (105.1 F)	21 of 100 (Routine)
Napoleon	United States	Record high maximum temperature	35.6 C (96.1 F)	21 of 100 (Routine)
Little Mtn	United States	Record low minimum temperature	8.3 C (46.9 F)	21 of 100 (Routine)
Llano	United States	Record low minimum temperature	7.2 C (45.0 F)	21 of 100 (Routine)
Kamferskraal	South Africa	Record daily precipitation	9.4 mm (0.37 in)	20 of 100 (Routine)
Mareeba Post Office	Australia	Record daily precipitation	14.0 mm (0.6 in)	20 of 100 (Routine)
Daly Waters	Australia	Record daily precipitation	1.3 mm (0.05 in)	20 of 100 (Routine)
Maraisburg (Gm)	South Africa	Record daily precipitation	8.9 mm (0.35 in)	20 of 100 (Routine)
Arnsberg	Germany	Record low minimum temperature	0.0 C (32.0 F)	20 of 100 (Routine)
Cheraw	United States	Record low minimum temperature	7.2 C (45.0 F)	20 of 100 (Routine)
Winnsboro	United States	Record low maximum temperature	16.7 C (62.1 F)	20 of 100 (Routine)
Farmington	United States	Record high minimum temperature	13.9 C (57.0 F)	20 of 100 (Routine)
Lancaster 4 WSW	United States	Record high maximum temperature	33.9 C (93.0 F)	20 of 100 (Routine)
Walsh River Post Office	Australia	Record daily precipitation	9.4 mm (0.37 in)	19 of 100 (Routine)
Boulder	United States	Record high minimum temperature	15.6 C (60.1 F)	19 of 100 (Routine)
Valparaiso Wtr Wks	United States	Record high maximum temperature	32.8 C (91.0 F)	19 of 100 (Routine)
Humboldt 3 W	United States	Record high maximum temperature	36.1 C (97.0 F)	19 of 100 (Routine)
Indianola 1SW	United States	Record high maximum temperature	33.9 C (93.0 F)	19 of 100 (Routine)
Waverly	United States	Record high maximum temperature	36.7 C (98.1 F)	19 of 100 (Routine)
Ashley	United States	Record high maximum temperature	36.1 C (97.0 F)	19 of 100 (Routine)
Faulkton	United States	Record high maximum temperature	37.8 C (100.0 F)	19 of 100 (Routine)
Kennebec	United States	Record high maximum temperature	40.0 C (104.0 F)	19 of 100 (Routine)
Laramie	United States	Record high maximum temperature	25.0 C (77.0 F)	19 of 100 (Routine)
Wheatland 4N	United States	Record high maximum temperature	32.8 C (91.0 F)	19 of 100 (Routine)
Siliguri	India	Record daily precipitation	53.1 mm (2.1 in)	18 of 100 (Routine)
Fernandina Beach	United States	Record low maximum temperature	22.2 C (72.0 F)	18 of 100 (Routine)
Belle Plaine	United States	Record high maximum temperature	35.0 C (95.0 F)	18 of 100 (Routine)
Carroll	United States	Record high maximum temperature	36.7 C (98.1 F)	18 of 100 (Routine)
Ft Dodge 5NNW	United States	Record high maximum temperature	36.1 C (97.0 F)	18 of 100 (Routine)
New Hampton	United States	Record high maximum temperature	35.6 C (96.1 F)	18 of 100 (Routine)
Winterset 4N	United States	Record high maximum temperature	33.9 C (93.0 F)	18 of 100 (Routine)
Highmore	United States	Record high maximum temperature	37.8 C (100.0 F)	18 of 100 (Routine)
Howard	United States	Record high maximum temperature	38.3 C (100.9 F)	18 of 100 (Routine)
Tyndall	United States	Record high maximum temperature	38.9 C (102.0 F)	18 of 100 (Routine)

Counts by Type and Timescale

390 records

Records set or tied on 18 May 1934 by type: Highest daily maximum 258, Lowest daily maximum 20, Highest daily minimum 32, Lowest daily minimum 42, Heaviest daily rainfall 37, Deepest snow cover 1.

Records on 18 May 1934 by type
Record type	Records
Highest daily maximum	258
Lowest daily maximum	20
Highest daily minimum	32
Lowest daily minimum	42
Heaviest daily rainfall	37
Heaviest daily snowfall	0
Deepest snow cover	1

Records on 18 May 1934 by timescale: all-time 0, monthly 37, daily 353.

How Much Records Were Beaten By

291 broken records

Margins by which the 291 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

18 May 1934

Top 20 records on 18 May 1934 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 May 1934	Cooktown Post Office, AU	daily rain	51.1 mm (2.0 in)	40.9 mm (1.6 in)	24 years	51 of 100 (Notable)
18 May 1934	Budapest, HU	daily rain	48.4 mm (1.9 in)	31.2 mm (1.2 in)	28 years	51 of 100 (Notable)
18 May 1934	Grassy Hill Radio Otc, AU	daily rain	38.1 mm (1.5 in)	30.5 mm (1.2 in)	32 years	49 of 100 (Notable)
18 May 1934	Mt Garnet Post Office, AU	daily rain	31.8 mm (1.3 in)	26.2 mm (1.0 in)	21 years	47 of 100 (Notable)
18 May 1934	St. Petersburg, RU	daily rain	31.4 mm (1.2 in)	19.0 mm (0.7 in)	11 years	47 of 100 (Notable)
18 May 1934	Herberton White St, AU	daily rain	28.2 mm (1.1 in)	20.1 mm (0.8 in)	32 years	44 of 100 (Notable)
18 May 1934	Atherton Post Office, AU	daily rain	30.2 mm (1.2 in)	17.5 mm (0.7 in)	28 years	42 of 100 (Notable)
18 May 1934	Estherville 4E, US	monthly high max	37.8 C (100.0 F)	2.2 C (4.0 F)	38 years	28 of 100 (Routine)
18 May 1934	Dubuque River, US	daily high max	34.4 C (93.9 F)	3.8 C (6.8 F)	53 years	28 of 100 (Routine)
18 May 1934	Leroy 5 WSW, US	monthly high max	36.1 C (97.0 F)	1.1 C (2.0 F)	38 years	26 of 100 (Routine)
18 May 1934	Madison Wb City, US	daily high max	32.8 C (91.0 F)	2.8 C (5.0 F)	53 years	26 of 100 (Routine)
18 May 1934	Eutawville, US	daily low max	17.8 C (64.0 F)	3.9 C (7.0 F)	38 years	25 of 100 (Routine)
18 May 1934	Mellette 4 W, US	daily high max	38.3 C (100.9 F)	6.6 C (11.9 F)	36 years	25 of 100 (Routine)
18 May 1934	Lusk 2 SW, US	monthly high max	33.9 C (93.0 F)	0.6 C (1.1 F)	36 years	25 of 100 (Routine)
18 May 1934	Low Isles Lighthouse, AU	daily rain	60.2 mm (2.4 in)	11.2 mm (0.4 in)	32 years	24 of 100 (Routine)
18 May 1934	Galway, IE	daily low max	10.0 C (50.0 F)	1.7 C (3.1 F)	42 years	24 of 100 (Routine)
18 May 1934	Kampli, IN	daily rain	30.5 mm (1.2 in)	17.8 mm (0.7 in)	32 years	24 of 100 (Routine)
18 May 1934	Iowa Falls, US	daily high max	36.7 C (98.1 F)	5.6 C (10.1 F)	36 years	24 of 100 (Routine)
18 May 1934	Summerville 4W, US	daily low max	18.3 C (64.9 F)	5.6 C (10.1 F)	20 years	24 of 100 (Routine)
18 May 1934	Jacksonville Wb City, US	daily low max	21.7 C (71.1 F)	0.5 C (0.9 F)	58 years	24 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

1796 to 1934

Records set or tied on this calendar date in each year from 1796 to 1934. 1934 had 390 records.

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

Records on 05-18 in each year
Year	Records
1796	1
1798	1
1802	2
1832	1
1833	1
1845	1
1847	1
1848	1
1855	1
1859	1
1861	2
1863	3
1864	1
1866	2
1868	2
1869	1
1870	1
1871	2
1872	1
1874	2
1877	4
1878	1
1879	1
1881	1
1883	2
1884	2
1885	1
1887	1
1888	4
1889	2
1891	1
1893	2
1894	4
1895	5
1896	2
1897	2
1898	1
1899	1
1900	13
1901	6
1902	9
1903	7
1904	11
1905	2
1906	24
1907	18
1908	5
1909	12
1910	50
1911	64
1912	5
1913	11
1914	45
1915	55
1916	74
1917	30
1918	42
1919	30
1920	26
1921	41
1922	33
1923	61
1924	92
1925	220
1926	133
1927	180
1928	160
1929	193
1930	475
1931	191
1932	460
1933	380
1934	390
1935	400
1936	282
1937	348
1938	382
1939	169
1940	315
1941	334
1942	421
1943	744
1944	496
1945	706
1946	651
1947	231
1948	426
1949	597
1950	473
1951	279
1952	493
1953	393
1954	498
1955	848
1956	795
1957	595
1958	334
1959	435
1960	404
1961	187
1962	1,199
1963	477
1964	329
1965	345
1966	438
1967	410
1968	817
1969	865
1970	703
1971	666
1972	499
1973	1,233
1974	1,097
1975	383
1976	733
1977	1,126
1978	1,090
1979	399
1980	614
1981	1,218
1982	452
1983	1,093
1984	717
1985	498
1986	1,131
1987	823
1988	1,154
1989	721
1990	753
1991	1,218
1992	921
1993	707
1994	1,015
1995	1,849
1996	1,767
1997	1,115
1998	1,060
1999	584
2000	922
2001	898
2002	1,833
2003	1,270
2004	847
2005	630
2006	1,493
2007	1,133
2008	999
2009	1,368
2010	894
2011	1,406
2012	523
2013	816
2014	609
2015	785
2016	597
2017	1,855
2018	557
2019	810
2020	706
2021	418
2022	711
2023	554
2024	551
2025	619
2026	1,131

Download the Data

Data for records on 1934-05-18: 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	276
10 to 20	9
20 to 30	3
30 to 40	2
40 to 50	1