Weather Records on 18 May 1929

193 weather records were set or tied worldwide on 18 May 1929. Highest significance: Casey, US.

Key Facts for 18 May 1929

On 18 May 1929, 193 weather records were set or tied at long-record stations worldwide.
27 were record highs and 64 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 5 monthly and 188 daily.
Casey set a daily record precipitation of 76.7 mm (3.0 in) on 18 May 1929.
Across 164 earlier years (1796 to 2026) the same calendar date averaged 444 records.

Record Map

193 stations

193 station records on 18 May 1929 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 May 1929: highest significance records shown on the map
Station	Country	Type	Value	Significance
Casey	United States	Record daily precipitation	76.7 mm (3.0 in)	51 of 100 (Notable)
Farmersburg	United States	Record daily precipitation	86.4 mm (3.4 in)	50 of 100 (Notable)
Ft Scott	United States	Record daily precipitation	62.0 mm (2.4 in)	49 of 100 (Notable)
Warrensburg 4NW	United States	Record daily precipitation	93.7 mm (3.7 in)	49 of 100 (Notable)
Fulton	United States	Record daily precipitation	68.6 mm (2.7 in)	47 of 100 (Notable)
Stillwater 2 W	United States	Record daily precipitation	105.2 mm (4.1 in)	45 of 100 (Notable)
Nevada Wtp	United States	Record daily precipitation	93.5 mm (3.7 in)	44 of 100 (Notable)
Boonville	United States	Record daily precipitation	65.5 mm (2.6 in)	42 of 100 (Notable)
Greenville	United States	Record daily precipitation	57.2 mm (2.3 in)	40 of 100 (Notable)
Louisiana Starks Nurse	United States	Record daily precipitation	72.4 mm (2.9 in)	38 of 100 (Notable)
St Charles Elm Pt	United States	Record daily precipitation	62.2 mm (2.4 in)	38 of 100 (Notable)
Minsk	Belarus	Record daily precipitation	52.0 mm (2.0 in)	37 of 100 (Notable)
White Hall 1 E	United States	Record daily precipitation	49.3 mm (1.9 in)	37 of 100 (Notable)
Appleton City	United States	Record daily precipitation	55.6 mm (2.2 in)	37 of 100 (Notable)
Columbia Wb City	United States	Record daily precipitation	78.7 mm (3.1 in)	35 of 100 (Notable)
Bic	Canada	Record daily snowfall	7.6 cm (3.0 in)	32 of 100 (Routine)
Brazoria	United States	Record daily precipitation	85.9 mm (3.4 in)	32 of 100 (Routine)
Mena	United States	Record daily precipitation	68.6 mm (2.7 in)	31 of 100 (Routine)
Clinton Forestry HQ	United States	Record daily precipitation	94.5 mm (3.7 in)	31 of 100 (Routine)
Mascoutah	United States	Record daily precipitation	55.4 mm (2.2 in)	29 of 100 (Routine)
La Monte	United States	Record daily precipitation	96.5 mm (3.8 in)	29 of 100 (Routine)
Grafton 1 NE	United States	Record daily precipitation	27.9 mm (1.1 in)	29 of 100 (Routine)
St Louis Eads Brg	United States	Record daily precipitation	57.2 mm (2.3 in)	29 of 100 (Routine)
Pakri	Estonia	Record daily precipitation	30.6 mm (1.2 in)	28 of 100 (Routine)
Charleston	United States	Record daily precipitation	45.7 mm (1.8 in)	26 of 100 (Routine)
Haskell	United States	Record daily precipitation	41.7 mm (1.6 in)	26 of 100 (Routine)
Scottsburg	United States	Record daily precipitation	32.5 mm (1.3 in)	25 of 100 (Routine)
Rockville	United States	Record daily precipitation	55.9 mm (2.2 in)	24 of 100 (Routine)
Warsaw 1	United States	Record daily precipitation	101.6 mm (4.0 in)	24 of 100 (Routine)
Jacksonville 2E	United States	Record daily precipitation	49.5 mm (1.9 in)	23 of 100 (Routine)
Shelbyville Sewage Plt	United States	Record daily precipitation	27.9 mm (1.1 in)	23 of 100 (Routine)
Waukomis	United States	Record daily precipitation	31.0 mm (1.2 in)	23 of 100 (Routine)
Abitibi Post	Canada	Record daily snowfall	5.1 cm (2.0 in)	22 of 100 (Routine)
Gravette	United States	Record daily precipitation	60.5 mm (2.4 in)	22 of 100 (Routine)
Warrenton 1 N	United States	Record daily precipitation	53.3 mm (2.1 in)	22 of 100 (Routine)
Qu'appelle	Canada	Record low minimum temperature	-6.7 C (19.9 F)	21 of 100 (Routine)
Pointe Au Pere	Canada	Record low maximum temperature	2.8 C (37.0 F)	21 of 100 (Routine)
Stornoway Airport	United Kingdom	Record high maximum temperature	16.7 C (62.1 F)	21 of 100 (Routine)
Marshall	United States	Record daily precipitation	45.7 mm (1.8 in)	21 of 100 (Routine)
Ebrach	Germany	Record daily precipitation	18.5 mm (0.7 in)	20 of 100 (Routine)
Pointe Au Pere	Canada	Record daily snowfall	2.5 cm (1.0 in)	20 of 100 (Routine)
Tartu	Estonia	Record daily precipitation	18.2 mm (0.7 in)	20 of 100 (Routine)
Praha-Klementinum	Czech Republic	Record daily precipitation	15.4 mm (0.6 in)	20 of 100 (Routine)
Leipzig-Schkeuditz	Germany	Record daily precipitation	14.5 mm (0.6 in)	20 of 100 (Routine)
Chicoutimi	Canada	Record daily snowfall	1.3 cm (0.5 in)	20 of 100 (Routine)
Qu'appelle	Canada	Record daily snowfall	3.8 cm (1.5 in)	20 of 100 (Routine)
Parnu	Estonia	Record daily precipitation	19.7 mm (0.8 in)	20 of 100 (Routine)
Ft Stanton	United States	Record daily precipitation	7.6 mm (0.30 in)	20 of 100 (Routine)
Santa Fe	United States	Record daily precipitation	8.4 mm (0.33 in)	20 of 100 (Routine)
Artern	Germany	Record daily precipitation	11.4 mm (0.4 in)	20 of 100 (Routine)
Leipzig-Holzhausen	Germany	Record daily precipitation	20.0 mm (0.8 in)	20 of 100 (Routine)
Bathurst	Canada	Record low maximum temperature	5.6 C (42.1 F)	20 of 100 (Routine)
Tallinn	Estonia	Record daily precipitation	19.7 mm (0.8 in)	20 of 100 (Routine)
Nurnberg	Germany	Record daily precipitation	16.8 mm (0.7 in)	20 of 100 (Routine)
Flora 5 NW	United States	Record daily precipitation	31.0 mm (1.2 in)	20 of 100 (Routine)
Pana	United States	Record daily precipitation	38.6 mm (1.5 in)	20 of 100 (Routine)
Paris Stp	United States	Record daily precipitation	50.3 mm (2.0 in)	20 of 100 (Routine)
Sedan	United States	Record daily precipitation	49.5 mm (1.9 in)	20 of 100 (Routine)
Anderson	United States	Record daily precipitation	53.8 mm (2.1 in)	20 of 100 (Routine)
Neosho	United States	Record daily precipitation	35.6 mm (1.4 in)	20 of 100 (Routine)

Counts by Type and Timescale

193 records

Records set or tied on 18 May 1929 by type: Highest daily maximum 11, Lowest daily maximum 23, Highest daily minimum 16, Lowest daily minimum 41, Heaviest daily rainfall 97, Heaviest daily snowfall 5.

Records on 18 May 1929 by type
Record type	Records
Highest daily maximum	11
Lowest daily maximum	23
Highest daily minimum	16
Lowest daily minimum	41
Heaviest daily rainfall	97
Heaviest daily snowfall	5
Deepest snow cover	0

Records on 18 May 1929 by timescale: all-time 0, monthly 5, daily 188.

How Much Records Were Beaten By

162 broken records

Margins by which the 162 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 77.8. Ties are not counted.

Top 20 by Significance

18 May 1929

Top 20 records on 18 May 1929 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 May 1929	Casey, US	daily rain	76.7 mm (3.0 in)	53.3 mm (2.1 in)	28 years	51 of 100 (Notable)
18 May 1929	Farmersburg, US	daily rain	86.4 mm (3.4 in)	57.4 mm (2.3 in)	28 years	50 of 100 (Notable)
18 May 1929	Ft Scott, US	daily rain	62.0 mm (2.4 in)	56.2 mm (2.2 in)	20 years	49 of 100 (Notable)
18 May 1929	Warrensburg 4NW, US	daily rain	93.7 mm (3.7 in)	68.3 mm (2.7 in)	20 years	49 of 100 (Notable)
18 May 1929	Fulton, US	daily rain	68.6 mm (2.7 in)	50.8 mm (2.0 in)	14 years	47 of 100 (Notable)
18 May 1929	Stillwater 2 W, US	daily rain	105.2 mm (4.1 in)	64.6 mm (2.5 in)	27 years	45 of 100 (Notable)
18 May 1929	Nevada Wtp, US	daily rain	93.5 mm (3.7 in)	77.8 mm (3.1 in)	4 years	44 of 100 (Notable)
18 May 1929	Boonville, US	daily rain	65.5 mm (2.6 in)	43.7 mm (1.7 in)	20 years	42 of 100 (Notable)
18 May 1929	Greenville, US	daily rain	57.2 mm (2.3 in)	40.9 mm (1.6 in)	20 years	40 of 100 (Notable)
18 May 1929	Louisiana Starks Nurse, US	daily rain	72.4 mm (2.9 in)	43.2 mm (1.7 in)	3 years	38 of 100 (Notable)
18 May 1929	St Charles Elm Pt, US	daily rain	62.2 mm (2.4 in)	38.8 mm (1.5 in)	28 years	38 of 100 (Notable)
18 May 1929	Minsk, BY	monthly rain	52.0 mm (2.0 in)	10.0 mm (0.4 in)	20 years	37 of 100 (Notable)
18 May 1929	White Hall 1 E, US	daily rain	49.3 mm (1.9 in)	34.1 mm (1.3 in)	23 years	37 of 100 (Notable)
18 May 1929	Appleton City, US	daily rain	55.6 mm (2.2 in)	41.6 mm (1.6 in)	28 years	37 of 100 (Notable)
18 May 1929	Columbia Wb City, US	monthly rain	78.7 mm (3.1 in)	11.9 mm (0.5 in)	38 years	35 of 100 (Notable)
18 May 1929	Bic, CA	daily snowfall	7.6 cm (3.0 in)	7.6 cm (3.0 in)	45 years	32 of 100 (Routine)
18 May 1929	Brazoria, US	daily rain	85.9 mm (3.4 in)	47.0 mm (1.9 in)	12 years	32 of 100 (Routine)
18 May 1929	Mena, US	daily rain	68.6 mm (2.7 in)	38.1 mm (1.5 in)	20 years	31 of 100 (Routine)
18 May 1929	Clinton Forestry HQ, US	daily rain	94.5 mm (3.7 in)	46.5 mm (1.8 in)	36 years	31 of 100 (Routine)
18 May 1929	Mascoutah, US	daily rain	55.4 mm (2.2 in)	37.4 mm (1.5 in)	6 years	29 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 1929

Records set or tied on this calendar date in each year from 1796 to 1929. 1929 had 193 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 1929-05-18: 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	107
10 to 20	26
20 to 30	8
30 to 40	6
40 to 50	6
50 to 60	5
60 to 70	2
70 to 80	2