Weather Records on 18 May 1951

279 weather records were set or tied worldwide on 18 May 1951. Highest significance: Duiwelskloof (Mun), ZA.

Key Facts for 18 May 1951

On 18 May 1951, 279 weather records were set or tied at long-record stations worldwide.
114 were record highs and 44 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 1 monthly and 278 daily.
Duiwelskloof (Mun) set a daily record precipitation of 44.5 mm (1.8 in) on 18 May 1951.
Across 164 earlier years (1796 to 2026) the same calendar date averaged 443 records.

Record Map

279 stations

279 station records on 18 May 1951 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 May 1951: highest significance records shown on the map
Station	Country	Type	Value	Significance
Duiwelskloof (Mun)	South Africa	Record daily precipitation	44.5 mm (1.8 in)	56 of 100 (Notable)
Apache	United States	Record daily precipitation	99.3 mm (3.9 in)	54 of 100 (Notable)
Sringeri	India	Record daily precipitation	106.7 mm (4.2 in)	47 of 100 (Notable)
Lawton	United States	Record daily precipitation	96.5 mm (3.8 in)	33 of 100 (Routine)
Altus Irig Rsch STN	United States	Record daily precipitation	58.9 mm (2.3 in)	31 of 100 (Routine)
Chickmagalur	India	Record daily precipitation	80.0 mm (3.1 in)	30 of 100 (Routine)
Fosston 1 E	United States	Record daily precipitation	30.5 mm (1.2 in)	28 of 100 (Routine)
Nalgonda	India	Record daily precipitation	36.8 mm (1.4 in)	27 of 100 (Routine)
Pulivendla	India	Record daily precipitation	45.7 mm (1.8 in)	26 of 100 (Routine)
Enisejsk	Russia	Record high minimum temperature	10.6 C (51.1 F)	26 of 100 (Routine)
Princeton	United States	Record high maximum temperature	35.0 C (95.0 F)	26 of 100 (Routine)
Moncton	Canada	Record low minimum temperature	-5.0 C (23.0 F)	25 of 100 (Routine)
Perpignan	France	Record low maximum temperature	13.6 C (56.5 F)	25 of 100 (Routine)
Mudigere	India	Record daily precipitation	50.8 mm (2.0 in)	25 of 100 (Routine)
Holton	United States	Record daily precipitation	48.8 mm (1.9 in)	25 of 100 (Routine)
Seymour 3NW	United States	Record daily precipitation	64.3 mm (2.5 in)	24 of 100 (Routine)
Selma	United States	Record high maximum temperature	35.0 C (95.0 F)	23 of 100 (Routine)
Flora 5 NW	United States	Record high minimum temperature	20.0 C (68.0 F)	23 of 100 (Routine)
Canton 4N	United States	Record high maximum temperature	34.4 C (93.9 F)	23 of 100 (Routine)
Hattiesburg 5SW	United States	Record high maximum temperature	35.6 C (96.1 F)	23 of 100 (Routine)
Elida	United States	Record daily precipitation	34.3 mm (1.4 in)	23 of 100 (Routine)
Marlow 1 WSW	United States	Record daily precipitation	59.2 mm (2.3 in)	23 of 100 (Routine)
Owk	India	Record daily precipitation	30.2 mm (1.2 in)	22 of 100 (Routine)
Satyamangalam	India	Record daily precipitation	33.0 mm (1.3 in)	22 of 100 (Routine)
Daroca	Spain	Record low maximum temperature	6.6 C (43.9 F)	22 of 100 (Routine)
Prattville	United States	Record high maximum temperature	33.9 C (93.0 F)	22 of 100 (Routine)
Hammond	United States	Record high maximum temperature	35.0 C (95.0 F)	22 of 100 (Routine)
Cambridge Water Trmt P	United States	Record low maximum temperature	16.7 C (62.1 F)	22 of 100 (Routine)
Natchez	United States	Record high maximum temperature	33.9 C (93.0 F)	22 of 100 (Routine)
Woodhouse	Australia	Record daily precipitation	27.9 mm (1.1 in)	21 of 100 (Routine)
Astana	Kazakhstan	Record high minimum temperature	15.0 C (59.0 F)	21 of 100 (Routine)
Zinder	Niger	Record low maximum temperature	37.0 C (98.6 F)	21 of 100 (Routine)
Mayfield 2 S	United States	Record high maximum temperature	32.2 C (90.0 F)	21 of 100 (Routine)
Ericson 8 WNW	United States	Record daily precipitation	28.7 mm (1.1 in)	21 of 100 (Routine)
Murdo	United States	Record daily precipitation	29.2 mm (1.1 in)	21 of 100 (Routine)
Santa Rita de Cassia	Brazil	Record daily precipitation	15.0 mm (0.6 in)	20 of 100 (Routine)
Cobbadah Post Office	Australia	Record daily precipitation	17.0 mm (0.7 in)	20 of 100 (Routine)
Schelm	South Africa	Record daily precipitation	13.2 mm (0.5 in)	20 of 100 (Routine)
Strathbogie	Australia	Record daily precipitation	17.8 mm (0.7 in)	20 of 100 (Routine)
Hanamkonda	India	Record daily precipitation	19.8 mm (0.8 in)	20 of 100 (Routine)
Dwars-In-Die-Weg	South Africa	Record daily precipitation	5.6 mm (0.22 in)	20 of 100 (Routine)
Strathmore	Australia	Record daily precipitation	11.4 mm (0.4 in)	20 of 100 (Routine)
Bahragora	India	Record daily precipitation	21.8 mm (0.9 in)	20 of 100 (Routine)
Risnes I Fjotland	Norway	Record snow depth	2.0 cm (0.8 in)	20 of 100 (Routine)
Eads	United States	Record daily precipitation	6.4 mm (0.25 in)	20 of 100 (Routine)
Glenwood 3SW	United States	Record daily precipitation	13.5 mm (0.5 in)	20 of 100 (Routine)
Macknade Sugar Mill	Australia	Record daily precipitation	17.0 mm (0.7 in)	20 of 100 (Routine)
Tarong	Australia	Record daily precipitation	9.9 mm (0.39 in)	20 of 100 (Routine)
Proddatur	India	Record daily precipitation	33.0 mm (1.3 in)	20 of 100 (Routine)
Frederick	United States	Record daily precipitation	54.6 mm (2.1 in)	20 of 100 (Routine)
Franklyn Vale	Australia	Record daily precipitation	9.1 mm (0.36 in)	19 of 100 (Routine)
Kentville Cda	Canada	Record low minimum temperature	-4.4 C (24.1 F)	19 of 100 (Routine)
Gospic	Croatia	Record low minimum temperature	1.6 C (34.9 F)	19 of 100 (Routine)
Begumpet Obsy	India	Record daily precipitation	10.9 mm (0.4 in)	19 of 100 (Routine)
Mudhol	India	Record daily precipitation	8.1 mm (0.32 in)	19 of 100 (Routine)
Kolar	India	Record daily precipitation	27.9 mm (1.1 in)	19 of 100 (Routine)
Nebo	South Africa	Record daily precipitation	2.5 mm (0.10 in)	19 of 100 (Routine)
Eastport	United States	Record low minimum temperature	1.7 C (35.1 F)	19 of 100 (Routine)
State UNIV	United States	Record high maximum temperature	33.9 C (93.0 F)	19 of 100 (Routine)
Pastura 6 SSE	United States	Record daily precipitation	3.3 mm (0.13 in)	19 of 100 (Routine)

Counts by Type and Timescale

279 records

Records set or tied on 18 May 1951 by type: Highest daily maximum 77, Lowest daily maximum 22, Highest daily minimum 37, Lowest daily minimum 22, Heaviest daily rainfall 120, Deepest snow cover 1.

Records on 18 May 1951 by type
Record type	Records
Highest daily maximum	77
Lowest daily maximum	22
Highest daily minimum	37
Lowest daily minimum	22
Heaviest daily rainfall	120
Heaviest daily snowfall	0
Deepest snow cover	1

Records on 18 May 1951 by timescale: all-time 0, monthly 1, daily 278.

How Much Records Were Beaten By

218 broken records

Margins by which the 218 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 76.2. Ties are not counted.

Top 20 by Significance

18 May 1951

Top 20 records on 18 May 1951 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 May 1951	Duiwelskloof (Mun), ZA	daily rain	44.5 mm (1.8 in)	42.5 mm (1.7 in)	40 years	56 of 100 (Notable)
18 May 1951	Apache, US	daily rain	99.3 mm (3.9 in)	74.7 mm (2.9 in)	34 years	54 of 100 (Notable)
18 May 1951	Sringeri, IN	daily rain	106.7 mm (4.2 in)	76.2 mm (3.0 in)	6 years	47 of 100 (Notable)
18 May 1951	Lawton, US	daily rain	96.5 mm (3.8 in)	49.5 mm (1.9 in)	22 years	33 of 100 (Routine)
18 May 1951	Altus Irig Rsch STN, US	daily rain	58.9 mm (2.3 in)	30.2 mm (1.2 in)	16 years	31 of 100 (Routine)
18 May 1951	Chickmagalur, IN	daily rain	80.0 mm (3.1 in)	34.3 mm (1.4 in)	14 years	30 of 100 (Routine)
18 May 1951	Fosston 1 E, US	daily rain	30.5 mm (1.2 in)	15.3 mm (0.6 in)	22 years	28 of 100 (Routine)
18 May 1951	Nalgonda, IN	daily rain	36.8 mm (1.4 in)	30.4 mm (1.2 in)	24 years	27 of 100 (Routine)
18 May 1951	Pulivendla, IN	daily rain	45.7 mm (1.8 in)	12.2 mm (0.5 in)	40 years	26 of 100 (Routine)
18 May 1951	Enisejsk, RU	daily high min	10.6 C (51.1 F)	0.2 C (0.4 F)	66 years	26 of 100 (Routine)
18 May 1951	Princeton, US	daily high max	35.0 C (95.0 F)	2.2 C (4.0 F)	56 years	26 of 100 (Routine)
18 May 1951	Moncton, CA	daily low min	-5.0 C (23.0 F)	1.7 C (3.1 F)	48 years	25 of 100 (Routine)
18 May 1951	Perpignan, FR	daily low max	13.6 C (56.5 F)	2.6 C (4.7 F)	44 years	25 of 100 (Routine)
18 May 1951	Mudigere, IN	daily rain	50.8 mm (2.0 in)	9.1 mm (0.36 in)	46 years	25 of 100 (Routine)
18 May 1951	Holton, US	daily rain	48.8 mm (1.9 in)	22.6 mm (0.9 in)	16 years	25 of 100 (Routine)
18 May 1951	Seymour 3NW, US	daily rain	64.3 mm (2.5 in)	17.8 mm (0.7 in)	36 years	24 of 100 (Routine)
18 May 1951	Selma, US	daily high max	35.0 C (95.0 F)	1.1 C (2.0 F)	52 years	23 of 100 (Routine)
18 May 1951	Flora 5 NW, US	daily high min	20.0 C (68.0 F)	1.1 C (2.0 F)	54 years	23 of 100 (Routine)
18 May 1951	Canton 4N, US	daily high max	34.4 C (93.9 F)	1.6 C (2.9 F)	44 years	23 of 100 (Routine)
18 May 1951	Hattiesburg 5SW, US	daily high max	35.6 C (96.1 F)	1.2 C (2.2 F)	51 years	23 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 1951

Records set or tied on this calendar date in each year from 1796 to 1951. 1951 had 279 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 1951-05-18: 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	183
10 to 20	23
20 to 30	5
30 to 40	3
40 to 50	2
50 to 60	0
60 to 70	0
70 to 80	2