Weather Records on 18 May 1956

795 weather records were set or tied worldwide on 18 May 1956. Highest significance: Petropavlovsk-Kamchatskij, RU.

Key Facts for 18 May 1956

On 18 May 1956, 795 weather records were set or tied at long-record stations worldwide.
562 were record highs and 144 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 16 monthly and 778 daily.
Petropavlovsk-Kamchatskij set a daily record precipitation of 34.3 mm (1.4 in) on 18 May 1956.
Across 164 earlier years (1796 to 2026) the same calendar date averaged 440 records.

Record Map

795 stations

795 station records on 18 May 1956 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 May 1956: highest significance records shown on the map
Station	Country	Type	Value	Significance
Petropavlovsk-Kamchatskij	Russia	Record daily precipitation	34.3 mm (1.4 in)	63 of 100 (Major)
Mul	India	Record daily precipitation	37.8 mm (1.5 in)	49 of 100 (Notable)
Chula Vista	United States	Record high maximum temperature	32.2 C (90.0 F)	43 of 100 (Notable)
Kappawanta	Australia	Record daily precipitation	55.9 mm (2.2 in)	40 of 100 (Notable)
Samnanger	Norway	Record daily precipitation	48.8 mm (1.9 in)	40 of 100 (Notable)
Marnai	India	Record daily precipitation	161.5 mm (6.4 in)	39 of 100 (Notable)
Pandherikawara	India	Record daily precipitation	33.0 mm (1.3 in)	36 of 100 (Notable)
Myklebust I Breim	Norway	Record snow depth	15.0 cm (5.9 in)	34 of 100 (Routine)
Buckeye	United States	Record high minimum temperature	24.4 C (75.9 F)	34 of 100 (Routine)
Agassiz Cda	Canada	Record high maximum temperature	31.1 C (88.0 F)	32 of 100 (Routine)
Nova Russas	Brazil	Record daily precipitation	80.5 mm (3.2 in)	31 of 100 (Routine)
Wymah (Gwandallen)	Australia	Record daily precipitation	26.2 mm (1.0 in)	30 of 100 (Routine)
Fredonia	United States	Record high maximum temperature	36.7 C (98.1 F)	30 of 100 (Routine)
Aberdeen	United States	Record high maximum temperature	32.2 C (90.0 F)	30 of 100 (Routine)
Buckley 1 NE	United States	Record high minimum temperature	17.8 C (64.0 F)	30 of 100 (Routine)
Brinkworth (Bungaree)	Australia	Record daily precipitation	34.3 mm (1.4 in)	29 of 100 (Routine)
Wantabadgery	Australia	Record daily precipitation	29.5 mm (1.2 in)	29 of 100 (Routine)
Cheltenham 1 NW	United States	Record low maximum temperature	13.9 C (57.0 F)	29 of 100 (Routine)
Beaver	United States	Record high maximum temperature	38.3 C (100.9 F)	29 of 100 (Routine)
The Dalles	United States	Record high minimum temperature	17.8 C (64.0 F)	29 of 100 (Routine)
Victoria Gonzales Hts	Canada	Record high maximum temperature	27.2 C (81.0 F)	28 of 100 (Routine)
Zuerich/Fluntern	Switzerland	Record daily precipitation	30.4 mm (1.2 in)	28 of 100 (Routine)
McPherson	United States	Record high maximum temperature	37.8 C (100.0 F)	28 of 100 (Routine)
Charlottesville 2W	United States	Record low maximum temperature	17.2 C (63.0 F)	28 of 100 (Routine)
Junee Reefs (Noorla)	Australia	Record daily precipitation	25.4 mm (1.0 in)	27 of 100 (Routine)
Pembroke Eddy Match	Canada	Record low maximum temperature	6.1 C (43.0 F)	27 of 100 (Routine)
El Dorado	United States	Record high maximum temperature	37.2 C (99.0 F)	27 of 100 (Routine)
Miles City	United States	Record high maximum temperature	35.6 C (96.1 F)	27 of 100 (Routine)
Bluewater 3 WSW	United States	Record high maximum temperature	31.7 C (89.1 F)	27 of 100 (Routine)
Grapeview 3 SW	United States	Record high maximum temperature	32.8 C (91.0 F)	27 of 100 (Routine)
Pomeroy	United States	Record high minimum temperature	15.6 C (60.1 F)	27 of 100 (Routine)
Holly	United States	Record high maximum temperature	37.8 C (100.0 F)	26 of 100 (Routine)
Milledgeville	United States	Record low minimum temperature	6.7 C (44.1 F)	26 of 100 (Routine)
Talbotton	United States	Record low minimum temperature	5.6 C (42.1 F)	26 of 100 (Routine)
Natchitoches	United States	Record high maximum temperature	34.4 C (93.9 F)	26 of 100 (Routine)
Paterson	United States	Record low minimum temperature	2.8 C (37.0 F)	26 of 100 (Routine)
Sussex 1 NW	United States	Record low maximum temperature	12.2 C (54.0 F)	26 of 100 (Routine)
Hennessey 4 ESE	United States	Record high maximum temperature	38.9 C (102.0 F)	26 of 100 (Routine)
Stillwater 2 W	United States	Record high maximum temperature	35.6 C (96.1 F)	26 of 100 (Routine)
Waukomis	United States	Record high maximum temperature	38.9 C (102.0 F)	26 of 100 (Routine)
Gettysburg	United States	Record low maximum temperature	11.7 C (53.1 F)	26 of 100 (Routine)
Gainesville	United States	Record high maximum temperature	37.2 C (99.0 F)	26 of 100 (Routine)
Shawnigan Lake	Canada	Record high maximum temperature	31.1 C (88.0 F)	25 of 100 (Routine)
Bull Harbour	Canada	Record high maximum temperature	20.6 C (69.1 F)	25 of 100 (Routine)
Waren	Germany	Record low minimum temperature	0.5 C (32.9 F)	25 of 100 (Routine)
Willcox	United States	Record high maximum temperature	37.2 C (99.0 F)	25 of 100 (Routine)
Winkelman 6 S	United States	Record high maximum temperature	37.8 C (100.0 F)	25 of 100 (Routine)
Liberal	United States	Record high maximum temperature	37.8 C (100.0 F)	25 of 100 (Routine)
Big Timber	United States	Record high minimum temperature	13.3 C (55.9 F)	25 of 100 (Routine)
Pauls Valley 4 WSW	United States	Record high maximum temperature	36.7 C (98.1 F)	25 of 100 (Routine)
Perry	United States	Record high maximum temperature	36.7 C (98.1 F)	25 of 100 (Routine)
Heppner	United States	Record high minimum temperature	15.6 C (60.1 F)	25 of 100 (Routine)
Johnstown	United States	Record low maximum temperature	10.0 C (50.0 F)	25 of 100 (Routine)
Pincher Creek Town	Canada	Record high maximum temperature	26.7 C (80.1 F)	24 of 100 (Routine)
Electra P H	United States	Record high minimum temperature	16.7 C (62.1 F)	24 of 100 (Routine)
Gunnison 3SW	United States	Record high maximum temperature	26.7 C (80.1 F)	24 of 100 (Routine)
Pagosa Springs 1SE	United States	Record high maximum temperature	28.9 C (84.0 F)	24 of 100 (Routine)
Telluride 4WNW	United States	Record high maximum temperature	25.6 C (78.1 F)	24 of 100 (Routine)
Newton	United States	Record high maximum temperature	37.2 C (99.0 F)	24 of 100 (Routine)
Houlton	United States	Record low minimum temperature	-5.0 C (23.0 F)	24 of 100 (Routine)

Counts by Type and Timescale

795 records

Records set or tied on 18 May 1956 by type: Highest daily maximum 415, Lowest daily maximum 74, Highest daily minimum 147, Lowest daily minimum 70, Heaviest daily rainfall 86, Deepest snow cover 3.

Records on 18 May 1956 by type
Record type	Records
Highest daily maximum	415
Lowest daily maximum	74
Highest daily minimum	147
Lowest daily minimum	70
Heaviest daily rainfall	86
Heaviest daily snowfall	0
Deepest snow cover	3

Records on 18 May 1956 by timescale: all-time 1, monthly 16, daily 778.

How Much Records Were Beaten By

609 broken records

Margins by which the 609 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 450.0. Ties are not counted.

Top 20 by Significance

18 May 1956

Top 20 records on 18 May 1956 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 May 1956	Petropavlovsk-Kamchatskij, RU	daily rain	34.3 mm (1.4 in)	26.3 mm (1.0 in)	58 years	63 of 100 (Major)
18 May 1956	Mul, IN	daily rain	37.8 mm (1.5 in)	36.5 mm (1.4 in)	15 years	49 of 100 (Notable)
18 May 1956	Chula Vista, US	daily high max	32.2 C (90.0 F)	7.8 C (14.0 F)	13 years	43 of 100 (Notable)
18 May 1956	Kappawanta, AU	all-time rain	55.9 mm (2.2 in)	1.3 mm (0.05 in)	44 years	40 of 100 (Notable)
18 May 1956	Samnanger, NO	daily rain	48.8 mm (1.9 in)	27.4 mm (1.1 in)	38 years	40 of 100 (Notable)
18 May 1956	Marnai, IN	daily rain	161.5 mm (6.4 in)	51.0 mm (2.0 in)	51 years	39 of 100 (Notable)
18 May 1956	Pandherikawara, IN	daily rain	33.0 mm (1.3 in)	27.2 mm (1.1 in)	13 years	36 of 100 (Notable)
18 May 1956	Myklebust I Breim, NO	daily snow depth	15.0 cm (5.9 in)	8.0 cm (3.1 in)	41 years	34 of 100 (Routine)
18 May 1956	Buckeye, US	monthly high min	24.4 C (75.9 F)	0.5 C (0.9 F)	59 years	34 of 100 (Routine)
18 May 1956	Agassiz Cda, CA	daily high max	31.1 C (88.0 F)	3.9 C (7.0 F)	61 years	32 of 100 (Routine)
18 May 1956	Nova Russas, BR	monthly rain	80.5 mm (3.2 in)	10.5 mm (0.4 in)	36 years	31 of 100 (Routine)
18 May 1956	Wymah (Gwandallen), AU	daily rain	26.2 mm (1.0 in)	11.7 mm (0.5 in)	42 years	30 of 100 (Routine)
18 May 1956	Fredonia, US	monthly high max	36.7 C (98.1 F)	1.1 C (2.0 F)	44 years	30 of 100 (Routine)
18 May 1956	Aberdeen, US	daily high max	32.2 C (90.0 F)	2.8 C (5.0 F)	61 years	30 of 100 (Routine)
18 May 1956	Buckley 1 NE, US	daily high min	17.8 C (64.0 F)	5.0 C (9.0 F)	30 years	30 of 100 (Routine)
18 May 1956	Brinkworth (Bungaree), AU	daily rain	34.3 mm (1.4 in)	3.6 mm (0.14 in)	56 years	29 of 100 (Routine)
18 May 1956	Wantabadgery, AU	daily rain	29.5 mm (1.2 in)	1.8 mm (0.07 in)	69 years	29 of 100 (Routine)
18 May 1956	Cheltenham 1 NW, US	daily low max	13.9 C (57.0 F)	4.4 C (7.9 F)	52 years	29 of 100 (Routine)
18 May 1956	Beaver, US	daily high max	38.3 C (100.9 F)	4.4 C (7.9 F)	54 years	29 of 100 (Routine)
18 May 1956	The Dalles, US	daily high min	17.8 C (64.0 F)	3.9 C (7.0 F)	41 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 1956

Records set or tied on this calendar date in each year from 1796 to 1956. 1956 had 795 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 1956-05-18: 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 2026-10-16. Last revised 16 October 2026 (2026-10-16).

Margin	Records
0 to 100	608
100 to 200	0
200 to 300	0
300 to 400	0
400 to 500	1