Weather Records on 18 May 2018

557 weather records were set or tied worldwide on 18 May 2018. Highest significance: Northport, US.

Key Facts for 18 May 2018

On 18 May 2018, 557 weather records were set or tied at long-record stations worldwide.
328 were record highs and 54 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 17 monthly and 539 daily.
Northport set a daily record precipitation of 46.2 mm (1.8 in) on 18 May 2018.
Across 164 earlier years (1796 to 2026) the same calendar date averaged 442 records.

Record Map

557 stations

557 station records on 18 May 2018 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 May 2018: highest significance records shown on the map
Station	Country	Type	Value	Significance
Northport	United States	Record daily precipitation	46.2 mm (1.8 in)	77 of 100 (Major)
Agartala	India	Record daily precipitation	243.1 mm (9.6 in)	74 of 100 (Major)
Padun	Russia	Record daily precipitation	34.3 mm (1.4 in)	74 of 100 (Major)
Ashland	United States	Record daily precipitation	104.6 mm (4.1 in)	70 of 100 (Major)
Patuxent River NAS	United States	Record daily precipitation	99.3 mm (3.9 in)	68 of 100 (Major)
Orangeburg 2	United States	Record daily precipitation	88.1 mm (3.5 in)	64 of 100 (Major)
Pollock	United States	Record daily precipitation	33.8 mm (1.3 in)	61 of 100 (Major)
Walkerton 2 NW	United States	Record daily precipitation	84.1 mm (3.3 in)	61 of 100 (Major)
Goodland	United States	Record daily precipitation	78.7 mm (3.1 in)	61 of 100 (Major)
Ashley	United States	Record daily precipitation	67.3 mm (2.6 in)	59 of 100 (Notable)
N Platte Rgnl AP	United States	Record daily precipitation	67.8 mm (2.7 in)	58 of 100 (Notable)
Shinjo	Japan	Record daily precipitation	68.1 mm (2.7 in)	57 of 100 (Notable)
Hendersonville 1 NE	United States	Record daily precipitation	56.6 mm (2.2 in)	56 of 100 (Notable)
Harare (Kutsaga)	Zimbabwe	Record daily precipitation	150.1 mm (5.9 in)	56 of 100 (Notable)
Asheville AP	United States	Record daily precipitation	74.2 mm (2.9 in)	54 of 100 (Notable)
Eureka	United States	Record daily precipitation	100.6 mm (4.0 in)	53 of 100 (Notable)
Chase City	United States	Record daily precipitation	174.0 mm (6.9 in)	53 of 100 (Notable)
Dalecarlia Rsvr	United States	Record daily precipitation	65.5 mm (2.6 in)	52 of 100 (Notable)
Scottsbluff W B Heilig Fld AP	United States	Record daily precipitation	41.4 mm (1.6 in)	52 of 100 (Notable)
Wallops Is Nasa Test Facility	United States	Record daily precipitation	66.3 mm (2.6 in)	50 of 100 (Notable)
Fukaura	Japan	Record daily precipitation	119.1 mm (4.7 in)	49 of 100 (Notable)
Danville Rgnl AP	United States	Record daily precipitation	100.6 mm (4.0 in)	48 of 100 (Notable)
Richmond Intl AP	United States	Record daily precipitation	98.0 mm (3.9 in)	48 of 100 (Notable)
Ft Pickett	United States	Record daily precipitation	88.9 mm (3.5 in)	46 of 100 (Notable)
Hezuo	China	Record daily precipitation	36.6 mm (1.4 in)	44 of 100 (Notable)
Winterpock	United States	Record daily precipitation	82.0 mm (3.2 in)	44 of 100 (Notable)
Pet Jorhat	India	Record daily precipitation	56.9 mm (2.2 in)	43 of 100 (Notable)
Phitsanulok/Sarit	Thailand	Record daily precipitation	170.7 mm (6.7 in)	43 of 100 (Notable)
Newnan 7 WNW	United States	Record daily precipitation	61.5 mm (2.4 in)	43 of 100 (Notable)
Stevensville 2SW	United States	Record daily precipitation	29.7 mm (1.2 in)	43 of 100 (Notable)
Salmon AP	United States	Record high minimum temperature	9.4 C (48.9 F)	42 of 100 (Notable)
Frankfort 2NE	United States	Record high maximum temperature	28.3 C (82.9 F)	42 of 100 (Notable)
La Moure	United States	Record daily precipitation	55.9 mm (2.2 in)	42 of 100 (Notable)
W Pt 2 NW	United States	Record daily precipitation	81.8 mm (3.2 in)	42 of 100 (Notable)
Intl Falls Intl AP	United States	Record daily precipitation	33.5 mm (1.3 in)	42 of 100 (Notable)
Clayton 1 SSW	United States	Record high minimum temperature	18.3 C (64.9 F)	41 of 100 (Notable)
Robinson	United States	Record high minimum temperature	20.0 C (68.0 F)	41 of 100 (Notable)
Ust-Hairyuzovo	Russia	Record high minimum temperature	6.5 C (43.7 F)	40 of 100 (Notable)
Selby	United States	Record daily precipitation	87.4 mm (3.4 in)	40 of 100 (Notable)
Clearbrook	United States	Record high minimum temperature	12.8 C (55.0 F)	40 of 100 (Notable)
Sidney	United States	Record daily precipitation	27.2 mm (1.1 in)	39 of 100 (Notable)
Danevang 1 W	United States	Record high maximum temperature	35.0 C (95.0 F)	39 of 100 (Notable)
Lenoir	United States	Record high minimum temperature	20.0 C (68.0 F)	38 of 100 (Notable)
Mc Laughlin 2SW	United States	Record daily precipitation	40.1 mm (1.6 in)	38 of 100 (Notable)
Santa Cruz	United States	Record high minimum temperature	16.1 C (61.0 F)	37 of 100 (Notable)
Mechanicsville 5 NE	United States	Record daily precipitation	54.6 mm (2.1 in)	37 of 100 (Notable)
Smithfield	United States	Record high minimum temperature	22.2 C (72.0 F)	37 of 100 (Notable)
Statesville 2 NNE	United States	Record high minimum temperature	18.9 C (66.0 F)	37 of 100 (Notable)
Napoleon	United States	Record daily precipitation	49.5 mm (1.9 in)	37 of 100 (Notable)
Hot Springs	United States	Record high minimum temperature	16.1 C (61.0 F)	37 of 100 (Notable)
John H Kerr Dam	United States	Record daily precipitation	101.9 mm (4.0 in)	37 of 100 (Notable)
Vida 6 NE	United States	Record daily precipitation	53.3 mm (2.1 in)	36 of 100 (Notable)
Highlands	United States	Record daily precipitation	71.1 mm (2.8 in)	36 of 100 (Notable)
Mutsu	Japan	Record daily precipitation	72.9 mm (2.9 in)	35 of 100 (Notable)
Oktjabrskij-Gorodok	Russia	Record high maximum temperature	30.6 C (87.1 F)	35 of 100 (Notable)
Kassler	United States	Record high maximum temperature	31.1 C (88.0 F)	35 of 100 (Notable)
Nezperce	United States	Record daily precipitation	29.7 mm (1.2 in)	35 of 100 (Notable)
Plainville 4WNW	United States	Record high minimum temperature	16.7 C (62.1 F)	35 of 100 (Notable)
Ashland	United States	Record high minimum temperature	18.3 C (64.9 F)	35 of 100 (Notable)
Hackberry 8 SSW	United States	Record high maximum temperature	33.9 C (93.0 F)	35 of 100 (Notable)

Counts by Type and Timescale

557 records

Records set or tied on 18 May 2018 by type: Highest daily maximum 119, Lowest daily maximum 31, Highest daily minimum 209, Lowest daily minimum 23, Heaviest daily rainfall 175.

Records on 18 May 2018 by type
Record type	Records
Highest daily maximum	119
Lowest daily maximum	31
Highest daily minimum	209
Lowest daily minimum	23
Heaviest daily rainfall	175
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 18 May 2018 by timescale: all-time 1, monthly 17, daily 539.

How Much Records Were Beaten By

434 broken records

Margins by which the 434 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 156.5. Ties are not counted.

Top 20 by Significance

18 May 2018

Top 20 records on 18 May 2018 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 May 2018	Northport, US	daily rain	46.2 mm (1.8 in)	20.8 mm (0.8 in)	118 years	77 of 100 (Major)
18 May 2018	Agartala, IN	daily rain	243.1 mm (9.6 in)	156.5 mm (6.2 in)	80 years	74 of 100 (Major)
18 May 2018	Padun, RU	monthly rain	34.3 mm (1.4 in)	14.2 mm (0.6 in)	53 years	74 of 100 (Major)
18 May 2018	Ashland, US	daily rain	104.6 mm (4.1 in)	74.1 mm (2.9 in)	68 years	70 of 100 (Major)
18 May 2018	Patuxent River NAS, US	daily rain	99.3 mm (3.9 in)	50.8 mm (2.0 in)	72 years	68 of 100 (Major)
18 May 2018	Orangeburg 2, US	daily rain	88.1 mm (3.5 in)	59.7 mm (2.4 in)	49 years	64 of 100 (Major)
18 May 2018	Pollock, US	daily rain	33.8 mm (1.3 in)	18.6 mm (0.7 in)	100 years	61 of 100 (Major)
18 May 2018	Walkerton 2 NW, US	daily rain	84.1 mm (3.3 in)	43.7 mm (1.7 in)	57 years	61 of 100 (Major)
18 May 2018	Goodland, US	daily rain	78.7 mm (3.1 in)	50.8 mm (2.0 in)	36 years	61 of 100 (Major)
18 May 2018	Ashley, US	daily rain	67.3 mm (2.6 in)	38.9 mm (1.5 in)	31 years	59 of 100 (Notable)
18 May 2018	N Platte Rgnl AP, US	daily rain	67.8 mm (2.7 in)	40.1 mm (1.6 in)	36 years	58 of 100 (Notable)
18 May 2018	Shinjo, JP	daily rain	68.1 mm (2.7 in)	49.6 mm (2.0 in)	36 years	57 of 100 (Notable)
18 May 2018	Hendersonville 1 NE, US	daily rain	56.6 mm (2.2 in)	26.6 mm (1.0 in)	92 years	56 of 100 (Notable)
18 May 2018	Harare (Kutsaga), ZW	daily rain	150.1 mm (5.9 in)	143.0 mm (5.6 in)	35 years	56 of 100 (Notable)
18 May 2018	Asheville AP, US	daily rain	74.2 mm (2.9 in)	42.7 mm (1.7 in)	43 years	54 of 100 (Notable)
18 May 2018	Eureka, US	monthly rain	100.6 mm (4.0 in)	10.7 mm (0.4 in)	75 years	53 of 100 (Notable)
18 May 2018	Chase City, US	all-time rain	174.0 mm (6.9 in)	34.3 mm (1.4 in)	4 years	53 of 100 (Notable)
18 May 2018	Dalecarlia Rsvr, US	daily rain	65.5 mm (2.6 in)	39.3 mm (1.5 in)	37 years	52 of 100 (Notable)
18 May 2018	Scottsbluff W B Heilig Fld AP, US	daily rain	41.4 mm (1.6 in)	11.4 mm (0.4 in)	103 years	52 of 100 (Notable)
18 May 2018	Wallops Is Nasa Test Facility, US	daily rain	66.3 mm (2.6 in)	37.1 mm (1.5 in)	41 years	50 of 100 (Notable)

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 2018

Records set or tied on this calendar date in each year from 1796 to 2018. 2018 had 557 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 2018-05-18: 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 20	397
20 to 40	25
40 to 60	8
60 to 80	2
80 to 100	0
100 to 120	0
120 to 140	0
140 to 160	2