Weather Records on 18 May 1988

1,154 weather records were set or tied worldwide on 18 May 1988. Highest significance: Rutherglen Post Office, AU.

Key Facts for 18 May 1988

On 18 May 1988, 1,154 weather records were set or tied at long-record stations worldwide.
321 were record highs and 83 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 23 monthly and 1,129 daily.
Rutherglen Post Office set a daily record precipitation of 59.6 mm (2.3 in) on 18 May 1988.
Across 164 earlier years (1796 to 2026) the same calendar date averaged 438 records.

Record Map

1,154 stations

1,154 station records on 18 May 1988 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 May 1988: highest significance records shown on the map
Station	Country	Type	Value	Significance
Rutherglen Post Office	Australia	Record daily precipitation	59.6 mm (2.3 in)	71 of 100 (Major)
Madalya	Australia	Record daily precipitation	71.8 mm (2.8 in)	70 of 100 (Major)
St Marys (Clive Street)	Australia	Record daily precipitation	137.0 mm (5.4 in)	69 of 100 (Major)
Coonalpyn	Australia	Record daily precipitation	26.2 mm (1.0 in)	66 of 100 (Major)
Emerald Post Office	Australia	Record daily precipitation	53.0 mm (2.1 in)	65 of 100 (Major)
Boggabri Post Office	Australia	Record daily precipitation	45.2 mm (1.8 in)	64 of 100 (Major)
Jindera (Wadilock)	Australia	Record daily precipitation	46.0 mm (1.8 in)	64 of 100 (Major)
Hanover	United States	Record daily precipitation	100.3 mm (3.9 in)	64 of 100 (Major)
Conargo (Willurah)	Australia	Record daily precipitation	52.4 mm (2.1 in)	63 of 100 (Major)
Yalgogrin North (Roloma)	Australia	Record daily precipitation	40.0 mm (1.6 in)	62 of 100 (Major)
Wallabadah (Woodton)	Australia	Record daily precipitation	45.6 mm (1.8 in)	62 of 100 (Major)
Rennie (Pine View)	Australia	Record daily precipitation	101.6 mm (4.0 in)	62 of 100 (Major)
Mount Best (Upper Toora)	Australia	Record daily precipitation	52.2 mm (2.1 in)	62 of 100 (Major)
Cape Barren Island (Cape Barre	Australia	Record daily precipitation	38.6 mm (1.5 in)	62 of 100 (Major)
Morwell (Mail Centre)	Australia	Record daily precipitation	40.4 mm (1.6 in)	59 of 100 (Notable)
Hume Reservoir	Australia	Record daily precipitation	44.0 mm (1.7 in)	58 of 100 (Notable)
Lexington	United States	Record daily precipitation	46.0 mm (1.8 in)	58 of 100 (Notable)
Wee Waa (George St)	Australia	Record daily precipitation	47.4 mm (1.9 in)	57 of 100 (Notable)
Ganmain Post Office	Australia	Record daily precipitation	33.4 mm (1.3 in)	57 of 100 (Notable)
Anakie Richardson St	Australia	Record daily precipitation	72.0 mm (2.8 in)	56 of 100 (Notable)
Marrar (Centenary Drive)	Australia	Record daily precipitation	43.5 mm (1.7 in)	56 of 100 (Notable)
Duaringa Post Office	Australia	Record daily precipitation	39.0 mm (1.5 in)	55 of 100 (Notable)
Blackville Post Office	Australia	Record daily precipitation	33.6 mm (1.3 in)	55 of 100 (Notable)
Yarram	Australia	Record daily precipitation	70.0 mm (2.8 in)	55 of 100 (Notable)
Hamburg	United States	Record daily precipitation	57.9 mm (2.3 in)	55 of 100 (Notable)
Tarcutta Post Office	Australia	Record daily precipitation	42.0 mm (1.7 in)	54 of 100 (Notable)
Frederick 3 E	United States	Record daily precipitation	101.6 mm (4.0 in)	54 of 100 (Notable)
Jersey City	United States	Record daily precipitation	51.1 mm (2.0 in)	54 of 100 (Notable)
Walbundrie (Crediton Street)	Australia	Record daily precipitation	36.0 mm (1.4 in)	53 of 100 (Notable)
Hay (Miller Street)	Australia	Record daily precipitation	65.0 mm (2.6 in)	53 of 100 (Notable)
Nundle Post Office	Australia	Record daily precipitation	73.0 mm (2.9 in)	52 of 100 (Notable)
Hanging Rock State Forest	Australia	Record daily precipitation	82.0 mm (3.2 in)	52 of 100 (Notable)
Wagga Wagga (Berrillee)	Australia	Record daily precipitation	49.6 mm (2.0 in)	52 of 100 (Notable)
Corowa Airport	Australia	Record daily precipitation	40.6 mm (1.6 in)	52 of 100 (Notable)
Wytheville	United States	Record daily precipitation	43.4 mm (1.7 in)	52 of 100 (Notable)
Blackwater Post Office	Australia	Record daily precipitation	57.0 mm (2.2 in)	51 of 100 (Notable)
Bogantungan Post Office	Australia	Record daily precipitation	29.2 mm (1.1 in)	51 of 100 (Notable)
Rainworth	Australia	Record daily precipitation	25.0 mm (1.0 in)	51 of 100 (Notable)
Ungarie Post Office	Australia	Record daily precipitation	35.0 mm (1.4 in)	51 of 100 (Notable)
Bowling Alley Point (Poplars)	Australia	Record daily precipitation	59.8 mm (2.4 in)	51 of 100 (Notable)
Humula (Rylands)	Australia	Record daily precipitation	52.6 mm (2.1 in)	51 of 100 (Notable)
Urana (Nowranie)	Australia	Record daily precipitation	56.2 mm (2.2 in)	51 of 100 (Notable)
East Sale Airport	Australia	Record daily precipitation	80.8 mm (3.2 in)	51 of 100 (Notable)
Newark Liberty Intl AP	United States	Record daily precipitation	38.1 mm (1.5 in)	51 of 100 (Notable)
Bluff Post Office	Australia	Record daily precipitation	44.0 mm (1.7 in)	50 of 100 (Notable)
Springsure Comet St	Australia	Record daily precipitation	26.0 mm (1.0 in)	50 of 100 (Notable)
Lake Victoria Storage	Australia	Record daily precipitation	26.4 mm (1.0 in)	50 of 100 (Notable)
Willow Tree (Valais)	Australia	Record daily precipitation	37.2 mm (1.5 in)	50 of 100 (Notable)
Nundle (Benoni)	Australia	Record daily precipitation	69.2 mm (2.7 in)	50 of 100 (Notable)
Dungowan Station	Australia	Record daily precipitation	35.0 mm (1.4 in)	50 of 100 (Notable)
Howlong Post Office	Australia	Record daily precipitation	32.0 mm (1.3 in)	50 of 100 (Notable)
Darriman (Tarralangi)	Australia	Record daily precipitation	87.8 mm (3.5 in)	50 of 100 (Notable)
Hagerstown 1E	United States	Record daily precipitation	58.2 mm (2.3 in)	50 of 100 (Notable)
Peebinga	Australia	Record daily precipitation	40.0 mm (1.6 in)	49 of 100 (Notable)
Angledool (Angledool Station)	Australia	Record daily precipitation	25.3 mm (1.0 in)	49 of 100 (Notable)
Carabost	Australia	Record daily precipitation	39.6 mm (1.6 in)	49 of 100 (Notable)
Springhurst	Australia	Record daily precipitation	54.0 mm (2.1 in)	49 of 100 (Notable)
Anglesea	Australia	Record daily precipitation	46.8 mm (1.8 in)	49 of 100 (Notable)
Iuna	Brazil	Record daily precipitation	31.8 mm (1.3 in)	49 of 100 (Notable)
Capella Post Office	Australia	Record daily precipitation	33.0 mm (1.3 in)	48 of 100 (Notable)

Counts by Type and Timescale

1,154 records

Records set or tied on 18 May 1988 by type: Highest daily maximum 128, Lowest daily maximum 52, Highest daily minimum 193, Lowest daily minimum 31, Heaviest daily rainfall 749, Deepest snow cover 1.

Records on 18 May 1988 by type
Record type	Records
Highest daily maximum	128
Lowest daily maximum	52
Highest daily minimum	193
Lowest daily minimum	31
Heaviest daily rainfall	749
Heaviest daily snowfall	0
Deepest snow cover	1

Records on 18 May 1988 by timescale: all-time 2, monthly 23, daily 1,129.

How Much Records Were Beaten By

1,021 broken records

Margins by which the 1,021 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 101.7. Ties are not counted.

Top 20 by Significance

18 May 1988

Top 20 records on 18 May 1988 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 May 1988	Rutherglen Post Office, AU	daily rain	59.6 mm (2.3 in)	31.7 mm (1.2 in)	78 years	71 of 100 (Major)
18 May 1988	Madalya, AU	daily rain	71.8 mm (2.8 in)	46.1 mm (1.8 in)	75 years	70 of 100 (Major)
18 May 1988	St Marys (Clive Street), AU	daily rain	137.0 mm (5.4 in)	101.7 mm (4.0 in)	73 years	69 of 100 (Major)
18 May 1988	Coonalpyn, AU	daily rain	26.2 mm (1.0 in)	14.3 mm (0.6 in)	88 years	66 of 100 (Major)
18 May 1988	Emerald Post Office, AU	daily rain	53.0 mm (2.1 in)	35.2 mm (1.4 in)	93 years	65 of 100 (Major)
18 May 1988	Boggabri Post Office, AU	daily rain	45.2 mm (1.8 in)	31.0 mm (1.2 in)	95 years	64 of 100 (Major)
18 May 1988	Jindera (Wadilock), AU	daily rain	46.0 mm (1.8 in)	20.1 mm (0.8 in)	101 years	64 of 100 (Major)
18 May 1988	Hanover, US	monthly rain	100.3 mm (3.9 in)	26.9 mm (1.1 in)	72 years	64 of 100 (Major)
18 May 1988	Conargo (Willurah), AU	daily rain	52.4 mm (2.1 in)	24.5 mm (1.0 in)	88 years	63 of 100 (Major)
18 May 1988	Yalgogrin North (Roloma), AU	daily rain	40.0 mm (1.6 in)	19.2 mm (0.8 in)	97 years	62 of 100 (Major)
18 May 1988	Wallabadah (Woodton), AU	daily rain	45.6 mm (1.8 in)	28.8 mm (1.1 in)	88 years	62 of 100 (Major)
18 May 1988	Rennie (Pine View), AU	all-time rain	101.6 mm (4.0 in)	10.9 mm (0.4 in)	63 years	62 of 100 (Major)
18 May 1988	Mount Best (Upper Toora), AU	daily rain	52.2 mm (2.1 in)	33.4 mm (1.3 in)	61 years	62 of 100 (Major)
18 May 1988	Cape Barren Island (Cape Barre, AU	daily rain	38.6 mm (1.5 in)	25.4 mm (1.0 in)	64 years	62 of 100 (Major)
18 May 1988	Morwell (Mail Centre), AU	daily rain	40.4 mm (1.6 in)	16.3 mm (0.6 in)	88 years	59 of 100 (Notable)
18 May 1988	Hume Reservoir, AU	daily rain	44.0 mm (1.7 in)	29.5 mm (1.2 in)	42 years	58 of 100 (Notable)
18 May 1988	Lexington, US	daily rain	46.0 mm (1.8 in)	23.1 mm (0.9 in)	84 years	58 of 100 (Notable)
18 May 1988	Wee Waa (George St), AU	daily rain	47.4 mm (1.9 in)	27.8 mm (1.1 in)	95 years	57 of 100 (Notable)
18 May 1988	Ganmain Post Office, AU	daily rain	33.4 mm (1.3 in)	19.4 mm (0.8 in)	77 years	57 of 100 (Notable)
18 May 1988	Anakie Richardson St, AU	daily rain	72.0 mm (2.8 in)	44.6 mm (1.8 in)	80 years	56 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 1988

Records set or tied on this calendar date in each year from 1796 to 1988. 1988 had 1,154 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 1988-05-18: 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	888
20 to 40	107
40 to 60	22
60 to 80	3
80 to 100	0
100 to 120	1