Weather Records on 18 May 1985

498 weather records were set or tied worldwide on 18 May 1985. Highest significance: Corozal Substn, PR.

Key Facts for 18 May 1985

On 18 May 1985, 498 weather records were set or tied at long-record stations worldwide.
134 were record highs and 160 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 17 monthly and 480 daily.
Corozal Substn set a monthly record daily precipitation of 195.1 mm (7.7 in) on 18 May 1985.
Across 164 earlier years (1796 to 2026) the same calendar date averaged 442 records.

Record Map

498 stations

498 station records on 18 May 1985 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 May 1985: highest significance records shown on the map
Station	Country	Type	Value	Significance
Corozal Substn	Puerto Rico [United States]	Record daily precipitation	195.1 mm (7.7 in)	63 of 100 (Major)
Weihenstephan-Durnast	Germany	Record daily precipitation	47.0 mm (1.9 in)	58 of 100 (Notable)
Portland	Australia	Record daily precipitation	39.0 mm (1.5 in)	55 of 100 (Notable)
Fajardo	Puerto Rico [United States]	Record daily precipitation	181.1 mm (7.1 in)	55 of 100 (Notable)
Jayuya	Puerto Rico [United States]	Record daily precipitation	141.5 mm (5.6 in)	55 of 100 (Notable)
Caonillas Utuado	Puerto Rico [United States]	Record daily precipitation	203.2 mm (8.0 in)	53 of 100 (Notable)
Flemington 5 NNW	United States	Record daily precipitation	71.1 mm (2.8 in)	50 of 100 (Notable)
Maunabo	Puerto Rico [United States]	Record daily precipitation	110.7 mm (4.4 in)	49 of 100 (Notable)
Cape Bridgewater	Australia	Record daily precipitation	46.0 mm (1.8 in)	48 of 100 (Notable)
Roosevelt Roads	Puerto Rico [United States]	Record daily precipitation	147.8 mm (5.8 in)	48 of 100 (Notable)
Millerovo	Russia	Record daily precipitation	31.9 mm (1.3 in)	46 of 100 (Notable)
Montrose	United States	Record daily precipitation	46.5 mm (1.8 in)	45 of 100 (Notable)
Cayey 1 E	Puerto Rico [United States]	Record daily precipitation	132.1 mm (5.2 in)	44 of 100 (Notable)
Cidra 1 E	Puerto Rico [United States]	Record daily precipitation	113.0 mm (4.4 in)	43 of 100 (Notable)
Encinal	United States	Record daily precipitation	88.9 mm (3.5 in)	43 of 100 (Notable)
Songpan	China	Record daily precipitation	27.4 mm (1.1 in)	40 of 100 (Notable)
Altomunster-Maisbrunn	Germany	Record daily precipitation	36.0 mm (1.4 in)	40 of 100 (Notable)
Minatitlan	Mexico	Record daily precipitation	49.8 mm (2.0 in)	40 of 100 (Notable)
Lompoc	United States	Record high minimum temperature	15.6 C (60.1 F)	40 of 100 (Notable)
Khust	Ukraine	Record daily precipitation	35.2 mm (1.4 in)	39 of 100 (Notable)
Talkeetna AP	United States	Record daily snowfall	7.1 cm (2.8 in)	39 of 100 (Notable)
Karaby-Yala	Ukraine	Record daily precipitation	51.7 mm (2.0 in)	38 of 100 (Notable)
Waiehu Camp 484	United States	Record daily precipitation	38.1 mm (1.5 in)	38 of 100 (Notable)
Combolcha	Ethiopia	Record low minimum temperature	6.0 C (42.8 F)	37 of 100 (Notable)
Coloso	Puerto Rico [United States]	Record daily precipitation	97.8 mm (3.9 in)	37 of 100 (Notable)
Chadds Ford 2 NE	United States	Record daily precipitation	58.9 mm (2.3 in)	37 of 100 (Notable)
Manchester	United States	Record daily precipitation	26.7 mm (1.1 in)	37 of 100 (Notable)
Granville Harbour	Australia	Record daily precipitation	51.8 mm (2.0 in)	36 of 100 (Notable)
Richland	United States	Record high minimum temperature	20.6 C (69.1 F)	36 of 100 (Notable)
Kaisersbach-Cronhutte	Germany	Record daily precipitation	40.4 mm (1.6 in)	35 of 100 (Notable)
Grafton	United States	Record daily precipitation	38.6 mm (1.5 in)	35 of 100 (Notable)
Indian Mills 2 W	United States	Record daily precipitation	40.4 mm (1.6 in)	35 of 100 (Notable)
W Pt	United States	Record daily precipitation	44.5 mm (1.8 in)	35 of 100 (Notable)
Norristown	United States	Record daily precipitation	43.4 mm (1.7 in)	35 of 100 (Notable)
Kingsville	United States	Record daily precipitation	87.6 mm (3.4 in)	35 of 100 (Notable)
Kenai AP	United States	Record low maximum temperature	6.1 C (43.0 F)	35 of 100 (Notable)
Dillingen/Donau	Germany	Record daily precipitation	46.2 mm (1.8 in)	34 of 100 (Routine)
Chietla	Mexico	Record daily precipitation	59.9 mm (2.4 in)	34 of 100 (Routine)
Riggins	United States	Record high minimum temperature	12.2 C (54.0 F)	34 of 100 (Routine)
Kokomo 3 WSW	United States	Record low maximum temperature	10.6 C (51.1 F)	34 of 100 (Routine)
Ripley	United States	Record low maximum temperature	20.0 C (68.0 F)	34 of 100 (Routine)
Alice	United States	Record daily precipitation	65.5 mm (2.6 in)	34 of 100 (Routine)
Muleshoe #1	United States	Record daily precipitation	34.3 mm (1.4 in)	34 of 100 (Routine)
Salzburg	Austria	Record daily precipitation	51.4 mm (2.0 in)	32 of 100 (Routine)
Beerfelden	Germany	Record daily precipitation	25.2 mm (1.0 in)	32 of 100 (Routine)
Szombathely	Hungary	Record high minimum temperature	14.1 C (57.4 F)	32 of 100 (Routine)
Jajome Alto	Puerto Rico [United States]	Record daily precipitation	188.0 mm (7.4 in)	32 of 100 (Routine)
Greenfield	United States	Record low maximum temperature	11.7 C (53.1 F)	32 of 100 (Routine)
Fitzwilliam 2 W	United States	Record daily precipitation	29.5 mm (1.2 in)	32 of 100 (Routine)
Grafton	United States	Record daily precipitation	49.5 mm (1.9 in)	32 of 100 (Routine)
Union Village Dam	United States	Record daily precipitation	43.2 mm (1.7 in)	32 of 100 (Routine)
Zolotoj	Russia	Record high minimum temperature	11.1 C (52.0 F)	31 of 100 (Routine)
Chesterfield	United States	Record daily precipitation	50.3 mm (2.0 in)	31 of 100 (Routine)
Philo 3 SW	United States	Record low maximum temperature	14.4 C (57.9 F)	31 of 100 (Routine)
Piaxtla	Mexico	Record low minimum temperature	15.0 C (59.0 F)	30 of 100 (Routine)
Glenham	United States	Record daily precipitation	33.5 mm (1.3 in)	30 of 100 (Routine)
Mohonk Lake	United States	Record daily precipitation	51.8 mm (2.0 in)	30 of 100 (Routine)
Tilden 4 SSE	United States	Record daily precipitation	26.9 mm (1.1 in)	30 of 100 (Routine)
Cape Nelson Lighthouse Compari	Australia	Record daily precipitation	31.2 mm (1.2 in)	29 of 100 (Routine)
Otatitlan	Mexico	Record daily precipitation	31.0 mm (1.2 in)	29 of 100 (Routine)

Counts by Type and Timescale

498 records

Records set or tied on 18 May 1985 by type: Highest daily maximum 44, Lowest daily maximum 91, Highest daily minimum 90, Lowest daily minimum 69, Heaviest daily rainfall 199, Heaviest daily snowfall 3, Deepest snow cover 2.

Records on 18 May 1985 by type
Record type	Records
Highest daily maximum	44
Lowest daily maximum	91
Highest daily minimum	90
Lowest daily minimum	69
Heaviest daily rainfall	199
Heaviest daily snowfall	3
Deepest snow cover	2

Records on 18 May 1985 by timescale: all-time 1, monthly 17, daily 480.

How Much Records Were Beaten By

412 broken records

Margins by which the 412 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 138.9. Ties are not counted.

Top 20 by Significance

18 May 1985

Top 20 records on 18 May 1985 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 May 1985	Corozal Substn, PR	monthly rain	195.1 mm (7.7 in)	59.7 mm (2.4 in)	51 years	63 of 100 (Major)
18 May 1985	Weihenstephan-Durnast, DE	daily rain	47.0 mm (1.9 in)	32.2 mm (1.3 in)	44 years	58 of 100 (Notable)
18 May 1985	Portland, AU	daily rain	39.0 mm (1.5 in)	8.8 mm (0.35 in)	112 years	55 of 100 (Notable)
18 May 1985	Fajardo, PR	daily rain	181.1 mm (7.1 in)	138.9 mm (5.5 in)	34 years	55 of 100 (Notable)
18 May 1985	Jayuya, PR	daily rain	141.5 mm (5.6 in)	94.3 mm (3.7 in)	28 years	55 of 100 (Notable)
18 May 1985	Caonillas Utuado, PR	all-time rain	203.2 mm (8.0 in)	44.4 mm (1.7 in)	28 years	53 of 100 (Notable)
18 May 1985	Flemington 5 NNW, US	daily rain	71.1 mm (2.8 in)	33.3 mm (1.3 in)	39 years	50 of 100 (Notable)
18 May 1985	Maunabo, PR	daily rain	110.7 mm (4.4 in)	58.6 mm (2.3 in)	44 years	49 of 100 (Notable)
18 May 1985	Cape Bridgewater, AU	daily rain	46.0 mm (1.8 in)	12.0 mm (0.5 in)	74 years	48 of 100 (Notable)
18 May 1985	Roosevelt Roads, PR	daily rain	147.8 mm (5.8 in)	117.6 mm (4.6 in)	16 years	48 of 100 (Notable)
18 May 1985	Millerovo, RU	daily rain	31.9 mm (1.3 in)	25.1 mm (1.0 in)	7 years	46 of 100 (Notable)
18 May 1985	Montrose, US	daily rain	46.5 mm (1.8 in)	26.2 mm (1.0 in)	22 years	45 of 100 (Notable)
18 May 1985	Cayey 1 E, PR	daily rain	132.1 mm (5.2 in)	99.1 mm (3.9 in)	4 years	44 of 100 (Notable)
18 May 1985	Cidra 1 E, PR	daily rain	113.0 mm (4.4 in)	43.4 mm (1.7 in)	42 years	43 of 100 (Notable)
18 May 1985	Encinal, US	daily rain	88.9 mm (3.5 in)	43.7 mm (1.7 in)	38 years	43 of 100 (Notable)
18 May 1985	Songpan, CN	daily rain	27.4 mm (1.1 in)	14.3 mm (0.6 in)	30 years	40 of 100 (Notable)
18 May 1985	Altomunster-Maisbrunn, DE	daily rain	36.0 mm (1.4 in)	21.2 mm (0.8 in)	19 years	40 of 100 (Notable)
18 May 1985	Minatitlan, MX	daily rain	49.8 mm (2.0 in)	30.0 mm (1.2 in)	60 years	40 of 100 (Notable)
18 May 1985	Lompoc, US	monthly high min	15.6 C (60.1 F)	1.2 C (2.2 F)	63 years	40 of 100 (Notable)
18 May 1985	Khust, UA	daily rain	35.2 mm (1.4 in)	19.3 mm (0.8 in)	31 years	39 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 1985

Records set or tied on this calendar date in each year from 1796 to 1985. 1985 had 498 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 1985-05-18: 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	377
20 to 40	24
40 to 60	6
60 to 80	1
80 to 100	2
100 to 120	1
120 to 140	1