Weather Records on 18 May 2005

630 weather records were set or tied worldwide on 18 May 2005. Highest significance: Lemmon, US.

Key Facts for 18 May 2005

On 18 May 2005, 630 weather records were set or tied at long-record stations worldwide.
163 were record highs and 280 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 20 monthly and 610 daily.
Lemmon set a daily record precipitation of 57.7 mm (2.3 in) on 18 May 2005.
Across 164 earlier years (1796 to 2026) the same calendar date averaged 441 records.

Record Map

630 stations

630 station records on 18 May 2005 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 May 2005: highest significance records shown on the map
Station	Country	Type	Value	Significance
Lemmon	United States	Record daily precipitation	57.7 mm (2.3 in)	69 of 100 (Major)
Healdsburg	United States	Record daily precipitation	136.7 mm (5.4 in)	57 of 100 (Notable)
Ensenada 1 W	Puerto Rico [United States]	Record daily precipitation	116.8 mm (4.6 in)	55 of 100 (Notable)
Campo Dell Oro	France	Record daily precipitation	34.3 mm (1.4 in)	51 of 100 (Notable)
Benmore: Younger Botanic Garde	United Kingdom	Record daily precipitation	50.2 mm (2.0 in)	51 of 100 (Notable)
Watauga S Dak 8 N	United States	Record daily precipitation	47.5 mm (1.9 in)	51 of 100 (Notable)
Zap	United States	Record daily precipitation	31.0 mm (1.2 in)	51 of 100 (Notable)
Willits 1 NE	United States	Record daily precipitation	66.0 mm (2.6 in)	49 of 100 (Notable)
Watford City 14S	United States	Record daily precipitation	38.1 mm (1.5 in)	49 of 100 (Notable)
Graz	Austria	Record daily precipitation	34.6 mm (1.4 in)	48 of 100 (Notable)
Visby_Flygplats	Sweden	Record low minimum temperature	-2.5 C (27.5 F)	48 of 100 (Notable)
Potter Valley Powerhouse	United States	Record daily precipitation	88.6 mm (3.5 in)	48 of 100 (Notable)
Mobridge 2NNW	United States	Record daily precipitation	36.3 mm (1.4 in)	48 of 100 (Notable)
Kassala	Sudan	Record daily precipitation	62.2 mm (2.4 in)	47 of 100 (Notable)
Quilcene 2 SW	United States	Record daily precipitation	46.2 mm (1.8 in)	47 of 100 (Notable)
Kalaupapa 563	United States	Record high maximum temperature	32.2 C (90.0 F)	46 of 100 (Notable)
Sexton Summit	United States	Record daily precipitation	38.4 mm (1.5 in)	45 of 100 (Notable)
Glenlee	United Kingdom	Record daily precipitation	36.6 mm (1.4 in)	44 of 100 (Notable)
Weaverville	United States	Record daily precipitation	48.3 mm (1.9 in)	44 of 100 (Notable)
Mtn Home	United States	Record daily precipitation	33.8 mm (1.3 in)	44 of 100 (Notable)
Mc Intosh 6 SE	United States	Record daily precipitation	30.0 mm (1.2 in)	44 of 100 (Notable)
Lajas Substn	Puerto Rico [United States]	Record high minimum temperature	23.9 C (75.0 F)	43 of 100 (Notable)
Vida 6 NE	United States	Record daily precipitation	29.7 mm (1.2 in)	43 of 100 (Notable)
Reeder	United States	Record daily precipitation	38.9 mm (1.5 in)	43 of 100 (Notable)
San Juan del Rio	Mexico	Record high minimum temperature	25.0 C (77.0 F)	42 of 100 (Notable)
Calistoga	United States	Record daily precipitation	50.8 mm (2.0 in)	42 of 100 (Notable)
Cote D Azur	France	Record daily precipitation	45.7 mm (1.8 in)	41 of 100 (Notable)
Mott	United States	Record daily precipitation	35.6 mm (1.4 in)	40 of 100 (Notable)
Las Flores	Mexico	Record daily precipitation	89.4 mm (3.5 in)	39 of 100 (Notable)
Tepelmeme de Morelos	Mexico	Record high maximum temperature	37.8 C (100.0 F)	39 of 100 (Notable)
Telchaquillo	Mexico	Record low maximum temperature	22.8 C (73.0 F)	39 of 100 (Notable)
Downieville	United States	Record daily precipitation	81.5 mm (3.2 in)	39 of 100 (Notable)
El Obeid	Sudan	Record daily precipitation	62.2 mm (2.4 in)	38 of 100 (Notable)
Santa Rosa	United States	Record daily precipitation	40.6 mm (1.6 in)	38 of 100 (Notable)
Scotia	United States	Record daily precipitation	38.6 mm (1.5 in)	38 of 100 (Notable)
Dobbins 1 S	United States	Record daily precipitation	53.3 mm (2.1 in)	37 of 100 (Notable)
Mt Shasta	United States	Record daily precipitation	35.6 mm (1.4 in)	37 of 100 (Notable)
Bowman	United States	Record daily precipitation	35.3 mm (1.4 in)	37 of 100 (Notable)
Makaweli 965	United States	Record high minimum temperature	22.2 C (72.0 F)	37 of 100 (Notable)
Mayaguez AP	Puerto Rico [United States]	Record daily precipitation	95.3 mm (3.8 in)	36 of 100 (Notable)
Aguirre	Puerto Rico [United States]	Record daily precipitation	94.5 mm (3.7 in)	35 of 100 (Notable)
Ust Tzilma	Russia	Record high minimum temperature	12.7 C (54.9 F)	35 of 100 (Notable)
Santa Rosa	United States	Record low maximum temperature	15.6 C (60.1 F)	35 of 100 (Notable)
Willow Creek 1 NW	United States	Record daily precipitation	57.4 mm (2.3 in)	35 of 100 (Notable)
Dusseldorf	Germany	Record low minimum temperature	1.7 C (35.1 F)	34 of 100 (Routine)
East London	South Africa	Record daily precipitation	96.8 mm (3.8 in)	34 of 100 (Routine)
Angwin Pacific Union College	United States	Record daily precipitation	58.2 mm (2.3 in)	34 of 100 (Routine)
Auburn	United States	Record low minimum temperature	1.7 C (35.1 F)	34 of 100 (Routine)
Naryn	Kyrgyzstan	Record low minimum temperature	1.0 C (33.8 F)	33 of 100 (Routine)
Colgate	United States	Record daily precipitation	33.0 mm (1.3 in)	33 of 100 (Routine)
Kleve	Germany	Record low minimum temperature	1.4 C (34.5 F)	32 of 100 (Routine)
Agedabia	Libya	Record high maximum temperature	43.5 C (110.3 F)	32 of 100 (Routine)
Cuetzalan del Progreso	Mexico	Record low minimum temperature	13.9 C (57.0 F)	32 of 100 (Routine)
Covelo	United States	Record daily precipitation	53.1 mm (2.1 in)	32 of 100 (Routine)
John Redmond Lake	United States	Record daily precipitation	73.7 mm (2.9 in)	32 of 100 (Routine)
Debrecen Airport	Hungary	Record daily precipitation	32.1 mm (1.3 in)	31 of 100 (Routine)
Shahat	Libya	Record high maximum temperature	38.0 C (100.4 F)	31 of 100 (Routine)
Orleans	United States	Record daily precipitation	48.3 mm (1.9 in)	31 of 100 (Routine)
Malta 7 E	United States	Record daily precipitation	34.8 mm (1.4 in)	31 of 100 (Routine)
Hebron	United States	Record daily precipitation	36.3 mm (1.4 in)	31 of 100 (Routine)

Counts by Type and Timescale

630 records

Records set or tied on 18 May 2005 by type: Highest daily maximum 79, Lowest daily maximum 103, Highest daily minimum 84, Lowest daily minimum 177, Heaviest daily rainfall 181, Deepest snow cover 6.

Records on 18 May 2005 by type
Record type	Records
Highest daily maximum	79
Lowest daily maximum	103
Highest daily minimum	84
Lowest daily minimum	177
Heaviest daily rainfall	181
Heaviest daily snowfall	0
Deepest snow cover	6

Records on 18 May 2005 by timescale: all-time 0, monthly 20, daily 610.

How Much Records Were Beaten By

512 broken records

Margins by which the 512 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 83.3. Ties are not counted.

Top 20 by Significance

18 May 2005

Top 20 records on 18 May 2005 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 May 2005	Lemmon, US	daily rain	57.7 mm (2.3 in)	31.5 mm (1.2 in)	86 years	69 of 100 (Major)
18 May 2005	Healdsburg, US	monthly rain	136.7 mm (5.4 in)	36.4 mm (1.4 in)	14 years	57 of 100 (Notable)
18 May 2005	Ensenada 1 W, PR	daily rain	116.8 mm (4.6 in)	83.3 mm (3.3 in)	36 years	55 of 100 (Notable)
18 May 2005	Campo Dell Oro, FR	daily rain	34.3 mm (1.4 in)	29.2 mm (1.1 in)	28 years	51 of 100 (Notable)
18 May 2005	Benmore: Younger Botanic Garde, GB	daily rain	50.2 mm (2.0 in)	31.6 mm (1.2 in)	24 years	51 of 100 (Notable)
18 May 2005	Watauga S Dak 8 N, US	daily rain	47.5 mm (1.9 in)	33.8 mm (1.3 in)	43 years	51 of 100 (Notable)
18 May 2005	Zap, US	daily rain	31.0 mm (1.2 in)	19.6 mm (0.8 in)	87 years	51 of 100 (Notable)
18 May 2005	Willits 1 NE, US	monthly rain	66.0 mm (2.6 in)	21.3 mm (0.8 in)	14 years	49 of 100 (Notable)
18 May 2005	Watford City 14S, US	daily rain	38.1 mm (1.5 in)	29.0 mm (1.1 in)	36 years	49 of 100 (Notable)
18 May 2005	Graz, AT	daily rain	34.6 mm (1.4 in)	7.0 mm (0.28 in)	103 years	48 of 100 (Notable)
18 May 2005	Visby_Flygplats, SE	daily low min	-2.5 C (27.5 F)	2.5 C (4.5 F)	111 years	48 of 100 (Notable)
18 May 2005	Potter Valley Powerhouse, US	monthly rain	88.6 mm (3.5 in)	25.1 mm (1.0 in)	14 years	48 of 100 (Notable)
18 May 2005	Mobridge 2NNW, US	daily rain	36.3 mm (1.4 in)	22.3 mm (0.9 in)	54 years	48 of 100 (Notable)
18 May 2005	Kassala, SD	daily rain	62.2 mm (2.4 in)	55.1 mm (2.2 in)	12 years	47 of 100 (Notable)
18 May 2005	Quilcene 2 SW, US	daily rain	46.2 mm (1.8 in)	17.5 mm (0.7 in)	46 years	47 of 100 (Notable)
18 May 2005	Kalaupapa 563, US	daily high max	32.2 C (90.0 F)	2.8 C (5.0 F)	70 years	46 of 100 (Notable)
18 May 2005	Sexton Summit, US	daily rain	38.4 mm (1.5 in)	17.3 mm (0.7 in)	52 years	45 of 100 (Notable)
18 May 2005	Glenlee, GB	daily rain	36.6 mm (1.4 in)	18.8 mm (0.7 in)	38 years	44 of 100 (Notable)
18 May 2005	Weaverville, US	daily rain	48.3 mm (1.9 in)	14.0 mm (0.6 in)	48 years	44 of 100 (Notable)
18 May 2005	Mtn Home, US	monthly rain	33.8 mm (1.3 in)	2.3 mm (0.09 in)	69 years	44 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 2005

Records set or tied on this calendar date in each year from 1796 to 2005. 2005 had 630 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 2005-05-18: 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	481
20 to 40	24
40 to 60	3
60 to 80	3
80 to 100	1