Weather Records on 18 May 2008

999 weather records were set or tied worldwide on 18 May 2008. Highest significance: Jesus Carranza, MX.

Key Facts for 18 May 2008

On 18 May 2008, 999 weather records were set or tied at long-record stations worldwide.
645 were record highs and 239 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 45 monthly and 953 daily.
Jesus Carranza set a monthly record daily precipitation of 154.9 mm (6.1 in) on 18 May 2008.
Across 164 earlier years (1796 to 2026) the same calendar date averaged 439 records.

Record Map

999 stations

999 station records on 18 May 2008 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 May 2008: highest significance records shown on the map
Station	Country	Type	Value	Significance
Jesus Carranza	Mexico	Record daily precipitation	154.9 mm (6.1 in)	57 of 100 (Notable)
Hebron	United States	Record snow depth	48.3 cm (19.0 in)	57 of 100 (Notable)
San Nicolas Is	United States	Record high minimum temperature	18.9 C (66.0 F)	55 of 100 (Notable)
Eichstatt-Landershofen	Germany	Record daily precipitation	29.6 mm (1.2 in)	53 of 100 (Notable)
Avila	Spain	Record daily precipitation	27.1 mm (1.1 in)	52 of 100 (Notable)
Pomona/Fairplex	United States	Record high minimum temperature	19.4 C (66.9 F)	51 of 100 (Notable)
Virginia City	United States	Record high minimum temperature	19.4 C (66.9 F)	51 of 100 (Notable)
Everett	United States	Record high maximum temperature	33.9 C (93.0 F)	51 of 100 (Notable)
Great Falls 16St	United States	Record high minimum temperature	15.6 C (60.1 F)	48 of 100 (Notable)
Ventnor (Oaklands)	Australia	Record daily precipitation	30.0 mm (1.2 in)	45 of 100 (Notable)
Colville	United States	Record high minimum temperature	12.8 C (55.0 F)	44 of 100 (Notable)
Bend	United States	Record high minimum temperature	14.4 C (57.9 F)	43 of 100 (Notable)
Lilydale	Australia	Record daily precipitation	34.0 mm (1.3 in)	42 of 100 (Notable)
Azueta	Mexico	Record daily precipitation	79.0 mm (3.1 in)	42 of 100 (Notable)
Pomona/Fairplex	United States	Record high maximum temperature	38.9 C (102.0 F)	41 of 100 (Notable)
St George	United States	Record high maximum temperature	37.2 C (99.0 F)	41 of 100 (Notable)
Lewistown AP	United States	Record high minimum temperature	11.1 C (52.0 F)	41 of 100 (Notable)
Puerto Montt	Chile	Record daily precipitation	68.3 mm (2.7 in)	40 of 100 (Notable)
Ixcamilpa (Cfe)	Mexico	Record low maximum temperature	25.0 C (77.0 F)	40 of 100 (Notable)
Ojai	United States	Record high maximum temperature	39.4 C (102.9 F)	40 of 100 (Notable)
Truckee Rs	United States	Record high maximum temperature	32.2 C (90.0 F)	40 of 100 (Notable)
Oakley	United States	Record high maximum temperature	31.1 C (88.0 F)	40 of 100 (Notable)
Pasadena	United States	Record high minimum temperature	22.2 C (72.0 F)	39 of 100 (Notable)
Riverside Fire STN 3	United States	Record high maximum temperature	39.4 C (102.9 F)	39 of 100 (Notable)
Alvin	United States	Record low minimum temperature	12.8 C (55.0 F)	39 of 100 (Notable)
Colville	United States	Record high maximum temperature	32.8 C (91.0 F)	39 of 100 (Notable)
Nemours (Ghazaouet)	Algeria	Record high minimum temperature	18.2 C (64.8 F)	38 of 100 (Notable)
Davis 2 WSW Exp Farm	United States	Record high maximum temperature	40.0 C (104.0 F)	38 of 100 (Notable)
Elsinore	United States	Record high maximum temperature	40.6 C (105.1 F)	38 of 100 (Notable)
Half Moon Bay	United States	Record high maximum temperature	23.9 C (75.0 F)	38 of 100 (Notable)
Union	United States	Record high minimum temperature	13.9 C (57.0 F)	38 of 100 (Notable)
Rocksprings	United States	Record low maximum temperature	18.3 C (64.9 F)	38 of 100 (Notable)
Lacrosse	United States	Record high minimum temperature	15.0 C (59.0 F)	38 of 100 (Notable)
Concepcion Papalo	Mexico	Record daily precipitation	43.9 mm (1.7 in)	37 of 100 (Notable)
Imlay	United States	Record high maximum temperature	34.4 C (93.9 F)	37 of 100 (Notable)
Conconully	United States	Record high maximum temperature	32.2 C (90.0 F)	37 of 100 (Notable)
Elko Rgnl AP	United States	Record high maximum temperature	32.8 C (91.0 F)	37 of 100 (Notable)
Dos Patrias	Mexico	Record low maximum temperature	23.9 C (75.0 F)	36 of 100 (Notable)
Canyon Dam	United States	Record high maximum temperature	32.8 C (91.0 F)	36 of 100 (Notable)
De Sabla	United States	Record high maximum temperature	35.0 C (95.0 F)	36 of 100 (Notable)
Riverside Fire STN 3	United States	Record high minimum temperature	23.3 C (73.9 F)	36 of 100 (Notable)
Poplarville Exp STN	United States	Record low maximum temperature	21.7 C (71.1 F)	36 of 100 (Notable)
Fallon Exp STN	United States	Record high minimum temperature	13.3 C (55.9 F)	36 of 100 (Notable)
Conroe	United States	Record low maximum temperature	21.7 C (71.1 F)	36 of 100 (Notable)
Winthrop 1 WSW	United States	Record high minimum temperature	12.2 C (54.0 F)	36 of 100 (Notable)
Dromana Sussex Farm	Australia	Record daily precipitation	29.2 mm (1.1 in)	35 of 100 (Notable)
Calera	Mexico	Record high maximum temperature	41.7 C (107.1 F)	35 of 100 (Notable)
Misantla	Mexico	Record low maximum temperature	23.9 C (75.0 F)	35 of 100 (Notable)
Hat Creek	United States	Record high maximum temperature	37.2 C (99.0 F)	35 of 100 (Notable)
Cascade 5 S	United States	Record high minimum temperature	14.4 C (57.9 F)	35 of 100 (Notable)
Villaldama	Mexico	Record low minimum temperature	13.9 C (57.0 F)	34 of 100 (Routine)
Anacortes	United States	Record high maximum temperature	30.0 C (86.0 F)	34 of 100 (Routine)
Renningen-Ihinger Hof	Germany	Record daily precipitation	35.9 mm (1.4 in)	33 of 100 (Routine)
Las Pocitas	Mexico	Record low maximum temperature	16.7 C (62.1 F)	33 of 100 (Routine)
Chiconautla	Mexico	Record high minimum temperature	16.7 C (62.1 F)	33 of 100 (Routine)
Zapote	Mexico	Record daily precipitation	85.6 mm (3.4 in)	33 of 100 (Routine)
Colfax	United States	Record high maximum temperature	33.9 C (93.0 F)	33 of 100 (Routine)
Odessa	United States	Record high minimum temperature	15.0 C (59.0 F)	33 of 100 (Routine)
Temascal	Mexico	Record daily precipitation	131.3 mm (5.2 in)	32 of 100 (Routine)
Nevada City	United States	Record high maximum temperature	33.3 C (91.9 F)	32 of 100 (Routine)

Counts by Type and Timescale

999 records

Records set or tied on 18 May 2008 by type: Highest daily maximum 385, Lowest daily maximum 150, Highest daily minimum 260, Lowest daily minimum 89, Heaviest daily rainfall 111, Heaviest daily snowfall 1, Deepest snow cover 3.

Records on 18 May 2008 by type
Record type	Records
Highest daily maximum	385
Lowest daily maximum	150
Highest daily minimum	260
Lowest daily minimum	89
Heaviest daily rainfall	111
Heaviest daily snowfall	1
Deepest snow cover	3

Records on 18 May 2008 by timescale: all-time 1, monthly 45, daily 953.

How Much Records Were Beaten By

737 broken records

Margins by which the 737 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 483.0. Ties are not counted.

Top 20 by Significance

18 May 2008

Top 20 records on 18 May 2008 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 May 2008	Jesus Carranza, MX	monthly rain	154.9 mm (6.1 in)	53.0 mm (2.1 in)	45 years	57 of 100 (Notable)
18 May 2008	Hebron, US	daily snow depth	48.3 cm (19.0 in)	48.3 cm (19.0 in)	44 years	57 of 100 (Notable)
18 May 2008	San Nicolas Is, US	daily high min	18.9 C (66.0 F)	5.0 C (9.0 F)	68 years	55 of 100 (Notable)
18 May 2008	Eichstatt-Landershofen, DE	daily rain	29.6 mm (1.2 in)	17.8 mm (0.7 in)	52 years	53 of 100 (Notable)
18 May 2008	Avila, ES	daily rain	27.1 mm (1.1 in)	23.0 mm (0.9 in)	31 years	52 of 100 (Notable)
18 May 2008	Pomona/Fairplex, US	monthly high min	19.4 C (66.9 F)	0.5 C (0.9 F)	113 years	51 of 100 (Notable)
18 May 2008	Virginia City, US	monthly high min	19.4 C (66.9 F)	0.5 C (0.9 F)	118 years	51 of 100 (Notable)
18 May 2008	Everett, US	monthly high max	33.9 C (93.0 F)	2.8 C (5.0 F)	82 years	51 of 100 (Notable)
18 May 2008	Great Falls 16St, US	daily high min	15.6 C (60.1 F)	3.4 C (6.1 F)	109 years	48 of 100 (Notable)
18 May 2008	Ventnor (Oaklands), AU	daily rain	30.0 mm (1.2 in)	15.0 mm (0.6 in)	40 years	45 of 100 (Notable)
18 May 2008	Colville, US	daily high min	12.8 C (55.0 F)	2.8 C (5.0 F)	93 years	44 of 100 (Notable)
18 May 2008	Bend, US	daily high min	14.4 C (57.9 F)	3.3 C (5.9 F)	86 years	43 of 100 (Notable)
18 May 2008	Lilydale, AU	daily rain	34.0 mm (1.3 in)	1.5 mm (0.06 in)	108 years	42 of 100 (Notable)
18 May 2008	Azueta, MX	daily rain	79.0 mm (3.1 in)	38.9 mm (1.5 in)	52 years	42 of 100 (Notable)
18 May 2008	Pomona/Fairplex, US	daily high max	38.9 C (102.0 F)	2.8 C (5.0 F)	88 years	41 of 100 (Notable)
18 May 2008	St George, US	daily high max	37.2 C (99.0 F)	0.5 C (0.9 F)	113 years	41 of 100 (Notable)
18 May 2008	Lewistown AP, US	daily high min	11.1 C (52.0 F)	0.5 C (0.9 F)	104 years	41 of 100 (Notable)
18 May 2008	Puerto Montt, CL	daily rain	68.3 mm (2.7 in)	35.3 mm (1.4 in)	30 years	40 of 100 (Notable)
18 May 2008	Ixcamilpa (Cfe), MX	monthly low max	25.0 C (77.0 F)	2.8 C (5.0 F)	46 years	40 of 100 (Notable)
18 May 2008	Ojai, US	daily high max	39.4 C (102.9 F)	2.2 C (4.0 F)	88 years	40 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 2008

Records set or tied on this calendar date in each year from 1796 to 2008. 2008 had 999 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 2008-05-18: 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	736
100 to 200	0
200 to 300	0
300 to 400	0
400 to 500	1