Weather Records on 17 May 1993

495 weather records were set or tied worldwide on 17 May 1993. Highest significance: Colorado Nm, US.

Key Facts for 17 May 1993

On 17 May 1993, 495 weather records were set or tied at long-record stations worldwide.
254 were record highs and 125 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 20 monthly and 474 daily.
Colorado Nm set a monthly record daily precipitation of 48.3 mm (1.9 in) on 17 May 1993.
Across 167 earlier years (1802 to 2026) the same calendar date averaged 434 records.

Record Map

495 stations

495 station records on 17 May 1993 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 May 1993: highest significance records shown on the map
Station	Country	Type	Value	Significance
Colorado Nm	United States	Record daily precipitation	48.3 mm (1.9 in)	61 of 100 (Major)
Valentia Observatory	Ireland	Record daily precipitation	36.9 mm (1.5 in)	53 of 100 (Notable)
Alton	United States	Record daily precipitation	29.5 mm (1.2 in)	53 of 100 (Notable)
Dalatangi	Iceland	Record daily precipitation	54.7 mm (2.2 in)	52 of 100 (Notable)
Kumeny	Russia	Record daily precipitation	28.8 mm (1.1 in)	48 of 100 (Notable)
Atoyac	Mexico	Record low maximum temperature	23.9 C (75.0 F)	45 of 100 (Notable)
Bragin	Belarus	Record daily precipitation	28.0 mm (1.1 in)	44 of 100 (Notable)
Arecibo 3 ESE	Puerto Rico [United States]	Record high minimum temperature	25.6 C (78.1 F)	44 of 100 (Notable)
Pomeroy	United States	Record high minimum temperature	18.3 C (64.9 F)	40 of 100 (Notable)
Syktyvkar	Russia	Record high minimum temperature	13.7 C (56.7 F)	39 of 100 (Notable)
Prado	Brazil	Record daily precipitation	42.0 mm (1.7 in)	38 of 100 (Notable)
University Exp STN	United States	Record high maximum temperature	27.2 C (81.0 F)	38 of 100 (Notable)
Nelson Bay (Nelson Head)	Australia	Record daily precipitation	45.8 mm (1.8 in)	37 of 100 (Notable)
Skegness	United Kingdom	Record high minimum temperature	12.4 C (54.3 F)	37 of 100 (Notable)
Cacaloapan	Mexico	Record low minimum temperature	5.6 C (42.1 F)	36 of 100 (Notable)
Mc Minnville	United States	Record high minimum temperature	11.7 C (53.1 F)	36 of 100 (Notable)
Lakehurst AP	United States	Record daily precipitation	58.2 mm (2.3 in)	36 of 100 (Notable)
Gulkana AP	United States	Record high maximum temperature	25.6 C (78.1 F)	36 of 100 (Notable)
Caete	Brazil	Record daily precipitation	170.2 mm (6.7 in)	35 of 100 (Notable)
Ardtalnaig	United Kingdom	Record daily precipitation	33.0 mm (1.3 in)	35 of 100 (Notable)
Dillon 1 E	United States	Record high minimum temperature	3.3 C (37.9 F)	35 of 100 (Notable)
Westcliffe	United States	Record daily precipitation	28.4 mm (1.1 in)	35 of 100 (Notable)
Nenana Muni AP	United States	Record high maximum temperature	26.7 C (80.1 F)	35 of 100 (Notable)
Kazan	Russia	Record high minimum temperature	16.5 C (61.7 F)	34 of 100 (Routine)
Big Delta AP	United States	Record high maximum temperature	27.2 C (81.0 F)	34 of 100 (Routine)
Nenana Muni AP	United States	Record high minimum temperature	10.0 C (50.0 F)	34 of 100 (Routine)
Medio Monte	Mexico	Record high maximum temperature	36.7 C (98.1 F)	33 of 100 (Routine)
Dores Do Rio Preto	Brazil	Record daily precipitation	29.4 mm (1.2 in)	32 of 100 (Routine)
Merida Centro	Mexico	Record low minimum temperature	12.8 C (55.0 F)	32 of 100 (Routine)
Armavir	Russia	Record daily precipitation	43.2 mm (1.7 in)	32 of 100 (Routine)
Braemar	United Kingdom	Record daily precipitation	34.2 mm (1.3 in)	32 of 100 (Routine)
Balmoral	United Kingdom	Record daily precipitation	27.3 mm (1.1 in)	32 of 100 (Routine)
Louisa	United States	Record daily precipitation	30.0 mm (1.2 in)	32 of 100 (Routine)
Pte de la Hague	France	Record high minimum temperature	14.2 C (57.6 F)	31 of 100 (Routine)
San Vicente	Mexico	Record high minimum temperature	18.9 C (66.0 F)	31 of 100 (Routine)
Concordia (Cfe)	Mexico	Record low maximum temperature	30.0 C (86.0 F)	31 of 100 (Routine)
Fairbanks Intl AP	United States	Record high minimum temperature	10.6 C (51.1 F)	31 of 100 (Routine)
Kit Carson	United States	Record low minimum temperature	-5.0 C (23.0 F)	30 of 100 (Routine)
Cambridge	United States	Record low minimum temperature	-2.2 C (28.0 F)	30 of 100 (Routine)
Gran Quivira Natl Mon	United States	Record high minimum temperature	21.7 C (71.1 F)	30 of 100 (Routine)
Canfield 1 S	United States	Record low minimum temperature	-2.8 C (27.0 F)	29 of 100 (Routine)
Ogden Sugar Factory	United States	Record high minimum temperature	16.7 C (62.1 F)	29 of 100 (Routine)
San Miguel Ejutla	Mexico	Record high maximum temperature	36.7 C (98.1 F)	28 of 100 (Routine)
Nis	Serbia	Record daily precipitation	41.5 mm (1.6 in)	28 of 100 (Routine)
Moscow	United States	Record daily precipitation	45.2 mm (1.8 in)	28 of 100 (Routine)
Pte de la Hague	France	Record high maximum temperature	21.2 C (70.2 F)	27 of 100 (Routine)
El Chiflon	Mexico	Record low minimum temperature	11.7 C (53.1 F)	27 of 100 (Routine)
Nampula	Mozambique	Record high maximum temperature	35.0 C (95.0 F)	27 of 100 (Routine)
Bastanka	Ukraine	Record daily precipitation	26.9 mm (1.1 in)	27 of 100 (Routine)
Kremmling	United States	Record high minimum temperature	7.2 C (45.0 F)	27 of 100 (Routine)
Eielson Fld	United States	Record high minimum temperature	12.8 C (55.0 F)	27 of 100 (Routine)
Wasilla 3 S	United States	Record high maximum temperature	25.0 C (77.0 F)	27 of 100 (Routine)
Joplin Rgnl AP	United States	Record daily precipitation	39.6 mm (1.6 in)	27 of 100 (Routine)
Tanana AP	United States	Record high minimum temperature	11.7 C (53.1 F)	27 of 100 (Routine)
Milpa Alta	Mexico	Record low maximum temperature	18.3 C (64.9 F)	26 of 100 (Routine)
Eklutna Project	United States	Record high maximum temperature	25.0 C (77.0 F)	26 of 100 (Routine)
Matanuska Exp Farm	United States	Record high maximum temperature	25.0 C (77.0 F)	26 of 100 (Routine)
Puntilla	United States	Record high maximum temperature	21.1 C (70.0 F)	26 of 100 (Routine)
Skwentna	United States	Record high maximum temperature	23.9 C (75.0 F)	26 of 100 (Routine)
El Carmen (Smn)	Mexico	Record high minimum temperature	27.8 C (82.0 F)	25 of 100 (Routine)

Counts by Type and Timescale

495 records

Records set or tied on 17 May 1993 by type: Highest daily maximum 95, Lowest daily maximum 45, Highest daily minimum 159, Lowest daily minimum 80, Heaviest daily rainfall 115, Deepest snow cover 1.

Records on 17 May 1993 by type
Record type	Records
Highest daily maximum	95
Lowest daily maximum	45
Highest daily minimum	159
Lowest daily minimum	80
Heaviest daily rainfall	115
Heaviest daily snowfall	0
Deepest snow cover	1

Records on 17 May 1993 by timescale: all-time 1, monthly 20, daily 474.

How Much Records Were Beaten By

367 broken records

Margins by which the 367 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 40.2. Ties are not counted.

Top 20 by Significance

17 May 1993

Top 20 records on 17 May 1993 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 May 1993	Colorado Nm, US	monthly rain	48.3 mm (1.9 in)	21.9 mm (0.9 in)	20 years	61 of 100 (Major)
17 May 1993	Valentia Observatory, IE	daily rain	36.9 mm (1.5 in)	26.7 mm (1.1 in)	28 years	53 of 100 (Notable)
17 May 1993	Alton, US	daily rain	29.5 mm (1.2 in)	14.5 mm (0.6 in)	72 years	53 of 100 (Notable)
17 May 1993	Dalatangi, IS	daily rain	54.7 mm (2.2 in)	40.2 mm (1.6 in)	27 years	52 of 100 (Notable)
17 May 1993	Kumeny, RU	daily rain	28.8 mm (1.1 in)	16.0 mm (0.6 in)	23 years	48 of 100 (Notable)
17 May 1993	Atoyac, MX	daily low max	23.9 C (75.0 F)	6.1 C (11.0 F)	44 years	45 of 100 (Notable)
17 May 1993	Bragin, BY	daily rain	28.0 mm (1.1 in)	17.3 mm (0.7 in)	35 years	44 of 100 (Notable)
17 May 1993	Arecibo 3 ESE, PR	daily high min	25.6 C (78.1 F)	3.4 C (6.1 F)	44 years	44 of 100 (Notable)
17 May 1993	Pomeroy, US	daily high min	18.3 C (64.9 F)	0.5 C (0.9 F)	97 years	40 of 100 (Notable)
17 May 1993	Syktyvkar, RU	daily high min	13.7 C (56.7 F)	0.6 C (1.1 F)	95 years	39 of 100 (Notable)
17 May 1993	Prado, BR	daily rain	42.0 mm (1.7 in)	32.2 mm (1.3 in)	36 years	38 of 100 (Notable)
17 May 1993	University Exp STN, US	daily high max	27.2 C (81.0 F)	2.8 C (5.0 F)	80 years	38 of 100 (Notable)
17 May 1993	Nelson Bay (Nelson Head), AU	daily rain	45.8 mm (1.8 in)	1.3 mm (0.05 in)	90 years	37 of 100 (Notable)
17 May 1993	Skegness, GB	daily high min	12.4 C (54.3 F)	0.7 C (1.3 F)	88 years	37 of 100 (Notable)
17 May 1993	Cacaloapan, MX	daily low min	5.6 C (42.1 F)	4.4 C (7.9 F)	39 years	36 of 100 (Notable)
17 May 1993	Mc Minnville, US	daily high min	11.7 C (53.1 F)	1.1 C (2.0 F)	78 years	36 of 100 (Notable)
17 May 1993	Lakehurst AP, US	daily rain	58.2 mm (2.3 in)	37.1 mm (1.5 in)	4 years	36 of 100 (Notable)
17 May 1993	Gulkana AP, US	daily high max	25.6 C (78.1 F)	2.3 C (4.1 F)	78 years	36 of 100 (Notable)
17 May 1993	Caete, BR	monthly rain	170.2 mm (6.7 in)	18.5 mm (0.7 in)	45 years	35 of 100 (Notable)
17 May 1993	Ardtalnaig, GB	daily rain	33.0 mm (1.3 in)	15.1 mm (0.6 in)	16 years	35 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

1802 to 1993

Records set or tied on this calendar date in each year from 1802 to 1993. 1993 had 495 records.

Counts for years before the ledger starts come from the same station rules.

Records on 05-17 in each year
Year	Records
1802	2
1803	1
1808	1
1816	1
1834	1
1837	1
1839	1
1847	2
1848	1
1851	1
1853	1
1855	1
1858	1
1859	1
1861	2
1862	2
1863	2
1864	1
1871	2
1872	2
1873	2
1874	4
1877	1
1878	1
1879	2
1880	1
1881	1
1882	2
1883	3
1885	1
1887	1
1888	2
1889	3
1891	8
1892	4
1893	3
1895	8
1896	2
1897	3
1898	6
1899	7
1900	12
1901	2
1902	3
1903	9
1904	12
1905	10
1906	22
1907	10
1908	5
1909	33
1910	16
1911	30
1912	16
1913	24
1914	24
1915	53
1916	49
1917	18
1918	56
1919	35
1920	46
1921	50
1922	30
1923	95
1924	80
1925	326
1926	133
1927	264
1928	127
1929	168
1930	421
1931	201
1932	288
1933	365
1934	373
1935	341
1936	270
1937	183
1938	340
1939	285
1940	338
1941	408
1942	589
1943	855
1944	521
1945	799
1946	586
1947	249
1948	412
1949	544
1950	371
1951	373
1952	777
1953	441
1954	298
1955	570
1956	1,166
1957	469
1958	331
1959	488
1960	402
1961	291
1962	1,325
1963	368
1964	417
1965	462
1966	489
1967	644
1968	564
1969	638
1970	711
1971	723
1972	610
1973	1,016
1974	1,302
1975	365
1976	426
1977	1,078
1978	872
1979	459
1980	768
1981	940
1982	476
1983	1,326
1984	925
1985	561
1986	921
1987	1,054
1988	1,096
1989	1,307
1990	1,135
1991	1,237
1992	1,025
1993	495
1994	858
1995	1,734
1996	1,706
1997	1,619
1998	1,080
1999	795
2000	825
2001	960
2002	964
2003	1,127
2004	769
2005	784
2006	1,522
2007	742
2008	1,309
2009	1,050
2010	880
2011	1,483
2012	711
2013	739
2014	1,062
2015	824
2016	741
2017	1,302
2018	726
2019	686
2020	496
2021	443
2022	479
2023	385
2024	566
2025	928
2026	745

Download the Data

Data for records on 1993-05-17: 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 10	342
10 to 20	19
20 to 30	3
30 to 40	2
40 to 50	1