Weather Records on 20 May 1993

1,208 weather records were set or tied worldwide on 20 May 1993. Highest significance: Miahuatlan (Smn), MX.

Key Facts for 20 May 1993

On 20 May 1993, 1,208 weather records were set or tied at long-record stations worldwide.
630 were record highs and 397 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 28 monthly and 1,178 daily.
Miahuatlan (Smn) set an all-time record high minimum temperature of 26.7 C (80.1 F) on 20 May 1993.
Across 162 earlier years (1802 to 2026) the same calendar date averaged 451 records.

Record Map

1,208 stations

1,208 station records on 20 May 1993 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 May 1993: highest significance records shown on the map
Station	Country	Type	Value	Significance
Miahuatlan (Smn)	Mexico	Record high minimum temperature	26.7 C (80.1 F)	61 of 100 (Major)
Lennestadt-Theten	Germany	Record daily precipitation	31.4 mm (1.2 in)	56 of 100 (Notable)
Zeerijp	Netherlands	Record daily precipitation	34.5 mm (1.4 in)	55 of 100 (Notable)
Uithuizen	Netherlands	Record daily precipitation	27.4 mm (1.1 in)	55 of 100 (Notable)
Schiermonnikoog	Netherlands	Record daily precipitation	32.1 mm (1.3 in)	53 of 100 (Notable)
Delfzijl	Netherlands	Record daily precipitation	28.5 mm (1.1 in)	51 of 100 (Notable)
Zweelo	Netherlands	Record daily precipitation	28.4 mm (1.1 in)	51 of 100 (Notable)
Romanovka	Russia	Record daily precipitation	26.9 mm (1.1 in)	51 of 100 (Notable)
Kisinev	Moldova	Record daily precipitation	37.8 mm (1.5 in)	50 of 100 (Notable)
Lozova	Ukraine	Record daily precipitation	25.9 mm (1.0 in)	50 of 100 (Notable)
Giessen/Wettenberg	Germany	Record daily precipitation	26.4 mm (1.0 in)	49 of 100 (Notable)
Winschoten	Netherlands	Record daily precipitation	29.0 mm (1.1 in)	49 of 100 (Notable)
Roden	Netherlands	Record daily precipitation	31.7 mm (1.2 in)	48 of 100 (Notable)
Geroda-Platz	Germany	Record daily precipitation	33.0 mm (1.3 in)	47 of 100 (Notable)
Koebenhavn: Landbohojskolen-1	Denmark	Record high maximum temperature	27.4 C (81.3 F)	44 of 100 (Notable)
Faverges-de-la-Tour	France	Record daily precipitation	67.3 mm (2.6 in)	44 of 100 (Notable)
Bokovskaja	Russia	Record daily precipitation	27.2 mm (1.1 in)	43 of 100 (Notable)
Finsterwolde	Netherlands	Record daily precipitation	37.0 mm (1.5 in)	42 of 100 (Notable)
Mayaguez City	Puerto Rico [United States]	Record high minimum temperature	23.9 C (75.0 F)	42 of 100 (Notable)
Fall Rvr Lake	United States	Record low maximum temperature	12.8 C (55.0 F)	42 of 100 (Notable)
Gutersloh	Germany	Record daily precipitation	30.8 mm (1.2 in)	41 of 100 (Notable)
Visby_Flygplats	Sweden	Record high maximum temperature	25.7 C (78.3 F)	41 of 100 (Notable)
Halmstad	Sweden	Record high minimum temperature	13.1 C (55.6 F)	41 of 100 (Notable)
Circleville	United States	Record low maximum temperature	15.0 C (59.0 F)	41 of 100 (Notable)
Oestersund-Froesoen	Sweden	Record high maximum temperature	23.1 C (73.6 F)	40 of 100 (Notable)
Uppsala_Aut	Sweden	Record high maximum temperature	26.5 C (79.7 F)	40 of 100 (Notable)
Corinth 5 WSW	United States	Record low maximum temperature	19.4 C (66.9 F)	40 of 100 (Notable)
Potsdam	Germany	Record high minimum temperature	15.3 C (59.5 F)	39 of 100 (Notable)
Niekerk	Netherlands	Record daily precipitation	26.9 mm (1.1 in)	39 of 100 (Notable)
Sedalia Wtp	United States	Record low maximum temperature	16.1 C (61.0 F)	39 of 100 (Notable)
Gilroy	United States	Record high minimum temperature	15.6 C (60.1 F)	38 of 100 (Notable)
Mozdok	Russia	Record daily precipitation	33.4 mm (1.3 in)	37 of 100 (Notable)
Pocahontas 1	United States	Record low maximum temperature	18.9 C (66.0 F)	37 of 100 (Notable)
Appleton City	United States	Record low maximum temperature	12.8 C (55.0 F)	37 of 100 (Notable)
Lockwood	United States	Record low maximum temperature	16.1 C (61.0 F)	36 of 100 (Notable)
Nevada Wtp	United States	Record low maximum temperature	13.3 C (55.9 F)	36 of 100 (Notable)
Hamilton	United States	Record high minimum temperature	11.7 C (53.1 F)	36 of 100 (Notable)
Embrun	France	Record daily precipitation	31.0 mm (1.2 in)	35 of 100 (Notable)
Kokomo 3 WSW	United States	Record low minimum temperature	0.6 C (33.1 F)	35 of 100 (Notable)
Ft Scott	United States	Record low maximum temperature	12.8 C (55.0 F)	35 of 100 (Notable)
Oksoey Fyr	Norway	Record high minimum temperature	13.8 C (56.8 F)	34 of 100 (Routine)
Santa Cruz	United States	Record high minimum temperature	15.0 C (59.0 F)	34 of 100 (Routine)
Santa Paula	United States	Record high minimum temperature	16.1 C (61.0 F)	34 of 100 (Routine)
Mtn Grove 2 N	United States	Record low maximum temperature	15.6 C (60.1 F)	34 of 100 (Routine)
Mikkalo 6 W	United States	Record high minimum temperature	21.7 C (71.1 F)	34 of 100 (Routine)
Freudenstadt	Germany	Record daily precipitation	46.0 mm (1.8 in)	33 of 100 (Routine)
Arecibo 3 ESE	Puerto Rico [United States]	Record high minimum temperature	25.0 C (77.0 F)	33 of 100 (Routine)
Semjachik	Russia	Record high maximum temperature	18.5 C (65.3 F)	33 of 100 (Routine)
Guntersville	United States	Record low maximum temperature	21.1 C (70.0 F)	33 of 100 (Routine)
Eskridge	United States	Record low maximum temperature	12.2 C (54.0 F)	33 of 100 (Routine)
Bengbu	China	Record daily precipitation	35.7 mm (1.4 in)	32 of 100 (Routine)
Colonia Alvaro Obregon	Mexico	Record low minimum temperature	5.6 C (42.1 F)	32 of 100 (Routine)
Mammoth Spring	United States	Record low maximum temperature	18.9 C (66.0 F)	32 of 100 (Routine)
Ukiah	United States	Record high minimum temperature	13.9 C (57.0 F)	32 of 100 (Routine)
Watsonville Wtr Wks	United States	Record high minimum temperature	14.4 C (57.9 F)	32 of 100 (Routine)
Grangeville	United States	Record high minimum temperature	11.1 C (52.0 F)	32 of 100 (Routine)
Palestine	United States	Record low maximum temperature	12.8 C (55.0 F)	32 of 100 (Routine)
Union	United States	Record high minimum temperature	12.2 C (54.0 F)	32 of 100 (Routine)
Bernburg/Saale (Nord)	Germany	Record high maximum temperature	29.8 C (85.6 F)	31 of 100 (Routine)
Quincy	United States	Record high minimum temperature	12.8 C (55.0 F)	31 of 100 (Routine)

Counts by Type and Timescale

1,208 records

Records set or tied on 20 May 1993 by type: Highest daily maximum 323, Lowest daily maximum 231, Highest daily minimum 307, Lowest daily minimum 166, Heaviest daily rainfall 180, Heaviest daily snowfall 1.

Records on 20 May 1993 by type
Record type	Records
Highest daily maximum	323
Lowest daily maximum	231
Highest daily minimum	307
Lowest daily minimum	166
Heaviest daily rainfall	180
Heaviest daily snowfall	1
Deepest snow cover	0

Records on 20 May 1993 by timescale: all-time 2, monthly 28, daily 1,178.

How Much Records Were Beaten By

932 broken records

Margins by which the 932 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 39.3. Ties are not counted.

Top 20 by Significance

20 May 1993

Top 20 records on 20 May 1993 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 May 1993	Miahuatlan (Smn), MX	all-time high min	26.7 C (80.1 F)	5.0 C (9.0 F)	39 years	61 of 100 (Major)
20 May 1993	Lennestadt-Theten, DE	daily rain	31.4 mm (1.2 in)	18.0 mm (0.7 in)	55 years	56 of 100 (Notable)
20 May 1993	Zeerijp, NL	daily rain	34.5 mm (1.4 in)	19.7 mm (0.8 in)	39 years	55 of 100 (Notable)
20 May 1993	Uithuizen, NL	daily rain	27.4 mm (1.1 in)	17.9 mm (0.7 in)	39 years	55 of 100 (Notable)
20 May 1993	Schiermonnikoog, NL	daily rain	32.1 mm (1.3 in)	24.5 mm (1.0 in)	32 years	53 of 100 (Notable)
20 May 1993	Delfzijl, NL	daily rain	28.5 mm (1.1 in)	16.6 mm (0.7 in)	39 years	51 of 100 (Notable)
20 May 1993	Zweelo, NL	daily rain	28.4 mm (1.1 in)	17.2 mm (0.7 in)	32 years	51 of 100 (Notable)
20 May 1993	Romanovka, RU	daily rain	26.9 mm (1.1 in)	20.7 mm (0.8 in)	22 years	51 of 100 (Notable)
20 May 1993	Kisinev, MD	daily rain	37.8 mm (1.5 in)	18.0 mm (0.7 in)	47 years	50 of 100 (Notable)
20 May 1993	Lozova, UA	daily rain	25.9 mm (1.0 in)	20.7 mm (0.8 in)	52 years	50 of 100 (Notable)
20 May 1993	Giessen/Wettenberg, DE	daily rain	26.4 mm (1.0 in)	16.7 mm (0.7 in)	51 years	49 of 100 (Notable)
20 May 1993	Winschoten, NL	daily rain	29.0 mm (1.1 in)	16.0 mm (0.6 in)	39 years	49 of 100 (Notable)
20 May 1993	Roden, NL	daily rain	31.7 mm (1.2 in)	22.0 mm (0.9 in)	14 years	48 of 100 (Notable)
20 May 1993	Geroda-Platz, DE	daily rain	33.0 mm (1.3 in)	26.2 mm (1.0 in)	11 years	47 of 100 (Notable)
20 May 1993	Koebenhavn: Landbohojskolen-1, DK	daily high max	27.4 C (81.3 F)	2.0 C (3.6 F)	106 years	44 of 100 (Notable)
20 May 1993	Faverges-de-la-Tour, FR	daily rain	67.3 mm (2.6 in)	39.3 mm (1.5 in)	3 years	44 of 100 (Notable)
20 May 1993	Bokovskaja, RU	daily rain	27.2 mm (1.1 in)	17.5 mm (0.7 in)	28 years	43 of 100 (Notable)
20 May 1993	Finsterwolde, NL	monthly rain	37.0 mm (1.5 in)	8.2 mm (0.32 in)	34 years	42 of 100 (Notable)
20 May 1993	Mayaguez City, PR	daily high min	23.9 C (75.0 F)	1.1 C (2.0 F)	92 years	42 of 100 (Notable)
20 May 1993	Fall Rvr Lake, US	daily low max	12.8 C (55.0 F)	5.0 C (9.0 F)	78 years	42 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 1,208 records.

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

Records on 05-20 in each year
Year	Records
1802	1
1803	1
1804	1
1815	1
1825	1
1837	1
1844	1
1845	3
1847	1
1854	1
1858	3
1861	1
1862	1
1865	1
1867	1
1868	2
1870	3
1871	2
1876	2
1877	3
1879	1
1880	2
1884	2
1885	1
1887	2
1889	3
1890	3
1891	5
1892	3
1893	1
1894	6
1895	3
1896	3
1897	3
1898	4
1899	4
1900	1
1901	5
1902	11
1903	19
1904	4
1905	4
1906	22
1907	35
1908	23
1909	10
1910	20
1911	82
1912	20
1913	10
1914	16
1915	42
1916	29
1917	46
1918	92
1919	56
1920	44
1921	234
1922	40
1923	125
1924	189
1925	251
1926	128
1927	118
1928	138
1929	323
1930	129
1931	451
1932	689
1933	449
1934	582
1935	259
1936	207
1937	270
1938	331
1939	266
1940	337
1941	378
1942	337
1943	802
1944	315
1945	498
1946	339
1947	358
1948	514
1949	586
1950	327
1951	288
1952	615
1953	518
1954	822
1955	421
1956	565
1957	728
1958	378
1959	785
1960	612
1961	333
1962	773
1963	732
1964	517
1965	200
1966	416
1967	587
1968	743
1969	885
1970	310
1971	653
1972	612
1973	419
1974	893
1975	1,332
1976	837
1977	553
1978	534
1979	683
1980	751
1981	1,540
1982	554
1983	1,307
1984	867
1985	426
1986	790
1987	1,036
1988	805
1989	764
1990	722
1991	925
1992	1,200
1993	1,208
1994	778
1995	734
1996	1,749
1997	1,106
1998	1,124
1999	673
2000	991
2001	847
2002	2,299
2003	1,201
2004	746
2005	929
2006	1,006
2007	565
2008	999
2009	1,529
2010	1,011
2011	1,117
2012	604
2013	919
2014	629
2015	1,001
2016	692
2017	1,214
2018	460
2019	1,483
2020	784
2021	904
2022	1,643
2023	1,106
2024	478
2025	969
2026	696

Download the Data

Data for records on 1993-05-20: 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 5	835
5 to 10	53
10 to 15	10
15 to 20	22
20 to 25	5
25 to 30	3
30 to 35	2
35 to 40	2