Weather Records on 20 May 1989

764 weather records were set or tied worldwide on 20 May 1989. Highest significance: Savannah 6 SW, US.

Key Facts for 20 May 1989

On 20 May 1989, 764 weather records were set or tied at long-record stations worldwide.
481 were record highs and 120 were record lows, counting maximum and minimum temperature.
By timescale, 10 were all-time records, 18 monthly and 736 daily.
Savannah 6 SW set a daily record precipitation of 134.6 mm (5.3 in) on 20 May 1989.
Across 162 earlier years (1802 to 2026) the same calendar date averaged 454 records.

Record Map

764 stations

764 station records on 20 May 1989 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 May 1989: highest significance records shown on the map
Station	Country	Type	Value	Significance
Savannah 6 SW	United States	Record daily precipitation	134.6 mm (5.3 in)	75 of 100 (Major)
Yaremcha	Ukraine	Record daily precipitation	52.3 mm (2.1 in)	51 of 100 (Notable)
Strathdarr	Australia	Record daily precipitation	62.5 mm (2.5 in)	50 of 100 (Notable)
Aranyaprathet	Thailand	Record daily precipitation	87.1 mm (3.4 in)	49 of 100 (Notable)
Piacabucu	Brazil	Record daily precipitation	87.0 mm (3.4 in)	45 of 100 (Notable)
Anaconda	United States	Record low minimum temperature	-6.7 C (19.9 F)	45 of 100 (Notable)
Teigarhorn	Iceland	Record daily precipitation	35.0 mm (1.4 in)	44 of 100 (Notable)
Newton 6 SSE	United States	Record daily precipitation	46.5 mm (1.8 in)	44 of 100 (Notable)
Hanover	United States	Record high maximum temperature	35.6 C (96.1 F)	43 of 100 (Notable)
Nizhnyj Tagil	Russia	Record daily precipitation	25.0 mm (1.0 in)	41 of 100 (Notable)
Amor Downs	Australia	Record daily precipitation	112.3 mm (4.4 in)	39 of 100 (Notable)
Monticello	United States	Record daily precipitation	63.0 mm (2.5 in)	39 of 100 (Notable)
Natchez	United States	Record high minimum temperature	23.3 C (73.9 F)	39 of 100 (Notable)
Mt Wx	United States	Record high maximum temperature	33.9 C (93.0 F)	39 of 100 (Notable)
Dover 1 W	United States	Record daily precipitation	62.5 mm (2.5 in)	38 of 100 (Notable)
Lebanon	United States	Record daily precipitation	43.2 mm (1.7 in)	38 of 100 (Notable)
Marlin	United States	Record high minimum temperature	23.3 C (73.9 F)	38 of 100 (Notable)
Centennial 1NE	United States	Record low minimum temperature	-6.7 C (19.9 F)	38 of 100 (Notable)
Headworks Portland Wtr B	United States	Record low minimum temperature	1.7 C (35.1 F)	37 of 100 (Notable)
Presa Guaracha	Mexico	Record high maximum temperature	39.4 C (102.9 F)	36 of 100 (Notable)
Valley	United Kingdom	Record high maximum temperature	26.8 C (80.2 F)	36 of 100 (Notable)
Creel (Cfe)	Mexico	Record high maximum temperature	35.0 C (95.0 F)	35 of 100 (Notable)
Udskoe	Russia	Record daily precipitation	29.7 mm (1.2 in)	35 of 100 (Notable)
Washington 1 W	United States	Record daily precipitation	52.3 mm (2.1 in)	35 of 100 (Notable)
Hawi 168	United States	Record daily precipitation	29.2 mm (1.1 in)	35 of 100 (Notable)
Zanesville Muni AP	United States	Record daily precipitation	43.7 mm (1.7 in)	35 of 100 (Notable)
Effingham 3SW	United States	Record daily precipitation	43.9 mm (1.7 in)	34 of 100 (Routine)
Wheaton 3 SE	United States	Record daily precipitation	35.1 mm (1.4 in)	34 of 100 (Routine)
Newburgh L&D	United States	Record daily precipitation	69.9 mm (2.8 in)	34 of 100 (Routine)
San Simon	United States	Record high maximum temperature	35.6 C (96.1 F)	33 of 100 (Routine)
Denton 2 SE	United States	Record high minimum temperature	23.3 C (73.9 F)	33 of 100 (Routine)
Den Helder-1	Netherlands	Record high minimum temperature	14.3 C (57.7 F)	32 of 100 (Routine)
Dannemora	United States	Record high minimum temperature	17.2 C (63.0 F)	32 of 100 (Routine)
Pilot Rock 1 SE	United States	Record low minimum temperature	-0.6 C (30.9 F)	32 of 100 (Routine)
Goliad	United States	Record high maximum temperature	37.8 C (100.0 F)	32 of 100 (Routine)
Inhambupe	Brazil	Record daily precipitation	39.4 mm (1.6 in)	31 of 100 (Routine)
Nicosia	Cyprus	Record high maximum temperature	37.3 C (99.1 F)	31 of 100 (Routine)
Orly	France	Record high maximum temperature	28.9 C (84.0 F)	31 of 100 (Routine)
Pomeroy	United States	Record low minimum temperature	-3.3 C (26.1 F)	31 of 100 (Routine)
Lucin	United States	Record low minimum temperature	-1.7 C (28.9 F)	31 of 100 (Routine)
Santander Centro	Spain	Record high maximum temperature	26.8 C (80.2 F)	30 of 100 (Routine)
Glenns Ferry	United States	Record low minimum temperature	-1.1 C (30.0 F)	30 of 100 (Routine)
Crane Nsa	United States	Record daily precipitation	41.7 mm (1.6 in)	30 of 100 (Routine)
Owensboro Trtmt Plt E	United States	Record daily precipitation	50.8 mm (2.0 in)	30 of 100 (Routine)
Carrizozo 1SW	United States	Record high maximum temperature	35.6 C (96.1 F)	30 of 100 (Routine)
Durant	United States	Record high minimum temperature	21.7 C (71.1 F)	30 of 100 (Routine)
Kingston Springs	United States	Record daily precipitation	55.9 mm (2.2 in)	30 of 100 (Routine)
Nairibin	Australia	Record daily precipitation	31.0 mm (1.2 in)	29 of 100 (Routine)
Santa Rosa de Lima (Camboata)	Brazil	Record daily precipitation	37.5 mm (1.5 in)	29 of 100 (Routine)
Sandakan	Malaysia	Record low maximum temperature	28.1 C (82.6 F)	29 of 100 (Routine)
Eastbourne	United Kingdom	Record high maximum temperature	23.6 C (74.5 F)	29 of 100 (Routine)
Springerville	United States	Record high maximum temperature	28.9 C (84.0 F)	29 of 100 (Routine)
Elkton	United States	Record daily precipitation	40.9 mm (1.6 in)	29 of 100 (Routine)
Woodbury 1 WNW	United States	Record daily precipitation	57.2 mm (2.3 in)	29 of 100 (Routine)
Mascota (Smn)	Mexico	Record low minimum temperature	7.2 C (45.0 F)	28 of 100 (Routine)
Villa Obregon	Mexico	Record high minimum temperature	18.9 C (66.0 F)	28 of 100 (Routine)
Haugan 1 W	United States	Record low minimum temperature	-5.6 C (21.9 F)	28 of 100 (Routine)
Haskell	United States	Record daily precipitation	100.8 mm (4.0 in)	28 of 100 (Routine)
Cove 1 E	United States	Record low minimum temperature	-1.1 C (30.0 F)	28 of 100 (Routine)
Lawrenceburg Filt Plt	United States	Record daily precipitation	70.9 mm (2.8 in)	28 of 100 (Routine)

Counts by Type and Timescale

764 records

Records set or tied on 20 May 1989 by type: Highest daily maximum 229, Lowest daily maximum 15, Highest daily minimum 252, Lowest daily minimum 105, Heaviest daily rainfall 162, Deepest snow cover 1.

Records on 20 May 1989 by type
Record type	Records
Highest daily maximum	229
Lowest daily maximum	15
Highest daily minimum	252
Lowest daily minimum	105
Heaviest daily rainfall	162
Heaviest daily snowfall	0
Deepest snow cover	1

Records on 20 May 1989 by timescale: all-time 10, monthly 18, daily 736.

How Much Records Were Beaten By

554 broken records

Margins by which the 554 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 170.0. Ties are not counted.

Top 20 by Significance

20 May 1989

Top 20 records on 20 May 1989 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 May 1989	Savannah 6 SW, US	daily rain	134.6 mm (5.3 in)	67.3 mm (2.6 in)	86 years	75 of 100 (Major)
20 May 1989	Yaremcha, UA	daily rain	52.3 mm (2.1 in)	31.5 mm (1.2 in)	36 years	51 of 100 (Notable)
20 May 1989	Strathdarr, AU	daily rain	62.5 mm (2.5 in)	49.0 mm (1.9 in)	26 years	50 of 100 (Notable)
20 May 1989	Aranyaprathet, TH	daily rain	87.1 mm (3.4 in)	60.8 mm (2.4 in)	23 years	49 of 100 (Notable)
20 May 1989	Piacabucu, BR	daily rain	87.0 mm (3.4 in)	45.0 mm (1.8 in)	40 years	45 of 100 (Notable)
20 May 1989	Anaconda, US	daily low min	-6.7 C (19.9 F)	3.9 C (7.0 F)	88 years	45 of 100 (Notable)
20 May 1989	Teigarhorn, IS	daily rain	35.0 mm (1.4 in)	28.2 mm (1.1 in)	24 years	44 of 100 (Notable)
20 May 1989	Newton 6 SSE, US	daily rain	46.5 mm (1.8 in)	18.1 mm (0.7 in)	74 years	44 of 100 (Notable)
20 May 1989	Hanover, US	monthly high max	35.6 C (96.1 F)	0.6 C (1.1 F)	77 years	43 of 100 (Notable)
20 May 1989	Nizhnyj Tagil, RU	daily rain	25.0 mm (1.0 in)	12.0 mm (0.5 in)	28 years	41 of 100 (Notable)
20 May 1989	Amor Downs, AU	monthly rain	112.3 mm (4.4 in)	40.1 mm (1.6 in)	6 years	39 of 100 (Notable)
20 May 1989	Monticello, US	daily rain	63.0 mm (2.5 in)	21.6 mm (0.9 in)	40 years	39 of 100 (Notable)
20 May 1989	Natchez, US	daily high min	23.3 C (73.9 F)	1.1 C (2.0 F)	92 years	39 of 100 (Notable)
20 May 1989	Mt Wx, US	monthly high max	33.9 C (93.0 F)	1.7 C (3.1 F)	63 years	39 of 100 (Notable)
20 May 1989	Dover 1 W, US	daily rain	62.5 mm (2.5 in)	19.1 mm (0.8 in)	51 years	38 of 100 (Notable)
20 May 1989	Lebanon, US	daily rain	43.2 mm (1.7 in)	20.3 mm (0.8 in)	56 years	38 of 100 (Notable)
20 May 1989	Marlin, US	daily high min	23.3 C (73.9 F)	2.2 C (4.0 F)	84 years	38 of 100 (Notable)
20 May 1989	Centennial 1NE, US	daily low min	-6.7 C (19.9 F)	1.1 C (2.0 F)	87 years	38 of 100 (Notable)
20 May 1989	Headworks Portland Wtr B, US	daily low min	1.7 C (35.1 F)	1.1 C (2.0 F)	80 years	37 of 100 (Notable)
20 May 1989	Presa Guaracha, MX	all-time high max	39.4 C (102.9 F)	0.5 C (0.9 F)	37 years	36 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 1989

Records set or tied on this calendar date in each year from 1802 to 1989. 1989 had 764 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 1989-05-20: 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 2026-10-18. Last revised 18 October 2026 (2026-10-18).

Margin	Records
0 to 25	538
25 to 50	13
50 to 75	2
75 to 100	0
100 to 125	0
125 to 150	0
150 to 175	1