Weather Records on 20 May 2001

847 weather records were set or tied worldwide on 20 May 2001. Highest significance: Miami, US.

Key Facts for 20 May 2001

On 20 May 2001, 847 weather records were set or tied at long-record stations worldwide.
436 were record highs and 134 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 20 monthly and 824 daily.
Miami set a daily record precipitation of 97.3 mm (3.8 in) on 20 May 2001.
Across 162 earlier years (1802 to 2026) the same calendar date averaged 453 records.

Record Map

847 stations

847 station records on 20 May 2001 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 May 2001: highest significance records shown on the map
Station	Country	Type	Value	Significance
Miami	United States	Record daily precipitation	97.3 mm (3.8 in)	77 of 100 (Major)
New Delhi/Safdarjun	India	Record daily precipitation	36.1 mm (1.4 in)	74 of 100 (Major)
Hacienda la Y	Mexico	Record daily precipitation	69.9 mm (2.8 in)	63 of 100 (Major)
Port Macquarie (Bellevue Garde	Australia	Record daily precipitation	90.8 mm (3.6 in)	58 of 100 (Notable)
Keflavik	Iceland	Record daily precipitation	77.5 mm (3.1 in)	55 of 100 (Notable)
Harlan	United States	Record daily precipitation	96.0 mm (3.8 in)	55 of 100 (Notable)
Kilauea 1134	United States	Record daily precipitation	116.8 mm (4.6 in)	54 of 100 (Notable)
Milford 4 NW	United States	Record daily precipitation	47.2 mm (1.9 in)	53 of 100 (Notable)
Sioux Rapids	United States	Record daily precipitation	58.2 mm (2.3 in)	53 of 100 (Notable)
Hardy	United States	Record daily precipitation	57.4 mm (2.3 in)	53 of 100 (Notable)
Snyder	United States	Record daily precipitation	58.4 mm (2.3 in)	51 of 100 (Notable)
Primghar	United States	Record daily precipitation	49.8 mm (2.0 in)	49 of 100 (Notable)
Chapman Hill	Australia	Record daily precipitation	79.2 mm (3.1 in)	48 of 100 (Notable)
Turlock #2	United States	Record high minimum temperature	20.0 C (68.0 F)	48 of 100 (Notable)
Zuara	Libya	Record high minimum temperature	28.0 C (82.4 F)	46 of 100 (Notable)
East Park Rsvr	United States	Record high minimum temperature	20.6 C (69.1 F)	46 of 100 (Notable)
Scott City	United States	Record daily precipitation	47.8 mm (1.9 in)	46 of 100 (Notable)
Stockton 1 E	United States	Record daily precipitation	38.9 mm (1.5 in)	46 of 100 (Notable)
Asuncion Nochixtlan	Mexico	Record high maximum temperature	40.0 C (104.0 F)	45 of 100 (Notable)
Eufaula Wildlife Ref	United States	Record daily precipitation	80.5 mm (3.2 in)	45 of 100 (Notable)
Davis 2 WSW Exp Farm	United States	Record high minimum temperature	26.1 C (79.0 F)	45 of 100 (Notable)
Erick	United States	Record daily precipitation	83.3 mm (3.3 in)	44 of 100 (Notable)
Anamosa 1 WNW	United States	Record daily precipitation	50.8 mm (2.0 in)	43 of 100 (Notable)
Pervomaisk	Ukraine	Record daily precipitation	30.0 mm (1.2 in)	42 of 100 (Notable)
Clarksville	United States	Record daily precipitation	58.4 mm (2.3 in)	42 of 100 (Notable)
Manuel Avila Camacho	Mexico	Record low maximum temperature	30.6 C (87.1 F)	41 of 100 (Notable)
Healy	United States	Record daily precipitation	36.8 mm (1.4 in)	41 of 100 (Notable)
Aurora	United States	Record daily precipitation	34.5 mm (1.4 in)	41 of 100 (Notable)
Sterling	United States	Record daily precipitation	68.1 mm (2.7 in)	41 of 100 (Notable)
Krambach (Bellevue)	Australia	Record daily precipitation	44.6 mm (1.8 in)	40 of 100 (Notable)
Imeny_T.G.Shevchenko	Ukraine	Record daily precipitation	31.0 mm (1.2 in)	40 of 100 (Notable)
Garden City Exp STN	United States	Record daily precipitation	49.8 mm (2.0 in)	39 of 100 (Notable)
Quemado	United States	Record high minimum temperature	12.8 C (55.0 F)	39 of 100 (Notable)
Marlinton	United States	Record daily precipitation	68.6 mm (2.7 in)	39 of 100 (Notable)
Krambach Post Office	Australia	Record daily precipitation	53.0 mm (2.1 in)	38 of 100 (Notable)
Bikaner	India	Record daily precipitation	41.9 mm (1.6 in)	38 of 100 (Notable)
Morgan 5 NW	United States	Record daily precipitation	69.3 mm (2.7 in)	38 of 100 (Notable)
Sevilla/San Pablo	Spain	Record daily precipitation	29.1 mm (1.1 in)	37 of 100 (Notable)
Merced	United States	Record high minimum temperature	18.3 C (64.9 F)	37 of 100 (Notable)
Buckeye	United States	Record daily precipitation	61.2 mm (2.4 in)	37 of 100 (Notable)
Saint Bernard	United States	Record high minimum temperature	22.2 C (72.0 F)	35 of 100 (Notable)
Apache	United States	Record daily precipitation	41.4 mm (1.6 in)	35 of 100 (Notable)
Bellbrook (East Street)	Australia	Record daily precipitation	25.8 mm (1.0 in)	34 of 100 (Routine)
Forster - Tuncurry R.V.C.P.	Australia	Record daily precipitation	50.0 mm (2.0 in)	34 of 100 (Routine)
Genoa	United States	Record daily snowfall	5.1 cm (2.0 in)	34 of 100 (Routine)
Haswell	United States	Record daily precipitation	31.8 mm (1.3 in)	34 of 100 (Routine)
Lakin	United States	Record daily precipitation	28.7 mm (1.1 in)	34 of 100 (Routine)
Cowaramup	Australia	Record daily precipitation	59.4 mm (2.3 in)	33 of 100 (Routine)
Woolners Arm	Australia	Record daily precipitation	32.7 mm (1.3 in)	33 of 100 (Routine)
Krambach (Tipperary)	Australia	Record daily precipitation	49.2 mm (1.9 in)	33 of 100 (Routine)
Sells	United States	Record high minimum temperature	20.0 C (68.0 F)	33 of 100 (Routine)
N Fk Rs	United States	Record high maximum temperature	33.3 C (91.9 F)	33 of 100 (Routine)
Red Lake Indian Agcy	United States	Record daily precipitation	32.0 mm (1.3 in)	33 of 100 (Routine)
Naranjal (Cfe)	Mexico	Record low minimum temperature	10.6 C (51.1 F)	32 of 100 (Routine)
Milstead	United States	Record daily precipitation	82.6 mm (3.3 in)	32 of 100 (Routine)
Healdsburg	United States	Record high maximum temperature	38.3 C (100.9 F)	32 of 100 (Routine)
Livermore	United States	Record high maximum temperature	37.2 C (99.0 F)	32 of 100 (Routine)
Kit Carson	United States	Record daily precipitation	27.9 mm (1.1 in)	32 of 100 (Routine)
Bricelyn	United States	Record daily precipitation	48.5 mm (1.9 in)	32 of 100 (Routine)
Concord	United States	Record daily precipitation	25.4 mm (1.0 in)	32 of 100 (Routine)

Counts by Type and Timescale

847 records

Records set or tied on 20 May 2001 by type: Highest daily maximum 205, Lowest daily maximum 33, Highest daily minimum 231, Lowest daily minimum 101, Heaviest daily rainfall 259, Heaviest daily snowfall 12, Deepest snow cover 6.

Records on 20 May 2001 by type
Record type	Records
Highest daily maximum	205
Lowest daily maximum	33
Highest daily minimum	231
Lowest daily minimum	101
Heaviest daily rainfall	259
Heaviest daily snowfall	12
Deepest snow cover	6

Records on 20 May 2001 by timescale: all-time 3, monthly 20, daily 824.

How Much Records Were Beaten By

651 broken records

Margins by which the 651 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 115.0. Ties are not counted.

Top 20 by Significance

20 May 2001

Top 20 records on 20 May 2001 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 May 2001	Miami, US	daily rain	97.3 mm (3.8 in)	66.8 mm (2.6 in)	92 years	77 of 100 (Major)
20 May 2001	New Delhi/Safdarjun, IN	daily rain	36.1 mm (1.4 in)	28.7 mm (1.1 in)	88 years	74 of 100 (Major)
20 May 2001	Hacienda la Y, MX	monthly rain	69.9 mm (2.8 in)	24.9 mm (1.0 in)	33 years	63 of 100 (Major)
20 May 2001	Port Macquarie (Bellevue Garde, AU	daily rain	90.8 mm (3.6 in)	38.7 mm (1.5 in)	118 years	58 of 100 (Notable)
20 May 2001	Keflavik, IS	monthly rain	77.5 mm (3.1 in)	25.4 mm (1.0 in)	0 years	55 of 100 (Notable)
20 May 2001	Harlan, US	daily rain	96.0 mm (3.8 in)	57.4 mm (2.3 in)	19 years	55 of 100 (Notable)
20 May 2001	Kilauea 1134, US	daily rain	116.8 mm (4.6 in)	88.4 mm (3.5 in)	18 years	54 of 100 (Notable)
20 May 2001	Milford 4 NW, US	daily rain	47.2 mm (1.9 in)	25.6 mm (1.0 in)	74 years	53 of 100 (Notable)
20 May 2001	Sioux Rapids, US	daily rain	58.2 mm (2.3 in)	38.9 mm (1.5 in)	40 years	53 of 100 (Notable)
20 May 2001	Hardy, US	daily rain	57.4 mm (2.3 in)	38.3 mm (1.5 in)	40 years	53 of 100 (Notable)
20 May 2001	Snyder, US	daily rain	58.4 mm (2.3 in)	30.0 mm (1.2 in)	84 years	51 of 100 (Notable)
20 May 2001	Primghar, US	daily rain	49.8 mm (2.0 in)	29.2 mm (1.1 in)	40 years	49 of 100 (Notable)
20 May 2001	Chapman Hill, AU	daily rain	79.2 mm (3.1 in)	57.1 mm (2.2 in)	12 years	48 of 100 (Notable)
20 May 2001	Turlock #2, US	daily high min	20.0 C (68.0 F)	3.3 C (5.9 F)	102 years	48 of 100 (Notable)
20 May 2001	Zuara, LY	daily high min	28.0 C (82.4 F)	7.4 C (13.3 F)	44 years	46 of 100 (Notable)
20 May 2001	East Park Rsvr, US	daily high min	20.6 C (69.1 F)	3.9 C (7.0 F)	90 years	46 of 100 (Notable)
20 May 2001	Scott City, US	daily rain	47.8 mm (1.9 in)	34.1 mm (1.3 in)	16 years	46 of 100 (Notable)
20 May 2001	Stockton 1 E, US	daily rain	38.9 mm (1.5 in)	27.2 mm (1.1 in)	60 years	46 of 100 (Notable)
20 May 2001	Asuncion Nochixtlan, MX	daily high max	40.0 C (104.0 F)	5.6 C (10.1 F)	70 years	45 of 100 (Notable)
20 May 2001	Eufaula Wildlife Ref, US	daily rain	80.5 mm (3.2 in)	51.8 mm (2.0 in)	20 years	45 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 2001

Records set or tied on this calendar date in each year from 1802 to 2001. 2001 had 847 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 2001-05-20: 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 20	605
20 to 40	32
40 to 60	10
60 to 80	2
80 to 100	1
100 to 120	1