Weather Records on 21 April 2001

967 weather records were set or tied worldwide on 21 April 2001. Highest significance: Markleeville, US.

Key Facts for 21 April 2001

On 21 April 2001, 967 weather records were set or tied at long-record stations worldwide.
320 were record highs and 301 were record lows, counting maximum and minimum temperature.
By timescale, 4 were all-time records, 15 monthly and 948 daily.
Markleeville set a daily record precipitation of 30.2 mm (1.2 in) on 21 April 2001.
Across 159 earlier years (1793 to 2026) the same calendar date averaged 459 records.

Record Map

967 stations

967 station records on 21 April 2001 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 April 2001: highest significance records shown on the map
Station	Country	Type	Value	Significance
Markleeville	United States	Record daily precipitation	30.2 mm (1.2 in)	66 of 100 (Major)
Ilford (Warrangunyah)	Australia	Record daily precipitation	71.0 mm (2.8 in)	62 of 100 (Major)
Wisemans Ferry (Old Po)	Australia	Record daily precipitation	85.2 mm (3.4 in)	57 of 100 (Notable)
Lake Yellowstone	United States	Record daily precipitation	25.4 mm (1.0 in)	54 of 100 (Notable)
Chillicothe 2S	United States	Record daily precipitation	62.2 mm (2.4 in)	51 of 100 (Notable)
Lodgepole	United States	Record daily snowfall	50.8 cm (20.0 in)	50 of 100 (Notable)
Vermillion 2 SE	United States	Record daily precipitation	52.1 mm (2.1 in)	49 of 100 (Notable)
Yarramalong (Lewensbrook)	Australia	Record daily precipitation	76.2 mm (3.0 in)	48 of 100 (Notable)
Sonnblick	Austria	Record daily precipitation	38.3 mm (1.5 in)	48 of 100 (Notable)
Amberg-Unterammersricht	Germany	Record daily precipitation	25.6 mm (1.0 in)	48 of 100 (Notable)
Parsberg/Oberpfalz-Eglwang	Germany	Record daily precipitation	26.9 mm (1.1 in)	48 of 100 (Notable)
Manly Vale (Manly Dam)	Australia	Record daily precipitation	50.0 mm (2.0 in)	45 of 100 (Notable)
Elkader 6 SSW	United States	Record high minimum temperature	17.2 C (63.0 F)	44 of 100 (Notable)
Beaver Is	United States	Record high maximum temperature	21.7 C (71.1 F)	43 of 100 (Notable)
Auburn	United States	Record daily precipitation	34.0 mm (1.3 in)	42 of 100 (Notable)
Olathe 3E	United States	Record high minimum temperature	20.0 C (68.0 F)	42 of 100 (Notable)
Milan	Italy	Record low maximum temperature	8.4 C (47.1 F)	41 of 100 (Notable)
Charleston	United States	Record high minimum temperature	17.8 C (64.0 F)	41 of 100 (Notable)
Haikou	China	Record high maximum temperature	39.6 C (103.3 F)	40 of 100 (Notable)
Busby	United States	Record daily snowfall	12.7 cm (5.0 in)	40 of 100 (Notable)
Berkeley	United States	Record low maximum temperature	11.1 C (52.0 F)	39 of 100 (Notable)
Lamar 7N	United States	Record high minimum temperature	19.4 C (66.9 F)	39 of 100 (Notable)
Nevada Wtp	United States	Record high minimum temperature	19.4 C (66.9 F)	39 of 100 (Notable)
Fishtail	United States	Record daily snowfall	25.4 cm (10.0 in)	39 of 100 (Notable)
Paling Yards (Ulabri)	Australia	Record daily precipitation	37.8 mm (1.5 in)	38 of 100 (Notable)
Schwandorf	Germany	Record daily precipitation	25.4 mm (1.0 in)	38 of 100 (Notable)
Red Owl	United States	Record daily snowfall	17.8 cm (7.0 in)	38 of 100 (Notable)
Glen Alice	Australia	Record daily precipitation	45.2 mm (1.8 in)	37 of 100 (Notable)
Freiburg	Germany	Record low maximum temperature	4.9 C (40.8 F)	37 of 100 (Notable)
Zuerich/Fluntern	Switzerland	Record low maximum temperature	1.7 C (35.1 F)	37 of 100 (Notable)
Julian Cdf	United States	Record daily precipitation	37.6 mm (1.5 in)	37 of 100 (Notable)
Estherville 4E	United States	Record daily precipitation	47.0 mm (1.9 in)	37 of 100 (Notable)
Martinsdale 3 NNW	United States	Record daily snowfall	13.0 cm (5.1 in)	37 of 100 (Notable)
Weissenburg	Germany	Record low maximum temperature	2.9 C (37.2 F)	36 of 100 (Notable)
Mancos 1SW	United States	Record high minimum temperature	5.0 C (41.0 F)	36 of 100 (Notable)
Middle Dam	United States	Record snow depth	30.5 cm (12.0 in)	36 of 100 (Notable)
Wattle Flat General Store	Australia	Record daily precipitation	58.0 mm (2.3 in)	35 of 100 (Notable)
Claremore 2 ENE	United States	Record high minimum temperature	20.6 C (69.1 F)	35 of 100 (Notable)
La Barge	United States	Record snow depth	10.2 cm (4.0 in)	35 of 100 (Notable)
Valle Nacional	Mexico	Record low minimum temperature	8.9 C (48.0 F)	34 of 100 (Routine)
Dorado 2 WNW	Puerto Rico [United States]	Record high minimum temperature	23.9 C (75.0 F)	34 of 100 (Routine)
Basel Binningen	Switzerland	Record low maximum temperature	4.9 C (40.8 F)	34 of 100 (Routine)
Newport Beach Harbor	United States	Record low maximum temperature	13.3 C (55.9 F)	34 of 100 (Routine)
Bartlesville Muni AP	United States	Record high minimum temperature	21.7 C (71.1 F)	34 of 100 (Routine)
Chanute Martin Johnson AP	United States	Record high minimum temperature	19.4 C (66.9 F)	34 of 100 (Routine)
Sotuta (Dge)	Mexico	Record high maximum temperature	45.6 C (114.1 F)	33 of 100 (Routine)
Appleton City	United States	Record high minimum temperature	18.9 C (66.0 F)	33 of 100 (Routine)
Hobart Muni AP	United States	Record high minimum temperature	19.4 C (66.9 F)	33 of 100 (Routine)
Rylstone (Ilford Rd)	Australia	Record daily precipitation	53.0 mm (2.1 in)	32 of 100 (Routine)
Bad-Calmbach Wildbad	Germany	Record daily precipitation	27.8 mm (1.1 in)	32 of 100 (Routine)
Trona	United States	Record low maximum temperature	14.4 C (57.9 F)	32 of 100 (Routine)
Cedar	United States	Record daily precipitation	30.2 mm (1.2 in)	32 of 100 (Routine)
Puntilla	United States	Record low maximum temperature	-14.4 C (6.1 F)	32 of 100 (Routine)
Merklingen	Germany	Record snow depth	13.0 cm (5.1 in)	31 of 100 (Routine)
Villingen-Schwenningen	Germany	Record snow depth	11.0 cm (4.3 in)	31 of 100 (Routine)
Nuevo Casas Grandes (Dge)	Mexico	Record high minimum temperature	18.3 C (64.9 F)	31 of 100 (Routine)
Benton Inspection STN	United States	Record daily snowfall	15.2 cm (6.0 in)	31 of 100 (Routine)
Townsend 3SE	United States	Record daily snowfall	6.4 cm (2.5 in)	31 of 100 (Routine)
Altus Irig Rsch STN	United States	Record high minimum temperature	19.4 C (66.9 F)	31 of 100 (Routine)
Snyder	United States	Record high minimum temperature	18.9 C (66.0 F)	31 of 100 (Routine)

Counts by Type and Timescale

967 records

Records set or tied on 21 April 2001 by type: Highest daily maximum 70, Lowest daily maximum 239, Highest daily minimum 250, Lowest daily minimum 62, Heaviest daily rainfall 250, Heaviest daily snowfall 45, Deepest snow cover 51.

Records on 21 April 2001 by type
Record type	Records
Highest daily maximum	70
Lowest daily maximum	239
Highest daily minimum	250
Lowest daily minimum	62
Heaviest daily rainfall	250
Heaviest daily snowfall	45
Deepest snow cover	51

Records on 21 April 2001 by timescale: all-time 4, monthly 15, daily 948.

How Much Records Were Beaten By

781 broken records

Margins by which the 781 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 406.0. Ties are not counted.

Top 20 by Significance

21 April 2001

Top 20 records on 21 April 2001 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 April 2001	Markleeville, US	daily rain	30.2 mm (1.2 in)	23.3 mm (0.9 in)	76 years	66 of 100 (Major)
21 April 2001	Ilford (Warrangunyah), AU	daily rain	71.0 mm (2.8 in)	26.5 mm (1.0 in)	100 years	62 of 100 (Major)
21 April 2001	Wisemans Ferry (Old Po), AU	daily rain	85.2 mm (3.4 in)	61.1 mm (2.4 in)	36 years	57 of 100 (Notable)
21 April 2001	Lake Yellowstone, US	daily rain	25.4 mm (1.0 in)	14.0 mm (0.6 in)	39 years	54 of 100 (Notable)
21 April 2001	Chillicothe 2S, US	daily rain	62.2 mm (2.4 in)	24.1 mm (0.9 in)	72 years	51 of 100 (Notable)
21 April 2001	Lodgepole, US	daily snowfall	50.8 cm (20.0 in)	40.6 cm (16.0 in)	31 years	50 of 100 (Notable)
21 April 2001	Vermillion 2 SE, US	daily rain	52.1 mm (2.1 in)	16.8 mm (0.7 in)	78 years	49 of 100 (Notable)
21 April 2001	Yarramalong (Lewensbrook), AU	daily rain	76.2 mm (3.0 in)	71.6 mm (2.8 in)	16 years	48 of 100 (Notable)
21 April 2001	Sonnblick, AT	daily rain	38.3 mm (1.5 in)	13.8 mm (0.5 in)	70 years	48 of 100 (Notable)
21 April 2001	Amberg-Unterammersricht, DE	daily rain	25.6 mm (1.0 in)	16.8 mm (0.7 in)	12 years	48 of 100 (Notable)
21 April 2001	Parsberg/Oberpfalz-Eglwang, DE	daily rain	26.9 mm (1.1 in)	17.9 mm (0.7 in)	12 years	48 of 100 (Notable)
21 April 2001	Manly Vale (Manly Dam), AU	daily rain	50.0 mm (2.0 in)	18.0 mm (0.7 in)	88 years	45 of 100 (Notable)
21 April 2001	Elkader 6 SSW, US	daily high min	17.2 C (63.0 F)	3.9 C (7.0 F)	92 years	44 of 100 (Notable)
21 April 2001	Beaver Is, US	daily high max	21.7 C (71.1 F)	3.4 C (6.1 F)	95 years	43 of 100 (Notable)
21 April 2001	Auburn, US	daily rain	34.0 mm (1.3 in)	24.9 mm (1.0 in)	46 years	42 of 100 (Notable)
21 April 2001	Olathe 3E, US	daily high min	20.0 C (68.0 F)	1.7 C (3.1 F)	99 years	42 of 100 (Notable)
21 April 2001	Milan, IT	daily low max	8.4 C (47.1 F)	0.4 C (0.7 F)	213 years	41 of 100 (Notable)
21 April 2001	Charleston, US	daily high min	17.8 C (64.0 F)	0.6 C (1.1 F)	104 years	41 of 100 (Notable)
21 April 2001	Haikou, CN	all-time high max	39.6 C (103.3 F)	0.7 C (1.3 F)	49 years	40 of 100 (Notable)
21 April 2001	Busby, US	daily snowfall	12.7 cm (5.0 in)	3.8 cm (1.5 in)	80 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

1793 to 2001

Records set or tied on this calendar date in each year from 1793 to 2001. 2001 had 967 records.

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

Records on 04-21 in each year
Year	Records
1793	1
1814	1
1820	1
1838	1
1849	2
1851	1
1852	3
1854	1
1858	3
1861	2
1865	3
1866	1
1868	1
1870	1
1875	4
1876	2
1877	1
1879	3
1880	1
1881	1
1882	1
1884	1
1885	2
1888	1
1890	1
1891	1
1892	1
1893	2
1894	4
1895	1
1897	1
1898	2
1899	2
1900	7
1901	17
1902	7
1903	3
1904	10
1905	18
1906	5
1907	17
1908	25
1909	20
1910	33
1911	9
1912	22
1913	14
1914	220
1915	24
1916	64
1917	48
1918	84
1919	31
1920	85
1921	59
1922	70
1923	223
1924	119
1925	295
1926	148
1927	284
1928	269
1929	193
1930	127
1931	358
1932	304
1933	201
1934	497
1935	266
1936	277
1937	416
1938	295
1939	110
1940	462
1941	306
1942	285
1943	481
1944	261
1945	367
1946	448
1947	459
1948	365
1949	448
1950	529
1951	884
1952	665
1953	640
1954	527
1955	607
1956	497
1957	824
1958	329
1959	505
1960	889
1961	647
1962	319
1963	778
1964	1,125
1965	658
1966	756
1967	903
1968	655
1969	388
1970	728
1971	546
1972	593
1973	1,163
1974	528
1975	360
1976	452
1977	854
1978	735
1979	449
1980	1,934
1981	944
1982	1,075
1983	1,366
1984	1,231
1985	1,245
1986	977
1987	1,290
1988	898
1989	1,557
1990	1,463
1991	1,291
1992	1,763
1993	847
1994	859
1995	1,476
1996	788
1997	964
1998	876
1999	752
2000	921
2001	967
2002	1,312
2003	607
2004	586
2005	693
2006	761
2007	480
2008	1,327
2009	983
2010	805
2011	1,053
2012	687
2013	1,015
2014	393
2015	621
2016	587
2017	797
2018	862
2019	731
2020	397
2021	1,608
2022	433
2023	886
2024	754
2025	506
2026	853

Download the Data

Data for records on 2001-04-21: 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Margin	Records
0 to 100	769
100 to 200	8
200 to 300	2
300 to 400	1
400 to 500	1