Weather Records on 20 April 2021

1,215 weather records were set or tied worldwide on 20 April 2021. Highest significance: Hays 1 S, US.

Key Facts for 20 April 2021

On 20 April 2021, 1,215 weather records were set or tied at long-record stations worldwide.
156 were record highs and 607 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 43 monthly and 1,172 daily.
Hays 1 S set a daily record snow depth of 15.2 cm (6.0 in) on 20 April 2021.
Across 159 earlier years (1807 to 2026) the same calendar date averaged 457 records.

Record Map

1,215 stations

1,215 station records on 20 April 2021 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 April 2021: highest significance records shown on the map
Station	Country	Type	Value	Significance
Hays 1 S	United States	Record snow depth	15.2 cm (6.0 in)	73 of 100 (Major)
Hays 1 S	United States	Record daily snowfall	15.2 cm (6.0 in)	71 of 100 (Major)
Natoma	United States	Record daily snowfall	14.0 cm (5.5 in)	69 of 100 (Major)
Plainville 4WNW	United States	Record daily snowfall	11.4 cm (4.5 in)	67 of 100 (Major)
Holton	United States	Record daily snowfall	12.7 cm (5.0 in)	65 of 100 (Major)
McCracken	United States	Record daily snowfall	12.7 cm (5.0 in)	65 of 100 (Major)
Frankfort Disposal	United States	Record daily snowfall	8.9 cm (3.5 in)	64 of 100 (Major)
Minneapolis	United States	Record daily snowfall	12.7 cm (5.0 in)	64 of 100 (Major)
Ft Wayne Intl AP	United States	Record daily snowfall	10.7 cm (4.2 in)	63 of 100 (Major)
Lincoln 1 SE	United States	Record daily snowfall	11.9 cm (4.7 in)	62 of 100 (Major)
Anderson 1 N	United States	Record daily snowfall	5.1 cm (2.0 in)	61 of 100 (Major)
Mc Farland	United States	Record daily snowfall	10.9 cm (4.3 in)	61 of 100 (Major)
Hudson	United States	Record daily snowfall	10.2 cm (4.0 in)	59 of 100 (Notable)
Beloit	United States	Record daily snowfall	10.2 cm (4.0 in)	58 of 100 (Notable)
Great Bend 3WNW	United States	Record daily snowfall	9.4 cm (3.7 in)	58 of 100 (Notable)
Orlando Executive AP	United States	Record daily precipitation	46.0 mm (1.8 in)	58 of 100 (Notable)
Indianapolis	United States	Record daily snowfall	5.1 cm (2.0 in)	58 of 100 (Notable)
Evelyn State Forest	Australia	Record daily precipitation	44.0 mm (1.7 in)	57 of 100 (Notable)
Clay Ctr	United States	Record daily snowfall	8.9 cm (3.5 in)	57 of 100 (Notable)
Geneseo	United States	Record daily snowfall	12.7 cm (5.0 in)	57 of 100 (Notable)
Herkimer	United States	Record daily snowfall	7.6 cm (3.0 in)	55 of 100 (Notable)
Ionia	United States	Record daily snowfall	7.6 cm (3.0 in)	55 of 100 (Notable)
Loretta 1W	United States	Record daily snowfall	10.7 cm (4.2 in)	54 of 100 (Notable)
Findlay Wpcc	United States	Record daily snowfall	6.1 cm (2.4 in)	54 of 100 (Notable)
Cawker City	United States	Record daily snowfall	10.2 cm (4.0 in)	53 of 100 (Notable)
Lebanon	United States	Record daily snowfall	6.6 cm (2.6 in)	53 of 100 (Notable)
Loretta 1W	United States	Record snow depth	10.2 cm (4.0 in)	53 of 100 (Notable)
Concordia ASOS	United States	Record daily snowfall	7.9 cm (3.1 in)	53 of 100 (Notable)
Ellis	United States	Record daily snowfall	13.2 cm (5.2 in)	52 of 100 (Notable)
Holton	United States	Record snow depth	12.7 cm (5.0 in)	52 of 100 (Notable)
Minneapolis	United States	Record snow depth	12.7 cm (5.0 in)	52 of 100 (Notable)
Natoma	United States	Record snow depth	12.7 cm (5.0 in)	52 of 100 (Notable)
Overbrook 5 SE	United States	Record daily snowfall	7.1 cm (2.8 in)	52 of 100 (Notable)
Wabash	United States	Record daily snowfall	6.6 cm (2.6 in)	51 of 100 (Notable)
Collyer 10 S	United States	Record daily snowfall	15.2 cm (6.0 in)	51 of 100 (Notable)
Ellsworth	United States	Record daily snowfall	7.6 cm (3.0 in)	51 of 100 (Notable)
Bellenden Ker Bottom STN	Australia	Record daily precipitation	330.0 mm (13.0 in)	50 of 100 (Notable)
Upper Stone Exelby	Australia	Record daily precipitation	69.6 mm (2.7 in)	50 of 100 (Notable)
La Harpe	United States	Record daily snowfall	5.1 cm (2.0 in)	50 of 100 (Notable)
Frankfort Disposal	United States	Record snow depth	10.2 cm (4.0 in)	50 of 100 (Notable)
Cawker City	United States	Record snow depth	10.2 cm (4.0 in)	50 of 100 (Notable)
Collyer 10 S	United States	Record snow depth	10.2 cm (4.0 in)	50 of 100 (Notable)
Garnett 1 E	United States	Record daily snowfall	5.1 cm (2.0 in)	50 of 100 (Notable)
Plainville 4WNW	United States	Record snow depth	10.2 cm (4.0 in)	50 of 100 (Notable)
Pandora	United States	Record daily snowfall	8.9 cm (3.5 in)	50 of 100 (Notable)
Gail	United States	Record low maximum temperature	15.6 C (60.1 F)	50 of 100 (Notable)
Thermopolis	United States	Record low minimum temperature	-11.1 C (12.0 F)	50 of 100 (Notable)
Alexander	United States	Record daily snowfall	8.9 cm (3.5 in)	49 of 100 (Notable)
Atchison	United States	Record daily snowfall	9.1 cm (3.6 in)	49 of 100 (Notable)
Clifton	United States	Record daily snowfall	6.6 cm (2.6 in)	49 of 100 (Notable)
Haddam	United States	Record daily snowfall	5.3 cm (2.1 in)	49 of 100 (Notable)
Chornomorske	Ukraine	Record daily precipitation	33.0 mm (1.3 in)	48 of 100 (Notable)
Inman 5SW	United States	Record daily snowfall	8.9 cm (3.5 in)	48 of 100 (Notable)
Miltonvale	United States	Record daily snowfall	10.2 cm (4.0 in)	48 of 100 (Notable)
Albany	United States	Record daily snowfall	5.1 cm (2.0 in)	48 of 100 (Notable)
Edina	United States	Record daily snowfall	5.6 cm (2.2 in)	48 of 100 (Notable)
Herington	United States	Record daily snowfall	7.6 cm (3.0 in)	47 of 100 (Notable)
Lindsborg 3E	United States	Record daily snowfall	8.9 cm (3.5 in)	47 of 100 (Notable)
Fairbury 7S	United States	Record daily snowfall	5.8 cm (2.3 in)	47 of 100 (Notable)
Mount Olive	Australia	Record daily precipitation	171.2 mm (6.7 in)	46 of 100 (Notable)

Counts by Type and Timescale

1,215 records

Records set or tied on 20 April 2021 by type: Highest daily maximum 84, Lowest daily maximum 269, Highest daily minimum 72, Lowest daily minimum 338, Heaviest daily rainfall 58, Heaviest daily snowfall 214, Deepest snow cover 180.

Records on 20 April 2021 by type
Record type	Records
Highest daily maximum	84
Lowest daily maximum	269
Highest daily minimum	72
Lowest daily minimum	338
Heaviest daily rainfall	58
Heaviest daily snowfall	214
Deepest snow cover	180

Records on 20 April 2021 by timescale: all-time 0, monthly 43, daily 1,172.

How Much Records Were Beaten By

1,055 broken records

Margins by which the 1,055 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 178.0. Ties are not counted.

Top 20 by Significance

20 April 2021

Top 20 records on 20 April 2021 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 April 2021	Hays 1 S, US	daily snow depth	15.2 cm (6.0 in)	15.2 cm (6.0 in)	120 years	73 of 100 (Major)
20 April 2021	Hays 1 S, US	daily snowfall	15.2 cm (6.0 in)	15.2 cm (6.0 in)	125 years	71 of 100 (Major)
20 April 2021	Natoma, US	daily snowfall	14.0 cm (5.5 in)	14.0 cm (5.5 in)	108 years	69 of 100 (Major)
20 April 2021	Plainville 4WNW, US	daily snowfall	11.4 cm (4.5 in)	11.4 cm (4.5 in)	116 years	67 of 100 (Major)
20 April 2021	Holton, US	daily snowfall	12.7 cm (5.0 in)	12.7 cm (5.0 in)	118 years	65 of 100 (Major)
20 April 2021	McCracken, US	daily snowfall	12.7 cm (5.0 in)	12.7 cm (5.0 in)	108 years	65 of 100 (Major)
20 April 2021	Frankfort Disposal, US	daily snowfall	8.9 cm (3.5 in)	8.9 cm (3.5 in)	107 years	64 of 100 (Major)
20 April 2021	Minneapolis, US	daily snowfall	12.7 cm (5.0 in)	12.7 cm (5.0 in)	125 years	64 of 100 (Major)
20 April 2021	Ft Wayne Intl AP, US	daily snowfall	10.7 cm (4.2 in)	10.2 cm (4.0 in)	68 years	63 of 100 (Major)
20 April 2021	Lincoln 1 SE, US	daily snowfall	11.9 cm (4.7 in)	11.9 cm (4.7 in)	108 years	62 of 100 (Major)
20 April 2021	Anderson 1 N, US	daily snowfall	5.1 cm (2.0 in)	5.1 cm (2.0 in)	124 years	61 of 100 (Major)
20 April 2021	Mc Farland, US	daily snowfall	10.9 cm (4.3 in)	10.9 cm (4.3 in)	103 years	61 of 100 (Major)
20 April 2021	Hudson, US	daily snowfall	10.2 cm (4.0 in)	10.2 cm (4.0 in)	98 years	59 of 100 (Notable)
20 April 2021	Beloit, US	daily snowfall	10.2 cm (4.0 in)	10.2 cm (4.0 in)	120 years	58 of 100 (Notable)
20 April 2021	Great Bend 3WNW, US	daily snowfall	9.4 cm (3.7 in)	9.4 cm (3.7 in)	108 years	58 of 100 (Notable)
20 April 2021	Orlando Executive AP, US	daily rain	46.0 mm (1.8 in)	23.4 mm (0.9 in)	127 years	58 of 100 (Notable)
20 April 2021	Indianapolis, US	daily snowfall	5.1 cm (2.0 in)	5.1 cm (2.0 in)	72 years	58 of 100 (Notable)
20 April 2021	Evelyn State Forest, AU	daily rain	44.0 mm (1.7 in)	22.4 mm (0.9 in)	87 years	57 of 100 (Notable)
20 April 2021	Clay Ctr, US	daily snowfall	8.9 cm (3.5 in)	8.9 cm (3.5 in)	118 years	57 of 100 (Notable)
20 April 2021	Geneseo, US	daily snowfall	12.7 cm (5.0 in)	12.7 cm (5.0 in)	80 years	57 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

1807 to 2021

Records set or tied on this calendar date in each year from 1807 to 2021. 2021 had 1,215 records.

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

Records on 04-20 in each year
Year	Records
1807	3
1817	1
1838	1
1849	2
1851	1
1852	4
1854	1
1858	1
1860	1
1864	1
1865	3
1868	1
1869	1
1870	1
1872	1
1874	3
1875	4
1876	1
1878	2
1880	2
1881	2
1884	1
1885	1
1886	2
1889	1
1891	2
1892	1
1893	6
1894	8
1895	7
1896	3
1897	6
1898	1
1899	1
1901	8
1902	3
1903	14
1904	31
1905	9
1906	12
1907	18
1908	14
1909	22
1910	25
1911	18
1912	12
1913	19
1914	46
1915	45
1916	19
1917	33
1918	42
1919	17
1920	49
1921	27
1922	40
1923	157
1924	113
1925	169
1926	310
1927	442
1928	212
1929	182
1930	87
1931	255
1932	166
1933	279
1934	384
1935	384
1936	311
1937	427
1938	339
1939	158
1940	519
1941	558
1942	223
1943	670
1944	304
1945	391
1946	395
1947	308
1948	493
1949	477
1950	329
1951	690
1952	552
1953	1,071
1954	377
1955	623
1956	384
1957	730
1958	327
1959	563
1960	472
1961	1,078
1962	487
1963	595
1964	749
1965	724
1966	1,174
1967	864
1968	975
1969	382
1970	948
1971	765
1972	531
1973	982
1974	673
1975	344
1976	661
1977	693
1978	800
1979	495
1980	1,539
1981	706
1982	906
1983	1,844
1984	922
1985	1,140
1986	770
1987	1,447
1988	1,144
1989	1,187
1990	1,495
1991	1,075
1992	1,009
1993	772
1994	756
1995	1,351
1996	970
1997	833
1998	1,490
1999	674
2000	931
2001	752
2002	1,081
2003	758
2004	567
2005	707
2006	859
2007	582
2008	1,110
2009	845
2010	693
2011	1,477
2012	726
2013	1,520
2014	384
2015	702
2016	650
2017	734
2018	1,309
2019	1,019
2020	449
2021	1,215
2022	596
2023	828
2024	673
2025	836
2026	533

Download the Data

Data for records on 2021-04-20: 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 25	755
25 to 50	103
50 to 75	76
75 to 100	64
100 to 125	37
125 to 150	16
150 to 175	2
175 to 200	2