Weather Records on 30 April 2021

1,167 weather records were set or tied worldwide on 30 April 2021. Highest significance: Elmira, US.

Key Facts for 30 April 2021

On 30 April 2021, 1,167 weather records were set or tied at long-record stations worldwide.
821 were record highs and 78 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 105 monthly and 1,062 daily.
Elmira set a daily record precipitation of 42.7 mm (1.7 in) on 30 April 2021.
Across 165 earlier years (1795 to 2026) the same calendar date averaged 442 records.

Record Map

1,167 stations

1,167 station records on 30 April 2021 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 April 2021: highest significance records shown on the map
Station	Country	Type	Value	Significance
Elmira	United States	Record daily precipitation	42.7 mm (1.7 in)	70 of 100 (Major)
Allegany Sp	United States	Record daily precipitation	52.1 mm (2.1 in)	66 of 100 (Major)
Maraza	Azerbaijan	Record daily precipitation	99.6 mm (3.9 in)	63 of 100 (Major)
Turocak	Russia	Record daily precipitation	38.1 mm (1.5 in)	62 of 100 (Major)
Ithaca Cornell UNIV	United States	Record daily precipitation	34.0 mm (1.3 in)	60 of 100 (Major)
Greenville Wtp	United States	Record daily precipitation	43.2 mm (1.7 in)	60 of 100 (Major)
Alfred	United States	Record daily precipitation	43.9 mm (1.7 in)	59 of 100 (Notable)
Middleton	United States	Record daily precipitation	82.6 mm (3.3 in)	58 of 100 (Notable)
Hornell Almond Dam	United States	Record daily precipitation	42.7 mm (1.7 in)	58 of 100 (Notable)
Olean	United States	Record daily precipitation	50.5 mm (2.0 in)	58 of 100 (Notable)
Houlton AP	United States	Record daily precipitation	33.3 mm (1.3 in)	56 of 100 (Notable)
Haverhill	United States	Record daily precipitation	47.0 mm (1.9 in)	54 of 100 (Notable)
Obihiro	Japan	Record daily precipitation	64.0 mm (2.5 in)	53 of 100 (Notable)
Araluen	Australia	Record daily precipitation	39.2 mm (1.5 in)	52 of 100 (Notable)
Paragonah	United States	Record high maximum temperature	32.2 C (90.0 F)	51 of 100 (Notable)
Innadong	Australia	Record daily precipitation	25.0 mm (1.0 in)	50 of 100 (Notable)
Jamestown 4 ENE	United States	Record daily precipitation	45.2 mm (1.8 in)	50 of 100 (Notable)
Woodruff	United States	Record high maximum temperature	27.2 C (81.0 F)	50 of 100 (Notable)
Warren	United States	Record daily precipitation	39.9 mm (1.6 in)	49 of 100 (Notable)
Phitsanulok/Sarit	Thailand	Record daily precipitation	69.9 mm (2.8 in)	48 of 100 (Notable)
Saint Johnsbury	United States	Record daily precipitation	30.5 mm (1.2 in)	48 of 100 (Notable)
Palacios Muni AP	United States	Record daily precipitation	73.9 mm (2.9 in)	48 of 100 (Notable)
Jimma	Ethiopia	Record daily precipitation	55.1 mm (2.2 in)	47 of 100 (Notable)
Attenkam	Germany	Record daily precipitation	30.2 mm (1.2 in)	46 of 100 (Notable)
Kitamiesashi	Japan	Record daily precipitation	50.0 mm (2.0 in)	46 of 100 (Notable)
Adel	United States	Record high minimum temperature	10.0 C (50.0 F)	46 of 100 (Notable)
Luling	United States	Record daily precipitation	91.9 mm (3.6 in)	46 of 100 (Notable)
Keene	United States	Record daily precipitation	32.0 mm (1.3 in)	44 of 100 (Notable)
Corning	United States	Record daily precipitation	72.1 mm (2.8 in)	44 of 100 (Notable)
Greene	United States	Record daily precipitation	43.2 mm (1.7 in)	44 of 100 (Notable)
San Antonio Intl AP	United States	Record daily precipitation	51.1 mm (2.0 in)	44 of 100 (Notable)
Millinocket Muni AP	United States	Record daily precipitation	37.1 mm (1.5 in)	44 of 100 (Notable)
Imperial	United States	Record high maximum temperature	40.6 C (105.1 F)	43 of 100 (Notable)
Yreka	United States	Record high maximum temperature	31.1 C (88.0 F)	43 of 100 (Notable)
Mackay Lost Rvr Rs	United States	Record high maximum temperature	27.2 C (81.0 F)	43 of 100 (Notable)
Whitesville 1N	United States	Record daily precipitation	34.3 mm (1.4 in)	43 of 100 (Notable)
Rutland	United States	Record daily precipitation	28.4 mm (1.1 in)	43 of 100 (Notable)
Hammer Odde Fyr-1	Denmark	Record daily precipitation	29.2 mm (1.1 in)	42 of 100 (Notable)
Nashua 2 NNW	United States	Record daily precipitation	39.4 mm (1.6 in)	42 of 100 (Notable)
Angelica	United States	Record daily precipitation	45.0 mm (1.8 in)	42 of 100 (Notable)
Delhi 2 SE	United States	Record daily precipitation	47.5 mm (1.9 in)	42 of 100 (Notable)
Gospic	Croatia	Record high minimum temperature	13.3 C (55.9 F)	41 of 100 (Notable)
Shoshone 1 WNW	United States	Record high maximum temperature	31.1 C (88.0 F)	41 of 100 (Notable)
Newburyport	United States	Record daily precipitation	33.3 mm (1.3 in)	41 of 100 (Notable)
Goldbutte 7 N	United States	Record high minimum temperature	10.6 C (51.1 F)	41 of 100 (Notable)
Little Valley	United States	Record daily precipitation	36.8 mm (1.4 in)	41 of 100 (Notable)
Ft Davis	United States	Record low maximum temperature	16.7 C (62.1 F)	41 of 100 (Notable)
Lewistown AP	United States	Record high minimum temperature	10.6 C (51.1 F)	41 of 100 (Notable)
Northcliffe	Australia	Record daily precipitation	36.0 mm (1.4 in)	40 of 100 (Notable)
Pemberton	Australia	Record daily precipitation	43.2 mm (1.7 in)	40 of 100 (Notable)
East London	South Africa	Record daily precipitation	95.0 mm (3.7 in)	40 of 100 (Notable)
Cedarville	United States	Record high maximum temperature	28.3 C (82.9 F)	40 of 100 (Notable)
Ashburnham	United States	Record daily precipitation	66.8 mm (2.6 in)	40 of 100 (Notable)
Surry Mtn Lake	United States	Record daily precipitation	31.8 mm (1.3 in)	40 of 100 (Notable)
Hallettsville 2 N	United States	Record daily precipitation	61.7 mm (2.4 in)	40 of 100 (Notable)
New Cumberland L/D	United States	Record daily precipitation	38.6 mm (1.5 in)	40 of 100 (Notable)
Cowaramup	Australia	Record daily precipitation	29.6 mm (1.2 in)	39 of 100 (Notable)
Aurora Rsch Farm	United States	Record daily precipitation	30.0 mm (1.2 in)	39 of 100 (Notable)
Pavillion	United States	Record high maximum temperature	27.8 C (82.0 F)	39 of 100 (Notable)
Donora 1 SW	United States	Record daily precipitation	71.6 mm (2.8 in)	38 of 100 (Notable)

Counts by Type and Timescale

1,167 records

Records set or tied on 30 April 2021 by type: Highest daily maximum 480, Lowest daily maximum 34, Highest daily minimum 341, Lowest daily minimum 44, Heaviest daily rainfall 265, Heaviest daily snowfall 3.

Records on 30 April 2021 by type
Record type	Records
Highest daily maximum	480
Lowest daily maximum	34
Highest daily minimum	341
Lowest daily minimum	44
Heaviest daily rainfall	265
Heaviest daily snowfall	3
Deepest snow cover	0

Records on 30 April 2021 by timescale: all-time 0, monthly 105, daily 1,062.

How Much Records Were Beaten By

997 broken records

Margins by which the 997 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 81.8. Ties are not counted.

Top 20 by Significance

30 April 2021

Top 20 records on 30 April 2021 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 April 2021	Elmira, US	daily rain	42.7 mm (1.7 in)	24.4 mm (1.0 in)	108 years	70 of 100 (Major)
30 April 2021	Allegany Sp, US	daily rain	52.1 mm (2.1 in)	34.3 mm (1.4 in)	59 years	66 of 100 (Major)
30 April 2021	Maraza, AZ	daily rain	99.6 mm (3.9 in)	81.8 mm (3.2 in)	56 years	63 of 100 (Major)
30 April 2021	Turocak, RU	daily rain	38.1 mm (1.5 in)	19.4 mm (0.8 in)	70 years	62 of 100 (Major)
30 April 2021	Ithaca Cornell UNIV, US	daily rain	34.0 mm (1.3 in)	13.7 mm (0.5 in)	112 years	60 of 100 (Major)
30 April 2021	Greenville Wtp, US	daily rain	43.2 mm (1.7 in)	19.8 mm (0.8 in)	112 years	60 of 100 (Major)
30 April 2021	Alfred, US	daily rain	43.9 mm (1.7 in)	22.1 mm (0.9 in)	59 years	59 of 100 (Notable)
30 April 2021	Middleton, US	daily rain	82.6 mm (3.3 in)	58.2 mm (2.3 in)	30 years	58 of 100 (Notable)
30 April 2021	Hornell Almond Dam, US	daily rain	42.7 mm (1.7 in)	23.4 mm (0.9 in)	59 years	58 of 100 (Notable)
30 April 2021	Olean, US	daily rain	50.5 mm (2.0 in)	26.6 mm (1.0 in)	38 years	58 of 100 (Notable)
30 April 2021	Houlton AP, US	daily rain	33.3 mm (1.3 in)	22.1 mm (0.9 in)	59 years	56 of 100 (Notable)
30 April 2021	Haverhill, US	daily rain	47.0 mm (1.9 in)	18.8 mm (0.7 in)	98 years	54 of 100 (Notable)
30 April 2021	Obihiro, JP	daily rain	64.0 mm (2.5 in)	35.0 mm (1.4 in)	32 years	53 of 100 (Notable)
30 April 2021	Araluen, AU	daily rain	39.2 mm (1.5 in)	21.4 mm (0.8 in)	76 years	52 of 100 (Notable)
30 April 2021	Paragonah, US	monthly high max	32.2 C (90.0 F)	1.1 C (2.0 F)	111 years	51 of 100 (Notable)
30 April 2021	Innadong, AU	daily rain	25.0 mm (1.0 in)	8.5 mm (0.33 in)	110 years	50 of 100 (Notable)
30 April 2021	Jamestown 4 ENE, US	daily rain	45.2 mm (1.8 in)	20.6 mm (0.8 in)	59 years	50 of 100 (Notable)
30 April 2021	Woodruff, US	monthly high max	27.2 C (81.0 F)	0.5 C (0.9 F)	111 years	50 of 100 (Notable)
30 April 2021	Warren, US	daily rain	39.9 mm (1.6 in)	6.9 mm (0.27 in)	112 years	49 of 100 (Notable)
30 April 2021	Phitsanulok/Sarit, TH	daily rain	69.9 mm (2.8 in)	32.5 mm (1.3 in)	68 years	48 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

1795 to 2021

Records set or tied on this calendar date in each year from 1795 to 2021. 2021 had 1,167 records.

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

Records on 04-30 in each year
Year	Records
1795	1
1804	1
1809	1
1812	1
1814	2
1833	1
1840	1
1848	1
1850	1
1853	1
1854	1
1856	1
1859	1
1862	1
1864	1
1865	1
1866	3
1872	1
1873	1
1874	2
1876	1
1878	4
1879	2
1880	1
1881	1
1882	1
1884	1
1885	1
1886	5
1888	1
1889	1
1891	5
1892	7
1894	1
1895	5
1896	3
1897	2
1898	6
1899	11
1900	4
1901	8
1902	13
1903	21
1904	11
1905	9
1906	16
1907	35
1908	28
1909	74
1910	17
1911	19
1912	18
1913	62
1914	8
1915	20
1916	21
1917	25
1918	28
1919	130
1920	70
1921	54
1922	138
1923	42
1924	96
1925	210
1926	331
1927	127
1928	130
1929	119
1930	232
1931	548
1932	145
1933	422
1934	443
1935	327
1936	373
1937	228
1938	282
1939	268
1940	526
1941	484
1942	1,163
1943	470
1944	286
1945	314
1946	301
1947	330
1948	912
1949	447
1950	671
1951	783
1952	435
1953	635
1954	1,224
1955	1,252
1956	908
1957	401
1958	482
1959	575
1960	507
1961	381
1962	617
1963	730
1964	339
1965	488
1966	740
1967	914
1968	928
1969	587
1970	1,189
1971	365
1972	497
1973	398
1974	822
1975	468
1976	783
1977	525
1978	631
1979	675
1980	545
1981	1,342
1982	504
1983	1,154
1984	1,519
1985	650
1986	660
1987	1,437
1988	808
1989	674
1990	977
1991	828
1992	1,808
1993	765
1994	1,499
1995	1,007
1996	1,637
1997	764
1998	857
1999	1,012
2000	1,046
2001	900
2002	1,171
2003	927
2004	703
2005	1,113
2006	778
2007	996
2008	1,260
2009	660
2010	921
2011	636
2012	819
2013	732
2014	946
2015	380
2016	969
2017	1,450
2018	708
2019	700
2020	1,476
2021	1,167
2022	499
2023	782
2024	705
2025	489
2026	365

Download the Data

Data for records on 2021-04-30: 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	964
20 to 40	29
40 to 60	3
60 to 80	0
80 to 100	1