Weather Records on 27 April 2021

450 weather records were set or tied worldwide on 27 April 2021. Highest significance: Sisian, AM.

Key Facts for 27 April 2021

On 27 April 2021, 450 weather records were set or tied at long-record stations worldwide.
182 were record highs and 168 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 13 monthly and 437 daily.
Sisian set a daily record precipitation of 99.1 mm (3.9 in) on 27 April 2021.
Across 158 earlier years (1795 to 2026) the same calendar date averaged 475 records.

Record Map

450 stations

450 station records on 27 April 2021 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 27 April 2021: highest significance records shown on the map
Station	Country	Type	Value	Significance
Sisian	Armenia	Record daily precipitation	99.1 mm (3.9 in)	67 of 100 (Major)
McDermitt	United States	Record daily snowfall	7.9 cm (3.1 in)	63 of 100 (Major)
Akron Washington Co AP	United States	Record daily precipitation	71.4 mm (2.8 in)	62 of 100 (Major)
Cheyenne	United States	Record daily precipitation	36.1 mm (1.4 in)	60 of 100 (Major)
Meringa Sugar Exp STN	Australia	Record daily precipitation	189.0 mm (7.4 in)	59 of 100 (Notable)
Rotuma	Fiji	Record daily precipitation	170.0 mm (6.7 in)	52 of 100 (Notable)
Bear Lake	United States	Record daily precipitation	43.2 mm (1.7 in)	51 of 100 (Notable)
Kazalinsk	Kazakhstan	Record high maximum temperature	36.6 C (97.9 F)	50 of 100 (Notable)
Ketchum Rs	United States	Record daily snowfall	17.8 cm (7.0 in)	45 of 100 (Notable)
Kaneohe Bay MCAS	United States	Record high minimum temperature	25.0 C (77.0 F)	45 of 100 (Notable)
Walnut Creek	United States	Record daily precipitation	26.7 mm (1.1 in)	42 of 100 (Notable)
Allerton	United States	Record high maximum temperature	28.9 C (84.0 F)	42 of 100 (Notable)
Macau Intl	Macau S.A.R	Record daily precipitation	44.5 mm (1.8 in)	41 of 100 (Notable)
Samburg Wr	United States	Record low minimum temperature	0.0 C (32.0 F)	41 of 100 (Notable)
Charlevoix	United States	Record low maximum temperature	3.9 C (39.0 F)	40 of 100 (Notable)
Dandong	China	Record daily precipitation	27.9 mm (1.1 in)	37 of 100 (Notable)
Gavar	Armenia	Record high maximum temperature	22.0 C (71.6 F)	36 of 100 (Notable)
Hart Mtn Refuge	United States	Record daily snowfall	8.1 cm (3.2 in)	36 of 100 (Notable)
Newport	United States	Record low maximum temperature	3.9 C (39.0 F)	35 of 100 (Notable)
Phan Thiet	Vietnam	Record daily precipitation	80.5 mm (3.2 in)	35 of 100 (Notable)
Dzhusaly	Kazakhstan	Record high maximum temperature	35.5 C (95.9 F)	34 of 100 (Routine)
Jornada Exp Range	United States	Record high minimum temperature	16.1 C (61.0 F)	34 of 100 (Routine)
Post	United States	Record high minimum temperature	20.6 C (69.1 F)	34 of 100 (Routine)
Rio Gallegos Aero	Argentina	Record high maximum temperature	21.8 C (71.2 F)	33 of 100 (Routine)
Cottbus	Germany	Record low minimum temperature	-3.9 C (25.0 F)	33 of 100 (Routine)
Bad Muskau	Germany	Record low minimum temperature	-4.4 C (24.1 F)	32 of 100 (Routine)
Johan A Pengel Intl	Suriname	Record daily precipitation	89.9 mm (3.5 in)	32 of 100 (Routine)
Panther Junction	United States	Record high minimum temperature	24.4 C (75.9 F)	32 of 100 (Routine)
Dresden-Strehlen	Germany	Record low minimum temperature	-2.5 C (27.5 F)	31 of 100 (Routine)
Misurata	Libya	Record high maximum temperature	40.2 C (104.4 F)	31 of 100 (Routine)
Saragt	Turkmenistan	Record high maximum temperature	39.8 C (103.6 F)	31 of 100 (Routine)
Red Rvr	United States	Record high minimum temperature	8.3 C (46.9 F)	31 of 100 (Routine)
White Sands Natl Mon	United States	Record high minimum temperature	17.8 C (64.0 F)	31 of 100 (Routine)
Deadman Hill	United States	Record daily precipitation	35.6 mm (1.4 in)	31 of 100 (Routine)
Iowa City Muni AP	United States	Record high maximum temperature	30.0 C (86.0 F)	31 of 100 (Routine)
El Centro Naf	United States	Record low minimum temperature	8.3 C (46.9 F)	31 of 100 (Routine)
Yamagata	Japan	Record low minimum temperature	0.5 C (32.9 F)	30 of 100 (Routine)
Niigata	Japan	Record low minimum temperature	2.8 C (37.0 F)	30 of 100 (Routine)
Cirik-Rabat	Kazakhstan	Record high maximum temperature	36.2 C (97.2 F)	30 of 100 (Routine)
Shepetivka	Ukraine	Record low minimum temperature	-1.9 C (28.6 F)	30 of 100 (Routine)
Courtland	United States	Record high maximum temperature	33.9 C (93.0 F)	30 of 100 (Routine)
Gaylord	United States	Record low maximum temperature	2.2 C (36.0 F)	30 of 100 (Routine)
Nukuoro	Federated States of Micronesia	Record daily precipitation	113.0 mm (4.4 in)	29 of 100 (Routine)
Harzgerode	Germany	Record low minimum temperature	-5.4 C (22.3 F)	29 of 100 (Routine)
Chihuahua	Mexico	Record high minimum temperature	19.0 C (66.2 F)	29 of 100 (Routine)
Halmstad Flygflottilj	Sweden	Record low minimum temperature	-4.5 C (23.9 F)	29 of 100 (Routine)
Emmett 2 E	United States	Record low maximum temperature	7.8 C (46.0 F)	29 of 100 (Routine)
Mc Cook	United States	Record high maximum temperature	33.9 C (93.0 F)	29 of 100 (Routine)
Fillmore	United States	Record low maximum temperature	4.4 C (39.9 F)	29 of 100 (Routine)
Washington Is	United States	Record low maximum temperature	3.3 C (37.9 F)	29 of 100 (Routine)
Dachwig	Germany	Record low minimum temperature	-3.6 C (25.5 F)	28 of 100 (Routine)
Szombathely	Hungary	Record low minimum temperature	-1.5 C (29.3 F)	28 of 100 (Routine)
Sholapur	India	Record low minimum temperature	21.1 C (70.0 F)	28 of 100 (Routine)
Malheur Branch Exp STN	United States	Record low maximum temperature	9.4 C (48.9 F)	28 of 100 (Routine)
Narrogin	Australia	Record high maximum temperature	28.6 C (83.5 F)	27 of 100 (Routine)
Thule Op Site	Greenland [Denmark]	Record high minimum temperature	-4.7 C (23.5 F)	27 of 100 (Routine)
Goldberg	Germany	Record low minimum temperature	-2.9 C (26.8 F)	27 of 100 (Routine)
Polonia	Indonesia	Record low maximum temperature	28.4 C (83.1 F)	27 of 100 (Routine)
Hachijojima	Japan	Record low minimum temperature	8.9 C (48.0 F)	27 of 100 (Routine)
Aralskoe More	Kazakhstan	Record high maximum temperature	36.0 C (96.8 F)	27 of 100 (Routine)

Counts by Type and Timescale

450 records

Records set or tied on 27 April 2021 by type: Highest daily maximum 93, Lowest daily maximum 49, Highest daily minimum 89, Lowest daily minimum 119, Heaviest daily rainfall 85, Heaviest daily snowfall 8, Deepest snow cover 7.

Records on 27 April 2021 by type
Record type	Records
Highest daily maximum	93
Lowest daily maximum	49
Highest daily minimum	89
Lowest daily minimum	119
Heaviest daily rainfall	85
Heaviest daily snowfall	8
Deepest snow cover	7

Records on 27 April 2021 by timescale: all-time 0, monthly 13, daily 437.

How Much Records Were Beaten By

370 broken records

Margins by which the 370 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 153.0. Ties are not counted.

Top 20 by Significance

27 April 2021

Top 20 records on 27 April 2021 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 April 2021	Sisian, AM	daily rain	99.1 mm (3.9 in)	79.2 mm (3.1 in)	64 years	67 of 100 (Major)
27 April 2021	McDermitt, US	daily snowfall	7.9 cm (3.1 in)	7.9 cm (3.1 in)	128 years	63 of 100 (Major)
27 April 2021	Akron Washington Co AP, US	monthly rain	71.4 mm (2.8 in)	30.0 mm (1.2 in)	14 years	62 of 100 (Major)
27 April 2021	Cheyenne, US	daily rain	36.1 mm (1.4 in)	16.5 mm (0.6 in)	80 years	60 of 100 (Major)
27 April 2021	Meringa Sugar Exp STN, AU	daily rain	189.0 mm (7.4 in)	111.0 mm (4.4 in)	38 years	59 of 100 (Notable)
27 April 2021	Rotuma, FJ	daily rain	170.0 mm (6.7 in)	82.0 mm (3.2 in)	28 years	52 of 100 (Notable)
27 April 2021	Bear Lake, US	daily rain	43.2 mm (1.7 in)	30.5 mm (1.2 in)	31 years	51 of 100 (Notable)
27 April 2021	Kazalinsk, KZ	monthly high max	36.6 C (97.9 F)	0.4 C (0.7 F)	105 years	50 of 100 (Notable)
27 April 2021	Ketchum Rs, US	daily snowfall	17.8 cm (7.0 in)	15.3 cm (6.0 in)	46 years	45 of 100 (Notable)
27 April 2021	Kaneohe Bay MCAS, US	monthly high min	25.0 C (77.0 F)	0.6 C (1.1 F)	79 years	45 of 100 (Notable)
27 April 2021	Walnut Creek, US	daily rain	26.7 mm (1.1 in)	14.0 mm (0.6 in)	36 years	42 of 100 (Notable)
27 April 2021	Allerton, US	daily high max	28.9 C (84.0 F)	1.7 C (3.1 F)	111 years	42 of 100 (Notable)
27 April 2021	Macau Intl, MO	daily rain	44.5 mm (1.8 in)	28.5 mm (1.1 in)	67 years	41 of 100 (Notable)
27 April 2021	Samburg Wr, US	daily low min	0.0 C (32.0 F)	2.8 C (5.0 F)	90 years	41 of 100 (Notable)
27 April 2021	Charlevoix, US	daily low max	3.9 C (39.0 F)	0.5 C (0.9 F)	127 years	40 of 100 (Notable)
27 April 2021	Dandong, CN	daily rain	27.9 mm (1.1 in)	10.8 mm (0.4 in)	70 years	37 of 100 (Notable)
27 April 2021	Gavar, AM	daily high max	22.0 C (71.6 F)	1.6 C (2.9 F)	82 years	36 of 100 (Notable)
27 April 2021	Hart Mtn Refuge, US	daily snowfall	8.1 cm (3.2 in)	3.0 cm (1.2 in)	72 years	36 of 100 (Notable)
27 April 2021	Newport, US	daily low max	3.9 C (39.0 F)	0.5 C (0.9 F)	88 years	35 of 100 (Notable)
27 April 2021	Phan Thiet, VN	daily rain	80.5 mm (3.2 in)	73.4 mm (2.9 in)	12 years	35 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 450 records.

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

Records on 04-27 in each year
Year	Records
1795	1
1801	1
1802	2
1812	1
1814	1
1817	3
1828	1
1838	1
1841	1
1843	1
1852	1
1853	1
1855	1
1856	1
1857	1
1862	2
1873	2
1874	4
1879	1
1882	2
1884	2
1885	5
1887	1
1888	4
1890	3
1891	1
1892	3
1893	3
1894	7
1895	2
1896	3
1897	4
1899	5
1900	4
1901	3
1903	5
1904	11
1905	16
1906	13
1907	31
1908	27
1909	51
1910	8
1911	37
1912	5
1913	73
1914	19
1915	77
1916	36
1917	47
1918	55
1919	69
1920	44
1921	71
1922	151
1923	110
1924	103
1925	113
1926	287
1927	114
1928	404
1929	71
1930	80
1931	454
1932	331
1933	328
1934	275
1935	227
1936	97
1937	377
1938	467
1939	212
1940	268
1941	361
1942	569
1943	374
1944	214
1945	476
1946	512
1947	373
1948	535
1949	516
1950	617
1951	409
1952	722
1953	651
1954	875
1955	937
1956	685
1957	552
1958	461
1959	470
1960	684
1961	313
1962	741
1963	768
1964	711
1965	568
1966	1,282
1967	733
1968	372
1969	543
1970	1,142
1971	758
1972	645
1973	1,188
1974	926
1975	820
1976	810
1977	801
1978	694
1979	758
1980	706
1981	1,148
1982	685
1983	921
1984	1,754
1985	1,141
1986	1,225
1987	1,482
1988	893
1989	1,320
1990	1,321
1991	1,028
1992	2,163
1993	1,285
1994	1,614
1995	806
1996	1,034
1997	1,588
1998	872
1999	544
2000	1,171
2001	1,138
2002	1,024
2003	840
2004	937
2005	675
2006	705
2007	1,055
2008	1,032
2009	1,299
2010	751
2011	1,291
2012	1,015
2013	568
2014	656
2015	608
2016	755
2017	918
2018	407
2019	626
2020	497
2021	450
2022	567
2023	536
2024	574
2025	659
2026	450

Download the Data

Data for records on 2021-04-27: 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	351
20 to 40	11
40 to 60	1
60 to 80	4
80 to 100	1
100 to 120	1
120 to 140	0
140 to 160	1