Weather Records on 27 August 1971

640 weather records were set or tied worldwide on 27 August 1971. Highest significance: La Plata 1 W, US.

Key Facts for 27 August 1971

On 27 August 1971, 640 weather records were set or tied at long-record stations worldwide.
198 were record highs and 109 were record lows, counting maximum and minimum temperature.
By timescale, 8 were all-time records, 19 monthly and 613 daily.
La Plata 1 W set an all-time record daily precipitation of 248.9 mm (9.8 in) on 27 August 1971.
Across 165 earlier years (1807 to 2026) the same calendar date averaged 436 records.

Record Map

640 stations

640 station records on 27 August 1971 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 27 August 1971: highest significance records shown on the map
Station	Country	Type	Value	Significance
La Plata 1 W	United States	Record daily precipitation	248.9 mm (9.8 in)	77 of 100 (Major)
Baltimore Customs House	United States	Record daily precipitation	105.7 mm (4.2 in)	71 of 100 (Major)
Easton	United States	Record daily precipitation	121.9 mm (4.8 in)	70 of 100 (Major)
Annapolis US Naval Aca	United States	Record daily precipitation	189.2 mm (7.4 in)	67 of 100 (Major)
Hightstown 2 W	United States	Record daily precipitation	181.9 mm (7.2 in)	67 of 100 (Major)
Chestertown	United States	Record daily precipitation	104.1 mm (4.1 in)	65 of 100 (Major)
Coleman 3 WNW	United States	Record daily precipitation	133.4 mm (5.3 in)	65 of 100 (Major)
Mundau	Brazil	Record daily precipitation	40.7 mm (1.6 in)	63 of 100 (Major)
Lahontan Dam	United States	Record daily precipitation	50.8 mm (2.0 in)	60 of 100 (Major)
Doylestown	United States	Record daily precipitation	107.4 mm (4.2 in)	59 of 100 (Notable)
New Milford	United States	Record daily precipitation	101.6 mm (4.0 in)	58 of 100 (Notable)
Woodcliff Lake	United States	Record daily precipitation	100.8 mm (4.0 in)	58 of 100 (Notable)
Washington Wwtp 4W	United States	Record daily precipitation	108.0 mm (4.3 in)	58 of 100 (Notable)
Newark Liberty Intl AP	United States	Record daily precipitation	150.6 mm (5.9 in)	58 of 100 (Notable)
Millington 1 SE	United States	Record daily precipitation	162.6 mm (6.4 in)	57 of 100 (Notable)
Quantico 1 S	United States	Record daily precipitation	111.0 mm (4.4 in)	57 of 100 (Notable)
Plainfield	United States	Record daily precipitation	135.9 mm (5.4 in)	56 of 100 (Notable)
Towson	United States	Record daily precipitation	117.1 mm (4.6 in)	55 of 100 (Notable)
Fredericksburg Np	United States	Record daily precipitation	115.8 mm (4.6 in)	55 of 100 (Notable)
New Bern 3 NW	United States	Record daily precipitation	146.1 mm (5.8 in)	54 of 100 (Notable)
Owings Ferry Landing	United States	Record daily precipitation	106.7 mm (4.2 in)	53 of 100 (Notable)
Ephrata	United States	Record daily precipitation	68.1 mm (2.7 in)	53 of 100 (Notable)
Temple	United States	Record daily precipitation	62.7 mm (2.5 in)	53 of 100 (Notable)
Woodstown Pittsgrov 4E	United States	Record daily precipitation	125.2 mm (4.9 in)	51 of 100 (Notable)
Westfield 2 SSE	United States	Record daily precipitation	58.7 mm (2.3 in)	51 of 100 (Notable)
Reading Wb City	United States	Record daily precipitation	72.6 mm (2.9 in)	51 of 100 (Notable)
Indian Mills 2 W	United States	Record daily precipitation	109.0 mm (4.3 in)	50 of 100 (Notable)
Neshaminy Falls	United States	Record daily precipitation	174.0 mm (6.9 in)	50 of 100 (Notable)
De Vlei "de Kruis"	South Africa	Record daily precipitation	49.5 mm (1.9 in)	49 of 100 (Notable)
Ponte Alta 1	Brazil	Record daily precipitation	81.8 mm (3.2 in)	48 of 100 (Notable)
Roebling	United States	Record daily precipitation	86.4 mm (3.4 in)	48 of 100 (Notable)
Little Falls City Rsch	United States	Record daily precipitation	50.8 mm (2.0 in)	48 of 100 (Notable)
Paterson	United States	Record daily precipitation	117.3 mm (4.6 in)	47 of 100 (Notable)
Marcus Hook	United States	Record daily precipitation	136.4 mm (5.4 in)	46 of 100 (Notable)
Vienna	United States	Record daily precipitation	81.5 mm (3.2 in)	46 of 100 (Notable)
Aberdeen Phillips Fld	United States	Record daily precipitation	131.3 mm (5.2 in)	46 of 100 (Notable)
Trenton	United States	Record daily precipitation	121.7 mm (4.8 in)	46 of 100 (Notable)
New Park	United States	Record daily precipitation	105.2 mm (4.1 in)	45 of 100 (Notable)
Langley AFB	United States	Record daily precipitation	87.1 mm (3.4 in)	45 of 100 (Notable)
Baltimore-Washington Intl AP	United States	Record daily precipitation	102.6 mm (4.0 in)	44 of 100 (Notable)
Pemberton	United States	Record daily precipitation	182.9 mm (7.2 in)	43 of 100 (Notable)
W Pt	United States	Record daily precipitation	68.1 mm (2.7 in)	42 of 100 (Notable)
Laguardia AP	United States	Record daily precipitation	120.1 mm (4.7 in)	42 of 100 (Notable)
Harrisburg Capital City AP	United States	Record daily precipitation	61.0 mm (2.4 in)	42 of 100 (Notable)
Ny City Cntrl Park	United States	Record daily precipitation	105.7 mm (4.2 in)	42 of 100 (Notable)
Macknade Sugar Mill	Australia	Record daily precipitation	31.5 mm (1.2 in)	41 of 100 (Notable)
Wadesboro	United States	Record daily precipitation	66.5 mm (2.6 in)	41 of 100 (Notable)
Homestead	Australia	Record daily precipitation	27.9 mm (1.1 in)	40 of 100 (Notable)
Brucefield	Canada	Record daily precipitation	36.8 mm (1.4 in)	40 of 100 (Notable)
Belfast	United States	Record low minimum temperature	2.8 C (37.0 F)	40 of 100 (Notable)
Rockport 1 ESE	United States	Record daily precipitation	48.3 mm (1.9 in)	40 of 100 (Notable)
Belleplain STN Forest	United States	Record daily precipitation	133.9 mm (5.3 in)	40 of 100 (Notable)
Washington Reagan Natl AP	United States	Record daily precipitation	96.3 mm (3.8 in)	40 of 100 (Notable)
Glenn Dale Bell STN	United States	Record daily precipitation	120.1 mm (4.7 in)	39 of 100 (Notable)
Rahway	United States	Record daily precipitation	167.1 mm (6.6 in)	39 of 100 (Notable)
Rutland	United States	Record daily precipitation	53.3 mm (2.1 in)	39 of 100 (Notable)
New Canton	United States	Record daily precipitation	67.1 mm (2.6 in)	39 of 100 (Notable)
Gospic	Croatia	Record high minimum temperature	16.6 C (61.9 F)	38 of 100 (Notable)
Graham 2 ENE	United States	Record daily precipitation	47.0 mm (1.9 in)	38 of 100 (Notable)
Newark Ag Farm	United States	Record daily precipitation	120.7 mm (4.8 in)	37 of 100 (Notable)

Counts by Type and Timescale

640 records

Records set or tied on 27 August 1971 by type: Highest daily maximum 115, Lowest daily maximum 22, Highest daily minimum 83, Lowest daily minimum 87, Heaviest daily rainfall 333.

Records on 27 August 1971 by type
Record type	Records
Highest daily maximum	115
Lowest daily maximum	22
Highest daily minimum	83
Lowest daily minimum	87
Heaviest daily rainfall	333
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 27 August 1971 by timescale: all-time 8, monthly 19, daily 613.

How Much Records Were Beaten By

526 broken records

Margins by which the 526 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 143.5. Ties are not counted.

Top 20 by Significance

27 August 1971

Top 20 records on 27 August 1971 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 August 1971	La Plata 1 W, US	all-time rain	248.9 mm (9.8 in)	98.5 mm (3.9 in)	35 years	77 of 100 (Major)
27 August 1971	Baltimore Customs House, US	daily rain	105.7 mm (4.2 in)	55.2 mm (2.2 in)	88 years	71 of 100 (Major)
27 August 1971	Easton, US	daily rain	121.9 mm (4.8 in)	85.8 mm (3.4 in)	76 years	70 of 100 (Major)
27 August 1971	Annapolis US Naval Aca, US	daily rain	189.2 mm (7.4 in)	143.5 mm (5.6 in)	68 years	67 of 100 (Major)
27 August 1971	Hightstown 2 W, US	all-time rain	181.9 mm (7.2 in)	30.5 mm (1.2 in)	67 years	67 of 100 (Major)
27 August 1971	Chestertown, US	daily rain	104.1 mm (4.1 in)	71.8 mm (2.8 in)	60 years	65 of 100 (Major)
27 August 1971	Coleman 3 WNW, US	daily rain	133.4 mm (5.3 in)	91.5 mm (3.6 in)	60 years	65 of 100 (Major)
27 August 1971	Mundau, BR	daily rain	40.7 mm (1.6 in)	35.4 mm (1.4 in)	58 years	63 of 100 (Major)
27 August 1971	Lahontan Dam, US	daily rain	50.8 mm (2.0 in)	41.4 mm (1.6 in)	48 years	60 of 100 (Major)
27 August 1971	Doylestown, US	daily rain	107.4 mm (4.2 in)	66.8 mm (2.6 in)	44 years	59 of 100 (Notable)
27 August 1971	New Milford, US	daily rain	101.6 mm (4.0 in)	71.6 mm (2.8 in)	44 years	58 of 100 (Notable)
27 August 1971	Woodcliff Lake, US	daily rain	100.8 mm (4.0 in)	74.9 mm (2.9 in)	44 years	58 of 100 (Notable)
27 August 1971	Washington Wwtp 4W, US	daily rain	108.0 mm (4.3 in)	59.0 mm (2.3 in)	48 years	58 of 100 (Notable)
27 August 1971	Newark Liberty Intl AP, US	daily rain	150.6 mm (5.9 in)	112.2 mm (4.4 in)	28 years	58 of 100 (Notable)
27 August 1971	Millington 1 SE, US	daily rain	162.6 mm (6.4 in)	130.1 mm (5.1 in)	33 years	57 of 100 (Notable)
27 August 1971	Quantico 1 S, US	daily rain	111.0 mm (4.4 in)	79.8 mm (3.1 in)	34 years	57 of 100 (Notable)
27 August 1971	Plainfield, US	daily rain	135.9 mm (5.4 in)	96.5 mm (3.8 in)	28 years	56 of 100 (Notable)
27 August 1971	Towson, US	daily rain	117.1 mm (4.6 in)	94.7 mm (3.7 in)	30 years	55 of 100 (Notable)
27 August 1971	Fredericksburg Np, US	daily rain	115.8 mm (4.6 in)	89.1 mm (3.5 in)	29 years	55 of 100 (Notable)
27 August 1971	New Bern 3 NW, US	daily rain	146.1 mm (5.8 in)	54.2 mm (2.1 in)	62 years	54 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 1971

Records set or tied on this calendar date in each year from 1807 to 1971. 1971 had 640 records.

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

Records on 08-27 in each year
Year	Records
1807	3
1810	1
1811	1
1813	1
1816	1
1827	1
1829	1
1834	1
1846	1
1847	1
1848	1
1854	1
1857	1
1858	1
1859	1
1863	1
1864	3
1865	2
1869	1
1870	1
1871	1
1874	1
1876	1
1877	4
1880	1
1881	2
1882	1
1884	3
1885	2
1886	2
1887	2
1889	1
1890	10
1891	4
1892	1
1894	7
1895	1
1896	4
1899	5
1900	5
1901	6
1902	2
1903	22
1904	4
1905	16
1906	27
1907	9
1908	10
1909	10
1910	6
1911	16
1912	40
1913	10
1914	31
1915	37
1916	106
1917	57
1918	18
1919	78
1920	36
1921	27
1922	52
1923	63
1924	245
1925	102
1926	143
1927	395
1928	197
1929	80
1930	247
1931	205
1932	355
1933	368
1934	249
1935	348
1936	806
1937	679
1938	374
1939	191
1940	468
1941	504
1942	476
1943	581
1944	811
1945	414
1946	345
1947	291
1948	987
1949	475
1950	380
1951	415
1952	402
1953	712
1954	594
1955	485
1956	387
1957	615
1958	213
1959	522
1960	365
1961	365
1962	577
1963	335
1964	400
1965	440
1966	406
1967	887
1968	517
1969	780
1970	1,361
1971	640
1972	722
1973	1,519
1974	722
1975	506
1976	565
1977	793
1978	671
1979	917
1980	478
1981	998
1982	828
1983	823
1984	683
1985	660
1986	1,072
1987	1,356
1988	601
1989	854
1990	761
1991	813
1992	1,657
1993	1,087
1994	696
1995	1,143
1996	968
1997	1,189
1998	1,387
1999	1,258
2000	865
2001	1,304
2002	1,027
2003	916
2004	1,037
2005	733
2006	1,090
2007	958
2008	885
2009	701
2010	1,045
2011	1,518
2012	626
2013	629
2014	582
2015	832
2016	968
2017	838
2018	933
2019	1,013
2020	777
2021	635
2022	470
2023	953
2024	600
2025	1,218
2026	815

Download the Data

Data for records on 1971-08-27: 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	447
20 to 40	39
40 to 60	13
60 to 80	13
80 to 100	11
100 to 120	1
120 to 140	1
140 to 160	1