Weather Records on 17 August 1971

447 weather records were set or tied worldwide on 17 August 1971. Highest significance: Beaufort Wwtp, US.

Key Facts for 17 August 1971

On 17 August 1971, 447 weather records were set or tied at long-record stations worldwide.
131 were record highs and 209 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 5 monthly and 440 daily.
Beaufort Wwtp set a daily record precipitation of 259.1 mm (10.2 in) on 17 August 1971.
Across 162 earlier years (1797 to 2026) the same calendar date averaged 474 records.

Record Map

447 stations

447 station records on 17 August 1971 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 August 1971: highest significance records shown on the map
Station	Country	Type	Value	Significance
Beaufort Wwtp	United States	Record daily precipitation	259.1 mm (10.2 in)	68 of 100 (Major)
Georgetown 2 E	United States	Record daily precipitation	108.7 mm (4.3 in)	63 of 100 (Major)
Maddock	United States	Record daily precipitation	64.0 mm (2.5 in)	58 of 100 (Notable)
Rimini 2 SSW	United States	Record daily precipitation	88.9 mm (3.5 in)	53 of 100 (Notable)
Doctortown 1 WSW	United States	Record daily precipitation	102.9 mm (4.1 in)	51 of 100 (Notable)
Yemassee 1 N	United States	Record daily precipitation	122.4 mm (4.8 in)	50 of 100 (Notable)
Summerville 4W	United States	Record daily precipitation	90.2 mm (3.6 in)	47 of 100 (Notable)
Inverness 3 SE	United States	Record low maximum temperature	25.0 C (77.0 F)	46 of 100 (Notable)
Muleshoe #1	United States	Record daily precipitation	54.9 mm (2.2 in)	46 of 100 (Notable)
Waynesboro 2 S	United States	Record daily precipitation	86.4 mm (3.4 in)	43 of 100 (Notable)
Edgefield 3 NNE	United States	Record daily precipitation	104.6 mm (4.1 in)	42 of 100 (Notable)
Pierce 1 E	United States	Record low minimum temperature	16.1 C (61.0 F)	40 of 100 (Notable)
Mt Vernon	United States	Record daily precipitation	52.3 mm (2.1 in)	39 of 100 (Notable)
Laurens	United States	Record low maximum temperature	21.7 C (71.1 F)	39 of 100 (Notable)
Pogranichnyj	Russia	Record low minimum temperature	7.0 C (44.6 F)	38 of 100 (Notable)
Hendersonville 1 NE	United States	Record low maximum temperature	20.0 C (68.0 F)	37 of 100 (Notable)
Glen St Mary 1 W	United States	Record daily precipitation	73.7 mm (2.9 in)	36 of 100 (Notable)
Canyon	United States	Record daily precipitation	56.1 mm (2.2 in)	36 of 100 (Notable)
Elberton 2 N	United States	Record low maximum temperature	24.4 C (75.9 F)	35 of 100 (Notable)
Kingstree	United States	Record daily precipitation	95.3 mm (3.8 in)	35 of 100 (Notable)
Isabela Substn	Puerto Rico [United States]	Record low maximum temperature	28.3 C (82.9 F)	34 of 100 (Routine)
Minot Exp STN	United States	Record daily precipitation	33.0 mm (1.3 in)	34 of 100 (Routine)
Dillon	United States	Record daily precipitation	77.7 mm (3.1 in)	34 of 100 (Routine)
Effingham	United States	Record daily precipitation	53.6 mm (2.1 in)	34 of 100 (Routine)
De Bilt	Netherlands	Record low minimum temperature	4.6 C (40.3 F)	33 of 100 (Routine)
Togul	Russia	Record daily precipitation	53.0 mm (2.1 in)	33 of 100 (Routine)
Barstow	United States	Record high minimum temperature	25.6 C (78.1 F)	33 of 100 (Routine)
Aleksandrovsk-Sahalinskij	Russia	Record low minimum temperature	3.6 C (38.5 F)	32 of 100 (Routine)
Monticello	United States	Record daily precipitation	97.8 mm (3.9 in)	32 of 100 (Routine)
Adams	United States	Record low minimum temperature	5.6 C (42.1 F)	32 of 100 (Routine)
Walterboro 1 SW	United States	Record low maximum temperature	27.8 C (82.0 F)	32 of 100 (Routine)
Sovetskaja Gavan	Russia	Record low minimum temperature	5.4 C (41.7 F)	31 of 100 (Routine)
Experiment	United States	Record daily precipitation	49.3 mm (1.9 in)	31 of 100 (Routine)
Monroe 2 SE	United States	Record low maximum temperature	22.2 C (72.0 F)	31 of 100 (Routine)
Salisbury	United States	Record low maximum temperature	21.7 C (71.1 F)	31 of 100 (Routine)
Forman 5 SSE	United States	Record high maximum temperature	39.4 C (102.9 F)	31 of 100 (Routine)
Kenton	United States	Record low minimum temperature	7.8 C (46.0 F)	31 of 100 (Routine)
Newberry	United States	Record low maximum temperature	22.2 C (72.0 F)	31 of 100 (Routine)
Van Wert 1 S	United States	Record low minimum temperature	9.4 C (48.9 F)	30 of 100 (Routine)
Blackville 3 W	United States	Record daily precipitation	86.6 mm (3.4 in)	30 of 100 (Routine)
Santuck	United States	Record low maximum temperature	21.7 C (71.1 F)	30 of 100 (Routine)
Walterboro 1 SW	United States	Record daily precipitation	66.0 mm (2.6 in)	30 of 100 (Routine)
Charleston Intl AP	United States	Record daily precipitation	83.8 mm (3.3 in)	30 of 100 (Routine)
Walnut Grove	United States	Record daily precipitation	31.8 mm (1.3 in)	29 of 100 (Routine)
Dover	United States	Record daily precipitation	56.4 mm (2.2 in)	29 of 100 (Routine)
Saluda	United States	Record low maximum temperature	22.8 C (73.0 F)	29 of 100 (Routine)
Aberdeen	United States	Record high maximum temperature	39.4 C (102.9 F)	29 of 100 (Routine)
Rockville 1 NE	United States	Record low minimum temperature	12.2 C (54.0 F)	28 of 100 (Routine)
Banner Elk	United States	Record low maximum temperature	18.3 C (64.9 F)	28 of 100 (Routine)
Norwalk Wwtp	United States	Record low minimum temperature	6.1 C (43.0 F)	28 of 100 (Routine)
Marion	United States	Record daily precipitation	57.2 mm (2.3 in)	28 of 100 (Routine)
Ely AP	United States	Record high minimum temperature	13.3 C (55.9 F)	28 of 100 (Routine)
Lake City 2 E	United States	Record low maximum temperature	23.9 C (75.0 F)	27 of 100 (Routine)
Wibaux 2 E	United States	Record high minimum temperature	21.1 C (70.0 F)	27 of 100 (Routine)
Westhope	United States	Record daily precipitation	36.3 mm (1.4 in)	27 of 100 (Routine)
Anderson	United States	Record low maximum temperature	23.3 C (73.9 F)	27 of 100 (Routine)
Fredericksburg	United States	Record low minimum temperature	17.2 C (63.0 F)	27 of 100 (Routine)
Huron Rgnl AP	United States	Record high minimum temperature	22.8 C (73.0 F)	27 of 100 (Routine)
Balkasino	Kazakhstan	Record daily precipitation	26.5 mm (1.0 in)	26 of 100 (Routine)
Zolotoj	Russia	Record low minimum temperature	7.9 C (46.2 F)	26 of 100 (Routine)

Counts by Type and Timescale

447 records

Records set or tied on 17 August 1971 by type: Highest daily maximum 51, Lowest daily maximum 87, Highest daily minimum 80, Lowest daily minimum 122, Heaviest daily rainfall 107.

Records on 17 August 1971 by type
Record type	Records
Highest daily maximum	51
Lowest daily maximum	87
Highest daily minimum	80
Lowest daily minimum	122
Heaviest daily rainfall	107
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 17 August 1971 by timescale: all-time 2, monthly 5, daily 440.

How Much Records Were Beaten By

338 broken records

Margins by which the 338 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 227.6. Ties are not counted.

Top 20 by Significance

17 August 1971

Top 20 records on 17 August 1971 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 August 1971	Beaufort Wwtp, US	daily rain	259.1 mm (10.2 in)	227.6 mm (9.0 in)	72 years	68 of 100 (Major)
17 August 1971	Georgetown 2 E, US	daily rain	108.7 mm (4.3 in)	64.2 mm (2.5 in)	74 years	63 of 100 (Major)
17 August 1971	Maddock, US	daily rain	64.0 mm (2.5 in)	49.3 mm (1.9 in)	44 years	58 of 100 (Notable)
17 August 1971	Rimini 2 SSW, US	daily rain	88.9 mm (3.5 in)	53.3 mm (2.1 in)	56 years	53 of 100 (Notable)
17 August 1971	Doctortown 1 WSW, US	daily rain	102.9 mm (4.1 in)	68.1 mm (2.7 in)	29 years	51 of 100 (Notable)
17 August 1971	Yemassee 1 N, US	daily rain	122.4 mm (4.8 in)	55.1 mm (2.2 in)	58 years	50 of 100 (Notable)
17 August 1971	Summerville 4W, US	daily rain	90.2 mm (3.6 in)	40.4 mm (1.6 in)	64 years	47 of 100 (Notable)
17 August 1971	Inverness 3 SE, US	daily low max	25.0 C (77.0 F)	4.4 C (7.9 F)	57 years	46 of 100 (Notable)
17 August 1971	Muleshoe #1, US	daily rain	54.9 mm (2.2 in)	32.3 mm (1.3 in)	30 years	46 of 100 (Notable)
17 August 1971	Waynesboro 2 S, US	daily rain	86.4 mm (3.4 in)	35.6 mm (1.4 in)	56 years	43 of 100 (Notable)
17 August 1971	Edgefield 3 NNE, US	daily rain	104.6 mm (4.1 in)	53.8 mm (2.1 in)	21 years	42 of 100 (Notable)
17 August 1971	Pierce 1 E, US	daily low min	16.1 C (61.0 F)	3.3 C (5.9 F)	40 years	40 of 100 (Notable)
17 August 1971	Mt Vernon, US	daily rain	52.3 mm (2.1 in)	42.4 mm (1.7 in)	22 years	39 of 100 (Notable)
17 August 1971	Laurens, US	daily low max	21.7 C (71.1 F)	4.4 C (7.9 F)	65 years	39 of 100 (Notable)
17 August 1971	Pogranichnyj, RU	daily low min	7.0 C (44.6 F)	4.0 C (7.2 F)	57 years	38 of 100 (Notable)
17 August 1971	Hendersonville 1 NE, US	daily low max	20.0 C (68.0 F)	3.3 C (5.9 F)	65 years	37 of 100 (Notable)
17 August 1971	Glen St Mary 1 W, US	daily rain	73.7 mm (2.9 in)	42.5 mm (1.7 in)	25 years	36 of 100 (Notable)
17 August 1971	Canyon, US	daily rain	56.1 mm (2.2 in)	39.1 mm (1.5 in)	26 years	36 of 100 (Notable)
17 August 1971	Elberton 2 N, US	daily low max	24.4 C (75.9 F)	1.7 C (3.1 F)	73 years	35 of 100 (Notable)
17 August 1971	Kingstree, US	daily rain	95.3 mm (3.8 in)	34.3 mm (1.4 in)	32 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

1797 to 1971

Records set or tied on this calendar date in each year from 1797 to 1971. 1971 had 447 records.

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

Records on 08-17 in each year
Year	Records
1797	2
1802	2
1820	2
1837	1
1838	2
1841	2
1842	1
1845	2
1853	1
1854	1
1856	1
1857	1
1861	3
1862	1
1867	1
1868	3
1869	1
1872	1
1875	2
1876	5
1879	1
1881	1
1882	1
1883	2
1885	3
1886	1
1888	5
1891	1
1892	3
1893	2
1894	3
1895	2
1896	3
1897	1
1898	5
1899	8
1900	3
1901	14
1902	7
1903	6
1904	2
1905	11
1906	28
1907	9
1908	26
1909	24
1910	17
1911	18
1912	31
1913	79
1914	41
1915	28
1916	33
1917	35
1918	112
1919	37
1920	110
1921	37
1922	169
1923	161
1924	171
1925	130
1926	182
1927	228
1928	131
1929	243
1930	138
1931	302
1932	360
1933	260
1934	377
1935	437
1936	670
1937	726
1938	466
1939	364
1940	341
1941	378
1942	461
1943	743
1944	531
1945	387
1946	433
1947	682
1948	475
1949	371
1950	522
1951	413
1952	470
1953	345
1954	685
1955	465
1956	407
1957	504
1958	519
1959	543
1960	533
1961	998
1962	445
1963	650
1964	410
1965	641
1966	496
1967	679
1968	953
1969	593
1970	467
1971	447
1972	1,044
1973	750
1974	582
1975	612
1976	797
1977	1,216
1978	814
1979	1,464
1980	895
1981	1,112
1982	554
1983	1,574
1984	726
1985	948
1986	916
1987	1,150
1988	1,608
1989	687
1990	949
1991	560
1992	1,813
1993	803
1994	1,038
1995	1,724
1996	752
1997	1,544
1998	1,003
1999	697
2000	994
2001	1,101
2002	1,266
2003	948
2004	1,046
2005	722
2006	814
2007	1,646
2008	1,301
2009	922
2010	1,105
2011	956
2012	1,215
2013	802
2014	997
2015	890
2016	748
2017	544
2018	518
2019	467
2020	1,529
2021	800
2022	1,428
2023	1,032
2024	740
2025	538
2026	535

Download the Data

Data for records on 1971-08-17: 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 50	332
50 to 100	5
100 to 150	0
150 to 200	0
200 to 250	1