Weather Records on 11 August 1971

711 weather records were set or tied worldwide on 11 August 1971. Highest significance: Jal, US.

Key Facts for 11 August 1971

On 11 August 1971, 711 weather records were set or tied at long-record stations worldwide.
386 were record highs and 130 were record lows, counting maximum and minimum temperature.
By timescale, 6 were all-time records, 31 monthly and 674 daily.
Jal set a daily record precipitation of 85.9 mm (3.4 in) on 11 August 1971.
Across 161 earlier years (1793 to 2026) the same calendar date averaged 459 records.

Record Map

711 stations

711 station records on 11 August 1971 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 11 August 1971: highest significance records shown on the map
Station	Country	Type	Value	Significance
Jal	United States	Record daily precipitation	85.9 mm (3.4 in)	60 of 100 (Major)
Tulun	Russia	Record daily precipitation	46.9 mm (1.8 in)	53 of 100 (Notable)
Redding Fire STN 2	United States	Record high minimum temperature	30.6 C (87.1 F)	43 of 100 (Notable)
Cumming 2N	United States	Record daily precipitation	47.8 mm (1.9 in)	42 of 100 (Notable)
Norfolk 2 SW	United States	Record high minimum temperature	21.1 C (70.0 F)	40 of 100 (Notable)
Avon Park 2 W	United States	Record low minimum temperature	18.9 C (66.0 F)	37 of 100 (Notable)
Chestertown	United States	Record daily precipitation	49.3 mm (1.9 in)	37 of 100 (Notable)
Oakey Post Office	Australia	Record daily precipitation	49.3 mm (1.9 in)	36 of 100 (Notable)
Rosedale	United States	Record daily precipitation	49.5 mm (1.9 in)	35 of 100 (Notable)
Lancaster	United States	Record daily precipitation	31.0 mm (1.2 in)	35 of 100 (Notable)
Nanaimo Departure Bay	Canada	Record high minimum temperature	22.2 C (72.0 F)	34 of 100 (Routine)
Den Helder-1	Netherlands	Record daily precipitation	32.0 mm (1.3 in)	34 of 100 (Routine)
Pierce 1 E	United States	Record low minimum temperature	16.7 C (62.1 F)	34 of 100 (Routine)
Atlantic City Marina	United States	Record daily precipitation	73.7 mm (2.9 in)	34 of 100 (Routine)
Oceanside Marina	United States	Record high minimum temperature	21.7 C (71.1 F)	33 of 100 (Routine)
Socorro	United States	Record low maximum temperature	26.1 C (79.0 F)	33 of 100 (Routine)
Lakeview 2 NNW	United States	Record high minimum temperature	18.9 C (66.0 F)	33 of 100 (Routine)
Colorado City	United States	Record low maximum temperature	25.0 C (77.0 F)	33 of 100 (Routine)
Junction 4SSW	United States	Record daily precipitation	41.9 mm (1.6 in)	33 of 100 (Routine)
Zacatecas (Smn)	Mexico	Record daily precipitation	34.8 mm (1.4 in)	32 of 100 (Routine)
Basel Binningen	Switzerland	Record daily precipitation	41.7 mm (1.6 in)	32 of 100 (Routine)
Feodosiia	Ukraine	Record high maximum temperature	34.9 C (94.8 F)	32 of 100 (Routine)
Ukiah	United States	Record high minimum temperature	18.9 C (66.0 F)	32 of 100 (Routine)
Ft Sumner	United States	Record daily precipitation	47.8 mm (1.9 in)	32 of 100 (Routine)
Oberstdorf	Germany	Record daily precipitation	48.3 mm (1.9 in)	31 of 100 (Routine)
Mittenwald-Buckelwiesen	Germany	Record daily precipitation	60.4 mm (2.4 in)	31 of 100 (Routine)
Irapuato	Mexico	Record daily precipitation	43.4 mm (1.7 in)	31 of 100 (Routine)
Potter Valley Powerhouse	United States	Record high maximum temperature	45.0 C (113.0 F)	31 of 100 (Routine)
Towanda 1 S	United States	Record high minimum temperature	22.2 C (72.0 F)	31 of 100 (Routine)
Brady	United States	Record low maximum temperature	31.1 C (88.0 F)	31 of 100 (Routine)
Waterville	United States	Record high maximum temperature	38.3 C (100.9 F)	31 of 100 (Routine)
San Juan de Los Llanos	Mexico	Record daily precipitation	54.9 mm (2.2 in)	30 of 100 (Routine)
Boras	Sweden	Record daily precipitation	37.1 mm (1.5 in)	30 of 100 (Routine)
St Augustine	United States	Record low minimum temperature	18.3 C (64.9 F)	30 of 100 (Routine)
Harrison 1 NNW	United States	Record daily precipitation	26.2 mm (1.0 in)	30 of 100 (Routine)
Arlington	United States	Record high maximum temperature	42.8 C (109.0 F)	30 of 100 (Routine)
Prospect 2 SW	United States	Record high maximum temperature	41.1 C (106.0 F)	30 of 100 (Routine)
Coldwater	United States	Record daily precipitation	35.1 mm (1.4 in)	30 of 100 (Routine)
Marathon	United States	Record low maximum temperature	27.2 C (81.0 F)	30 of 100 (Routine)
Spokane Intl AP	United States	Record high maximum temperature	38.3 C (100.9 F)	30 of 100 (Routine)
Banff	Canada	Record high maximum temperature	31.1 C (88.0 F)	29 of 100 (Routine)
Santa Cruz Juventino Rosas (S	Mexico	Record daily precipitation	51.8 mm (2.0 in)	29 of 100 (Routine)
Merced	United States	Record high minimum temperature	23.3 C (73.9 F)	29 of 100 (Routine)
Taylorsville	United States	Record daily precipitation	61.5 mm (2.4 in)	29 of 100 (Routine)
Uvalde	United States	Record low maximum temperature	28.3 C (82.9 F)	29 of 100 (Routine)
Aberdeen Phillips Fld	United States	Record daily precipitation	39.9 mm (1.6 in)	29 of 100 (Routine)
Martinsburg E W Virginia Rgnl	United States	Record daily precipitation	59.9 mm (2.4 in)	29 of 100 (Routine)
Tewantin Post Office	Australia	Record high minimum temperature	16.2 C (61.2 F)	28 of 100 (Routine)
Kamloops	Canada	Record high maximum temperature	38.3 C (100.9 F)	28 of 100 (Routine)
Ranfurly	Canada	Record high minimum temperature	15.0 C (59.0 F)	28 of 100 (Routine)
Tanguj	Russia	Record daily precipitation	34.8 mm (1.4 in)	28 of 100 (Routine)
Willows 6 W	United States	Record high maximum temperature	45.6 C (114.1 F)	28 of 100 (Routine)
Deland 1 SSE	United States	Record low minimum temperature	18.9 C (66.0 F)	28 of 100 (Routine)
Cornelia	United States	Record daily precipitation	58.9 mm (2.3 in)	28 of 100 (Routine)
Heppner	United States	Record high maximum temperature	38.3 C (100.9 F)	28 of 100 (Routine)
Klamath Falls 2 SSW	United States	Record high maximum temperature	37.2 C (99.0 F)	28 of 100 (Routine)
Nogales	United States	Record low maximum temperature	26.1 C (79.0 F)	27 of 100 (Routine)
Moscow U of I	United States	Record high maximum temperature	36.7 C (98.1 F)	27 of 100 (Routine)
La Crescent Dam 7	United States	Record daily precipitation	43.2 mm (1.7 in)	27 of 100 (Routine)
Cortland	United States	Record high minimum temperature	21.7 C (71.1 F)	27 of 100 (Routine)

Counts by Type and Timescale

711 records

Records set or tied on 11 August 1971 by type: Highest daily maximum 217, Lowest daily maximum 72, Highest daily minimum 169, Lowest daily minimum 58, Heaviest daily rainfall 195.

Records on 11 August 1971 by type
Record type	Records
Highest daily maximum	217
Lowest daily maximum	72
Highest daily minimum	169
Lowest daily minimum	58
Heaviest daily rainfall	195
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 11 August 1971 by timescale: all-time 6, monthly 31, daily 674.

How Much Records Were Beaten By

516 broken records

Margins by which the 516 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 77.0. Ties are not counted.

Top 20 by Significance

11 August 1971

Top 20 records on 11 August 1971 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 August 1971	Jal, US	daily rain	85.9 mm (3.4 in)	77.0 mm (3.0 in)	50 years	60 of 100 (Major)
11 August 1971	Tulun, RU	daily rain	46.9 mm (1.8 in)	36.6 mm (1.4 in)	33 years	53 of 100 (Notable)
11 August 1971	Redding Fire STN 2, US	all-time high min	30.6 C (87.1 F)	0.6 C (1.1 F)	50 years	43 of 100 (Notable)
11 August 1971	Cumming 2N, US	daily rain	47.8 mm (1.9 in)	39.2 mm (1.5 in)	28 years	42 of 100 (Notable)
11 August 1971	Norfolk 2 SW, US	daily high min	21.1 C (70.0 F)	2.8 C (5.0 F)	85 years	40 of 100 (Notable)
11 August 1971	Avon Park 2 W, US	daily low min	18.9 C (66.0 F)	1.7 C (3.1 F)	52 years	37 of 100 (Notable)
11 August 1971	Chestertown, US	daily rain	49.3 mm (1.9 in)	21.4 mm (0.8 in)	57 years	37 of 100 (Notable)
11 August 1971	Oakey Post Office, AU	daily rain	49.3 mm (1.9 in)	16.3 mm (0.6 in)	36 years	36 of 100 (Notable)
11 August 1971	Rosedale, US	daily rain	49.5 mm (1.9 in)	27.7 mm (1.1 in)	37 years	35 of 100 (Notable)
11 August 1971	Lancaster, US	daily rain	31.0 mm (1.2 in)	20.1 mm (0.8 in)	21 years	35 of 100 (Notable)
11 August 1971	Nanaimo Departure Bay, CA	monthly high min	22.2 C (72.0 F)	1.1 C (2.0 F)	50 years	34 of 100 (Routine)
11 August 1971	Den Helder-1, NL	daily rain	32.0 mm (1.3 in)	12.5 mm (0.5 in)	16 years	34 of 100 (Routine)
11 August 1971	Pierce 1 E, US	daily low min	16.7 C (62.1 F)	2.2 C (4.0 F)	48 years	34 of 100 (Routine)
11 August 1971	Atlantic City Marina, US	daily rain	73.7 mm (2.9 in)	28.2 mm (1.1 in)	42 years	34 of 100 (Routine)
11 August 1971	Oceanside Marina, US	monthly high min	21.7 C (71.1 F)	0.6 C (1.1 F)	53 years	33 of 100 (Routine)
11 August 1971	Socorro, US	daily low max	26.1 C (79.0 F)	2.2 C (4.0 F)	64 years	33 of 100 (Routine)
11 August 1971	Lakeview 2 NNW, US	daily high min	18.9 C (66.0 F)	1.7 C (3.1 F)	72 years	33 of 100 (Routine)
11 August 1971	Colorado City, US	daily low max	25.0 C (77.0 F)	2.2 C (4.0 F)	64 years	33 of 100 (Routine)
11 August 1971	Junction 4SSW, US	daily rain	41.9 mm (1.6 in)	15.2 mm (0.6 in)	56 years	33 of 100 (Routine)
11 August 1971	Zacatecas (Smn), MX	daily rain	34.8 mm (1.4 in)	23.4 mm (0.9 in)	12 years	32 of 100 (Routine)

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

1793 to 1971

Records set or tied on this calendar date in each year from 1793 to 1971. 1971 had 711 records.

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

Records on 08-11 in each year
Year	Records
1793	1
1796	1
1811	1
1815	2
1838	1
1839	1
1841	1
1851	1
1855	1
1858	1
1861	2
1862	1
1863	1
1864	6
1865	1
1866	6
1869	4
1871	1
1875	1
1879	2
1881	1
1883	1
1885	1
1888	1
1889	4
1890	4
1891	1
1892	4
1893	1
1894	1
1895	2
1896	5
1897	3
1898	2
1899	3
1900	4
1901	4
1902	13
1903	12
1904	19
1905	9
1906	6
1907	8
1908	10
1909	41
1910	9
1911	24
1912	46
1913	43
1914	26
1915	27
1916	64
1917	217
1918	29
1919	18
1920	54
1921	201
1922	98
1923	80
1924	149
1925	219
1926	140
1927	190
1928	174
1929	354
1930	471
1931	453
1932	281
1933	416
1934	620
1935	499
1936	541
1937	356
1938	315
1939	389
1940	359
1941	807
1942	390
1943	345
1944	936
1945	401
1946	419
1947	709
1948	306
1949	471
1950	320
1951	296
1952	417
1953	283
1954	536
1955	319
1956	457
1957	305
1958	494
1959	337
1960	461
1961	429
1962	662
1963	493
1964	677
1965	793
1966	1,037
1967	1,071
1968	619
1969	533
1970	526
1971	711
1972	823
1973	451
1974	596
1975	753
1976	529
1977	845
1978	433
1979	797
1980	929
1981	645
1982	1,232
1983	1,095
1984	822
1985	804
1986	563
1987	885
1988	1,119
1989	983
1990	760
1991	822
1992	928
1993	840
1994	1,173
1995	1,324
1996	1,147
1997	1,512
1998	1,232
1999	1,152
2000	924
2001	811
2002	1,152
2003	1,601
2004	1,478
2005	1,031
2006	896
2007	1,428
2008	945
2009	836
2010	2,289
2011	1,106
2012	953
2013	470
2014	556
2015	696
2016	1,340
2017	619
2018	861
2019	758
2020	688
2021	834
2022	661
2023	757
2024	643
2025	722
2026	765

Download the Data

Data for records on 1971-08-11: 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 10	462
10 to 20	30
20 to 30	17
30 to 40	6
40 to 50	0
50 to 60	0
60 to 70	0
70 to 80	1