Weather Records on 11 August 1973

451 weather records were set or tied worldwide on 11 August 1973. Highest significance: Ajojucar, MX.

Key Facts for 11 August 1973

On 11 August 1973, 451 weather records were set or tied at long-record stations worldwide.
166 were record highs and 136 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 8 monthly and 443 daily.
Ajojucar set a monthly record daily precipitation of 121.4 mm (4.8 in) on 11 August 1973.
Across 161 earlier years (1793 to 2026) the same calendar date averaged 461 records.

Record Map

451 stations

451 station records on 11 August 1973 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 11 August 1973: highest significance records shown on the map
Station	Country	Type	Value	Significance
Ajojucar	Mexico	Record daily precipitation	121.4 mm (4.8 in)	62 of 100 (Major)
Grenfell	Canada	Record daily precipitation	33.0 mm (1.3 in)	52 of 100 (Notable)
Grayson 3 SW	United States	Record daily precipitation	67.3 mm (2.6 in)	49 of 100 (Notable)
Francisco I. Madero	Mexico	Record daily precipitation	59.9 mm (2.4 in)	47 of 100 (Notable)
Mechanicville 2 S	United States	Record daily precipitation	67.8 mm (2.7 in)	45 of 100 (Notable)
Skaneateles	United States	Record daily precipitation	42.9 mm (1.7 in)	40 of 100 (Notable)
University Exp STN	United States	Record daily precipitation	30.2 mm (1.2 in)	39 of 100 (Notable)
Muskogee	United States	Record daily precipitation	65.5 mm (2.6 in)	38 of 100 (Notable)
Arkadelphia 2 N	United States	Record daily precipitation	54.6 mm (2.1 in)	37 of 100 (Notable)
Myerstown	United States	Record daily precipitation	57.4 mm (2.3 in)	37 of 100 (Notable)
Geisenheim	Germany	Record high maximum temperature	32.0 C (89.6 F)	35 of 100 (Notable)
Askaniia Nova	Ukraine	Record low maximum temperature	18.1 C (64.6 F)	35 of 100 (Notable)
Antlers	United States	Record daily precipitation	54.6 mm (2.1 in)	35 of 100 (Notable)
Monticello Muni AP	United States	Record daily precipitation	42.7 mm (1.7 in)	35 of 100 (Notable)
Nikopol	Ukraine	Record daily precipitation	31.5 mm (1.2 in)	34 of 100 (Routine)
Covington	United States	Record daily precipitation	41.9 mm (1.6 in)	34 of 100 (Routine)
Cuddalore	India	Record daily precipitation	59.9 mm (2.4 in)	33 of 100 (Routine)
Bremerton	United States	Record low maximum temperature	17.8 C (64.0 F)	33 of 100 (Routine)
Allakaket	United States	Record low maximum temperature	10.0 C (50.0 F)	33 of 100 (Routine)
Causapscal	Canada	Record daily precipitation	34.3 mm (1.4 in)	32 of 100 (Routine)
Calarasi	Romania	Record low minimum temperature	10.9 C (51.6 F)	32 of 100 (Routine)
Carrabelle 1 NNW	United States	Record high minimum temperature	26.1 C (79.0 F)	32 of 100 (Routine)
Clarinda	United States	Record daily precipitation	57.9 mm (2.3 in)	32 of 100 (Routine)
Ica	Russia	Record high maximum temperature	25.0 C (77.0 F)	31 of 100 (Routine)
Pjatigorsk	Russia	Record daily precipitation	36.7 mm (1.4 in)	31 of 100 (Routine)
Edmonton 3 W	United States	Record daily precipitation	41.7 mm (1.6 in)	31 of 100 (Routine)
Durham	United States	Record high minimum temperature	22.2 C (72.0 F)	31 of 100 (Routine)
Tryon	United States	Record daily precipitation	105.4 mm (4.1 in)	31 of 100 (Routine)
Meeker 5 W	United States	Record daily precipitation	25.9 mm (1.0 in)	31 of 100 (Routine)
Mistassini Post	Canada	Record high minimum temperature	18.3 C (64.9 F)	30 of 100 (Routine)
Kislovodsk	Russia	Record low maximum temperature	15.8 C (60.4 F)	30 of 100 (Routine)
Aztec Ruins Nm	United States	Record high maximum temperature	36.7 C (98.1 F)	30 of 100 (Routine)
Saint Johnsbury	United States	Record daily precipitation	32.3 mm (1.3 in)	30 of 100 (Routine)
Concrete Ppl Fish STN	United States	Record low maximum temperature	18.3 C (64.9 F)	30 of 100 (Routine)
Tasiilaq	Greenland [Denmark]	Record low minimum temperature	-2.6 C (27.3 F)	29 of 100 (Routine)
Angleton 2 W	United States	Record low minimum temperature	18.3 C (64.9 F)	29 of 100 (Routine)
Burkes Garden	United States	Record daily precipitation	38.1 mm (1.5 in)	29 of 100 (Routine)
Achikulak	Russia	Record daily precipitation	29.9 mm (1.2 in)	28 of 100 (Routine)
Dufur	United States	Record low minimum temperature	3.3 C (37.9 F)	28 of 100 (Routine)
Summit WSO AP	United States	Record low maximum temperature	7.2 C (45.0 F)	28 of 100 (Routine)
Bamberg	Germany	Record high maximum temperature	30.9 C (87.6 F)	27 of 100 (Routine)
Vilnius	Lithuania	Record low minimum temperature	6.6 C (43.9 F)	27 of 100 (Routine)
Taganrog (Lighthouse)	Russia	Record low maximum temperature	19.0 C (66.2 F)	27 of 100 (Routine)
Hartford Brainard Fld	United States	Record high minimum temperature	23.9 C (75.0 F)	27 of 100 (Routine)
Apatzingan (Smn)	Mexico	Record high minimum temperature	27.8 C (82.0 F)	26 of 100 (Routine)
Zacatecas (Smn)	Mexico	Record low maximum temperature	13.3 C (55.9 F)	26 of 100 (Routine)
Towson	United States	Record high minimum temperature	22.2 C (72.0 F)	26 of 100 (Routine)
Russell	United States	Record daily precipitation	72.6 mm (2.9 in)	26 of 100 (Routine)
Lewistown	United States	Record daily precipitation	34.8 mm (1.4 in)	26 of 100 (Routine)
Hugo	United States	Record daily precipitation	47.0 mm (1.9 in)	25 of 100 (Routine)
Bluestone Lake	United States	Record daily precipitation	40.4 mm (1.6 in)	25 of 100 (Routine)
Tg Jiu	Romania	Record low minimum temperature	9.0 C (48.2 F)	24 of 100 (Routine)
Deland 1 SSE	United States	Record low minimum temperature	16.7 C (62.1 F)	24 of 100 (Routine)
Sunbury	United States	Record daily precipitation	33.0 mm (1.3 in)	24 of 100 (Routine)
Kuujjuarapik A	Canada	Record high minimum temperature	15.6 C (60.1 F)	23 of 100 (Routine)
Sombrerete (Dge)	Mexico	Record low maximum temperature	17.8 C (64.0 F)	23 of 100 (Routine)
Ai-Petri	Ukraine	Record low maximum temperature	10.3 C (50.5 F)	23 of 100 (Routine)
Ai-Petri	Ukraine	Record low minimum temperature	5.6 C (42.1 F)	23 of 100 (Routine)
Newport Beach Harbor	United States	Record low maximum temperature	20.0 C (68.0 F)	23 of 100 (Routine)
Tustin Irvine Rch	United States	Record low maximum temperature	25.6 C (78.1 F)	23 of 100 (Routine)

Counts by Type and Timescale

451 records

Records set or tied on 11 August 1973 by type: Highest daily maximum 47, Lowest daily maximum 77, Highest daily minimum 119, Lowest daily minimum 59, Heaviest daily rainfall 149.

Records on 11 August 1973 by type
Record type	Records
Highest daily maximum	47
Lowest daily maximum	77
Highest daily minimum	119
Lowest daily minimum	59
Heaviest daily rainfall	149
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 11 August 1973 by timescale: all-time 0, monthly 8, daily 443.

How Much Records Were Beaten By

327 broken records

Margins by which the 327 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 62.5. Ties are not counted.

Top 20 by Significance

11 August 1973

Top 20 records on 11 August 1973 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 August 1973	Ajojucar, MX	monthly rain	121.4 mm (4.8 in)	61.5 mm (2.4 in)	32 years	62 of 100 (Major)
11 August 1973	Grenfell, CA	daily rain	33.0 mm (1.3 in)	20.3 mm (0.8 in)	66 years	52 of 100 (Notable)
11 August 1973	Grayson 3 SW, US	daily rain	67.3 mm (2.6 in)	62.5 mm (2.5 in)	19 years	49 of 100 (Notable)
11 August 1973	Francisco I. Madero, MX	daily rain	59.9 mm (2.4 in)	40.1 mm (1.6 in)	12 years	47 of 100 (Notable)
11 August 1973	Mechanicville 2 S, US	daily rain	67.8 mm (2.7 in)	26.4 mm (1.0 in)	48 years	45 of 100 (Notable)
11 August 1973	Skaneateles, US	daily rain	42.9 mm (1.7 in)	15.0 mm (0.6 in)	68 years	40 of 100 (Notable)
11 August 1973	University Exp STN, US	daily rain	30.2 mm (1.2 in)	15.0 mm (0.6 in)	43 years	39 of 100 (Notable)
11 August 1973	Muskogee, US	daily rain	65.5 mm (2.6 in)	30.4 mm (1.2 in)	46 years	38 of 100 (Notable)
11 August 1973	Arkadelphia 2 N, US	daily rain	54.6 mm (2.1 in)	17.5 mm (0.7 in)	67 years	37 of 100 (Notable)
11 August 1973	Myerstown, US	daily rain	57.4 mm (2.3 in)	50.8 mm (2.0 in)	12 years	37 of 100 (Notable)
11 August 1973	Geisenheim, DE	daily high max	32.0 C (89.6 F)	0.8 C (1.4 F)	84 years	35 of 100 (Notable)
11 August 1973	Askaniia Nova, UA	daily low max	18.1 C (64.6 F)	5.0 C (9.0 F)	63 years	35 of 100 (Notable)
11 August 1973	Antlers, US	daily rain	54.6 mm (2.1 in)	31.2 mm (1.2 in)	52 years	35 of 100 (Notable)
11 August 1973	Monticello Muni AP, US	daily rain	42.7 mm (1.7 in)	21.9 mm (0.9 in)	36 years	35 of 100 (Notable)
11 August 1973	Nikopol, UA	daily rain	31.5 mm (1.2 in)	17.6 mm (0.7 in)	35 years	34 of 100 (Routine)
11 August 1973	Covington, US	daily rain	41.9 mm (1.6 in)	30.5 mm (1.2 in)	23 years	34 of 100 (Routine)
11 August 1973	Cuddalore, IN	daily rain	59.9 mm (2.4 in)	14.9 mm (0.6 in)	59 years	33 of 100 (Routine)
11 August 1973	Bremerton, US	daily low max	17.8 C (64.0 F)	2.2 C (4.0 F)	72 years	33 of 100 (Routine)
11 August 1973	Allakaket, US	daily low max	10.0 C (50.0 F)	3.9 C (7.0 F)	62 years	33 of 100 (Routine)
11 August 1973	Causapscal, CA	daily rain	34.3 mm (1.4 in)	8.9 mm (0.35 in)	59 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 1973

Records set or tied on this calendar date in each year from 1793 to 1973. 1973 had 451 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 1973-08-11: 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	284
10 to 20	26
20 to 30	9
30 to 40	4
40 to 50	1
50 to 60	1
60 to 70	2