Weather Records on 30 August 1973

646 weather records were set or tied worldwide on 30 August 1973. Highest significance: Rest Lake, US.

Key Facts for 30 August 1973

On 30 August 1973, 646 weather records were set or tied at long-record stations worldwide.
370 were record highs and 107 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 11 monthly and 634 daily.
Rest Lake set a daily record precipitation of 96.8 mm (3.8 in) on 30 August 1973.
Across 169 earlier years (1806 to 2026) the same calendar date averaged 422 records.

Record Map

646 stations

646 station records on 30 August 1973 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 August 1973: highest significance records shown on the map
Station	Country	Type	Value	Significance
Rest Lake	United States	Record daily precipitation	96.8 mm (3.8 in)	56 of 100 (Notable)
Baltimore Customs House	United States	Record high minimum temperature	28.3 C (82.9 F)	51 of 100 (Notable)
Weimar	Germany	Record daily precipitation	27.3 mm (1.1 in)	49 of 100 (Notable)
Newark Liberty Intl AP	United States	Record high minimum temperature	26.1 C (79.0 F)	48 of 100 (Notable)
Creston	Canada	Record daily precipitation	45.2 mm (1.8 in)	45 of 100 (Notable)
Socorro	United States	Record daily precipitation	44.2 mm (1.7 in)	45 of 100 (Notable)
Jetmore	United States	Record daily precipitation	70.1 mm (2.8 in)	44 of 100 (Notable)
State UNIV	United States	Record daily precipitation	63.2 mm (2.5 in)	40 of 100 (Notable)
Storrs	United States	Record high minimum temperature	22.2 C (72.0 F)	39 of 100 (Notable)
Schierke	Germany	Record daily precipitation	28.2 mm (1.1 in)	38 of 100 (Notable)
Flora 5 NW	United States	Record daily precipitation	33.8 mm (1.3 in)	38 of 100 (Notable)
Grafton	United States	Record high maximum temperature	32.8 C (91.0 F)	36 of 100 (Notable)
Hamilton Fairfield	United States	Record daily precipitation	49.8 mm (2.0 in)	36 of 100 (Notable)
Amanzamnyama (Bos)	South Africa	Record daily precipitation	32.5 mm (1.3 in)	35 of 100 (Notable)
Westminster 2 SSE	United States	Record high minimum temperature	23.3 C (73.9 F)	35 of 100 (Notable)
Buckatunna 1 NE	United States	Record daily precipitation	70.4 mm (2.8 in)	35 of 100 (Notable)
Roosevelt 1 S	United States	Record low minimum temperature	13.3 C (55.9 F)	34 of 100 (Routine)
Bluff Lake	United States	Record daily precipitation	72.4 mm (2.9 in)	34 of 100 (Routine)
Poplar Bluff	United States	Record daily precipitation	31.0 mm (1.2 in)	34 of 100 (Routine)
Munchen-Riem	Germany	Record daily precipitation	37.8 mm (1.5 in)	33 of 100 (Routine)
Atyrau	Kazakhstan	Record low maximum temperature	20.8 C (69.4 F)	33 of 100 (Routine)
Haileybury	Canada	Record high minimum temperature	20.0 C (68.0 F)	32 of 100 (Routine)
Southampton	Canada	Record high minimum temperature	22.8 C (73.0 F)	32 of 100 (Routine)
Weihenstephan-Durnast	Germany	Record daily precipitation	30.3 mm (1.2 in)	32 of 100 (Routine)
C.A.E. Llera	Mexico	Record low minimum temperature	12.8 C (55.0 F)	32 of 100 (Routine)
Ust-Sugor	Russia	Record daily precipitation	30.2 mm (1.2 in)	32 of 100 (Routine)
Ntywenka (Bos)	South Africa	Record daily precipitation	32.0 mm (1.3 in)	32 of 100 (Routine)
Keams Canyon	United States	Record high minimum temperature	21.1 C (70.0 F)	32 of 100 (Routine)
New Bedford Coop	United States	Record high maximum temperature	37.8 C (100.0 F)	32 of 100 (Routine)
Candelaria	United States	Record daily precipitation	33.0 mm (1.3 in)	32 of 100 (Routine)
Wasa	Canada	Record daily precipitation	34.0 mm (1.3 in)	31 of 100 (Routine)
Greencastle 1 W	United States	Record daily precipitation	26.7 mm (1.1 in)	31 of 100 (Routine)
Crandall 8 N	United States	Record daily precipitation	34.8 mm (1.4 in)	31 of 100 (Routine)
Port Jervis	United States	Record high minimum temperature	20.6 C (69.1 F)	31 of 100 (Routine)
Meeker 5 W	United States	Record daily precipitation	69.3 mm (2.7 in)	31 of 100 (Routine)
Belleville	Canada	Record high minimum temperature	23.3 C (73.9 F)	30 of 100 (Routine)
Saint Johns	United States	Record high minimum temperature	20.6 C (69.1 F)	30 of 100 (Routine)
Dannemora	United States	Record high minimum temperature	22.8 C (73.0 F)	29 of 100 (Routine)
Jodhpur	India	Record daily precipitation	59.9 mm (2.4 in)	27 of 100 (Routine)
Port Shepstone	South Africa	Record daily precipitation	27.0 mm (1.1 in)	27 of 100 (Routine)
Tuba City	United States	Record low minimum temperature	6.1 C (43.0 F)	27 of 100 (Routine)
Bosque del Apache	United States	Record daily precipitation	27.4 mm (1.1 in)	27 of 100 (Routine)
Mohonk Lake	United States	Record high minimum temperature	22.8 C (73.0 F)	27 of 100 (Routine)
State College	United States	Record high minimum temperature	20.6 C (69.1 F)	27 of 100 (Routine)
Col du Grand St-Bernard	Switzerland	Record daily precipitation	41.5 mm (1.6 in)	26 of 100 (Routine)
Gabriels	United States	Record high maximum temperature	31.1 C (88.0 F)	26 of 100 (Routine)
Little Falls City Rsch	United States	Record high minimum temperature	20.0 C (68.0 F)	26 of 100 (Routine)
Marble Bar Comparison	Australia	Record high minimum temperature	21.6 C (70.9 F)	25 of 100 (Routine)
Pekisko	Canada	Record daily precipitation	36.6 mm (1.4 in)	25 of 100 (Routine)
Kitchener	Canada	Record high minimum temperature	21.7 C (71.1 F)	25 of 100 (Routine)
Bancroft	Canada	Record high minimum temperature	18.9 C (66.0 F)	25 of 100 (Routine)
Macdonald College	Canada	Record high minimum temperature	22.2 C (72.0 F)	25 of 100 (Routine)
Atyrau	Kazakhstan	Record low minimum temperature	4.8 C (40.6 F)	25 of 100 (Routine)
Villaflores (Smn)	Mexico	Record daily precipitation	59.2 mm (2.3 in)	25 of 100 (Routine)
Zinder	Niger	Record high maximum temperature	38.4 C (101.1 F)	25 of 100 (Routine)
Center 4 SSW	United States	Record low maximum temperature	16.7 C (62.1 F)	25 of 100 (Routine)
Gaylord	United States	Record high minimum temperature	20.0 C (68.0 F)	25 of 100 (Routine)
Cavendish	United States	Record high maximum temperature	33.9 C (93.0 F)	25 of 100 (Routine)
St Catharines	Canada	Record high minimum temperature	23.3 C (73.9 F)	24 of 100 (Routine)
Brome	Canada	Record high minimum temperature	20.0 C (68.0 F)	24 of 100 (Routine)

Counts by Type and Timescale

646 records

Records set or tied on 30 August 1973 by type: Highest daily maximum 127, Lowest daily maximum 60, Highest daily minimum 243, Lowest daily minimum 47, Heaviest daily rainfall 169.

Records on 30 August 1973 by type
Record type	Records
Highest daily maximum	127
Lowest daily maximum	60
Highest daily minimum	243
Lowest daily minimum	47
Heaviest daily rainfall	169
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 30 August 1973 by timescale: all-time 1, monthly 11, daily 634.

How Much Records Were Beaten By

471 broken records

Margins by which the 471 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 62.0. Ties are not counted.

Top 20 by Significance

30 August 1973

Top 20 records on 30 August 1973 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 August 1973	Rest Lake, US	daily rain	96.8 mm (3.8 in)	62.0 mm (2.4 in)	36 years	56 of 100 (Notable)
30 August 1973	Baltimore Customs House, US	daily high min	28.3 C (82.9 F)	3.9 C (7.0 F)	95 years	51 of 100 (Notable)
30 August 1973	Weimar, DE	daily rain	27.3 mm (1.1 in)	15.3 mm (0.6 in)	52 years	49 of 100 (Notable)
30 August 1973	Newark Liberty Intl AP, US	daily high min	26.1 C (79.0 F)	2.8 C (5.0 F)	101 years	48 of 100 (Notable)
30 August 1973	Creston, CA	daily rain	45.2 mm (1.8 in)	22.1 mm (0.9 in)	2 years	45 of 100 (Notable)
30 August 1973	Socorro, US	daily rain	44.2 mm (1.7 in)	11.2 mm (0.4 in)	66 years	45 of 100 (Notable)
30 August 1973	Jetmore, US	daily rain	70.1 mm (2.8 in)	37.1 mm (1.5 in)	32 years	44 of 100 (Notable)
30 August 1973	State UNIV, US	daily rain	63.2 mm (2.5 in)	37.8 mm (1.5 in)	23 years	40 of 100 (Notable)
30 August 1973	Storrs, US	daily high min	22.2 C (72.0 F)	3.3 C (5.9 F)	74 years	39 of 100 (Notable)
30 August 1973	Schierke, DE	daily rain	28.2 mm (1.1 in)	17.2 mm (0.7 in)	12 years	38 of 100 (Notable)
30 August 1973	Flora 5 NW, US	daily rain	33.8 mm (1.3 in)	20.6 mm (0.8 in)	52 years	38 of 100 (Notable)
30 August 1973	Grafton, US	daily high max	32.8 C (91.0 F)	2.8 C (5.0 F)	72 years	36 of 100 (Notable)
30 August 1973	Hamilton Fairfield, US	daily rain	49.8 mm (2.0 in)	30.7 mm (1.2 in)	23 years	36 of 100 (Notable)
30 August 1973	Amanzamnyama (Bos), ZA	daily rain	32.5 mm (1.3 in)	21.1 mm (0.8 in)	30 years	35 of 100 (Notable)
30 August 1973	Westminster 2 SSE, US	daily high min	23.3 C (73.9 F)	1.6 C (2.9 F)	77 years	35 of 100 (Notable)
30 August 1973	Buckatunna 1 NE, US	daily rain	70.4 mm (2.8 in)	40.7 mm (1.6 in)	7 years	35 of 100 (Notable)
30 August 1973	Roosevelt 1 S, US	daily low min	13.3 C (55.9 F)	2.3 C (4.1 F)	66 years	34 of 100 (Routine)
30 August 1973	Bluff Lake, US	daily rain	72.4 mm (2.9 in)	38.9 mm (1.5 in)	23 years	34 of 100 (Routine)
30 August 1973	Poplar Bluff, US	daily rain	31.0 mm (1.2 in)	9.4 mm (0.37 in)	72 years	34 of 100 (Routine)
30 August 1973	Munchen-Riem, DE	daily rain	37.8 mm (1.5 in)	21.4 mm (0.8 in)	18 years	33 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

1806 to 1973

Records set or tied on this calendar date in each year from 1806 to 1973. 1973 had 646 records.

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

Records on 08-30 in each year
Year	Records
1806	1
1807	4
1813	1
1814	2
1827	1
1829	1
1835	1
1838	1
1839	1
1845	4
1850	1
1851	2
1855	1
1857	1
1859	1
1864	2
1867	1
1869	1
1870	2
1874	1
1875	2
1876	1
1877	2
1878	1
1880	4
1881	2
1882	1
1884	1
1885	5
1886	7
1887	1
1888	1
1889	2
1890	5
1891	1
1892	3
1893	3
1894	2
1895	1
1896	1
1897	3
1898	3
1899	2
1900	6
1901	8
1902	12
1903	19
1904	13
1905	23
1906	29
1907	8
1908	10
1909	37
1910	15
1911	41
1912	60
1913	22
1914	23
1915	47
1916	17
1917	50
1918	45
1919	17
1920	78
1921	100
1922	65
1923	61
1924	283
1925	167
1926	173
1927	109
1928	327
1929	208
1930	245
1931	192
1932	1,102
1933	274
1934	519
1935	476
1936	191
1937	418
1938	233
1939	401
1940	346
1941	422
1942	385
1943	487
1944	491
1945	455
1946	545
1947	599
1948	519
1949	240
1950	481
1951	1,091
1952	316
1953	1,124
1954	516
1955	417
1956	479
1957	321
1958	363
1959	546
1960	356
1961	573
1962	387
1963	442
1964	422
1965	1,118
1966	500
1967	536
1968	729
1969	522
1970	423
1971	443
1972	579
1973	646
1974	838
1975	664
1976	679
1977	665
1978	825
1979	517
1980	572
1981	684
1982	770
1983	696
1984	1,127
1985	629
1986	1,768
1987	638
1988	881
1989	791
1990	983
1991	938
1992	1,697
1993	1,200
1994	601
1995	940
1996	1,385
1997	960
1998	1,278
1999	864
2000	1,189
2001	750
2002	801
2003	1,226
2004	1,087
2005	1,500
2006	989
2007	1,300
2008	678
2009	1,251
2010	1,552
2011	994
2012	1,087
2013	644
2014	558
2015	1,074
2016	552
2017	924
2018	616
2019	755
2020	671
2021	429
2022	1,077
2023	651
2024	912
2025	324
2026	733

Download the Data

Data for records on 1973-08-30: 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	427
10 to 20	24
20 to 30	11
30 to 40	7
40 to 50	1
50 to 60	0
60 to 70	1