Weather Records on 30 June 1973

623 weather records were set or tied worldwide on 30 June 1973. Highest significance: Grafton, US.

Key Facts for 30 June 1973

On 30 June 1973, 623 weather records were set or tied at long-record stations worldwide.
175 were record highs and 90 were record lows, counting maximum and minimum temperature.
By timescale, 6 were all-time records, 35 monthly and 582 daily.
Grafton set a daily record precipitation of 84.3 mm (3.3 in) on 30 June 1973.
Across 160 earlier years (1826 to 2026) the same calendar date averaged 449 records.

Record Map

623 stations

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

Weather records on 30 June 1973: highest significance records shown on the map
Station	Country	Type	Value	Significance
Grafton	United States	Record daily precipitation	84.3 mm (3.3 in)	71 of 100 (Major)
South Londonderry	United States	Record daily precipitation	163.6 mm (6.4 in)	71 of 100 (Major)
Carmel	United States	Record daily precipitation	77.7 mm (3.1 in)	67 of 100 (Major)
South Egremont	United States	Record daily precipitation	154.9 mm (6.1 in)	65 of 100 (Major)
George School	United States	Record daily precipitation	80.3 mm (3.2 in)	65 of 100 (Major)
Newfane	United States	Record daily precipitation	110.5 mm (4.4 in)	65 of 100 (Major)
Indian Head Cda	Canada	Record daily precipitation	58.4 mm (2.3 in)	64 of 100 (Major)
Somerville 4 NW	United States	Record daily precipitation	100.1 mm (3.9 in)	64 of 100 (Major)
Sussex 1 NW	United States	Record daily precipitation	67.8 mm (2.7 in)	61 of 100 (Major)
Greenwood Lake	United States	Record daily precipitation	149.9 mm (5.9 in)	59 of 100 (Notable)
Rutland	United States	Record daily precipitation	66.8 mm (2.6 in)	58 of 100 (Notable)
Woodstock	United States	Record daily precipitation	85.9 mm (3.4 in)	58 of 100 (Notable)
Meeker 5 W	United States	Record daily precipitation	137.2 mm (5.4 in)	57 of 100 (Notable)
Cavendish	United States	Record daily precipitation	144.0 mm (5.7 in)	57 of 100 (Notable)
Massabesic Lake	United States	Record daily precipitation	120.7 mm (4.8 in)	56 of 100 (Notable)
Alcove Dam	United States	Record daily precipitation	90.9 mm (3.6 in)	55 of 100 (Notable)
Shelburne Falls	United States	Record daily precipitation	66.3 mm (2.6 in)	54 of 100 (Notable)
Glenham	United States	Record daily precipitation	121.9 mm (4.8 in)	54 of 100 (Notable)
Windham 3 E	United States	Record daily precipitation	58.9 mm (2.3 in)	54 of 100 (Notable)
Mays Mill	United States	Record daily precipitation	69.6 mm (2.7 in)	54 of 100 (Notable)
Rochester	United States	Record daily precipitation	89.4 mm (3.5 in)	54 of 100 (Notable)
Canoe Brook	United States	Record daily precipitation	122.9 mm (4.8 in)	53 of 100 (Notable)
Adams	United States	Record daily precipitation	66.5 mm (2.6 in)	50 of 100 (Notable)
Chesterfield	United States	Record daily precipitation	62.2 mm (2.4 in)	50 of 100 (Notable)
Newport	United States	Record daily precipitation	72.4 mm (2.9 in)	50 of 100 (Notable)
South Danbury	United States	Record daily precipitation	68.3 mm (2.7 in)	49 of 100 (Notable)
Mohonk Lake	United States	Record daily precipitation	80.5 mm (3.2 in)	49 of 100 (Notable)
Manchester	United States	Record daily precipitation	119.1 mm (4.7 in)	49 of 100 (Notable)
Amga	Russia	Record daily precipitation	26.5 mm (1.0 in)	48 of 100 (Notable)
Ringwood	United States	Record daily precipitation	102.9 mm (4.1 in)	48 of 100 (Notable)
Sheridan Fld STN	United States	Record daily precipitation	47.5 mm (1.9 in)	48 of 100 (Notable)
Norfolk 2 SW	United States	Record daily precipitation	62.5 mm (2.5 in)	47 of 100 (Notable)
Esso	Russia	Record daily precipitation	29.3 mm (1.2 in)	46 of 100 (Notable)
Stamps	United States	Record daily precipitation	94.7 mm (3.7 in)	46 of 100 (Notable)
Flemington 5 NNW	United States	Record daily precipitation	75.9 mm (3.0 in)	46 of 100 (Notable)
Gloversville	United States	Record daily precipitation	50.8 mm (2.0 in)	46 of 100 (Notable)
South Newbury	United States	Record daily precipitation	56.9 mm (2.2 in)	46 of 100 (Notable)
Nashua 2 NNW	United States	Record daily precipitation	61.5 mm (2.4 in)	45 of 100 (Notable)
Newport	United States	Record daily precipitation	70.9 mm (2.8 in)	45 of 100 (Notable)
Mansfield	United States	Record daily precipitation	37.6 mm (1.5 in)	43 of 100 (Notable)
Hanover	United States	Record daily precipitation	58.2 mm (2.3 in)	43 of 100 (Notable)
Little Falls	United States	Record daily precipitation	135.4 mm (5.3 in)	43 of 100 (Notable)
Oak Ridge Rsvr	United States	Record daily precipitation	94.7 mm (3.7 in)	43 of 100 (Notable)
Glens Falls Farm	United States	Record daily precipitation	88.4 mm (3.5 in)	43 of 100 (Notable)
The Rock (Bullenbong)	Australia	Record daily precipitation	27.9 mm (1.1 in)	42 of 100 (Notable)
York Pond	United States	Record daily precipitation	43.2 mm (1.7 in)	42 of 100 (Notable)
Charlotteburg Rsvr	United States	Record daily precipitation	110.7 mm (4.4 in)	42 of 100 (Notable)
Dorset 2 SE	United States	Record daily precipitation	73.7 mm (2.9 in)	42 of 100 (Notable)
Leeton (Bents Hill)	Australia	Record daily precipitation	30.0 mm (1.2 in)	41 of 100 (Notable)
Bethlehem	United States	Record daily precipitation	50.8 mm (2.0 in)	41 of 100 (Notable)
Dublin	United States	Record daily precipitation	46.2 mm (1.8 in)	40 of 100 (Notable)
Saint Johnsbury	United States	Record daily precipitation	87.4 mm (3.4 in)	40 of 100 (Notable)
Brockton	United States	Record daily precipitation	33.0 mm (1.3 in)	39 of 100 (Notable)
Morris Plains 1 W	United States	Record daily precipitation	75.2 mm (3.0 in)	39 of 100 (Notable)
Bedford Hills	United States	Record daily precipitation	53.6 mm (2.1 in)	39 of 100 (Notable)
Cutchogue	United States	Record daily precipitation	41.9 mm (1.6 in)	39 of 100 (Notable)
Northfield	United States	Record daily precipitation	88.9 mm (3.5 in)	39 of 100 (Notable)
Malvern	United States	Record daily precipitation	57.9 mm (2.3 in)	38 of 100 (Notable)
Milford	United States	Record daily precipitation	45.7 mm (1.8 in)	38 of 100 (Notable)
Woodstock	United States	Record daily precipitation	69.9 mm (2.8 in)	38 of 100 (Notable)

Counts by Type and Timescale

623 records

Records set or tied on 30 June 1973 by type: Highest daily maximum 74, Lowest daily maximum 53, Highest daily minimum 101, Lowest daily minimum 37, Heaviest daily rainfall 358.

Records on 30 June 1973 by type
Record type	Records
Highest daily maximum	74
Lowest daily maximum	53
Highest daily minimum	101
Lowest daily minimum	37
Heaviest daily rainfall	358
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 30 June 1973 by timescale: all-time 6, monthly 35, daily 582.

How Much Records Were Beaten By

510 broken records

Margins by which the 510 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 106.7. Ties are not counted.

Top 20 by Significance

30 June 1973

Top 20 records on 30 June 1973 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 June 1973	Grafton, US	daily rain	84.3 mm (3.3 in)	64.0 mm (2.5 in)	75 years	71 of 100 (Major)
30 June 1973	South Londonderry, US	all-time rain	163.6 mm (6.4 in)	75.2 mm (3.0 in)	24 years	71 of 100 (Major)
30 June 1973	Carmel, US	daily rain	77.7 mm (3.1 in)	51.5 mm (2.0 in)	66 years	67 of 100 (Major)
30 June 1973	South Egremont, US	monthly rain	154.9 mm (6.1 in)	50.8 mm (2.0 in)	29 years	65 of 100 (Major)
30 June 1973	George School, US	daily rain	80.3 mm (3.2 in)	53.1 mm (2.1 in)	66 years	65 of 100 (Major)
30 June 1973	Newfane, US	monthly rain	110.5 mm (4.4 in)	53.9 mm (2.1 in)	39 years	65 of 100 (Major)
30 June 1973	Indian Head Cda, CA	daily rain	58.4 mm (2.3 in)	37.1 mm (1.5 in)	81 years	64 of 100 (Major)
30 June 1973	Somerville 4 NW, US	daily rain	100.1 mm (3.9 in)	52.9 mm (2.1 in)	52 years	64 of 100 (Major)
30 June 1973	Sussex 1 NW, US	daily rain	67.8 mm (2.7 in)	39.4 mm (1.6 in)	68 years	61 of 100 (Major)
30 June 1973	Greenwood Lake, US	monthly rain	149.9 mm (5.9 in)	76.2 mm (3.0 in)	21 years	59 of 100 (Notable)
30 June 1973	Rutland, US	daily rain	66.8 mm (2.6 in)	46.0 mm (1.8 in)	44 years	58 of 100 (Notable)
30 June 1973	Woodstock, US	daily rain	85.9 mm (3.4 in)	39.9 mm (1.6 in)	44 years	58 of 100 (Notable)
30 June 1973	Meeker 5 W, US	daily rain	137.2 mm (5.4 in)	106.7 mm (4.2 in)	31 years	57 of 100 (Notable)
30 June 1973	Cavendish, US	all-time rain	144.0 mm (5.7 in)	19.0 mm (0.7 in)	45 years	57 of 100 (Notable)
30 June 1973	Massabesic Lake, US	monthly rain	120.7 mm (4.8 in)	63.5 mm (2.5 in)	12 years	56 of 100 (Notable)
30 June 1973	Alcove Dam, US	monthly rain	90.9 mm (3.6 in)	31.2 mm (1.2 in)	29 years	55 of 100 (Notable)
30 June 1973	Shelburne Falls, US	daily rain	66.3 mm (2.6 in)	52.8 mm (2.1 in)	34 years	54 of 100 (Notable)
30 June 1973	Glenham, US	monthly rain	121.9 mm (4.8 in)	56.1 mm (2.2 in)	1 year	54 of 100 (Notable)
30 June 1973	Windham 3 E, US	daily rain	58.9 mm (2.3 in)	30.5 mm (1.2 in)	68 years	54 of 100 (Notable)
30 June 1973	Mays Mill, US	daily rain	69.6 mm (2.7 in)	48.0 mm (1.9 in)	34 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

1826 to 1973

Records set or tied on this calendar date in each year from 1826 to 1973. 1973 had 623 records.

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

Records on 06-30 in each year
Year	Records
1826	1
1832	1
1835	2
1843	2
1846	1
1848	2
1849	1
1853	1
1855	1
1857	1
1860	1
1863	1
1865	1
1869	1
1871	1
1873	1
1876	1
1879	2
1882	2
1883	3
1885	4
1886	1
1887	2
1888	2
1889	1
1890	3
1891	2
1892	1
1894	1
1895	1
1896	2
1897	6
1898	3
1899	4
1900	5
1901	9
1902	10
1903	8
1904	20
1905	23
1906	20
1907	12
1908	17
1909	39
1910	57
1911	12
1912	32
1913	99
1914	97
1915	40
1916	66
1917	39
1918	54
1919	72
1920	319
1921	121
1922	133
1923	309
1924	194
1925	113
1926	65
1927	240
1928	137
1929	213
1930	168
1931	774
1932	154
1933	571
1934	331
1935	347
1936	620
1937	458
1938	330
1939	438
1940	346
1941	341
1942	408
1943	790
1944	272
1945	671
1946	631
1947	487
1948	340
1949	403
1950	494
1951	517
1952	533
1953	404
1954	426
1955	432
1956	409
1957	592
1958	423
1959	948
1960	270
1961	351
1962	375
1963	560
1964	434
1965	240
1966	379
1967	414
1968	752
1969	459
1970	730
1971	459
1972	558
1973	623
1974	643
1975	414
1976	607
1977	662
1978	721
1979	601
1980	935
1981	838
1982	1,230
1983	752
1984	722
1985	829
1986	745
1987	1,044
1988	1,216
1989	953
1990	1,191
1991	1,129
1992	1,670
1993	711
1994	951
1995	1,354
1996	889
1997	938
1998	1,714
1999	910
2000	861
2001	778
2002	904
2003	896
2004	998
2005	1,526
2006	723
2007	736
2008	852
2009	1,052
2010	1,069
2011	1,057
2012	1,416
2013	963
2014	496
2015	1,018
2016	371
2017	642
2018	625
2019	1,042
2020	1,151
2021	1,442
2022	709
2023	531
2024	1,004
2025	858
2026	999

Download the Data

Data for records on 1973-06-30: 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 20	434
20 to 40	46
40 to 60	22
60 to 80	7
80 to 100	0
100 to 120	1