Weather Records on 28 July 1973

500 weather records were set or tied worldwide on 28 July 1973. Highest significance: Castelo Do Piaui (Marvao), BR.

Key Facts for 28 July 1973

On 28 July 1973, 500 weather records were set or tied at long-record stations worldwide.
86 were record highs and 155 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 7 monthly and 492 daily.
Castelo Do Piaui (Marvao) set a daily record precipitation of 27.1 mm (1.1 in) on 28 July 1973.
Across 155 earlier years (1815 to 2026) the same calendar date averaged 472 records.

Record Map

500 stations

500 station records on 28 July 1973 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 28 July 1973: highest significance records shown on the map
Station	Country	Type	Value	Significance
Castelo Do Piaui (Marvao)	Brazil	Record daily precipitation	27.1 mm (1.1 in)	59 of 100 (Notable)
Jua	Brazil	Record daily precipitation	44.0 mm (1.7 in)	54 of 100 (Notable)
New Bern 3 NW	United States	Record daily precipitation	91.4 mm (3.6 in)	51 of 100 (Notable)
Columbus	United States	Record daily precipitation	100.3 mm (3.9 in)	50 of 100 (Notable)
Ojinaga (Smn)	Mexico	Record daily precipitation	45.0 mm (1.8 in)	47 of 100 (Notable)
Varadouro	Brazil	Record daily precipitation	25.0 mm (1.0 in)	46 of 100 (Notable)
Frecheirinha	Brazil	Record daily precipitation	44.8 mm (1.8 in)	46 of 100 (Notable)
Sao Jose Dos Campos	Brazil	Record daily precipitation	32.1 mm (1.3 in)	45 of 100 (Notable)
Castellon de la Plana	Spain	Record daily precipitation	31.7 mm (1.2 in)	45 of 100 (Notable)
Ann Arbor U of Mich	United States	Record daily precipitation	31.2 mm (1.2 in)	43 of 100 (Notable)
Graca	Brazil	Record daily precipitation	65.4 mm (2.6 in)	42 of 100 (Notable)
Yalta	Ukraine	Record daily precipitation	34.3 mm (1.4 in)	42 of 100 (Notable)
Jacarei	Brazil	Record daily precipitation	28.7 mm (1.1 in)	41 of 100 (Notable)
Newark Liberty Intl AP	United States	Record high minimum temperature	24.4 C (75.9 F)	41 of 100 (Notable)
Aquiraz	Brazil	Record daily precipitation	48.0 mm (1.9 in)	39 of 100 (Notable)
Vilnius	Lithuania	Record daily precipitation	44.6 mm (1.8 in)	39 of 100 (Notable)
La Junta	Mexico	Record daily precipitation	42.2 mm (1.7 in)	39 of 100 (Notable)
Dunbar Forest Exp STN	United States	Record daily precipitation	44.2 mm (1.7 in)	39 of 100 (Notable)
Heinersreuth-Vollhof	Germany	Record low maximum temperature	12.6 C (54.7 F)	38 of 100 (Notable)
Brome	Canada	Record daily precipitation	29.0 mm (1.1 in)	37 of 100 (Notable)
Bamberg	Germany	Record low maximum temperature	13.4 C (56.1 F)	37 of 100 (Notable)
Reedy Creek Station	Australia	Record daily precipitation	38.1 mm (1.5 in)	36 of 100 (Notable)
Wien	Austria	Record low maximum temperature	15.7 C (60.3 F)	36 of 100 (Notable)
Chemnitz	Germany	Record low maximum temperature	13.3 C (55.9 F)	36 of 100 (Notable)
Cheesman	United States	Record low minimum temperature	3.3 C (37.9 F)	36 of 100 (Notable)
Pine Grove Fire Twr	United States	Record daily precipitation	73.2 mm (2.9 in)	36 of 100 (Notable)
Chillicothe	United States	Record daily precipitation	59.4 mm (2.3 in)	36 of 100 (Notable)
Nurnberg	Germany	Record low maximum temperature	14.4 C (57.9 F)	35 of 100 (Notable)
Sparta	United States	Record daily precipitation	57.9 mm (2.3 in)	35 of 100 (Notable)
Lancaster	United States	Record daily precipitation	31.8 mm (1.3 in)	35 of 100 (Notable)
Tamiami Trail 40 Mi Bend	United States	Record daily precipitation	65.5 mm (2.6 in)	34 of 100 (Routine)
La Grange	United States	Record daily precipitation	48.0 mm (1.9 in)	34 of 100 (Routine)
Nome AP	United States	Record low minimum temperature	-0.6 C (30.9 F)	34 of 100 (Routine)
Winterswijk	Netherlands	Record daily precipitation	28.1 mm (1.1 in)	33 of 100 (Routine)
Centreville	United States	Record daily precipitation	74.4 mm (2.9 in)	33 of 100 (Routine)
Salto Grande (Cpfl)	Brazil	Record daily precipitation	27.3 mm (1.1 in)	32 of 100 (Routine)
Niceville	United States	Record daily precipitation	88.6 mm (3.5 in)	32 of 100 (Routine)
Jemez Springs	United States	Record low minimum temperature	9.4 C (48.9 F)	32 of 100 (Routine)
Parafuso	Brazil	Record daily precipitation	33.5 mm (1.3 in)	31 of 100 (Routine)
Lost River	Canada	Record daily precipitation	41.4 mm (1.6 in)	31 of 100 (Routine)
Lozova	Ukraine	Record daily precipitation	36.5 mm (1.4 in)	30 of 100 (Routine)
Huetamo	Mexico	Record daily precipitation	40.4 mm (1.6 in)	29 of 100 (Routine)
Thomasville	United States	Record daily precipitation	38.9 mm (1.5 in)	29 of 100 (Routine)
Wadena 3 S	United States	Record low maximum temperature	17.8 C (64.0 F)	29 of 100 (Routine)
Miami	United States	Record daily precipitation	27.9 mm (1.1 in)	29 of 100 (Routine)
Newport News Press Bld	United States	Record daily precipitation	40.6 mm (1.6 in)	29 of 100 (Routine)
Fort Huachuca	United States	Record low maximum temperature	23.9 C (75.0 F)	29 of 100 (Routine)
Gorlitz	Germany	Record low maximum temperature	16.1 C (61.0 F)	28 of 100 (Routine)
Tezontepec (Smn)	Mexico	Record daily precipitation	25.9 mm (1.0 in)	28 of 100 (Routine)
Objacevo	Russia	Record daily precipitation	34.0 mm (1.3 in)	28 of 100 (Routine)
Roy	United States	Record low minimum temperature	10.6 C (51.1 F)	28 of 100 (Routine)
Gumri	Armenia	Record high maximum temperature	35.3 C (95.5 F)	27 of 100 (Routine)
Kudymkar	Russia	Record daily precipitation	33.8 mm (1.3 in)	27 of 100 (Routine)
Sandy Cape Lighthouse	Australia	Record daily precipitation	74.2 mm (2.9 in)	26 of 100 (Routine)
Fortaleza	Brazil	Record daily precipitation	25.3 mm (1.0 in)	26 of 100 (Routine)
San Carlos	United States	Record low maximum temperature	33.3 C (91.9 F)	26 of 100 (Routine)
Vanderbilt 11ENE	United States	Record low maximum temperature	16.7 C (62.1 F)	26 of 100 (Routine)
Jal	United States	Record low maximum temperature	28.9 C (84.0 F)	26 of 100 (Routine)
Szombathely	Hungary	Record low minimum temperature	8.2 C (46.8 F)	25 of 100 (Routine)
Clifton	United States	Record low minimum temperature	17.8 C (64.0 F)	25 of 100 (Routine)

Counts by Type and Timescale

500 records

Records set or tied on 28 July 1973 by type: Highest daily maximum 28, Lowest daily maximum 92, Highest daily minimum 58, Lowest daily minimum 63, Heaviest daily rainfall 259.

Records on 28 July 1973 by type
Record type	Records
Highest daily maximum	28
Lowest daily maximum	92
Highest daily minimum	58
Lowest daily minimum	63
Heaviest daily rainfall	259
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 28 July 1973 by timescale: all-time 1, monthly 7, daily 492.

How Much Records Were Beaten By

412 broken records

Margins by which the 412 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 92.2. Ties are not counted.

Top 20 by Significance

28 July 1973

Top 20 records on 28 July 1973 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
28 July 1973	Castelo Do Piaui (Marvao), BR	daily rain	27.1 mm (1.1 in)	27.1 mm (1.1 in)	60 years	59 of 100 (Notable)
28 July 1973	Jua, BR	daily rain	44.0 mm (1.7 in)	44.0 mm (1.7 in)	38 years	54 of 100 (Notable)
28 July 1973	New Bern 3 NW, US	daily rain	91.4 mm (3.6 in)	61.9 mm (2.4 in)	36 years	51 of 100 (Notable)
28 July 1973	Columbus, US	daily rain	100.3 mm (3.9 in)	92.2 mm (3.6 in)	12 years	50 of 100 (Notable)
28 July 1973	Ojinaga (Smn), MX	daily rain	45.0 mm (1.8 in)	27.2 mm (1.1 in)	44 years	47 of 100 (Notable)
28 July 1973	Varadouro, BR	daily rain	25.0 mm (1.0 in)	23.4 mm (0.9 in)	24 years	46 of 100 (Notable)
28 July 1973	Frecheirinha, BR	daily rain	44.8 mm (1.8 in)	44.8 mm (1.8 in)	39 years	46 of 100 (Notable)
28 July 1973	Sao Jose Dos Campos, BR	daily rain	32.1 mm (1.3 in)	27.4 mm (1.1 in)	8 years	45 of 100 (Notable)
28 July 1973	Castellon de la Plana, ES	daily rain	31.7 mm (1.2 in)	29.9 mm (1.2 in)	32 years	45 of 100 (Notable)
28 July 1973	Ann Arbor U of Mich, US	daily rain	31.2 mm (1.2 in)	18.5 mm (0.7 in)	60 years	43 of 100 (Notable)
28 July 1973	Graca, BR	daily rain	65.4 mm (2.6 in)	47.2 mm (1.9 in)	4 years	42 of 100 (Notable)
28 July 1973	Yalta, UA	daily rain	34.3 mm (1.4 in)	6.9 mm (0.27 in)	87 years	42 of 100 (Notable)
28 July 1973	Jacarei, BR	daily rain	28.7 mm (1.1 in)	22.2 mm (0.9 in)	8 years	41 of 100 (Notable)
28 July 1973	Newark Liberty Intl AP, US	daily high min	24.4 C (75.9 F)	0.5 C (0.9 F)	116 years	41 of 100 (Notable)
28 July 1973	Aquiraz, BR	daily rain	48.0 mm (1.9 in)	40.5 mm (1.6 in)	24 years	39 of 100 (Notable)
28 July 1973	Vilnius, LT	daily rain	44.6 mm (1.8 in)	6.9 mm (0.27 in)	75 years	39 of 100 (Notable)
28 July 1973	La Junta, MX	daily rain	42.2 mm (1.7 in)	17.3 mm (0.7 in)	44 years	39 of 100 (Notable)
28 July 1973	Dunbar Forest Exp STN, US	daily rain	44.2 mm (1.7 in)	37.6 mm (1.5 in)	2 years	39 of 100 (Notable)
28 July 1973	Heinersreuth-Vollhof, DE	daily low max	12.6 C (54.7 F)	1.6 C (2.9 F)	89 years	38 of 100 (Notable)
28 July 1973	Brome, CA	daily rain	29.0 mm (1.1 in)	0.3 mm (0.01 in)	95 years	37 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

1815 to 1973

Records set or tied on this calendar date in each year from 1815 to 1973. 1973 had 500 records.

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

Records on 07-28 in each year
Year	Records
1815	1
1832	2
1834	1
1838	1
1846	1
1848	1
1853	1
1857	1
1860	2
1866	2
1867	1
1872	3
1873	1
1874	1
1882	1
1883	3
1884	3
1886	2
1887	2
1888	3
1890	3
1891	8
1892	3
1893	5
1894	4
1895	6
1896	4
1897	4
1898	6
1900	8
1901	14
1902	4
1903	16
1904	23
1905	10
1906	18
1907	39
1908	15
1909	19
1910	18
1911	61
1912	32
1913	54
1914	42
1915	36
1916	134
1917	84
1918	34
1919	53
1920	95
1921	92
1922	82
1923	193
1924	79
1925	361
1926	175
1927	129
1928	341
1929	215
1930	603
1931	464
1932	184
1933	390
1934	533
1935	354
1936	471
1937	315
1938	264
1939	339
1940	507
1941	525
1942	165
1943	429
1944	349
1945	399
1946	380
1947	630
1948	535
1949	496
1950	1,035
1951	320
1952	669
1953	251
1954	355
1955	537
1956	309
1957	298
1958	549
1959	417
1960	416
1961	357
1962	772
1963	484
1964	422
1965	422
1966	349
1967	458
1968	547
1969	737
1970	343
1971	1,161
1972	675
1973	500
1974	343
1975	537
1976	493
1977	724
1978	681
1979	692
1980	1,170
1981	1,315
1982	774
1983	1,389
1984	1,373
1985	627
1986	868
1987	1,202
1988	761
1989	936
1990	757
1991	768
1992	678
1993	1,026
1994	2,266
1995	1,251
1996	1,178
1997	1,024
1998	1,835
1999	985
2000	857
2001	938
2002	866
2003	932
2004	1,345
2005	1,387
2006	1,398
2007	998
2008	923
2009	964
2010	1,306
2011	1,143
2012	731
2013	1,428
2014	713
2015	911
2016	648
2017	476
2018	655
2019	469
2020	721
2021	831
2022	990
2023	765
2024	668
2025	845
2026	863

Download the Data

Data for records on 1973-07-28: 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	380
20 to 40	23
40 to 60	7
60 to 80	1
80 to 100	1