Weather Records on 23 September 1978

500 weather records were set or tied worldwide on 23 September 1978. Highest significance: Sao Jose Do Egito, BR.

Key Facts for 23 September 1978

On 23 September 1978, 500 weather records were set or tied at long-record stations worldwide.
148 were record highs and 95 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 11 monthly and 487 daily.
Sao Jose Do Egito set a daily record precipitation of 36.4 mm (1.4 in) on 23 September 1978.
Across 169 earlier years (1793 to 2026) the same calendar date averaged 431 records.

Record Map

500 stations

500 station records on 23 September 1978 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 23 September 1978: highest significance records shown on the map
Station	Country	Type	Value	Significance
Sao Jose Do Egito	Brazil	Record daily precipitation	36.4 mm (1.4 in)	61 of 100 (Major)
Tonti (Bos)	South Africa	Record daily precipitation	95.0 mm (3.7 in)	61 of 100 (Major)
Tambe (Itambe)	Brazil	Record daily precipitation	87.0 mm (3.4 in)	57 of 100 (Notable)
Guarabira	Brazil	Record daily precipitation	37.2 mm (1.5 in)	56 of 100 (Notable)
Fran?A	Brazil	Record daily precipitation	40.8 mm (1.6 in)	55 of 100 (Notable)
Monte Santo	Brazil	Record daily precipitation	25.0 mm (1.0 in)	55 of 100 (Notable)
Coruripe	Brazil	Record daily precipitation	45.2 mm (1.8 in)	53 of 100 (Notable)
Motozintla (Smn)	Mexico	Record high maximum temperature	37.2 C (99.0 F)	53 of 100 (Notable)
Cipo de Leite	Brazil	Record daily precipitation	26.0 mm (1.0 in)	52 of 100 (Notable)
Acude Velame	Brazil	Record daily precipitation	28.5 mm (1.1 in)	51 of 100 (Notable)
Kent	United States	Record daily precipitation	50.0 mm (2.0 in)	51 of 100 (Notable)
Tacambaro	Mexico	Record daily precipitation	78.2 mm (3.1 in)	50 of 100 (Notable)
Acude Nova Floresta	Brazil	Record daily precipitation	41.2 mm (1.6 in)	49 of 100 (Notable)
Willapa Harbor	United States	Record daily precipitation	58.2 mm (2.3 in)	48 of 100 (Notable)
Sape	Brazil	Record daily precipitation	49.3 mm (1.9 in)	46 of 100 (Notable)
Naselle 2 ENE	United States	Record daily precipitation	71.6 mm (2.8 in)	46 of 100 (Notable)
Uniao Dos Palmares	Brazil	Record daily precipitation	52.5 mm (2.1 in)	45 of 100 (Notable)
Buckley 1 NE	United States	Record daily precipitation	41.1 mm (1.6 in)	45 of 100 (Notable)
Bloemfontein Kings Park	South Africa	Record daily precipitation	55.0 mm (2.2 in)	44 of 100 (Notable)
Curral Novo	Brazil	Record daily precipitation	39.3 mm (1.5 in)	43 of 100 (Notable)
Traipu	Brazil	Record daily precipitation	30.0 mm (1.2 in)	42 of 100 (Notable)
Groongal (Groongal Station)	Australia	Record daily precipitation	40.0 mm (1.6 in)	41 of 100 (Notable)
Kingsville	United States	Record daily precipitation	66.0 mm (2.6 in)	41 of 100 (Notable)
Aberdeen	United States	Record daily precipitation	62.5 mm (2.5 in)	41 of 100 (Notable)
Grapeview 3 SW	United States	Record daily precipitation	47.8 mm (1.9 in)	40 of 100 (Notable)
Jocotepec	Mexico	Record daily precipitation	64.3 mm (2.5 in)	37 of 100 (Notable)
Orogrande	United States	Record low maximum temperature	15.0 C (59.0 F)	37 of 100 (Notable)
Carius	Brazil	Record daily precipitation	25.0 mm (1.0 in)	36 of 100 (Notable)
Blowing Rock 1NW	United States	Record high maximum temperature	28.3 C (82.9 F)	36 of 100 (Notable)
Beetaloo Reservoir Old Site	Australia	Record daily precipitation	25.6 mm (1.0 in)	35 of 100 (Notable)
Nazare	Brazil	Record daily precipitation	54.7 mm (2.2 in)	35 of 100 (Notable)
Kuujjuaq A	Canada	Record daily snowfall	13.0 cm (5.1 in)	35 of 100 (Notable)
Henderson 2 NNW	United States	Record daily precipitation	34.5 mm (1.4 in)	35 of 100 (Notable)
Sao Luiz Do Quitunde	Brazil	Record daily precipitation	60.6 mm (2.4 in)	34 of 100 (Routine)
San Felipe Orizatlan (Smn)	Mexico	Record daily precipitation	287.8 mm (11.3 in)	34 of 100 (Routine)
Puyallup 2 W Exp STN	United States	Record daily precipitation	44.5 mm (1.8 in)	34 of 100 (Routine)
Shelton	United States	Record daily precipitation	45.0 mm (1.8 in)	34 of 100 (Routine)
Stevens Pass	United States	Record daily precipitation	50.3 mm (2.0 in)	34 of 100 (Routine)
Tacoma City Hall	United States	Record daily precipitation	45.7 mm (1.8 in)	34 of 100 (Routine)
Aquidaba	Brazil	Record daily precipitation	25.0 mm (1.0 in)	33 of 100 (Routine)
Newport News Press Bld	United States	Record daily precipitation	43.9 mm (1.7 in)	33 of 100 (Routine)
Alagoa Nova (Laranjeiras)	Brazil	Record daily precipitation	38.0 mm (1.5 in)	32 of 100 (Routine)
Palmares	Brazil	Record daily precipitation	32.8 mm (1.3 in)	32 of 100 (Routine)
Bellrock	South Africa	Record daily precipitation	27.0 mm (1.1 in)	31 of 100 (Routine)
Lewisburg 3 N	United States	Record high minimum temperature	18.9 C (66.0 F)	31 of 100 (Routine)
Chardzhev	Turkmenistan	Record high maximum temperature	36.2 C (97.2 F)	30 of 100 (Routine)
Mesa	United States	Record high minimum temperature	23.9 C (75.0 F)	30 of 100 (Routine)
Hopewell	United States	Record daily precipitation	140.7 mm (5.5 in)	30 of 100 (Routine)
Centralia	United States	Record daily precipitation	40.1 mm (1.6 in)	30 of 100 (Routine)
Vellore	India	Record daily precipitation	50.0 mm (2.0 in)	29 of 100 (Routine)
Ohotsk	Russia	Record daily precipitation	33.9 mm (1.3 in)	29 of 100 (Routine)
Gila Bend 2SE	United States	Record high minimum temperature	26.7 C (80.1 F)	29 of 100 (Routine)
Pinopolis Dam	United States	Record daily precipitation	57.9 mm (2.3 in)	29 of 100 (Routine)
Mud Mtn Dam	United States	Record daily precipitation	44.7 mm (1.8 in)	29 of 100 (Routine)
Bananeiras	Brazil	Record daily precipitation	29.0 mm (1.1 in)	28 of 100 (Routine)
Sao Miguel Dos Campos	Brazil	Record daily precipitation	33.7 mm (1.3 in)	28 of 100 (Routine)
Arteaga (Smn)	Mexico	Record daily precipitation	59.9 mm (2.4 in)	28 of 100 (Routine)
Presa Venustiano Carranza	Mexico	Record daily precipitation	69.9 mm (2.8 in)	28 of 100 (Routine)
Los Ramones	Mexico	Record daily precipitation	114.8 mm (4.5 in)	27 of 100 (Routine)
Oakville	United States	Record daily precipitation	39.4 mm (1.6 in)	27 of 100 (Routine)

Counts by Type and Timescale

500 records

Records set or tied on 23 September 1978 by type: Highest daily maximum 77, Lowest daily maximum 54, Highest daily minimum 71, Lowest daily minimum 41, Heaviest daily rainfall 255, Heaviest daily snowfall 1, Deepest snow cover 1.

Records on 23 September 1978 by type
Record type	Records
Highest daily maximum	77
Lowest daily maximum	54
Highest daily minimum	71
Lowest daily minimum	41
Heaviest daily rainfall	255
Heaviest daily snowfall	1
Deepest snow cover	1

Records on 23 September 1978 by timescale: all-time 2, monthly 11, daily 487.

How Much Records Were Beaten By

414 broken records

Margins by which the 414 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 400.0. Ties are not counted.

Top 20 by Significance

23 September 1978

Top 20 records on 23 September 1978 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
23 September 1978	Sao Jose Do Egito, BR	daily rain	36.4 mm (1.4 in)	36.4 mm (1.4 in)	64 years	61 of 100 (Major)
23 September 1978	Tonti (Bos), ZA	daily rain	95.0 mm (3.7 in)	79.5 mm (3.1 in)	52 years	61 of 100 (Major)
23 September 1978	Tambe (Itambe), BR	monthly rain	87.0 mm (3.4 in)	37.0 mm (1.5 in)	3 years	57 of 100 (Notable)
23 September 1978	Guarabira, BR	daily rain	37.2 mm (1.5 in)	31.7 mm (1.2 in)	60 years	56 of 100 (Notable)
23 September 1978	Fran?A, BR	daily rain	40.8 mm (1.6 in)	29.2 mm (1.1 in)	44 years	55 of 100 (Notable)
23 September 1978	Monte Santo, BR	daily rain	25.0 mm (1.0 in)	18.0 mm (0.7 in)	32 years	55 of 100 (Notable)
23 September 1978	Coruripe, BR	daily rain	45.2 mm (1.8 in)	38.8 mm (1.5 in)	32 years	53 of 100 (Notable)
23 September 1978	Motozintla (Smn), MX	daily high max	37.2 C (99.0 F)	6.6 C (11.9 F)	53 years	53 of 100 (Notable)
23 September 1978	Cipo de Leite, BR	daily rain	26.0 mm (1.0 in)	20.6 mm (0.8 in)	33 years	52 of 100 (Notable)
23 September 1978	Acude Velame, BR	monthly rain	28.5 mm (1.1 in)	19.5 mm (0.8 in)	57 years	51 of 100 (Notable)
23 September 1978	Kent, US	daily rain	50.0 mm (2.0 in)	23.8 mm (0.9 in)	44 years	51 of 100 (Notable)
23 September 1978	Tacambaro, MX	daily rain	78.2 mm (3.1 in)	38.3 mm (1.5 in)	43 years	50 of 100 (Notable)
23 September 1978	Acude Nova Floresta, BR	daily rain	41.2 mm (1.6 in)	27.9 mm (1.1 in)	56 years	49 of 100 (Notable)
23 September 1978	Willapa Harbor, US	daily rain	58.2 mm (2.3 in)	25.4 mm (1.0 in)	57 years	48 of 100 (Notable)
23 September 1978	Sape, BR	daily rain	49.3 mm (1.9 in)	40.3 mm (1.6 in)	4 years	46 of 100 (Notable)
23 September 1978	Naselle 2 ENE, US	daily rain	71.6 mm (2.8 in)	40.1 mm (1.6 in)	44 years	46 of 100 (Notable)
23 September 1978	Uniao Dos Palmares, BR	daily rain	52.5 mm (2.1 in)	36.0 mm (1.4 in)	0 years	45 of 100 (Notable)
23 September 1978	Buckley 1 NE, US	daily rain	41.1 mm (1.6 in)	18.2 mm (0.7 in)	53 years	45 of 100 (Notable)
23 September 1978	Bloemfontein Kings Park, ZA	daily rain	55.0 mm (2.2 in)	42.5 mm (1.7 in)	20 years	44 of 100 (Notable)
23 September 1978	Curral Novo, BR	daily rain	39.3 mm (1.5 in)	36.8 mm (1.4 in)	12 years	43 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

1793 to 1978

Records set or tied on this calendar date in each year from 1793 to 1978. 1978 had 500 records.

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

Records on 09-23 in each year
Year	Records
1793	1
1796	1
1799	1
1804	1
1832	1
1835	1
1838	1
1842	3
1843	1
1845	2
1848	1
1849	1
1850	1
1851	2
1854	3
1855	1
1859	2
1864	1
1865	1
1866	1
1868	1
1871	1
1872	1
1874	1
1875	1
1876	1
1877	1
1881	4
1882	2
1885	1
1886	1
1887	1
1888	1
1889	3
1890	2
1891	1
1892	2
1893	4
1895	9
1896	5
1897	1
1898	2
1899	4
1900	4
1901	2
1902	6
1903	7
1904	19
1905	6
1906	6
1907	19
1908	19
1909	15
1910	8
1911	11
1912	15
1913	22
1914	29
1915	25
1916	324
1917	56
1918	34
1919	40
1920	44
1921	47
1922	34
1923	74
1924	194
1925	223
1926	459
1927	247
1928	382
1929	198
1930	472
1931	600
1932	383
1933	281
1934	361
1935	239
1936	377
1937	557
1938	389
1939	279
1940	374
1941	490
1942	557
1943	322
1944	381
1945	652
1946	623
1947	803
1948	259
1949	496
1950	267
1951	462
1952	432
1953	271
1954	324
1955	852
1956	299
1957	539
1958	641
1959	307
1960	470
1961	670
1962	344
1963	568
1964	322
1965	783
1966	528
1967	341
1968	481
1969	450
1970	1,457
1971	578
1972	461
1973	674
1974	1,543
1975	1,038
1976	463
1977	616
1978	500
1979	586
1980	1,037
1981	717
1982	775
1983	1,744
1984	1,121
1985	924
1986	740
1987	1,077
1988	653
1989	1,376
1990	702
1991	519
1992	976
1993	983
1994	1,140
1995	1,868
1996	809
1997	1,060
1998	1,326
1999	1,207
2000	2,026
2001	790
2002	930
2003	1,243
2004	986
2005	1,207
2006	1,509
2007	1,153
2008	835
2009	1,201
2010	1,360
2011	666
2012	785
2013	573
2014	595
2015	587
2016	774
2017	1,371
2018	693
2019	565
2020	618
2021	602
2022	551
2023	812
2024	499
2025	449
2026	384

Download the Data

Data for records on 1978-09-23: 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 50	410
50 to 100	2
100 to 150	1
150 to 200	0
200 to 250	0
250 to 300	0
300 to 350	0
350 to 400	1