Weather Records on 25 September 1978

462 weather records were set or tied worldwide on 25 September 1978. Highest significance: Porongorup, AU.

Key Facts for 25 September 1978

On 25 September 1978, 462 weather records were set or tied at long-record stations worldwide.
226 were record highs and 88 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 14 monthly and 447 daily.
Porongorup set a daily record precipitation of 60.0 mm (2.4 in) on 25 September 1978.
Across 163 earlier years (1825 to 2026) the same calendar date averaged 426 records.

Record Map

462 stations

462 station records on 25 September 1978 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 25 September 1978: highest significance records shown on the map
Station	Country	Type	Value	Significance
Porongorup	Australia	Record daily precipitation	60.0 mm (2.4 in)	60 of 100 (Major)
Hope	United States	Record daily precipitation	83.8 mm (3.3 in)	56 of 100 (Notable)
Carlsbad	United States	Record daily precipitation	66.5 mm (2.6 in)	54 of 100 (Notable)
Red Bluff Dam	United States	Record daily precipitation	108.0 mm (4.3 in)	53 of 100 (Notable)
Camargo (Smn)	Mexico	Record daily precipitation	84.8 mm (3.3 in)	50 of 100 (Notable)
Cuauhtemoc	Mexico	Record daily precipitation	57.9 mm (2.3 in)	46 of 100 (Notable)
San Luis Obispo Poly	United States	Record high minimum temperature	21.7 C (71.1 F)	43 of 100 (Notable)
Elk	United States	Record daily precipitation	49.5 mm (1.9 in)	42 of 100 (Notable)
Kalgan River	Australia	Record daily precipitation	30.0 mm (1.2 in)	41 of 100 (Notable)
Idalia	South Africa	Record daily precipitation	41.0 mm (1.6 in)	40 of 100 (Notable)
Lake Avalon	United States	Record daily precipitation	69.3 mm (2.7 in)	40 of 100 (Notable)
Delicias (Dge)	Mexico	Record daily precipitation	46.0 mm (1.8 in)	37 of 100 (Notable)
Novosibirsk	Russia	Record daily precipitation	37.1 mm (1.5 in)	37 of 100 (Notable)
Lukojanov	Russia	Record daily precipitation	35.8 mm (1.4 in)	36 of 100 (Notable)
Cornudas Svc STN	United States	Record daily precipitation	57.2 mm (2.3 in)	36 of 100 (Notable)
Yellanup	Australia	Record daily precipitation	33.2 mm (1.3 in)	35 of 100 (Notable)
Van Horn	United States	Record daily precipitation	87.9 mm (3.5 in)	35 of 100 (Notable)
Claremont Pomona Clg	United States	Record high minimum temperature	20.0 C (68.0 F)	34 of 100 (Routine)
Tampico	United States	Record daily precipitation	50.8 mm (2.0 in)	34 of 100 (Routine)
Grenfell	Canada	Record high minimum temperature	10.6 C (51.1 F)	33 of 100 (Routine)
Tartu	Estonia	Record low maximum temperature	4.7 C (40.5 F)	33 of 100 (Routine)
Coalcoman (Smn)	Mexico	Record daily precipitation	66.8 mm (2.6 in)	33 of 100 (Routine)
Chula Vista	United States	Record high minimum temperature	22.8 C (73.0 F)	33 of 100 (Routine)
Newark	United States	Record high minimum temperature	21.1 C (70.0 F)	33 of 100 (Routine)
Leroy 5 WSW	United States	Record high minimum temperature	12.8 C (55.0 F)	33 of 100 (Routine)
Kenton	United States	Record daily precipitation	35.6 mm (1.4 in)	32 of 100 (Routine)
Tartu-Toravere	Estonia	Record low maximum temperature	4.9 C (40.8 F)	31 of 100 (Routine)
San Nicolas Is	United States	Record high minimum temperature	21.7 C (71.1 F)	31 of 100 (Routine)
Presa Rodriguez	Mexico	Record high minimum temperature	22.8 C (73.0 F)	30 of 100 (Routine)
Presa Francisco I. Madero	Mexico	Record daily precipitation	33.8 mm (1.3 in)	30 of 100 (Routine)
Carlsbad Caverns	United States	Record daily precipitation	106.7 mm (4.2 in)	30 of 100 (Routine)
Sanderson	United States	Record daily precipitation	39.9 mm (1.6 in)	30 of 100 (Routine)
Correntes	Brazil	Record daily precipitation	65.0 mm (2.6 in)	29 of 100 (Routine)
Angermunde	Germany	Record high minimum temperature	13.8 C (56.8 F)	29 of 100 (Routine)
Ojo Caliente	Mexico	Record daily precipitation	79.8 mm (3.1 in)	29 of 100 (Routine)
Montevallo	United States	Record daily precipitation	33.5 mm (1.3 in)	29 of 100 (Routine)
Port Lincoln (Woolga)	Australia	Record daily precipitation	30.6 mm (1.2 in)	28 of 100 (Routine)
Santa Cruz-Litoral	Brazil	Record daily precipitation	48.0 mm (1.9 in)	28 of 100 (Routine)
Balleza	Mexico	Record daily precipitation	34.8 mm (1.4 in)	28 of 100 (Routine)
Paardekopplaas	South Africa	Record daily precipitation	33.0 mm (1.3 in)	28 of 100 (Routine)
Culver City	United States	Record high minimum temperature	24.4 C (75.9 F)	28 of 100 (Routine)
Artesia 6S	United States	Record daily precipitation	52.6 mm (2.1 in)	28 of 100 (Routine)
Vaughn	United States	Record daily precipitation	25.4 mm (1.0 in)	28 of 100 (Routine)
Cavern City AP	United States	Record daily precipitation	83.1 mm (3.3 in)	28 of 100 (Routine)
N Is NAS	United States	Record high maximum temperature	37.2 C (99.0 F)	28 of 100 (Routine)
Szombathely	Hungary	Record high maximum temperature	28.8 C (83.8 F)	27 of 100 (Routine)
Karsakpaj	Kazakhstan	Record high minimum temperature	17.1 C (62.8 F)	27 of 100 (Routine)
Lysebotn	Norway	Record daily precipitation	36.1 mm (1.4 in)	27 of 100 (Routine)
Pomona/Fairplex	United States	Record high minimum temperature	21.1 C (70.0 F)	27 of 100 (Routine)
Elk	United States	Record low maximum temperature	12.8 C (55.0 F)	27 of 100 (Routine)
Tashkent	Uzbekistan	Record high maximum temperature	33.7 C (92.7 F)	27 of 100 (Routine)
Motozintla (Smn)	Mexico	Record high maximum temperature	34.4 C (93.9 F)	26 of 100 (Routine)
Santa Paula	United States	Record high minimum temperature	20.6 C (69.1 F)	26 of 100 (Routine)
U C L A	United States	Record high minimum temperature	28.3 C (82.9 F)	26 of 100 (Routine)
Tularosa	United States	Record low maximum temperature	18.3 C (64.9 F)	26 of 100 (Routine)
Naalehu 14	United States	Record low minimum temperature	17.2 C (63.0 F)	26 of 100 (Routine)
Los Herreras	Mexico	Record daily precipitation	76.7 mm (3.0 in)	25 of 100 (Routine)
Ternej	Russia	Record high maximum temperature	24.0 C (75.2 F)	25 of 100 (Routine)
Culver City	United States	Record high maximum temperature	41.1 C (106.0 F)	25 of 100 (Routine)
Manistique Wwtp	United States	Record high maximum temperature	23.9 C (75.0 F)	25 of 100 (Routine)

Counts by Type and Timescale

462 records

Records set or tied on 25 September 1978 by type: Highest daily maximum 102, Lowest daily maximum 67, Highest daily minimum 124, Lowest daily minimum 21, Heaviest daily rainfall 143, Deepest snow cover 5.

Records on 25 September 1978 by type
Record type	Records
Highest daily maximum	102
Lowest daily maximum	67
Highest daily minimum	124
Lowest daily minimum	21
Heaviest daily rainfall	143
Heaviest daily snowfall	0
Deepest snow cover	5

Records on 25 September 1978 by timescale: all-time 1, monthly 14, daily 447.

How Much Records Were Beaten By

362 broken records

Margins by which the 362 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 500.0. Ties are not counted.

Top 20 by Significance

25 September 1978

Top 20 records on 25 September 1978 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
25 September 1978	Porongorup, AU	daily rain	60.0 mm (2.4 in)	29.0 mm (1.1 in)	48 years	60 of 100 (Major)
25 September 1978	Hope, US	daily rain	83.8 mm (3.3 in)	60.4 mm (2.4 in)	45 years	56 of 100 (Notable)
25 September 1978	Carlsbad, US	daily rain	66.5 mm (2.6 in)	38.3 mm (1.5 in)	63 years	54 of 100 (Notable)
25 September 1978	Red Bluff Dam, US	monthly rain	108.0 mm (4.3 in)	47.8 mm (1.9 in)	9 years	53 of 100 (Notable)
25 September 1978	Camargo (Smn), MX	monthly rain	84.8 mm (3.3 in)	20.0 mm (0.8 in)	50 years	50 of 100 (Notable)
25 September 1978	Cuauhtemoc, MX	daily rain	57.9 mm (2.3 in)	32.0 mm (1.3 in)	35 years	46 of 100 (Notable)
25 September 1978	San Luis Obispo Poly, US	daily high min	21.7 C (71.1 F)	6.1 C (11.0 F)	39 years	43 of 100 (Notable)
25 September 1978	Elk, US	daily rain	49.5 mm (1.9 in)	36.8 mm (1.4 in)	16 years	42 of 100 (Notable)
25 September 1978	Kalgan River, AU	daily rain	30.0 mm (1.2 in)	12.7 mm (0.5 in)	52 years	41 of 100 (Notable)
25 September 1978	Idalia, ZA	daily rain	41.0 mm (1.6 in)	31.0 mm (1.2 in)	20 years	40 of 100 (Notable)
25 September 1978	Lake Avalon, US	daily rain	69.3 mm (2.7 in)	45.7 mm (1.8 in)	16 years	40 of 100 (Notable)
25 September 1978	Delicias (Dge), MX	daily rain	46.0 mm (1.8 in)	22.1 mm (0.9 in)	33 years	37 of 100 (Notable)
25 September 1978	Novosibirsk, RU	monthly rain	37.1 mm (1.5 in)	5.7 mm (0.22 in)	21 years	37 of 100 (Notable)
25 September 1978	Lukojanov, RU	daily rain	35.8 mm (1.4 in)	13.2 mm (0.5 in)	20 years	36 of 100 (Notable)
25 September 1978	Cornudas Svc STN, US	daily rain	57.2 mm (2.3 in)	42.0 mm (1.7 in)	16 years	36 of 100 (Notable)
25 September 1978	Yellanup, AU	daily rain	33.2 mm (1.3 in)	10.1 mm (0.4 in)	48 years	35 of 100 (Notable)
25 September 1978	Van Horn, US	monthly rain	87.9 mm (3.5 in)	11.7 mm (0.5 in)	37 years	35 of 100 (Notable)
25 September 1978	Claremont Pomona Clg, US	daily high min	20.0 C (68.0 F)	1.7 C (3.1 F)	72 years	34 of 100 (Routine)
25 September 1978	Tampico, US	daily rain	50.8 mm (2.0 in)	30.7 mm (1.2 in)	28 years	34 of 100 (Routine)
25 September 1978	Grenfell, CA	daily high min	10.6 C (51.1 F)	1.2 C (2.2 F)	76 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

1825 to 1978

Records set or tied on this calendar date in each year from 1825 to 1978. 1978 had 462 records.

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

Records on 09-25 in each year
Year	Records
1825	1
1834	1
1836	1
1842	1
1843	1
1847	1
1851	1
1852	1
1855	1
1857	2
1859	1
1860	1
1863	1
1865	1
1866	2
1867	2
1868	1
1871	2
1872	1
1874	1
1875	1
1877	3
1879	2
1881	3
1884	3
1885	6
1886	1
1887	3
1889	7
1891	3
1893	7
1894	3
1895	5
1896	5
1897	2
1898	1
1899	2
1900	7
1901	6
1902	11
1903	4
1904	10
1905	16
1906	7
1907	35
1908	20
1909	22
1910	5
1911	9
1912	63
1913	13
1914	15
1915	43
1916	139
1917	138
1918	16
1919	20
1920	75
1921	32
1922	47
1923	68
1924	157
1925	141
1926	740
1927	166
1928	480
1929	158
1930	489
1931	500
1932	260
1933	542
1934	394
1935	258
1936	274
1937	190
1938	335
1939	454
1940	517
1941	269
1942	970
1943	488
1944	246
1945	514
1946	292
1947	666
1948	501
1949	479
1950	1,163
1951	639
1952	515
1953	242
1954	292
1955	546
1956	503
1957	231
1958	454
1959	396
1960	694
1961	530
1962	305
1963	602
1964	403
1965	690
1966	334
1967	428
1968	300
1969	196
1970	783
1971	323
1972	706
1973	650
1974	995
1975	1,166
1976	541
1977	875
1978	462
1979	719
1980	687
1981	669
1982	759
1983	647
1984	1,305
1985	446
1986	1,766
1987	560
1988	571
1989	1,367
1990	875
1991	1,243
1992	1,346
1993	1,015
1994	666
1995	1,013
1996	648
1997	1,278
1998	1,346
1999	804
2000	1,536
2001	1,536
2002	876
2003	758
2004	519
2005	1,484
2006	767
2007	1,284
2008	766
2009	854
2010	1,125
2011	763
2012	505
2013	615
2014	800
2015	868
2016	781
2017	1,253
2018	648
2019	530
2020	1,089
2021	355
2022	301
2023	580
2024	1,120
2025	569
2026	473

Download the Data

Data for records on 1978-09-25: 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 100	361
100 to 200	0
200 to 300	0
300 to 400	0
400 to 500	1