Weather Records on 28 September 1990

414 weather records were set or tied worldwide on 28 September 1990. Highest significance: Mwanza, TZ.

Key Facts for 28 September 1990

On 28 September 1990, 414 weather records were set or tied at long-record stations worldwide.
188 were record highs and 55 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 9 monthly and 404 daily.
Mwanza set a monthly record daily precipitation of 102.1 mm (4.0 in) on 28 September 1990.
Across 162 earlier years (1794 to 2026) the same calendar date averaged 428 records.

Record Map

414 stations

414 station records on 28 September 1990 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 28 September 1990: highest significance records shown on the map
Station	Country	Type	Value	Significance
Mwanza	Tanzania	Record daily precipitation	102.1 mm (4.0 in)	66 of 100 (Major)
Maceio (Aeroporto)	Brazil	Record daily precipitation	55.1 mm (2.2 in)	62 of 100 (Major)
Tres Piedras	United States	Record daily precipitation	38.1 mm (1.5 in)	57 of 100 (Notable)
Kabansk	Russia	Record daily precipitation	34.3 mm (1.4 in)	45 of 100 (Notable)
Mason City 4SE	United States	Record daily precipitation	35.8 mm (1.4 in)	43 of 100 (Notable)
Jal	United States	Record daily precipitation	40.9 mm (1.6 in)	43 of 100 (Notable)
Los Alamos	United States	Record daily precipitation	27.2 mm (1.1 in)	42 of 100 (Notable)
Klamath Falls 2 SSW	United States	Record high minimum temperature	13.3 C (55.9 F)	42 of 100 (Notable)
Kailiili 436	United States	Record daily precipitation	329.2 mm (13.0 in)	39 of 100 (Notable)
Gorjacinsk	Russia	Record daily precipitation	28.9 mm (1.1 in)	37 of 100 (Notable)
Perth Regional Office	Australia	Record high maximum temperature	30.7 C (87.3 F)	36 of 100 (Notable)
San Francisco	Mexico	Record high minimum temperature	22.8 C (73.0 F)	36 of 100 (Notable)
Glorieta	United States	Record daily precipitation	29.2 mm (1.1 in)	36 of 100 (Notable)
Dalhart FAA AP	United States	Record daily precipitation	34.8 mm (1.4 in)	36 of 100 (Notable)
Viljujsk	Russia	Record high minimum temperature	6.1 C (43.0 F)	34 of 100 (Routine)
Wandering Comparison	Australia	Record high maximum temperature	27.4 C (81.3 F)	33 of 100 (Routine)
Karawatha Park	Australia	Record daily precipitation	52.0 mm (2.0 in)	33 of 100 (Routine)
Northam	Australia	Record high maximum temperature	30.5 C (86.9 F)	32 of 100 (Routine)
Cape Bruny Lighthouse	Australia	Record low minimum temperature	-2.0 C (28.4 F)	32 of 100 (Routine)
Ra-Iz	Russia	Record daily precipitation	30.8 mm (1.2 in)	31 of 100 (Routine)
Grant City	United States	Record daily precipitation	34.3 mm (1.4 in)	31 of 100 (Routine)
Narrogin	Australia	Record high maximum temperature	26.7 C (80.1 F)	30 of 100 (Routine)
Shimizu	Japan	Record daily precipitation	127.0 mm (5.0 in)	30 of 100 (Routine)
Ekaterino-Nikolskoe	Russia	Record daily precipitation	34.2 mm (1.3 in)	30 of 100 (Routine)
Monte Vista 2W	United States	Record daily precipitation	32.0 mm (1.3 in)	30 of 100 (Routine)
Puente Colgante	Mexico	Record high minimum temperature	26.1 C (79.0 F)	29 of 100 (Routine)
Suhaja	Russia	Record daily precipitation	49.0 mm (1.9 in)	29 of 100 (Routine)
Greenville	United States	Record high minimum temperature	23.9 C (75.0 F)	29 of 100 (Routine)
Tacony 13 SE	United States	Record daily precipitation	26.9 mm (1.1 in)	29 of 100 (Routine)
Clover Valley	United States	Record high minimum temperature	10.6 C (51.1 F)	29 of 100 (Routine)
Wales	United States	Record snow depth	10.2 cm (4.0 in)	29 of 100 (Routine)
York Post Office	Australia	Record high maximum temperature	30.3 C (86.5 F)	27 of 100 (Routine)
Indore	India	Record daily precipitation	70.1 mm (2.8 in)	27 of 100 (Routine)
Smidovich	Russia	Record daily precipitation	48.9 mm (1.9 in)	27 of 100 (Routine)
Lake City	United States	Record daily precipitation	31.0 mm (1.2 in)	27 of 100 (Routine)
Geraldton Airport	Australia	Record high maximum temperature	33.9 C (93.0 F)	26 of 100 (Routine)
Pecs Pogany	Hungary	Record low minimum temperature	0.7 C (33.3 F)	26 of 100 (Routine)
Huejotzingo	Mexico	Record high maximum temperature	30.0 C (86.0 F)	26 of 100 (Routine)
Vladivostok	Russia	Record daily precipitation	54.7 mm (2.2 in)	26 of 100 (Routine)
Council	United States	Record high minimum temperature	15.0 C (59.0 F)	25 of 100 (Routine)
Ust-Maja	Russia	Record high maximum temperature	14.5 C (58.1 F)	24 of 100 (Routine)
Sugarloaf Rsvr	United States	Record daily snowfall	7.6 cm (3.0 in)	24 of 100 (Routine)
Cambridge	United States	Record high minimum temperature	16.1 C (61.0 F)	24 of 100 (Routine)
Clarksville 2NE	United States	Record high maximum temperature	37.2 C (99.0 F)	24 of 100 (Routine)
Guaira	Brazil	Record daily precipitation	58.8 mm (2.3 in)	23 of 100 (Routine)
Hopelchen	Mexico	Record high maximum temperature	36.7 C (98.1 F)	23 of 100 (Routine)
Birobidzhan	Russia	Record daily precipitation	31.0 mm (1.2 in)	23 of 100 (Routine)
Lake City	United States	Record low maximum temperature	10.0 C (50.0 F)	23 of 100 (Routine)
Brookfield	United States	Record daily precipitation	37.1 mm (1.5 in)	23 of 100 (Routine)
Carnarvon Airport	Australia	Record high maximum temperature	36.6 C (97.9 F)	22 of 100 (Routine)
Perth Airport	Australia	Record high maximum temperature	29.2 C (84.6 F)	22 of 100 (Routine)
Misurata	Libya	Record high minimum temperature	25.8 C (78.4 F)	22 of 100 (Routine)
San Cristobal	Mexico	Record high minimum temperature	20.6 C (69.1 F)	22 of 100 (Routine)
Tenerife/Los Rodeos	Spain	Record high minimum temperature	20.6 C (69.1 F)	22 of 100 (Routine)
Conconully	United States	Record high minimum temperature	11.1 C (52.0 F)	21 of 100 (Routine)
Gustavus	United States	Record daily precipitation	43.2 mm (1.7 in)	21 of 100 (Routine)
Gunnison 3SW	United States	Record daily precipitation	21.8 mm (0.9 in)	20 of 100 (Routine)
Telluride 4WNW	United States	Record daily precipitation	22.9 mm (0.9 in)	20 of 100 (Routine)
Petrovskij Zavod	Russia	Record daily precipitation	18.1 mm (0.7 in)	20 of 100 (Routine)
Solnethnaya	Russia	Record daily precipitation	24.0 mm (0.9 in)	20 of 100 (Routine)

Counts by Type and Timescale

414 records

Records set or tied on 28 September 1990 by type: Highest daily maximum 92, Lowest daily maximum 10, Highest daily minimum 96, Lowest daily minimum 45, Heaviest daily rainfall 169, Heaviest daily snowfall 1, Deepest snow cover 1.

Records on 28 September 1990 by type
Record type	Records
Highest daily maximum	92
Lowest daily maximum	10
Highest daily minimum	96
Lowest daily minimum	45
Heaviest daily rainfall	169
Heaviest daily snowfall	1
Deepest snow cover	1

Records on 28 September 1990 by timescale: all-time 1, monthly 9, daily 404.

How Much Records Were Beaten By

315 broken records

Margins by which the 315 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 102.0. Ties are not counted.

Top 20 by Significance

28 September 1990

Top 20 records on 28 September 1990 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
28 September 1990	Mwanza, TZ	monthly rain	102.1 mm (4.0 in)	47.7 mm (1.9 in)	40 years	66 of 100 (Major)
28 September 1990	Maceio (Aeroporto), BR	daily rain	55.1 mm (2.2 in)	41.6 mm (1.6 in)	64 years	62 of 100 (Major)
28 September 1990	Tres Piedras, US	daily rain	38.1 mm (1.5 in)	25.4 mm (1.0 in)	47 years	57 of 100 (Notable)
28 September 1990	Kabansk, RU	daily rain	34.3 mm (1.4 in)	25.1 mm (1.0 in)	8 years	45 of 100 (Notable)
28 September 1990	Mason City 4SE, US	daily rain	35.8 mm (1.4 in)	30.7 mm (1.2 in)	41 years	43 of 100 (Notable)
28 September 1990	Jal, US	daily rain	40.9 mm (1.6 in)	24.4 mm (1.0 in)	64 years	43 of 100 (Notable)
28 September 1990	Los Alamos, US	daily rain	27.2 mm (1.1 in)	14.5 mm (0.6 in)	53 years	42 of 100 (Notable)
28 September 1990	Klamath Falls 2 SSW, US	daily high min	13.3 C (55.9 F)	1.1 C (2.0 F)	101 years	42 of 100 (Notable)
28 September 1990	Kailiili 436, US	monthly rain	329.2 mm (13.0 in)	49.0 mm (1.9 in)	6 years	39 of 100 (Notable)
28 September 1990	Gorjacinsk, RU	daily rain	28.9 mm (1.1 in)	15.9 mm (0.6 in)	19 years	37 of 100 (Notable)
28 September 1990	Perth Regional Office, AU	daily high max	30.7 C (87.3 F)	0.5 C (0.9 F)	89 years	36 of 100 (Notable)
28 September 1990	San Francisco, MX	daily high min	22.8 C (73.0 F)	2.8 C (5.0 F)	40 years	36 of 100 (Notable)
28 September 1990	Glorieta, US	daily rain	29.2 mm (1.1 in)	15.2 mm (0.6 in)	40 years	36 of 100 (Notable)
28 September 1990	Dalhart FAA AP, US	daily rain	34.8 mm (1.4 in)	33.8 mm (1.3 in)	5 years	36 of 100 (Notable)
28 September 1990	Viljujsk, RU	daily high min	6.1 C (43.0 F)	0.7 C (1.3 F)	80 years	34 of 100 (Routine)
28 September 1990	Wandering Comparison, AU	daily high max	27.4 C (81.3 F)	0.7 C (1.3 F)	76 years	33 of 100 (Routine)
28 September 1990	Karawatha Park, AU	daily rain	52.0 mm (2.0 in)	31.0 mm (1.2 in)	1 year	33 of 100 (Routine)
28 September 1990	Northam, AU	daily high max	30.5 C (86.9 F)	0.8 C (1.4 F)	76 years	32 of 100 (Routine)
28 September 1990	Cape Bruny Lighthouse, AU	all-time low min	-2.0 C (28.4 F)	0.3 C (0.5 F)	29 years	32 of 100 (Routine)
28 September 1990	Ra-Iz, RU	daily rain	30.8 mm (1.2 in)	12.1 mm (0.5 in)	39 years	31 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

1794 to 1990

Records set or tied on this calendar date in each year from 1794 to 1990. 1990 had 414 records.

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

Records on 09-28 in each year
Year	Records
1794	1
1826	1
1832	1
1849	2
1851	1
1854	2
1855	2
1859	1
1862	1
1864	1
1866	1
1867	3
1868	1
1869	2
1873	3
1874	3
1877	3
1878	1
1879	1
1880	2
1881	3
1883	2
1884	1
1885	4
1887	1
1888	1
1890	4
1891	2
1892	3
1893	1
1894	6
1895	5
1896	3
1897	5
1898	4
1899	6
1900	9
1901	2
1902	5
1903	19
1904	17
1905	17
1906	37
1907	27
1908	23
1909	16
1910	39
1911	62
1912	32
1913	37
1914	28
1915	57
1916	61
1917	35
1918	55
1919	38
1920	23
1921	39
1922	34
1923	150
1924	139
1925	191
1926	305
1927	194
1928	205
1929	432
1930	116
1931	233
1932	195
1933	459
1934	237
1935	282
1936	502
1937	313
1938	311
1939	552
1940	419
1941	479
1942	1,187
1943	440
1944	367
1945	1,034
1946	347
1947	647
1948	617
1949	359
1950	233
1951	441
1952	366
1953	842
1954	512
1955	409
1956	590
1957	695
1958	509
1959	874
1960	226
1961	385
1962	705
1963	666
1964	723
1965	582
1966	477
1967	978
1968	262
1969	244
1970	932
1971	954
1972	671
1973	886
1974	583
1975	502
1976	900
1977	784
1978	513
1979	915
1980	750
1981	752
1982	1,001
1983	941
1984	1,326
1985	1,189
1986	1,264
1987	825
1988	623
1989	847
1990	414
1991	821
1992	643
1993	627
1994	836
1995	794
1996	1,069
1997	681
1998	1,541
1999	1,533
2000	652
2001	791
2002	743
2003	929
2004	852
2005	1,088
2006	704
2007	837
2008	536
2009	792
2010	1,139
2011	1,025
2012	624
2013	790
2014	878
2015	673
2016	520
2017	755
2018	527
2019	1,388
2020	531
2021	740
2022	727
2023	772
2024	1,364
2025	464
2026	531

Download the Data

Data for records on 1990-09-28: 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	300
20 to 40	9
40 to 60	5
60 to 80	0
80 to 100	0
100 to 120	1