Weather Records on 30 August 1990

983 weather records were set or tied worldwide on 30 August 1990. Highest significance: Walnut Creek, US.

Key Facts for 30 August 1990

On 30 August 1990, 983 weather records were set or tied at long-record stations worldwide.
622 were record highs and 73 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 26 monthly and 956 daily.
Walnut Creek set a daily record precipitation of 57.2 mm (2.3 in) on 30 August 1990.
Across 169 earlier years (1806 to 2026) the same calendar date averaged 420 records.

Record Map

983 stations

983 station records on 30 August 1990 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 August 1990: highest significance records shown on the map
Station	Country	Type	Value	Significance
Walnut Creek	United States	Record daily precipitation	57.2 mm (2.3 in)	64 of 100 (Major)
Mapumulo (Tnk)	South Africa	Record daily precipitation	65.5 mm (2.6 in)	53 of 100 (Notable)
Sao Joao de Petropolis	Brazil	Record daily precipitation	48.0 mm (1.9 in)	52 of 100 (Notable)
Baixo Guandu	Brazil	Record daily precipitation	57.0 mm (2.2 in)	51 of 100 (Notable)
Kailiili 436	United States	Record daily precipitation	140.0 mm (5.5 in)	51 of 100 (Notable)
Guanhaes	Brazil	Record daily precipitation	48.6 mm (1.9 in)	50 of 100 (Notable)
Fazenda Jucuruaba	Brazil	Record daily precipitation	96.0 mm (3.8 in)	49 of 100 (Notable)
Nakhon Phanom	Thailand	Record daily precipitation	196.1 mm (7.7 in)	49 of 100 (Notable)
Santa Cruz-Caparao (Dnos)	Brazil	Record daily precipitation	31.4 mm (1.2 in)	48 of 100 (Notable)
Clover Valley	United States	Record high minimum temperature	18.9 C (66.0 F)	48 of 100 (Notable)
Morro Do Pilar	Brazil	Record daily precipitation	43.0 mm (1.7 in)	47 of 100 (Notable)
Itaimbe	Brazil	Record daily precipitation	65.0 mm (2.6 in)	46 of 100 (Notable)
Ferros	Brazil	Record daily precipitation	34.2 mm (1.3 in)	46 of 100 (Notable)
Concrete Ppl Fish STN	United States	Record daily precipitation	42.4 mm (1.7 in)	45 of 100 (Notable)
Flagstaff (Tnk)	South Africa	Record daily precipitation	60.0 mm (2.4 in)	44 of 100 (Notable)
Murray Lagoon (Hawks Nest)	Australia	Record daily precipitation	27.5 mm (1.1 in)	43 of 100 (Notable)
Cavalinho	Brazil	Record daily precipitation	47.2 mm (1.9 in)	43 of 100 (Notable)
Barra Do Cuiete-Jusante	Brazil	Record daily precipitation	38.7 mm (1.5 in)	43 of 100 (Notable)
Corrales	Mexico	Record high maximum temperature	34.4 C (93.9 F)	43 of 100 (Notable)
Durban-Botanical Gardens	South Africa	Record daily precipitation	25.0 mm (1.0 in)	42 of 100 (Notable)
Laketown	United States	Record high minimum temperature	17.2 C (63.0 F)	42 of 100 (Notable)
Vau da Lagoa	Brazil	Record daily precipitation	37.4 mm (1.5 in)	41 of 100 (Notable)
Amatikulu(Mill)	South Africa	Record daily precipitation	36.4 mm (1.4 in)	41 of 100 (Notable)
Woodville 4 ESE	United States	Record high minimum temperature	25.0 C (77.0 F)	41 of 100 (Notable)
Bridgeport	United States	Record high minimum temperature	20.0 C (68.0 F)	41 of 100 (Notable)
Anacortes	United States	Record daily precipitation	29.0 mm (1.1 in)	41 of 100 (Notable)
Leipzig-Holzhausen	Germany	Record high minimum temperature	17.3 C (63.1 F)	40 of 100 (Notable)
Federal Pt	United States	Record high minimum temperature	25.0 C (77.0 F)	40 of 100 (Notable)
Chemnitz	Germany	Record high minimum temperature	18.4 C (65.1 F)	39 of 100 (Notable)
Sandheads	India	Record daily precipitation	103.1 mm (4.1 in)	39 of 100 (Notable)
Lajas Substn	Puerto Rico [United States]	Record high maximum temperature	34.4 C (93.9 F)	39 of 100 (Notable)
Colwana (Bos)	South Africa	Record daily precipitation	34.4 mm (1.4 in)	39 of 100 (Notable)
Ft Collins	United States	Record high maximum temperature	35.6 C (96.1 F)	39 of 100 (Notable)
Telluride 4WNW	United States	Record high minimum temperature	10.6 C (51.1 F)	39 of 100 (Notable)
Presa Centenario	Mexico	Record high minimum temperature	18.9 C (66.0 F)	38 of 100 (Notable)
Callejones	Mexico	Record daily precipitation	88.9 mm (3.5 in)	37 of 100 (Notable)
Kazan	Russia	Record low maximum temperature	10.2 C (50.4 F)	37 of 100 (Notable)
Kwa-Mbonambi (Bos)	South Africa	Record daily precipitation	80.5 mm (3.2 in)	37 of 100 (Notable)
Blakely	United States	Record high maximum temperature	38.3 C (100.9 F)	37 of 100 (Notable)
Beaver City	United States	Record high maximum temperature	41.1 C (106.0 F)	37 of 100 (Notable)
Darrington Rs	United States	Record daily precipitation	29.2 mm (1.1 in)	37 of 100 (Notable)
Vermelho Velho	Brazil	Record daily precipitation	28.0 mm (1.1 in)	36 of 100 (Notable)
Delta	United States	Record high maximum temperature	37.8 C (100.0 F)	36 of 100 (Notable)
Norwood	United States	Record high minimum temperature	17.8 C (64.0 F)	36 of 100 (Notable)
Ogden Pioneer Ph	United States	Record high minimum temperature	21.1 C (70.0 F)	36 of 100 (Notable)
Ely AP	United States	Record high minimum temperature	14.4 C (57.9 F)	36 of 100 (Notable)
Cermoz	Russia	Record daily precipitation	25.4 mm (1.0 in)	35 of 100 (Notable)
Mnt Frere (Tnk)	South Africa	Record daily precipitation	51.3 mm (2.0 in)	35 of 100 (Notable)
Resplendor-Jusante	Brazil	Record daily precipitation	46.6 mm (1.8 in)	34 of 100 (Routine)
Campina Verde	Brazil	Record daily precipitation	31.4 mm (1.2 in)	34 of 100 (Routine)
Kr.Ansbach Weidenbach	Germany	Record daily precipitation	31.8 mm (1.3 in)	34 of 100 (Routine)
Boltenhagen	Germany	Record daily precipitation	29.1 mm (1.1 in)	34 of 100 (Routine)
Paonia 1SW	United States	Record high maximum temperature	35.6 C (96.1 F)	34 of 100 (Routine)
Grapeview 3 SW	United States	Record daily precipitation	27.7 mm (1.1 in)	34 of 100 (Routine)
Conceicao Do Mato D	Brazil	Record daily precipitation	30.1 mm (1.2 in)	33 of 100 (Routine)
Fairview	South Africa	Record daily precipitation	57.0 mm (2.2 in)	33 of 100 (Routine)
Arivaca	United States	Record daily precipitation	29.2 mm (1.1 in)	33 of 100 (Routine)
Cheyenne Wells 2NE	United States	Record high maximum temperature	39.4 C (102.9 F)	33 of 100 (Routine)
Ogden Sugar Factory	United States	Record high minimum temperature	20.6 C (69.1 F)	33 of 100 (Routine)
Mole Creek	Australia	Record daily precipitation	25.0 mm (1.0 in)	32 of 100 (Routine)

Counts by Type and Timescale

983 records

Records set or tied on 30 August 1990 by type: Highest daily maximum 357, Lowest daily maximum 42, Highest daily minimum 265, Lowest daily minimum 31, Heaviest daily rainfall 288.

Records on 30 August 1990 by type
Record type	Records
Highest daily maximum	357
Lowest daily maximum	42
Highest daily minimum	265
Lowest daily minimum	31
Heaviest daily rainfall	288
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 30 August 1990 by timescale: all-time 1, monthly 26, daily 956.

How Much Records Were Beaten By

748 broken records

Margins by which the 748 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 131.1. Ties are not counted.

Top 20 by Significance

30 August 1990

Top 20 records on 30 August 1990 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 August 1990	Walnut Creek, US	daily rain	57.2 mm (2.3 in)	47.0 mm (1.9 in)	59 years	64 of 100 (Major)
30 August 1990	Mapumulo (Tnk), ZA	daily rain	65.5 mm (2.6 in)	45.2 mm (1.8 in)	47 years	53 of 100 (Notable)
30 August 1990	Sao Joao de Petropolis, BR	monthly rain	48.0 mm (1.9 in)	18.0 mm (0.7 in)	5 years	52 of 100 (Notable)
30 August 1990	Baixo Guandu, BR	monthly rain	57.0 mm (2.2 in)	23.9 mm (0.9 in)	4 years	51 of 100 (Notable)
30 August 1990	Kailiili 436, US	daily rain	140.0 mm (5.5 in)	74.0 mm (2.9 in)	49 years	51 of 100 (Notable)
30 August 1990	Guanhaes, BR	daily rain	48.6 mm (1.9 in)	40.6 mm (1.6 in)	20 years	50 of 100 (Notable)
30 August 1990	Fazenda Jucuruaba, BR	daily rain	96.0 mm (3.8 in)	67.3 mm (2.6 in)	19 years	49 of 100 (Notable)
30 August 1990	Nakhon Phanom, TH	daily rain	196.1 mm (7.7 in)	131.1 mm (5.2 in)	20 years	49 of 100 (Notable)
30 August 1990	Santa Cruz-Caparao (Dnos), BR	daily rain	31.4 mm (1.2 in)	29.7 mm (1.2 in)	19 years	48 of 100 (Notable)
30 August 1990	Clover Valley, US	daily high min	18.9 C (66.0 F)	6.1 C (11.0 F)	71 years	48 of 100 (Notable)
30 August 1990	Morro Do Pilar, BR	monthly rain	43.0 mm (1.7 in)	18.0 mm (0.7 in)	6 years	47 of 100 (Notable)
30 August 1990	Itaimbe, BR	monthly rain	65.0 mm (2.6 in)	21.6 mm (0.9 in)	4 years	46 of 100 (Notable)
30 August 1990	Ferros, BR	daily rain	34.2 mm (1.3 in)	33.7 mm (1.3 in)	5 years	46 of 100 (Notable)
30 August 1990	Concrete Ppl Fish STN, US	daily rain	42.4 mm (1.7 in)	26.7 mm (1.1 in)	8 years	45 of 100 (Notable)
30 August 1990	Flagstaff (Tnk), ZA	daily rain	60.0 mm (2.4 in)	21.9 mm (0.9 in)	72 years	44 of 100 (Notable)
30 August 1990	Murray Lagoon (Hawks Nest), AU	daily rain	27.5 mm (1.1 in)	8.2 mm (0.32 in)	60 years	43 of 100 (Notable)
30 August 1990	Cavalinho, BR	daily rain	47.2 mm (1.9 in)	26.9 mm (1.1 in)	5 years	43 of 100 (Notable)
30 August 1990	Barra Do Cuiete-Jusante, BR	daily rain	38.7 mm (1.5 in)	32.7 mm (1.3 in)	20 years	43 of 100 (Notable)
30 August 1990	Corrales, MX	daily high max	34.4 C (93.9 F)	4.4 C (7.9 F)	44 years	43 of 100 (Notable)
30 August 1990	Durban-Botanical Gardens, ZA	daily rain	25.0 mm (1.0 in)	4.9 mm (0.19 in)	97 years	42 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

1806 to 1990

Records set or tied on this calendar date in each year from 1806 to 1990. 1990 had 983 records.

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

Records on 08-30 in each year
Year	Records
1806	1
1807	4
1813	1
1814	2
1827	1
1829	1
1835	1
1838	1
1839	1
1845	4
1850	1
1851	2
1855	1
1857	1
1859	1
1864	2
1867	1
1869	1
1870	2
1874	1
1875	2
1876	1
1877	2
1878	1
1880	4
1881	2
1882	1
1884	1
1885	5
1886	7
1887	1
1888	1
1889	2
1890	5
1891	1
1892	3
1893	3
1894	2
1895	1
1896	1
1897	3
1898	3
1899	2
1900	6
1901	8
1902	12
1903	19
1904	13
1905	23
1906	29
1907	8
1908	10
1909	37
1910	15
1911	41
1912	60
1913	22
1914	23
1915	47
1916	17
1917	50
1918	45
1919	17
1920	78
1921	100
1922	65
1923	61
1924	283
1925	167
1926	173
1927	109
1928	327
1929	208
1930	245
1931	192
1932	1,102
1933	274
1934	519
1935	476
1936	191
1937	418
1938	233
1939	401
1940	346
1941	422
1942	385
1943	487
1944	491
1945	455
1946	545
1947	599
1948	519
1949	240
1950	481
1951	1,091
1952	316
1953	1,124
1954	516
1955	417
1956	479
1957	321
1958	363
1959	546
1960	356
1961	573
1962	387
1963	442
1964	422
1965	1,118
1966	500
1967	536
1968	729
1969	522
1970	423
1971	443
1972	579
1973	646
1974	838
1975	664
1976	679
1977	665
1978	825
1979	517
1980	572
1981	684
1982	770
1983	696
1984	1,127
1985	629
1986	1,768
1987	638
1988	881
1989	791
1990	983
1991	938
1992	1,697
1993	1,200
1994	601
1995	940
1996	1,385
1997	960
1998	1,278
1999	864
2000	1,189
2001	750
2002	801
2003	1,226
2004	1,087
2005	1,500
2006	989
2007	1,300
2008	678
2009	1,251
2010	1,552
2011	994
2012	1,087
2013	644
2014	558
2015	1,074
2016	552
2017	924
2018	616
2019	755
2020	671
2021	429
2022	1,077
2023	651
2024	912
2025	324
2026	733

Download the Data

Data for records on 1990-08-30: 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	720
20 to 40	19
40 to 60	6
60 to 80	2
80 to 100	0
100 to 120	0
120 to 140	1