Weather Records on 31 August 1990

966 weather records were set or tied worldwide on 31 August 1990. Highest significance: Najahan, RU.

Key Facts for 31 August 1990

On 31 August 1990, 966 weather records were set or tied at long-record stations worldwide.
469 were record highs and 112 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 25 monthly and 938 daily.
Najahan set a monthly record daily precipitation of 88.1 mm (3.5 in) on 31 August 1990.
Across 165 earlier years (1796 to 2026) the same calendar date averaged 433 records.

Record Map

966 stations

966 station records on 31 August 1990 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 31 August 1990: highest significance records shown on the map
Station	Country	Type	Value	Significance
Najahan	Russia	Record daily precipitation	88.1 mm (3.5 in)	72 of 100 (Major)
Weilerswist-Lommersum	Germany	Record daily precipitation	40.3 mm (1.6 in)	67 of 100 (Major)
Bad-Ahrweiler Neuenahr	Germany	Record daily precipitation	47.9 mm (1.9 in)	60 of 100 (Major)
Emory	United States	Record high minimum temperature	28.3 C (82.9 F)	60 of 100 (Major)
Stradbroke Station	Australia	Record daily precipitation	25.0 mm (1.0 in)	59 of 100 (Notable)
Aachen	Germany	Record daily precipitation	28.2 mm (1.1 in)	58 of 100 (Notable)
Nurburg	Germany	Record daily precipitation	45.4 mm (1.8 in)	58 of 100 (Notable)
Tryon	United States	Record daily precipitation	125.2 mm (4.9 in)	58 of 100 (Notable)
Hannover	Germany	Record daily precipitation	30.7 mm (1.2 in)	57 of 100 (Notable)
Tullamore (Old Post Office)	Australia	Record daily precipitation	73.0 mm (2.9 in)	55 of 100 (Notable)
Campina Verde	Brazil	Record daily precipitation	60.4 mm (2.4 in)	53 of 100 (Notable)
Koln-Bonn	Germany	Record daily precipitation	57.8 mm (2.3 in)	53 of 100 (Notable)
Goonumbla (Coradgery)	Australia	Record daily precipitation	37.4 mm (1.5 in)	51 of 100 (Notable)
Monchengladbach	Germany	Record daily precipitation	38.4 mm (1.5 in)	51 of 100 (Notable)
Jomo Kenyatta Intl	Kenya	Record daily precipitation	35.6 mm (1.4 in)	51 of 100 (Notable)
Koln-Stammheim	Germany	Record daily precipitation	41.1 mm (1.6 in)	50 of 100 (Notable)
Bad Sooden-Allendorf	Germany	Record daily precipitation	30.1 mm (1.2 in)	50 of 100 (Notable)
Ocozocoautla	Mexico	Record daily precipitation	95.8 mm (3.8 in)	50 of 100 (Notable)
Monte Verde Paulista	Brazil	Record daily precipitation	46.1 mm (1.8 in)	49 of 100 (Notable)
Luxembourg Airport	Luxembourg	Record daily precipitation	39.0 mm (1.5 in)	49 of 100 (Notable)
Mount Hope (Cypress Grove)	Australia	Record daily precipitation	25.2 mm (1.0 in)	48 of 100 (Notable)
Altair	Brazil	Record daily precipitation	53.2 mm (2.1 in)	47 of 100 (Notable)
Elsdorf/Erftkreis	Germany	Record daily precipitation	31.8 mm (1.3 in)	47 of 100 (Notable)
Essen-Bredeney	Germany	Record daily precipitation	40.0 mm (1.6 in)	46 of 100 (Notable)
Ludinghausen	Germany	Record daily precipitation	30.8 mm (1.2 in)	45 of 100 (Notable)
Schneifelforsthaus	Germany	Record daily precipitation	34.8 mm (1.4 in)	45 of 100 (Notable)
Ermsdorf	Luxembourg	Record daily precipitation	42.7 mm (1.7 in)	45 of 100 (Notable)
Dinghai	China	Record daily precipitation	116.8 mm (4.6 in)	44 of 100 (Notable)
Ocampo	Mexico	Record daily precipitation	56.4 mm (2.2 in)	44 of 100 (Notable)
Solingen-Hohenscheid	Germany	Record daily precipitation	41.9 mm (1.6 in)	43 of 100 (Notable)
Bochum	Germany	Record daily precipitation	27.8 mm (1.1 in)	43 of 100 (Notable)
Vaals	Netherlands	Record daily precipitation	28.9 mm (1.1 in)	43 of 100 (Notable)
Ibitu	Brazil	Record daily precipitation	79.4 mm (3.1 in)	42 of 100 (Notable)
Tonisvorst	Germany	Record daily precipitation	31.8 mm (1.3 in)	42 of 100 (Notable)
Krabbendijke	Netherlands	Record daily precipitation	28.0 mm (1.1 in)	42 of 100 (Notable)
Wuppertal-Buchenhofen	Germany	Record daily precipitation	63.8 mm (2.5 in)	41 of 100 (Notable)
Encarnacion	Paraguay	Record daily precipitation	57.0 mm (2.2 in)	41 of 100 (Notable)
Alvin	United States	Record high maximum temperature	36.7 C (98.1 F)	41 of 100 (Notable)
Annaturm	Germany	Record daily precipitation	30.6 mm (1.2 in)	40 of 100 (Notable)
Bad Kreuznach	Germany	Record daily precipitation	27.6 mm (1.1 in)	40 of 100 (Notable)
Neuwied	Germany	Record daily precipitation	31.9 mm (1.3 in)	40 of 100 (Notable)
Presa Alvaro Obregon	Mexico	Record daily precipitation	82.3 mm (3.2 in)	40 of 100 (Notable)
Pisgah Forest 3 NE	United States	Record daily precipitation	77.5 mm (3.1 in)	40 of 100 (Notable)
Anderson	United States	Record daily precipitation	40.6 mm (1.6 in)	40 of 100 (Notable)
Anderson FAA AP	United States	Record daily precipitation	57.9 mm (2.3 in)	40 of 100 (Notable)
Hilgenroth	Germany	Record daily precipitation	28.2 mm (1.1 in)	39 of 100 (Notable)
Tesia	Mexico	Record daily precipitation	95.0 mm (3.7 in)	39 of 100 (Notable)
Balancan de Dominguez (Dge)	Mexico	Record low minimum temperature	17.2 C (63.0 F)	39 of 100 (Notable)
Benschop	Netherlands	Record daily precipitation	29.7 mm (1.2 in)	39 of 100 (Notable)
Paonia 1SW	United States	Record high minimum temperature	16.7 C (62.1 F)	39 of 100 (Notable)
Diablo Dam	United States	Record daily precipitation	43.2 mm (1.7 in)	39 of 100 (Notable)
Barra Do Escuro	Brazil	Record daily precipitation	25.2 mm (1.0 in)	38 of 100 (Notable)
Santa Albertina	Brazil	Record daily precipitation	34.9 mm (1.4 in)	38 of 100 (Notable)
Diepholz	Germany	Record daily precipitation	34.2 mm (1.3 in)	38 of 100 (Notable)
Belvaux	Luxembourg	Record daily precipitation	26.4 mm (1.0 in)	38 of 100 (Notable)
Corrales	Mexico	Record high maximum temperature	33.9 C (93.0 F)	38 of 100 (Notable)
Selma	United States	Record low maximum temperature	25.6 C (78.1 F)	38 of 100 (Notable)
Olimpia	Brazil	Record daily precipitation	43.9 mm (1.7 in)	37 of 100 (Notable)
Schaesberg	Netherlands	Record daily precipitation	25.6 mm (1.0 in)	37 of 100 (Notable)
Ft Ross	United States	Record high maximum temperature	23.9 C (75.0 F)	37 of 100 (Notable)

Counts by Type and Timescale

966 records

Records set or tied on 31 August 1990 by type: Highest daily maximum 255, Lowest daily maximum 47, Highest daily minimum 214, Lowest daily minimum 65, Heaviest daily rainfall 385.

Records on 31 August 1990 by type
Record type	Records
Highest daily maximum	255
Lowest daily maximum	47
Highest daily minimum	214
Lowest daily minimum	65
Heaviest daily rainfall	385
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 31 August 1990 by timescale: all-time 3, monthly 25, daily 938.

How Much Records Were Beaten By

769 broken records

Margins by which the 769 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 104.5. Ties are not counted.

Top 20 by Significance

31 August 1990

Top 20 records on 31 August 1990 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
31 August 1990	Najahan, RU	monthly rain	88.1 mm (3.5 in)	33.4 mm (1.3 in)	50 years	72 of 100 (Major)
31 August 1990	Weilerswist-Lommersum, DE	daily rain	40.3 mm (1.6 in)	25.1 mm (1.0 in)	67 years	67 of 100 (Major)
31 August 1990	Bad-Ahrweiler Neuenahr, DE	daily rain	47.9 mm (1.9 in)	39.1 mm (1.5 in)	48 years	60 of 100 (Major)
31 August 1990	Emory, US	all-time high min	28.3 C (82.9 F)	1.1 C (2.0 F)	90 years	60 of 100 (Major)
31 August 1990	Stradbroke Station, AU	daily rain	25.0 mm (1.0 in)	25.0 mm (1.0 in)	73 years	59 of 100 (Notable)
31 August 1990	Aachen, DE	daily rain	28.2 mm (1.1 in)	12.8 mm (0.5 in)	96 years	58 of 100 (Notable)
31 August 1990	Nurburg, DE	daily rain	45.4 mm (1.8 in)	33.1 mm (1.3 in)	45 years	58 of 100 (Notable)
31 August 1990	Tryon, US	daily rain	125.2 mm (4.9 in)	66.5 mm (2.6 in)	72 years	58 of 100 (Notable)
31 August 1990	Hannover, DE	daily rain	30.7 mm (1.2 in)	23.1 mm (0.9 in)	55 years	57 of 100 (Notable)
31 August 1990	Tullamore (Old Post Office), AU	monthly rain	73.0 mm (2.9 in)	22.7 mm (0.9 in)	30 years	55 of 100 (Notable)
31 August 1990	Campina Verde, BR	daily rain	60.4 mm (2.4 in)	39.3 mm (1.5 in)	29 years	53 of 100 (Notable)
31 August 1990	Koln-Bonn, DE	daily rain	57.8 mm (2.3 in)	47.3 mm (1.9 in)	24 years	53 of 100 (Notable)
31 August 1990	Goonumbla (Coradgery), AU	daily rain	37.4 mm (1.5 in)	8.7 mm (0.34 in)	100 years	51 of 100 (Notable)
31 August 1990	Monchengladbach, DE	daily rain	38.4 mm (1.5 in)	19.8 mm (0.8 in)	48 years	51 of 100 (Notable)
31 August 1990	Jomo Kenyatta Intl, KE	daily rain	35.6 mm (1.4 in)	31.0 mm (1.2 in)	28 years	51 of 100 (Notable)
31 August 1990	Koln-Stammheim, DE	daily rain	41.1 mm (1.6 in)	30.5 mm (1.2 in)	21 years	50 of 100 (Notable)
31 August 1990	Bad Sooden-Allendorf, DE	daily rain	30.1 mm (1.2 in)	21.2 mm (0.8 in)	37 years	50 of 100 (Notable)
31 August 1990	Ocozocoautla, MX	daily rain	95.8 mm (3.8 in)	64.8 mm (2.6 in)	16 years	50 of 100 (Notable)
31 August 1990	Monte Verde Paulista, BR	daily rain	46.1 mm (1.8 in)	37.6 mm (1.5 in)	43 years	49 of 100 (Notable)
31 August 1990	Luxembourg Airport, LU	daily rain	39.0 mm (1.5 in)	22.6 mm (0.9 in)	40 years	49 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

1796 to 1990

Records set or tied on this calendar date in each year from 1796 to 1990. 1990 had 966 records.

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

Records on 08-31 in each year
Year	Records
1796	1
1806	1
1807	2
1813	1
1814	1
1816	1
1827	1
1836	1
1846	1
1849	1
1851	1
1856	2
1858	1
1859	1
1860	1
1861	1
1863	1
1867	1
1869	1
1873	1
1875	1
1876	1
1877	2
1879	2
1881	3
1882	2
1885	1
1886	5
1887	1
1889	1
1890	2
1892	3
1893	1
1894	1
1895	1
1896	1
1897	5
1898	10
1899	4
1900	3
1901	5
1902	5
1903	16
1904	13
1905	8
1906	47
1907	6
1908	12
1909	39
1910	20
1911	31
1912	34
1913	40
1914	23
1915	71
1916	7
1917	60
1918	58
1919	25
1920	46
1921	86
1922	58
1923	63
1924	232
1925	111
1926	148
1927	103
1928	201
1929	300
1930	243
1931	192
1932	807
1933	424
1934	381
1935	540
1936	226
1937	508
1938	324
1939	296
1940	400
1941	528
1942	422
1943	650
1944	638
1945	572
1946	545
1947	473
1948	367
1949	409
1950	662
1951	910
1952	388
1953	1,054
1954	633
1955	539
1956	734
1957	317
1958	417
1959	496
1960	366
1961	625
1962	432
1963	415
1964	591
1965	886
1966	830
1967	952
1968	562
1969	474
1970	558
1971	326
1972	287
1973	793
1974	587
1975	658
1976	732
1977	621
1978	891
1979	400
1980	701
1981	692
1982	586
1983	788
1984	866
1985	854
1986	1,218
1987	836
1988	570
1989	622
1990	966
1991	848
1992	1,274
1993	1,286
1994	1,139
1995	1,077
1996	1,451
1997	943
1998	1,163
1999	988
2000	1,545
2001	944
2002	852
2003	1,232
2004	963
2005	1,782
2006	1,147
2007	1,110
2008	870
2009	1,224
2010	1,490
2011	994
2012	932
2013	771
2014	458
2015	1,074
2016	599
2017	596
2018	366
2019	781
2020	737
2021	553
2022	1,191
2023	600
2024	766
2025	307
2026	595

Download the Data

Data for records on 1990-08-31: 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	718
20 to 40	42
40 to 60	6
60 to 80	2
80 to 100	0
100 to 120	1