Weather Records on 17 August 1990

949 weather records were set or tied worldwide on 17 August 1990. Highest significance: Halmstad, SE.

Key Facts for 17 August 1990

On 17 August 1990, 949 weather records were set or tied at long-record stations worldwide.
341 were record highs and 110 were record lows, counting maximum and minimum temperature.
By timescale, 7 were all-time records, 25 monthly and 917 daily.
Halmstad set a daily record precipitation of 63.8 mm (2.5 in) on 17 August 1990.
Across 162 earlier years (1797 to 2026) the same calendar date averaged 471 records.

Record Map

949 stations

949 station records on 17 August 1990 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 August 1990: highest significance records shown on the map
Station	Country	Type	Value	Significance
Halmstad	Sweden	Record daily precipitation	63.8 mm (2.5 in)	73 of 100 (Major)
Aberdeen	United States	Record daily precipitation	82.6 mm (3.3 in)	69 of 100 (Major)
Olton	United States	Record daily precipitation	82.8 mm (3.3 in)	64 of 100 (Major)
Prospect 2 SW	United States	Record daily precipitation	27.4 mm (1.1 in)	61 of 100 (Major)
Ratnagiri	India	Record daily precipitation	279.4 mm (11.0 in)	58 of 100 (Notable)
Rochford 2 WNW	United States	Record daily precipitation	35.1 mm (1.4 in)	57 of 100 (Notable)
Carmo Do Cajuru	Brazil	Record daily precipitation	41.0 mm (1.6 in)	53 of 100 (Notable)
Fairfield	United States	Record daily precipitation	30.7 mm (1.2 in)	51 of 100 (Notable)
Skulte	Latvia	Record daily precipitation	49.4 mm (1.9 in)	49 of 100 (Notable)
Fazenda da Guarda (Parque)	Brazil	Record daily precipitation	35.6 mm (1.4 in)	48 of 100 (Notable)
Colonia Do Piagui	Brazil	Record daily precipitation	35.7 mm (1.4 in)	48 of 100 (Notable)
American Falls 6 NE	United States	Record daily precipitation	30.0 mm (1.2 in)	48 of 100 (Notable)
Puente Colgante	Mexico	Record high minimum temperature	26.7 C (80.1 F)	46 of 100 (Notable)
Laporte	United States	Record daily precipitation	83.6 mm (3.3 in)	46 of 100 (Notable)
Uppsala_Aut	Sweden	Record high minimum temperature	17.2 C (63.0 F)	45 of 100 (Notable)
Longmont 2 ESE	United States	Record daily precipitation	41.9 mm (1.6 in)	44 of 100 (Notable)
Union	United States	Record daily precipitation	74.7 mm (2.9 in)	44 of 100 (Notable)
Raleigh State UNIV	United States	Record daily precipitation	43.7 mm (1.7 in)	44 of 100 (Notable)
Avasjo-Borgafjall_D	Sweden	Record daily precipitation	27.4 mm (1.1 in)	43 of 100 (Notable)
Riga	Latvia	Record daily precipitation	36.6 mm (1.4 in)	41 of 100 (Notable)
Risnes I Fjotland	Norway	Record daily precipitation	56.0 mm (2.2 in)	41 of 100 (Notable)
Oostvoorne	Netherlands	Record daily precipitation	29.6 mm (1.2 in)	39 of 100 (Notable)
Mt Carmel	United States	Record daily precipitation	38.4 mm (1.5 in)	39 of 100 (Notable)
Tiber Dam	United States	Record high minimum temperature	23.9 C (75.0 F)	39 of 100 (Notable)
Blaikliden	Sweden	Record daily precipitation	26.0 mm (1.0 in)	38 of 100 (Notable)
Kirovohrad	Ukraine	Record high maximum temperature	38.2 C (100.8 F)	38 of 100 (Notable)
Catucaba	Brazil	Record daily precipitation	26.3 mm (1.0 in)	37 of 100 (Notable)
Tipton	United States	Record daily precipitation	85.9 mm (3.4 in)	37 of 100 (Notable)
Tower Falls	United States	Record daily precipitation	26.2 mm (1.0 in)	37 of 100 (Notable)
Clifton	United States	Record low maximum temperature	30.0 C (86.0 F)	36 of 100 (Notable)
Nouakchott	Mauritania	Record daily precipitation	51.1 mm (2.0 in)	35 of 100 (Notable)
Forse	Sweden	Record high minimum temperature	14.2 C (57.6 F)	35 of 100 (Notable)
Fazenda Bela Vista	Brazil	Record daily precipitation	25.6 mm (1.0 in)	34 of 100 (Routine)
Kumeny	Russia	Record daily precipitation	27.3 mm (1.1 in)	34 of 100 (Routine)
Henichesk	Ukraine	Record high maximum temperature	32.3 C (90.1 F)	34 of 100 (Routine)
Fruita	United States	Record low maximum temperature	24.4 C (75.9 F)	34 of 100 (Routine)
Antioch	United States	Record daily precipitation	79.5 mm (3.1 in)	34 of 100 (Routine)
Tularosa	United States	Record low minimum temperature	11.7 C (53.1 F)	34 of 100 (Routine)
Veendam	Netherlands	Record daily precipitation	35.0 mm (1.4 in)	33 of 100 (Routine)
Buckley 1 NE	United States	Record daily precipitation	27.2 mm (1.1 in)	33 of 100 (Routine)
Appleton	United States	Record high minimum temperature	22.2 C (72.0 F)	33 of 100 (Routine)
Chita	Russia	Record daily precipitation	46.7 mm (1.8 in)	32 of 100 (Routine)
Vila Capivari	Brazil	Record daily precipitation	28.0 mm (1.1 in)	31 of 100 (Routine)
Utena	Lithuania	Record daily precipitation	34.0 mm (1.3 in)	31 of 100 (Routine)
Vjatskie Poljany	Russia	Record daily precipitation	30.6 mm (1.2 in)	31 of 100 (Routine)
Ustordynskij	Russia	Record daily precipitation	48.5 mm (1.9 in)	31 of 100 (Routine)
Langvattnet	Sweden	Record daily precipitation	29.7 mm (1.2 in)	31 of 100 (Routine)
Warsaw	United States	Record daily precipitation	50.0 mm (2.0 in)	31 of 100 (Routine)
El Vado Dam	United States	Record low maximum temperature	17.8 C (64.0 F)	31 of 100 (Routine)
Kansas 2 NE	United States	Record high minimum temperature	26.1 C (79.0 F)	31 of 100 (Routine)
Jervis Bay Nature Reserve	Australia	Record daily precipitation	80.0 mm (3.1 in)	30 of 100 (Routine)
Caiua	Brazil	Record daily precipitation	40.8 mm (1.6 in)	30 of 100 (Routine)
Lukojanov	Russia	Record daily precipitation	26.2 mm (1.0 in)	30 of 100 (Routine)
Titusville	United States	Record daily precipitation	46.2 mm (1.8 in)	30 of 100 (Routine)
Effingham 3SW	United States	Record daily precipitation	27.9 mm (1.1 in)	30 of 100 (Routine)
Towner 2 NE	United States	Record high maximum temperature	37.2 C (99.0 F)	30 of 100 (Routine)
La Junta	Mexico	Record low minimum temperature	7.8 C (46.0 F)	29 of 100 (Routine)
Soyland I Gjesdal	Norway	Record daily precipitation	54.8 mm (2.2 in)	29 of 100 (Routine)
Majuro Wbas AP	Marshall Islands	Record daily precipitation	64.3 mm (2.5 in)	29 of 100 (Routine)
Black Rvr Pumps	United States	Record low minimum temperature	5.0 C (41.0 F)	29 of 100 (Routine)

Counts by Type and Timescale

949 records

Records set or tied on 17 August 1990 by type: Highest daily maximum 118, Lowest daily maximum 67, Highest daily minimum 223, Lowest daily minimum 43, Heaviest daily rainfall 498.

Records on 17 August 1990 by type
Record type	Records
Highest daily maximum	118
Lowest daily maximum	67
Highest daily minimum	223
Lowest daily minimum	43
Heaviest daily rainfall	498
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 17 August 1990 by timescale: all-time 7, monthly 25, daily 917.

How Much Records Were Beaten By

790 broken records

Margins by which the 790 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 130.8. Ties are not counted.

Top 20 by Significance

17 August 1990

Top 20 records on 17 August 1990 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 August 1990	Halmstad, SE	daily rain	63.8 mm (2.5 in)	27.7 mm (1.1 in)	90 years	73 of 100 (Major)
17 August 1990	Aberdeen, US	daily rain	82.6 mm (3.3 in)	43.2 mm (1.7 in)	76 years	69 of 100 (Major)
17 August 1990	Olton, US	daily rain	82.8 mm (3.3 in)	69.3 mm (2.7 in)	61 years	64 of 100 (Major)
17 August 1990	Prospect 2 SW, US	daily rain	27.4 mm (1.1 in)	20.8 mm (0.8 in)	73 years	61 of 100 (Major)
17 August 1990	Ratnagiri, IN	daily rain	279.4 mm (11.0 in)	130.8 mm (5.1 in)	32 years	58 of 100 (Notable)
17 August 1990	Rochford 2 WNW, US	daily rain	35.1 mm (1.4 in)	22.9 mm (0.9 in)	72 years	57 of 100 (Notable)
17 August 1990	Carmo Do Cajuru, BR	daily rain	41.0 mm (1.6 in)	34.8 mm (1.4 in)	28 years	53 of 100 (Notable)
17 August 1990	Fairfield, US	daily rain	30.7 mm (1.2 in)	21.0 mm (0.8 in)	63 years	51 of 100 (Notable)
17 August 1990	Skulte, LV	daily rain	49.4 mm (1.9 in)	37.5 mm (1.5 in)	23 years	49 of 100 (Notable)
17 August 1990	Fazenda da Guarda (Parque), BR	daily rain	35.6 mm (1.4 in)	27.6 mm (1.1 in)	44 years	48 of 100 (Notable)
17 August 1990	Colonia Do Piagui, BR	daily rain	35.7 mm (1.4 in)	30.6 mm (1.2 in)	27 years	48 of 100 (Notable)
17 August 1990	American Falls 6 NE, US	daily rain	30.0 mm (1.2 in)	16.8 mm (0.7 in)	21 years	48 of 100 (Notable)
17 August 1990	Puente Colgante, MX	daily high min	26.7 C (80.1 F)	3.9 C (7.0 F)	20 years	46 of 100 (Notable)
17 August 1990	Laporte, US	daily rain	83.6 mm (3.3 in)	47.5 mm (1.9 in)	31 years	46 of 100 (Notable)
17 August 1990	Uppsala_Aut, SE	daily high min	17.2 C (63.0 F)	1.8 C (3.2 F)	143 years	45 of 100 (Notable)
17 August 1990	Longmont 2 ESE, US	daily rain	41.9 mm (1.6 in)	19.0 mm (0.7 in)	11 years	44 of 100 (Notable)
17 August 1990	Union, US	daily rain	74.7 mm (2.9 in)	44.7 mm (1.8 in)	20 years	44 of 100 (Notable)
17 August 1990	Raleigh State UNIV, US	daily rain	43.7 mm (1.7 in)	15.5 mm (0.6 in)	89 years	44 of 100 (Notable)
17 August 1990	Avasjo-Borgafjall_D, SE	daily rain	27.4 mm (1.1 in)	19.2 mm (0.8 in)	36 years	43 of 100 (Notable)
17 August 1990	Riga, LV	daily rain	36.6 mm (1.4 in)	22.4 mm (0.9 in)	13 years	41 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

1797 to 1990

Records set or tied on this calendar date in each year from 1797 to 1990. 1990 had 949 records.

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

Records on 08-17 in each year
Year	Records
1797	2
1802	2
1820	2
1837	1
1838	2
1841	2
1842	1
1845	2
1853	1
1854	1
1856	1
1857	1
1861	3
1862	1
1867	1
1868	3
1869	1
1872	1
1875	2
1876	5
1879	1
1881	1
1882	1
1883	2
1885	3
1886	1
1888	5
1891	1
1892	3
1893	2
1894	3
1895	2
1896	3
1897	1
1898	5
1899	8
1900	3
1901	14
1902	7
1903	6
1904	2
1905	11
1906	28
1907	9
1908	26
1909	24
1910	17
1911	18
1912	31
1913	79
1914	41
1915	28
1916	33
1917	35
1918	112
1919	37
1920	110
1921	37
1922	169
1923	161
1924	171
1925	130
1926	182
1927	228
1928	131
1929	243
1930	138
1931	302
1932	360
1933	260
1934	377
1935	437
1936	670
1937	726
1938	466
1939	364
1940	341
1941	378
1942	461
1943	743
1944	531
1945	387
1946	433
1947	682
1948	475
1949	371
1950	522
1951	413
1952	470
1953	345
1954	685
1955	465
1956	407
1957	504
1958	519
1959	543
1960	533
1961	998
1962	445
1963	650
1964	410
1965	641
1966	496
1967	679
1968	953
1969	593
1970	467
1971	447
1972	1,044
1973	750
1974	582
1975	612
1976	797
1977	1,216
1978	814
1979	1,464
1980	895
1981	1,112
1982	554
1983	1,574
1984	726
1985	948
1986	916
1987	1,150
1988	1,608
1989	687
1990	949
1991	560
1992	1,813
1993	803
1994	1,038
1995	1,724
1996	752
1997	1,544
1998	1,003
1999	697
2000	994
2001	1,101
2002	1,266
2003	948
2004	1,046
2005	722
2006	814
2007	1,646
2008	1,301
2009	922
2010	1,105
2011	956
2012	1,215
2013	802
2014	997
2015	890
2016	748
2017	544
2018	518
2019	467
2020	1,529
2021	800
2022	1,428
2023	1,032
2024	740
2025	538
2026	535

Download the Data

Data for records on 1990-08-17: 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	753
20 to 40	30
40 to 60	5
60 to 80	1
80 to 100	0
100 to 120	0
120 to 140	1