Weather Records on 15 August 1999

956 weather records were set or tied worldwide on 15 August 1999. Highest significance: Barkakra, SE.

Key Facts for 15 August 1999

On 15 August 1999, 956 weather records were set or tied at long-record stations worldwide.
368 were record highs and 345 were record lows, counting maximum and minimum temperature.
By timescale, 9 were all-time records, 41 monthly and 906 daily.
Barkakra set an all-time record daily precipitation of 98.0 mm (3.9 in) on 15 August 1999.
Across 168 earlier years (1793 to 2026) the same calendar date averaged 452 records.

Record Map

956 stations

956 station records on 15 August 1999 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 15 August 1999: highest significance records shown on the map
Station	Country	Type	Value	Significance
Barkakra	Sweden	Record daily precipitation	98.0 mm (3.9 in)	75 of 100 (Major)
Louisefred	Sweden	Record daily precipitation	119.0 mm (4.7 in)	73 of 100 (Major)
Norra_Stroo	Sweden	Record daily precipitation	114.1 mm (4.5 in)	71 of 100 (Major)
Kristianstad	Sweden	Record daily precipitation	46.4 mm (1.8 in)	61 of 100 (Major)
Klippan	Sweden	Record daily precipitation	59.2 mm (2.3 in)	58 of 100 (Notable)
Hassleholm	Sweden	Record daily precipitation	57.0 mm (2.2 in)	57 of 100 (Notable)
Staritsa	Russia	Record daily precipitation	60.7 mm (2.4 in)	55 of 100 (Notable)
Hano_A	Sweden	Record daily precipitation	34.4 mm (1.4 in)	55 of 100 (Notable)
Tver	Russia	Record daily precipitation	47.0 mm (1.9 in)	53 of 100 (Notable)
Olands Sodra Udde	Sweden	Record daily precipitation	45.4 mm (1.8 in)	53 of 100 (Notable)
Sydney (Observatory Hill)	Australia	Record daily precipitation	54.2 mm (2.1 in)	52 of 100 (Notable)
Svalov	Sweden	Record daily precipitation	47.3 mm (1.9 in)	52 of 100 (Notable)
Berlin 5 S	United States	Record daily precipitation	76.2 mm (3.0 in)	52 of 100 (Notable)
Whitehall	United States	Record daily precipitation	64.0 mm (2.5 in)	52 of 100 (Notable)
Ostaskov	Russia	Record daily precipitation	46.0 mm (1.8 in)	51 of 100 (Notable)
Smolensk	Russia	Record daily precipitation	42.5 mm (1.7 in)	50 of 100 (Notable)
Sendai	Japan	Record daily precipitation	126.2 mm (5.0 in)	49 of 100 (Notable)
Nelson Bay (Nelson Head)	Australia	Record daily precipitation	70.4 mm (2.8 in)	48 of 100 (Notable)
Grafton	United States	Record daily precipitation	88.9 mm (3.5 in)	48 of 100 (Notable)
Bergschenhoek	Netherlands	Record daily precipitation	35.9 mm (1.4 in)	47 of 100 (Notable)
Hackberry 8 SSW	United States	Record high maximum temperature	38.9 C (102.0 F)	47 of 100 (Notable)
Vomb	Sweden	Record daily precipitation	51.5 mm (2.0 in)	46 of 100 (Notable)
Ven	Sweden	Record daily precipitation	51.8 mm (2.0 in)	46 of 100 (Notable)
Tosteberga	Sweden	Record daily precipitation	64.8 mm (2.6 in)	46 of 100 (Notable)
Langhult	Sweden	Record daily precipitation	52.1 mm (2.1 in)	46 of 100 (Notable)
Castle Rock	United States	Record high minimum temperature	17.8 C (64.0 F)	46 of 100 (Notable)
Alcove Dam	United States	Record daily precipitation	50.8 mm (2.0 in)	46 of 100 (Notable)
Maksatiha	Russia	Record daily precipitation	41.3 mm (1.6 in)	45 of 100 (Notable)
Horby	Sweden	Record daily precipitation	55.4 mm (2.2 in)	45 of 100 (Notable)
Stamford	United States	Record daily precipitation	54.4 mm (2.1 in)	45 of 100 (Notable)
Putbus	Germany	Record daily precipitation	31.6 mm (1.2 in)	44 of 100 (Notable)
Bromolla	Sweden	Record daily precipitation	59.0 mm (2.3 in)	44 of 100 (Notable)
Genevad	Sweden	Record daily precipitation	64.3 mm (2.5 in)	44 of 100 (Notable)
Washington Sp	United States	Record low minimum temperature	13.3 C (55.9 F)	44 of 100 (Notable)
Black Rock	United States	Record high minimum temperature	19.4 C (66.9 F)	44 of 100 (Notable)
Mariedal	Sweden	Record daily precipitation	69.0 mm (2.7 in)	43 of 100 (Notable)
Riggins	United States	Record low minimum temperature	4.4 C (39.9 F)	43 of 100 (Notable)
Fairmont	United States	Record low minimum temperature	5.6 C (42.1 F)	43 of 100 (Notable)
Clemson UNIV	United States	Record high maximum temperature	37.8 C (100.0 F)	42 of 100 (Notable)
Randwick Bowling Club	Australia	Record daily precipitation	46.0 mm (1.8 in)	41 of 100 (Notable)
Hiddensee-Vitte	Germany	Record daily precipitation	29.1 mm (1.1 in)	41 of 100 (Notable)
Bjornstorp	Sweden	Record daily precipitation	43.0 mm (1.7 in)	41 of 100 (Notable)
Solvesborg	Sweden	Record daily precipitation	53.0 mm (2.1 in)	41 of 100 (Notable)
Riggins	United States	Record low maximum temperature	19.4 C (66.9 F)	41 of 100 (Notable)
Grafton	United States	Record daily precipitation	26.9 mm (1.1 in)	41 of 100 (Notable)
Chapel Hill 2 W	United States	Record daily precipitation	66.0 mm (2.6 in)	41 of 100 (Notable)
Allende	Mexico	Record high minimum temperature	27.8 C (82.0 F)	40 of 100 (Notable)
Halmstad	Sweden	Record daily precipitation	39.6 mm (1.6 in)	40 of 100 (Notable)
Experiment	United States	Record high maximum temperature	37.2 C (99.0 F)	40 of 100 (Notable)
Mayaguez City	Puerto Rico [United States]	Record high minimum temperature	25.0 C (77.0 F)	39 of 100 (Notable)
Belyj	Russia	Record daily precipitation	34.0 mm (1.3 in)	39 of 100 (Notable)
Malmo	Sweden	Record daily precipitation	27.7 mm (1.1 in)	39 of 100 (Notable)
Sasabe 7 NW	United States	Record daily precipitation	45.7 mm (1.8 in)	39 of 100 (Notable)
Tomelilla	Sweden	Record daily precipitation	50.0 mm (2.0 in)	38 of 100 (Notable)
Westcliffe	United States	Record high minimum temperature	12.8 C (55.0 F)	38 of 100 (Notable)
Pascagoula 3 NE	United States	Record high maximum temperature	36.7 C (98.1 F)	38 of 100 (Notable)
San Bernabe	Mexico	Record low minimum temperature	1.7 C (35.1 F)	37 of 100 (Notable)
Presa Taxhimay	Mexico	Record high maximum temperature	31.7 C (89.1 F)	37 of 100 (Notable)
Toccoa	United States	Record high maximum temperature	37.8 C (100.0 F)	37 of 100 (Notable)
London State Fish Hatchery	United States	Record low maximum temperature	18.3 C (64.9 F)	37 of 100 (Notable)

Counts by Type and Timescale

956 records

Records set or tied on 15 August 1999 by type: Highest daily maximum 222, Lowest daily maximum 132, Highest daily minimum 146, Lowest daily minimum 213, Heaviest daily rainfall 242, Heaviest daily snowfall 1.

Records on 15 August 1999 by type
Record type	Records
Highest daily maximum	222
Lowest daily maximum	132
Highest daily minimum	146
Lowest daily minimum	213
Heaviest daily rainfall	242
Heaviest daily snowfall	1
Deepest snow cover	0

Records on 15 August 1999 by timescale: all-time 9, monthly 41, daily 906.

How Much Records Were Beaten By

696 broken records

Margins by which the 696 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 111.2. Ties are not counted.

Top 20 by Significance

15 August 1999

Top 20 records on 15 August 1999 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 August 1999	Barkakra, SE	all-time rain	98.0 mm (3.9 in)	34.1 mm (1.3 in)	33 years	75 of 100 (Major)
15 August 1999	Louisefred, SE	all-time rain	119.0 mm (4.7 in)	60.8 mm (2.4 in)	31 years	73 of 100 (Major)
15 August 1999	Norra_Stroo, SE	all-time rain	114.1 mm (4.5 in)	60.7 mm (2.4 in)	27 years	71 of 100 (Major)
15 August 1999	Kristianstad, SE	daily rain	46.4 mm (1.8 in)	21.6 mm (0.9 in)	53 years	61 of 100 (Major)
15 August 1999	Klippan, SE	daily rain	59.2 mm (2.3 in)	36.6 mm (1.4 in)	44 years	58 of 100 (Notable)
15 August 1999	Hassleholm, SE	monthly rain	57.0 mm (2.2 in)	20.6 mm (0.8 in)	20 years	57 of 100 (Notable)
15 August 1999	Staritsa, RU	daily rain	60.7 mm (2.4 in)	44.6 mm (1.8 in)	38 years	55 of 100 (Notable)
15 August 1999	Hano_A, SE	daily rain	34.4 mm (1.4 in)	12.9 mm (0.5 in)	85 years	55 of 100 (Notable)
15 August 1999	Tver, RU	daily rain	47.0 mm (1.9 in)	32.0 mm (1.3 in)	24 years	53 of 100 (Notable)
15 August 1999	Olands Sodra Udde, SE	daily rain	45.4 mm (1.8 in)	22.8 mm (0.9 in)	36 years	53 of 100 (Notable)
15 August 1999	Sydney (Observatory Hill), AU	daily rain	54.2 mm (2.1 in)	22.2 mm (0.9 in)	96 years	52 of 100 (Notable)
15 August 1999	Svalov, SE	monthly rain	47.3 mm (1.9 in)	15.6 mm (0.6 in)	35 years	52 of 100 (Notable)
15 August 1999	Berlin 5 S, US	daily rain	76.2 mm (3.0 in)	58.7 mm (2.3 in)	10 years	52 of 100 (Notable)
15 August 1999	Whitehall, US	daily rain	64.0 mm (2.5 in)	36.1 mm (1.4 in)	62 years	52 of 100 (Notable)
15 August 1999	Ostaskov, RU	daily rain	46.0 mm (1.8 in)	32.4 mm (1.3 in)	22 years	51 of 100 (Notable)
15 August 1999	Smolensk, RU	daily rain	42.5 mm (1.7 in)	30.6 mm (1.2 in)	21 years	50 of 100 (Notable)
15 August 1999	Sendai, JP	daily rain	126.2 mm (5.0 in)	111.2 mm (4.4 in)	18 years	49 of 100 (Notable)
15 August 1999	Nelson Bay (Nelson Head), AU	daily rain	70.4 mm (2.8 in)	37.1 mm (1.5 in)	41 years	48 of 100 (Notable)
15 August 1999	Grafton, US	daily rain	88.9 mm (3.5 in)	53.3 mm (2.1 in)	10 years	48 of 100 (Notable)
15 August 1999	Bergschenhoek, NL	daily rain	35.9 mm (1.4 in)	19.4 mm (0.8 in)	41 years	47 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

1793 to 1999

Records set or tied on this calendar date in each year from 1793 to 1999. 1999 had 956 records.

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

Records on 08-15 in each year
Year	Records
1793	2
1802	1
1805	1
1812	1
1821	1
1838	2
1839	1
1841	1
1844	1
1845	3
1852	1
1854	1
1856	1
1858	1
1861	3
1867	1
1868	2
1869	1
1873	2
1875	1
1876	2
1877	1
1878	1
1879	1
1880	3
1881	2
1882	2
1883	1
1884	2
1885	3
1886	1
1887	1
1888	3
1890	2
1891	2
1892	3
1893	3
1895	1
1896	9
1897	3
1898	1
1899	2
1900	6
1901	5
1902	10
1903	5
1904	17
1905	26
1906	8
1907	14
1908	15
1909	30
1910	16
1911	26
1912	34
1913	42
1914	11
1915	26
1916	223
1917	32
1918	23
1919	22
1920	59
1921	55
1922	86
1923	116
1924	220
1925	91
1926	115
1927	223
1928	271
1929	586
1930	274
1931	351
1932	368
1933	268
1934	992
1935	414
1936	867
1937	574
1938	681
1939	450
1940	372
1941	289
1942	377
1943	426
1944	610
1945	433
1946	285
1947	559
1948	366
1949	559
1950	317
1951	597
1952	596
1953	449
1954	481
1955	539
1956	390
1957	355
1958	1,092
1959	515
1960	417
1961	704
1962	1,052
1963	972
1964	1,185
1965	535
1966	340
1967	687
1968	1,002
1969	583
1970	382
1971	899
1972	613
1973	499
1974	512
1975	490
1976	1,345
1977	550
1978	841
1979	1,788
1980	745
1981	588
1982	479
1983	955
1984	622
1985	915
1986	1,283
1987	1,098
1988	1,479
1989	495
1990	758
1991	778
1992	1,638
1993	831
1994	1,073
1995	1,298
1996	929
1997	927
1998	861
1999	956
2000	932
2001	1,254
2002	1,307
2003	1,248
2004	1,424
2005	1,067
2006	923
2007	1,317
2008	964
2009	1,038
2010	1,622
2011	770
2012	654
2013	711
2014	583
2015	759
2016	707
2017	532
2018	328
2019	435
2020	1,327
2021	900
2022	692
2023	1,414
2024	729
2025	772
2026	975

Download the Data

Data for records on 1999-08-15: 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	648
20 to 40	39
40 to 60	5
60 to 80	2
80 to 100	1
100 to 120	1