Weather Records on 15 August 2017

532 weather records were set or tied worldwide on 15 August 2017. Highest significance: Idabel, US.

Key Facts for 15 August 2017

On 15 August 2017, 532 weather records were set or tied at long-record stations worldwide.
273 were record highs and 83 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 13 monthly and 516 daily.
Idabel set a daily record precipitation of 63.5 mm (2.5 in) on 15 August 2017.
Across 168 earlier years (1793 to 2026) the same calendar date averaged 454 records.

Record Map

532 stations

532 station records on 15 August 2017 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 15 August 2017: highest significance records shown on the map
Station	Country	Type	Value	Significance
Idabel	United States	Record daily precipitation	63.5 mm (2.5 in)	66 of 100 (Major)
Genoa 2 W	United States	Record daily precipitation	71.1 mm (2.8 in)	61 of 100 (Major)
Mt Pleasant	United States	Record daily precipitation	158.5 mm (6.2 in)	61 of 100 (Major)
Arnold	United States	Record daily precipitation	125.7 mm (4.9 in)	60 of 100 (Major)
Coloso	Puerto Rico [United States]	Record daily precipitation	99.1 mm (3.9 in)	58 of 100 (Notable)
Subiaco	United States	Record daily precipitation	96.3 mm (3.8 in)	54 of 100 (Notable)
Hastings 4N	United States	Record daily precipitation	84.1 mm (3.3 in)	54 of 100 (Notable)
Skovorodino	Russia	Record daily precipitation	37.3 mm (1.5 in)	53 of 100 (Notable)
Magnolia	United States	Record daily precipitation	85.6 mm (3.4 in)	53 of 100 (Notable)
Anqing	China	Record daily precipitation	136.4 mm (5.4 in)	52 of 100 (Notable)
Ratcliff	United States	Record daily precipitation	130.8 mm (5.1 in)	52 of 100 (Notable)
Purdum	United States	Record daily precipitation	88.9 mm (3.5 in)	51 of 100 (Notable)
Gilman	United States	Record daily precipitation	50.8 mm (2.0 in)	50 of 100 (Notable)
Montezuma 1 W	United States	Record daily precipitation	56.6 mm (2.2 in)	50 of 100 (Notable)
Tasiilaq	Greenland [Denmark]	Record low maximum temperature	1.8 C (35.2 F)	49 of 100 (Notable)
Winthrop UNIV	United States	Record daily precipitation	62.0 mm (2.4 in)	49 of 100 (Notable)
Bangalore	India	Record daily precipitation	128.8 mm (5.1 in)	48 of 100 (Notable)
Tarpon Spgs Sewage Plt	United States	Record high minimum temperature	28.9 C (84.0 F)	48 of 100 (Notable)
Corinth 5 WSW	United States	Record daily precipitation	57.7 mm (2.3 in)	48 of 100 (Notable)
Conway	United States	Record daily precipitation	104.1 mm (4.1 in)	47 of 100 (Notable)
Damascus 2 NNE	United States	Record daily precipitation	182.9 mm (7.2 in)	47 of 100 (Notable)
Blackfoot Fire Dept	United States	Record low maximum temperature	18.3 C (64.9 F)	47 of 100 (Notable)
Mallersdorf/Niederbayern	Germany	Record daily precipitation	38.7 mm (1.5 in)	46 of 100 (Notable)
Concord	United States	Record daily precipitation	87.4 mm (3.4 in)	46 of 100 (Notable)
Sykeston	United States	Record daily precipitation	51.6 mm (2.0 in)	46 of 100 (Notable)
Highmore	United States	Record low minimum temperature	5.0 C (41.0 F)	46 of 100 (Notable)
Abingdon 3S	United States	Record daily precipitation	47.0 mm (1.9 in)	45 of 100 (Notable)
Aibonito 1 S	Puerto Rico [United States]	Record high minimum temperature	21.7 C (71.1 F)	43 of 100 (Notable)
Dzhikimda	Russia	Record daily precipitation	59.8 mm (2.4 in)	43 of 100 (Notable)
Phuket	Thailand	Record daily precipitation	110.7 mm (4.4 in)	43 of 100 (Notable)
Spencer 6 SSE	United States	Record daily precipitation	64.3 mm (2.5 in)	43 of 100 (Notable)
Mc Clusky	United States	Record daily precipitation	27.4 mm (1.1 in)	43 of 100 (Notable)
Wymah (Gwandallen)	Australia	Record daily precipitation	60.0 mm (2.4 in)	42 of 100 (Notable)
Ozone	United States	Record daily precipitation	118.6 mm (4.7 in)	42 of 100 (Notable)
Goldbutte 7 N	United States	Record low minimum temperature	0.0 C (32.0 F)	42 of 100 (Notable)
Steele 4N	United States	Record daily precipitation	35.1 mm (1.4 in)	42 of 100 (Notable)
Quartzsite	United States	Record low minimum temperature	19.4 C (66.9 F)	41 of 100 (Notable)
Springerville	United States	Record low minimum temperature	2.8 C (37.0 F)	41 of 100 (Notable)
Princess Anne	United States	Record high minimum temperature	24.4 C (75.9 F)	41 of 100 (Notable)
Lemmon	United States	Record daily precipitation	29.2 mm (1.1 in)	41 of 100 (Notable)
Randolph	United States	Record low maximum temperature	22.8 C (73.0 F)	41 of 100 (Notable)
Bomnak	Russia	Record high minimum temperature	18.8 C (65.8 F)	40 of 100 (Notable)
New Park	United States	Record daily precipitation	30.0 mm (1.2 in)	40 of 100 (Notable)
Denekamp	Netherlands	Record daily precipitation	29.5 mm (1.2 in)	39 of 100 (Notable)
Vero Beach Intl AP	United States	Record daily precipitation	39.4 mm (1.6 in)	39 of 100 (Notable)
Dardanelle	United States	Record daily precipitation	52.3 mm (2.1 in)	38 of 100 (Notable)
Konigsmoor	Germany	Record daily precipitation	35.0 mm (1.4 in)	37 of 100 (Notable)
Reimlingen	Germany	Record daily precipitation	26.9 mm (1.1 in)	37 of 100 (Notable)
Friona	United States	Record daily precipitation	68.3 mm (2.7 in)	37 of 100 (Notable)
Park Falls Dnr HQ	United States	Record low maximum temperature	15.6 C (60.1 F)	37 of 100 (Notable)
Bristol AP	United States	Record daily precipitation	56.9 mm (2.2 in)	37 of 100 (Notable)
Adelaide West Terrace	Australia	Record high minimum temperature	15.1 C (59.2 F)	36 of 100 (Notable)
Minden	United States	Record high minimum temperature	26.1 C (79.0 F)	36 of 100 (Notable)
Clarksdale	United States	Record daily precipitation	42.2 mm (1.7 in)	36 of 100 (Notable)
Lexington	United States	Record high minimum temperature	25.6 C (78.1 F)	36 of 100 (Notable)
Ladysmith 3W	United States	Record low maximum temperature	17.2 C (63.0 F)	36 of 100 (Notable)
El-Golea	Algeria	Record high minimum temperature	30.5 C (86.9 F)	35 of 100 (Notable)
Hamada	Japan	Record daily precipitation	102.1 mm (4.0 in)	35 of 100 (Notable)
Nelkan	Russia	Record high minimum temperature	16.5 C (61.7 F)	35 of 100 (Notable)
Bolsoy Santar	Russia	Record high maximum temperature	25.3 C (77.5 F)	35 of 100 (Notable)

Counts by Type and Timescale

532 records

Records set or tied on 15 August 2017 by type: Highest daily maximum 93, Lowest daily maximum 41, Highest daily minimum 180, Lowest daily minimum 42, Heaviest daily rainfall 176.

Records on 15 August 2017 by type
Record type	Records
Highest daily maximum	93
Lowest daily maximum	41
Highest daily minimum	180
Lowest daily minimum	42
Heaviest daily rainfall	176
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 15 August 2017 by timescale: all-time 3, monthly 13, daily 516.

How Much Records Were Beaten By

425 broken records

Margins by which the 425 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 121.4. Ties are not counted.

Top 20 by Significance

15 August 2017

Top 20 records on 15 August 2017 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 August 2017	Idabel, US	daily rain	63.5 mm (2.5 in)	38.1 mm (1.5 in)	103 years	66 of 100 (Major)
15 August 2017	Genoa 2 W, US	daily rain	71.1 mm (2.8 in)	31.2 mm (1.2 in)	92 years	61 of 100 (Major)
15 August 2017	Mt Pleasant, US	monthly rain	158.5 mm (6.2 in)	59.7 mm (2.4 in)	8 years	61 of 100 (Major)
15 August 2017	Arnold, US	all-time rain	125.7 mm (4.9 in)	17.0 mm (0.7 in)	66 years	60 of 100 (Major)
15 August 2017	Coloso, PR	daily rain	99.1 mm (3.9 in)	31.5 mm (1.2 in)	103 years	58 of 100 (Notable)
15 August 2017	Subiaco, US	daily rain	96.3 mm (3.8 in)	45.0 mm (1.8 in)	56 years	54 of 100 (Notable)
15 August 2017	Hastings 4N, US	daily rain	84.1 mm (3.3 in)	50.6 mm (2.0 in)	30 years	54 of 100 (Notable)
15 August 2017	Skovorodino, RU	daily rain	37.3 mm (1.5 in)	13.1 mm (0.5 in)	103 years	53 of 100 (Notable)
15 August 2017	Magnolia, US	daily rain	85.6 mm (3.4 in)	59.4 mm (2.3 in)	40 years	53 of 100 (Notable)
15 August 2017	Anqing, CN	daily rain	136.4 mm (5.4 in)	69.5 mm (2.7 in)	42 years	52 of 100 (Notable)
15 August 2017	Ratcliff, US	monthly rain	130.8 mm (5.1 in)	31.2 mm (1.2 in)	52 years	52 of 100 (Notable)
15 August 2017	Purdum, US	monthly rain	88.9 mm (3.5 in)	2.0 mm (0.08 in)	114 years	51 of 100 (Notable)
15 August 2017	Gilman, US	daily rain	50.8 mm (2.0 in)	17.3 mm (0.7 in)	115 years	50 of 100 (Notable)
15 August 2017	Montezuma 1 W, US	daily rain	56.6 mm (2.2 in)	18.5 mm (0.7 in)	108 years	50 of 100 (Notable)
15 August 2017	Tasiilaq, GL	monthly low max	1.8 C (35.2 F)	1.9 C (3.4 F)	73 years	49 of 100 (Notable)
15 August 2017	Winthrop UNIV, US	daily rain	62.0 mm (2.4 in)	25.9 mm (1.0 in)	84 years	49 of 100 (Notable)
15 August 2017	Bangalore, IN	monthly rain	128.8 mm (5.1 in)	14.7 mm (0.6 in)	58 years	48 of 100 (Notable)
15 August 2017	Tarpon Spgs Sewage Plt, US	daily high min	28.9 C (84.0 F)	1.7 C (3.1 F)	92 years	48 of 100 (Notable)
15 August 2017	Corinth 5 WSW, US	daily rain	57.7 mm (2.3 in)	13.0 mm (0.5 in)	116 years	48 of 100 (Notable)
15 August 2017	Conway, US	daily rain	104.1 mm (4.1 in)	25.4 mm (1.0 in)	68 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 2017

Records set or tied on this calendar date in each year from 1793 to 2017. 2017 had 532 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 2017-08-15: 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 2026-10-16 (16 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	394
20 to 40	20
40 to 60	9
60 to 80	1
80 to 100	0
100 to 120	0
120 to 140	1