Weather Records on 15 August 2023

1,414 weather records were set or tied worldwide on 15 August 2023. Highest significance: Hartford Wwtp, US.

Key Facts for 15 August 2023

On 15 August 2023, 1,414 weather records were set or tied at long-record stations worldwide.
1,099 were record highs and 119 were record lows, counting maximum and minimum temperature.
By timescale, 10 were all-time records, 73 monthly and 1,331 daily.
Hartford Wwtp set a daily record precipitation of 61.7 mm (2.4 in) on 15 August 2023.
Across 168 earlier years (1793 to 2026) the same calendar date averaged 449 records.

Record Map

1,414 stations

1,414 station records on 15 August 2023 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 15 August 2023: highest significance records shown on the map
Station	Country	Type	Value	Significance
Hartford Wwtp	United States	Record daily precipitation	61.7 mm (2.4 in)	69 of 100 (Major)
Cortez	United States	Record daily precipitation	39.1 mm (1.5 in)	64 of 100 (Major)
Winston Salem Reynolds AP	United States	Record high maximum temperature	40.6 C (105.1 F)	61 of 100 (Major)
Millington 3 SE	United States	Record daily precipitation	54.1 mm (2.1 in)	60 of 100 (Major)
Kolka	Latvia	Record daily precipitation	52.6 mm (2.1 in)	59 of 100 (Notable)
Kobe	Japan	Record daily precipitation	117.1 mm (4.6 in)	58 of 100 (Notable)
Bernburg/Saale (Nord)	Germany	Record daily precipitation	34.7 mm (1.4 in)	57 of 100 (Notable)
Tottori	Japan	Record daily precipitation	213.1 mm (8.4 in)	57 of 100 (Notable)
Sultan Ismail Petra	Malaysia	Record daily precipitation	86.9 mm (3.4 in)	57 of 100 (Notable)
On	Sweden	Record daily precipitation	43.5 mm (1.7 in)	56 of 100 (Notable)
Plymouth Wwtp	United States	Record daily precipitation	60.7 mm (2.4 in)	56 of 100 (Notable)
Beaver Dam Wwtp	United States	Record daily precipitation	81.5 mm (3.2 in)	55 of 100 (Notable)
Burlington Wwtp	United States	Record daily precipitation	138.4 mm (5.4 in)	54 of 100 (Notable)
Cascade Locks	United States	Record high maximum temperature	41.7 C (107.1 F)	53 of 100 (Notable)
Chamita	United States	Record daily precipitation	50.8 mm (2.0 in)	53 of 100 (Notable)
Gustorp_D	Sweden	Record daily precipitation	38.1 mm (1.5 in)	52 of 100 (Notable)
Mt Leconte	United States	Record daily precipitation	95.3 mm (3.8 in)	52 of 100 (Notable)
Westhampton Gabreski AP	United States	Record daily precipitation	99.6 mm (3.9 in)	52 of 100 (Notable)
Athens	United States	Record daily precipitation	80.8 mm (3.2 in)	51 of 100 (Notable)
Waukesha Wwtp	United States	Record daily precipitation	61.2 mm (2.4 in)	51 of 100 (Notable)
Bogotol	Russia	Record daily precipitation	58.9 mm (2.3 in)	50 of 100 (Notable)
Little Red School House	United States	Record daily precipitation	69.9 mm (2.8 in)	50 of 100 (Notable)
Isit	Russia	Record daily precipitation	55.9 mm (2.2 in)	49 of 100 (Notable)
Cedar Lake	United States	Record high minimum temperature	17.8 C (64.0 F)	49 of 100 (Notable)
Savsjo	Sweden	Record daily precipitation	32.2 mm (1.3 in)	48 of 100 (Notable)
Norrkoping-Smhi	Sweden	Record daily precipitation	39.7 mm (1.6 in)	48 of 100 (Notable)
Plant City	United States	Record high maximum temperature	39.4 C (102.9 F)	48 of 100 (Notable)
Saint Johns	United States	Record daily precipitation	51.3 mm (2.0 in)	48 of 100 (Notable)
Charleroi Lock 4	United States	Record daily precipitation	52.1 mm (2.1 in)	47 of 100 (Notable)
Vancouver 4 NNE	United States	Record high maximum temperature	40.0 C (104.0 F)	47 of 100 (Notable)
Germantown Wastewater Utility	United States	Record daily precipitation	71.6 mm (2.8 in)	47 of 100 (Notable)
Neillsville 3ESE	United States	Record low maximum temperature	16.1 C (61.0 F)	47 of 100 (Notable)
Quedlinburg	Germany	Record daily precipitation	37.5 mm (1.5 in)	46 of 100 (Notable)
Weimar-Schondorf	Germany	Record daily precipitation	39.6 mm (1.6 in)	46 of 100 (Notable)
New Iberia AP - Acadiana Rgnl	United States	Record high minimum temperature	26.1 C (79.0 F)	46 of 100 (Notable)
Summerville 4W	United States	Record high minimum temperature	25.6 C (78.1 F)	46 of 100 (Notable)
Magdeburg	Germany	Record daily precipitation	53.4 mm (2.1 in)	45 of 100 (Notable)
Wewahitchka	United States	Record high maximum temperature	37.2 C (99.0 F)	45 of 100 (Notable)
Missoula 6 NW WFO	United States	Record high maximum temperature	38.9 C (102.0 F)	45 of 100 (Notable)
Selinsgrove 2 S	United States	Record daily precipitation	56.4 mm (2.2 in)	45 of 100 (Notable)
Fond du Lac Wwtp	United States	Record daily precipitation	47.5 mm (1.9 in)	45 of 100 (Notable)
Ljungby	Sweden	Record daily precipitation	33.3 mm (1.3 in)	44 of 100 (Notable)
Moscow U of I	United States	Record high maximum temperature	39.4 C (102.9 F)	44 of 100 (Notable)
Estherville 4E	United States	Record low maximum temperature	18.3 C (64.9 F)	44 of 100 (Notable)
Raleigh State UNIV	United States	Record high minimum temperature	25.0 C (77.0 F)	44 of 100 (Notable)
Boerne	United States	Record high maximum temperature	40.0 C (104.0 F)	44 of 100 (Notable)
Mauston 1 SE	United States	Record low maximum temperature	17.8 C (64.0 F)	44 of 100 (Notable)
Prastkulla	Sweden	Record daily precipitation	60.3 mm (2.4 in)	43 of 100 (Notable)
Norra_VI_D	Sweden	Record daily precipitation	46.0 mm (1.8 in)	43 of 100 (Notable)
Hanceville	United States	Record daily precipitation	81.0 mm (3.2 in)	43 of 100 (Notable)
Orleans	United States	Record high minimum temperature	21.7 C (71.1 F)	43 of 100 (Notable)
Driggs	United States	Record high minimum temperature	15.6 C (60.1 F)	43 of 100 (Notable)
Jeanerette 5 NW	United States	Record high minimum temperature	26.1 C (79.0 F)	43 of 100 (Notable)
Columbia	United States	Record high minimum temperature	25.6 C (78.1 F)	43 of 100 (Notable)
Brenham	United States	Record high minimum temperature	26.1 C (79.0 F)	43 of 100 (Notable)
Horicon Wwtp	United States	Record daily precipitation	64.8 mm (2.6 in)	43 of 100 (Notable)
Spokane Intl AP	United States	Record high maximum temperature	38.9 C (102.0 F)	43 of 100 (Notable)
Ft Jones Rs	United States	Record high minimum temperature	17.8 C (64.0 F)	42 of 100 (Notable)
Waynesboro 2 S	United States	Record high minimum temperature	24.4 C (75.9 F)	42 of 100 (Notable)
Covington 8 WNW	United States	Record high maximum temperature	38.9 C (102.0 F)	42 of 100 (Notable)

Counts by Type and Timescale

1,414 records

Records set or tied on 15 August 2023 by type: Highest daily maximum 505, Lowest daily maximum 64, Highest daily minimum 594, Lowest daily minimum 55, Heaviest daily rainfall 196.

Records on 15 August 2023 by type
Record type	Records
Highest daily maximum	505
Lowest daily maximum	64
Highest daily minimum	594
Lowest daily minimum	55
Heaviest daily rainfall	196
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 15 August 2023 by timescale: all-time 10, monthly 73, daily 1,331.

How Much Records Were Beaten By

1,070 broken records

Margins by which the 1,070 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 83.8. Ties are not counted.

Top 20 by Significance

15 August 2023

Top 20 records on 15 August 2023 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 August 2023	Hartford Wwtp, US	daily rain	61.7 mm (2.4 in)	36.3 mm (1.4 in)	124 years	69 of 100 (Major)
15 August 2023	Cortez, US	daily rain	39.1 mm (1.5 in)	22.6 mm (0.9 in)	66 years	64 of 100 (Major)
15 August 2023	Winston Salem Reynolds AP, US	all-time high max	40.6 C (105.1 F)	0.6 C (1.1 F)	105 years	61 of 100 (Major)
15 August 2023	Millington 3 SE, US	daily rain	54.1 mm (2.1 in)	22.1 mm (0.9 in)	112 years	60 of 100 (Major)
15 August 2023	Kolka, LV	daily rain	52.6 mm (2.1 in)	37.6 mm (1.5 in)	37 years	59 of 100 (Notable)
15 August 2023	Kobe, JP	daily rain	117.1 mm (4.6 in)	76.9 mm (3.0 in)	56 years	58 of 100 (Notable)
15 August 2023	Bernburg/Saale (Nord), DE	daily rain	34.7 mm (1.4 in)	12.3 mm (0.5 in)	121 years	57 of 100 (Notable)
15 August 2023	Tottori, JP	monthly rain	213.1 mm (8.4 in)	79.0 mm (3.1 in)	2 years	57 of 100 (Notable)
15 August 2023	Sultan Ismail Petra, MY	daily rain	86.9 mm (3.4 in)	55.9 mm (2.2 in)	57 years	57 of 100 (Notable)
15 August 2023	On, SE	daily rain	43.5 mm (1.7 in)	26.5 mm (1.0 in)	54 years	56 of 100 (Notable)
15 August 2023	Plymouth Wwtp, US	daily rain	60.7 mm (2.4 in)	33.5 mm (1.3 in)	66 years	56 of 100 (Notable)
15 August 2023	Beaver Dam Wwtp, US	daily rain	81.5 mm (3.2 in)	50.3 mm (2.0 in)	29 years	55 of 100 (Notable)
15 August 2023	Burlington Wwtp, US	all-time rain	138.4 mm (5.4 in)	9.1 mm (0.36 in)	73 years	54 of 100 (Notable)
15 August 2023	Cascade Locks, US	monthly high max	41.7 C (107.1 F)	1.7 C (3.1 F)	122 years	53 of 100 (Notable)
15 August 2023	Chamita, US	daily rain	50.8 mm (2.0 in)	35.6 mm (1.4 in)	32 years	53 of 100 (Notable)
15 August 2023	Gustorp_D, SE	daily rain	38.1 mm (1.5 in)	24.0 mm (0.9 in)	48 years	52 of 100 (Notable)
15 August 2023	Mt Leconte, US	daily rain	95.3 mm (3.8 in)	69.4 mm (2.7 in)	30 years	52 of 100 (Notable)
15 August 2023	Westhampton Gabreski AP, US	daily rain	99.6 mm (3.9 in)	68.4 mm (2.7 in)	18 years	52 of 100 (Notable)
15 August 2023	Athens, US	daily rain	80.8 mm (3.2 in)	49.0 mm (1.9 in)	28 years	51 of 100 (Notable)
15 August 2023	Waukesha Wwtp, US	daily rain	61.2 mm (2.4 in)	14.7 mm (0.6 in)	120 years	51 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 2023

Records set or tied on this calendar date in each year from 1793 to 2023. 2023 had 1,414 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 2023-08-15: 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	1,021
20 to 40	34
40 to 60	8
60 to 80	6
80 to 100	1