Weather Records on 15 August 1921

55 weather records were set or tied worldwide on 15 August 1921. Highest significance: Nidingen A, SE.

Key Facts for 15 August 1921

On 15 August 1921, 55 weather records were set or tied at long-record stations worldwide.
4 were record highs and 35 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 1 monthly and 54 daily.
Nidingen A set a daily record precipitation of 45.7 mm (1.8 in) on 15 August 1921.
Across 168 earlier years (1793 to 2026) the same calendar date averaged 457 records.

Record Map

55 stations

55 station records on 15 August 1921 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 15 August 1921: highest significance records shown on the map
Station	Country	Type	Value	Significance
Nidingen A	Sweden	Record daily precipitation	45.7 mm (1.8 in)	45 of 100 (Notable)
Varberg	Sweden	Record daily precipitation	33.2 mm (1.3 in)	44 of 100 (Notable)
Mena	United States	Record daily precipitation	74.7 mm (2.9 in)	35 of 100 (Notable)
Mena	United States	Record low maximum temperature	23.9 C (75.0 F)	23 of 100 (Routine)
World Trade Ctr	United States	Record low minimum temperature	14.4 C (57.9 F)	22 of 100 (Routine)
Nemours (Ghazaouet)	Algeria	Record low minimum temperature	15.0 C (59.0 F)	20 of 100 (Routine)
Pitea	Sweden	Record high minimum temperature	14.5 C (58.1 F)	20 of 100 (Routine)
Rogersville 1 NE	United States	Record daily precipitation	41.9 mm (1.6 in)	20 of 100 (Routine)
Tarnaby	Sweden	Record daily precipitation	19.0 mm (0.7 in)	19 of 100 (Routine)
Boras	Sweden	Record daily precipitation	22.0 mm (0.9 in)	18 of 100 (Routine)
Morris W Cntrl Rsch & Outreach	United States	Record low minimum temperature	3.9 C (39.0 F)	18 of 100 (Routine)
Lexington Bluegrass AP	United States	Record low minimum temperature	12.8 C (55.0 F)	18 of 100 (Routine)
Tranebjerg	Denmark	Record low maximum temperature	13.2 C (55.8 F)	17 of 100 (Routine)
Koebenhavn: Landbohojskolen-1	Denmark	Record low maximum temperature	14.1 C (57.4 F)	17 of 100 (Routine)
Karesuando	Sweden	Record high minimum temperature	11.0 C (51.8 F)	17 of 100 (Routine)
Huron Rgnl AP	United States	Record low maximum temperature	16.7 C (62.1 F)	16 of 100 (Routine)
Ny City Cntrl Park	United States	Record low minimum temperature	13.3 C (55.9 F)	16 of 100 (Routine)
Halmstad	Sweden	Record low maximum temperature	15.0 C (59.0 F)	15 of 100 (Routine)
Wilmington Wb City	United States	Record low maximum temperature	25.0 C (77.0 F)	15 of 100 (Routine)
Constantine	Algeria	Record low maximum temperature	26.0 C (78.8 F)	14 of 100 (Routine)
Tranebjerg	Denmark	Record daily precipitation	11.0 mm (0.4 in)	14 of 100 (Routine)
Kristianstad	Sweden	Record low maximum temperature	14.5 C (58.1 F)	14 of 100 (Routine)
Columbia Wb City	United States	Record low minimum temperature	12.8 C (55.0 F)	14 of 100 (Routine)
Sheringa (Lake Hamilton)	Australia	Record daily precipitation	10.9 mm (0.4 in)	13 of 100 (Routine)
Willaura (Yarram Park)	Australia	Record daily precipitation	6.1 mm (0.24 in)	13 of 100 (Routine)
Cape Moreton Lighthouse	Australia	Record daily precipitation	24.1 mm (0.9 in)	11 of 100 (Routine)
Nordby (Fano)	Denmark	Record low maximum temperature	13.4 C (56.1 F)	11 of 100 (Routine)
Wrixum/Fohr	Germany	Record low maximum temperature	14.9 C (58.8 F)	11 of 100 (Routine)
Enisejsk	Russia	Record daily precipitation	5.8 mm (0.23 in)	11 of 100 (Routine)
Irkutsk	Russia	Record high maximum temperature	33.2 C (91.8 F)	11 of 100 (Routine)
Skara 1	Sweden	Record daily precipitation	21.8 mm (0.9 in)	11 of 100 (Routine)
Blue Hill Coop	United States	Record low minimum temperature	10.0 C (50.0 F)	11 of 100 (Routine)
Philadelphia City	United States	Record low minimum temperature	15.0 C (59.0 F)	11 of 100 (Routine)
Kunzelsau	Germany	Record daily precipitation	24.4 mm (1.0 in)	10 of 100 (Routine)
Katberg (Bos)	South Africa	Record daily precipitation	4.1 mm (0.16 in)	10 of 100 (Routine)
Morgantown 1	United States	Record low minimum temperature	10.0 C (50.0 F)	10 of 100 (Routine)
Munchen-Nymphenburg	Germany	Record low maximum temperature	14.5 C (58.1 F)	9 of 100 (Routine)
Husum	Germany	Record low maximum temperature	14.6 C (58.3 F)	9 of 100 (Routine)
Vinga	Sweden	Record daily precipitation	14.5 mm (0.6 in)	9 of 100 (Routine)
Malvern	United States	Record low maximum temperature	26.1 C (79.0 F)	7 of 100 (Routine)
Stuttgart	United States	Record low maximum temperature	27.2 C (81.0 F)	7 of 100 (Routine)
Karlshamn	Sweden	Record low maximum temperature	12.5 C (54.5 F)	6 of 100 (Routine)
Franklin	United States	Record low maximum temperature	24.4 C (75.9 F)	6 of 100 (Routine)
Sidi-Bel-Abbes	Algeria	Record low minimum temperature	11.0 C (51.8 F)	3 of 100 (Routine)
Chatham	Canada	Record low maximum temperature	16.7 C (62.1 F)	3 of 100 (Routine)
Yarmouth	Canada	Record low maximum temperature	16.1 C (61.0 F)	3 of 100 (Routine)
Haparanda	Sweden	Record high minimum temperature	14.0 C (57.2 F)	3 of 100 (Routine)
Fort National	Algeria	Record low minimum temperature	14.0 C (57.2 F)	2 of 100 (Routine)
Milton Post Office	Australia	Record daily precipitation	5.1 mm (0.20 in)	2 of 100 (Routine)
Sandvig	Denmark	Record low maximum temperature	14.5 C (58.1 F)	2 of 100 (Routine)
Weldon	United States	Record low minimum temperature	16.7 C (62.1 F)	2 of 100 (Routine)
Concordia ASOS	United States	Record low maximum temperature	25.6 C (78.1 F)	2 of 100 (Routine)
Tunis	Tunisia	Record low maximum temperature	29.0 C (84.2 F)	1 of 100 (Routine)
Little Rock St Capitol	United States	Record low maximum temperature	25.0 C (77.0 F)	1 of 100 (Routine)
Santa Fe	United States	Record low maximum temperature	22.2 C (72.0 F)	1 of 100 (Routine)

Counts by Type and Timescale

55 records

Records set or tied on 15 August 1921 by type: Highest daily maximum 1, Lowest daily maximum 23, Highest daily minimum 3, Lowest daily minimum 12, Heaviest daily rainfall 16.

Records on 15 August 1921 by type
Record type	Records
Highest daily maximum	1
Lowest daily maximum	23
Highest daily minimum	3
Lowest daily minimum	12
Heaviest daily rainfall	16
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 15 August 1921 by timescale: all-time 0, monthly 1, daily 54.

How Much Records Were Beaten By

42 broken records

Margins by which the 42 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 63.3. Ties are not counted.

Top 20 by Significance

15 August 1921

Top 20 records on 15 August 1921 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 August 1921	Nidingen A, SE	daily rain	45.7 mm (1.8 in)	28.6 mm (1.1 in)	4 years	45 of 100 (Notable)
15 August 1921	Varberg, SE	daily rain	33.2 mm (1.3 in)	20.7 mm (0.8 in)	39 years	44 of 100 (Notable)
15 August 1921	Mena, US	daily rain	74.7 mm (2.9 in)	63.3 mm (2.5 in)	8 years	35 of 100 (Notable)
15 August 1921	Mena, US	daily low max	23.9 C (75.0 F)	4.4 C (7.9 F)	28 years	23 of 100 (Routine)
15 August 1921	World Trade Ctr, US	daily low min	14.4 C (57.9 F)	1.7 C (3.1 F)	39 years	22 of 100 (Routine)
15 August 1921	Nemours (Ghazaouet), DZ	daily low min	15.0 C (59.0 F)	1.2 C (2.2 F)	38 years	20 of 100 (Routine)
15 August 1921	Pitea, SE	daily high min	14.5 C (58.1 F)	1.5 C (2.7 F)	36 years	20 of 100 (Routine)
15 August 1921	Rogersville 1 NE, US	daily rain	41.9 mm (1.6 in)	12.2 mm (0.5 in)	20 years	20 of 100 (Routine)
15 August 1921	Tarnaby, SE	daily rain	19.0 mm (0.7 in)	4.0 mm (0.16 in)	30 years	19 of 100 (Routine)
15 August 1921	Boras, SE	daily rain	22.0 mm (0.9 in)	7.2 mm (0.28 in)	16 years	18 of 100 (Routine)
15 August 1921	Morris W Cntrl Rsch & Outreach, US	daily low min	3.9 C (39.0 F)	3.3 C (5.9 F)	25 years	18 of 100 (Routine)
15 August 1921	Lexington Bluegrass AP, US	daily low min	12.8 C (55.0 F)	1.1 C (2.0 F)	32 years	18 of 100 (Routine)
15 August 1921	Tranebjerg, DK	daily low max	13.2 C (55.8 F)	1.3 C (2.3 F)	32 years	17 of 100 (Routine)
15 August 1921	Koebenhavn: Landbohojskolen-1, DK	daily low max	14.1 C (57.4 F)	1.4 C (2.5 F)	32 years	17 of 100 (Routine)
15 August 1921	Karesuando, SE	daily high min	11.0 C (51.8 F)	1.0 C (1.8 F)	38 years	17 of 100 (Routine)
15 August 1921	Huron Rgnl AP, US	daily low max	16.7 C (62.1 F)	1.6 C (2.9 F)	32 years	16 of 100 (Routine)
15 August 1921	Ny City Cntrl Park, US	daily low min	13.3 C (55.9 F)	1.1 C (2.0 F)	27 years	16 of 100 (Routine)
15 August 1921	Halmstad, SE	daily low max	15.0 C (59.0 F)	0.5 C (0.9 F)	35 years	15 of 100 (Routine)
15 August 1921	Wilmington Wb City, US	daily low max	25.0 C (77.0 F)	1.1 C (2.0 F)	25 years	15 of 100 (Routine)
15 August 1921	Constantine, DZ	daily low max	26.0 C (78.8 F)	1.0 C (1.8 F)	31 years	14 of 100 (Routine)

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 1921

Records set or tied on this calendar date in each year from 1793 to 1921. 1921 had 55 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 1921-08-15: 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 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Margin	Records
0 to 10	38
10 to 20	1
20 to 30	2
30 to 40	0
40 to 50	0
50 to 60	0
60 to 70	1