Weather Records on 21 August 1928

110 weather records were set or tied worldwide on 21 August 1928. Highest significance: Altentreptow, DE.

Key Facts for 21 August 1928

On 21 August 1928, 110 weather records were set or tied at long-record stations worldwide.
36 were record highs and 23 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 3 monthly and 107 daily.
Altentreptow set a daily record precipitation of 58.3 mm (2.3 in) on 21 August 1928.
Across 165 earlier years (1800 to 2026) the same calendar date averaged 452 records.

Record Map

110 stations

110 station records on 21 August 1928 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 August 1928: highest significance records shown on the map
Station	Country	Type	Value	Significance
Altentreptow	Germany	Record daily precipitation	58.3 mm (2.3 in)	54 of 100 (Notable)
Plauen	Germany	Record daily precipitation	47.0 mm (1.9 in)	43 of 100 (Notable)
Hano_A	Sweden	Record daily precipitation	26.2 mm (1.0 in)	28 of 100 (Routine)
Jokkmokk	Sweden	Record high maximum temperature	23.8 C (74.8 F)	26 of 100 (Routine)
Hvar	Croatia	Record high maximum temperature	33.2 C (91.8 F)	25 of 100 (Routine)
Austin	United States	Record daily precipitation	41.9 mm (1.6 in)	25 of 100 (Routine)
White River	Canada	Record daily precipitation	38.1 mm (1.5 in)	23 of 100 (Routine)
Pointe Au Pere	Canada	Record high maximum temperature	25.0 C (77.0 F)	23 of 100 (Routine)
Neillsville 3ESE	United States	Record daily precipitation	50.8 mm (2.0 in)	23 of 100 (Routine)
New London	United States	Record daily precipitation	48.3 mm (1.9 in)	22 of 100 (Routine)
Inverell Comparison	Australia	Record high maximum temperature	23.3 C (73.9 F)	21 of 100 (Routine)
St Ignace	United States	Record daily precipitation	48.5 mm (1.9 in)	21 of 100 (Routine)
Santa Fe	United States	Record high minimum temperature	17.2 C (63.0 F)	21 of 100 (Routine)
La Crosse River	United States	Record daily precipitation	51.1 mm (2.0 in)	21 of 100 (Routine)
Nurnberg	Germany	Record daily precipitation	22.8 mm (0.9 in)	20 of 100 (Routine)
Karlshamn	Sweden	Record daily precipitation	24.7 mm (1.0 in)	20 of 100 (Routine)
Olands Sodra Udde	Sweden	Record daily precipitation	20.9 mm (0.8 in)	20 of 100 (Routine)
Bad Muskau	Germany	Record daily precipitation	23.6 mm (0.9 in)	20 of 100 (Routine)
Walgett Council Depot	Australia	Record high maximum temperature	29.4 C (84.9 F)	20 of 100 (Routine)
Lincoln Lock 4	United States	Record daily precipitation	36.8 mm (1.4 in)	19 of 100 (Routine)
Stevens Pt	United States	Record daily precipitation	79.8 mm (3.1 in)	19 of 100 (Routine)
Mykland	Norway	Record daily precipitation	26.5 mm (1.0 in)	18 of 100 (Routine)
Chemnitz	Germany	Record daily precipitation	14.6 mm (0.6 in)	17 of 100 (Routine)
Falsterbo	Sweden	Record daily precipitation	10.8 mm (0.4 in)	17 of 100 (Routine)
Gallivare_A	Sweden	Record high maximum temperature	25.5 C (77.9 F)	17 of 100 (Routine)
Ithaca Cornell UNIV	United States	Record daily precipitation	26.7 mm (1.1 in)	16 of 100 (Routine)
Kaisersbach-Cronhutte	Germany	Record daily precipitation	24.0 mm (0.9 in)	15 of 100 (Routine)
Goldberg	Germany	Record daily precipitation	14.2 mm (0.6 in)	15 of 100 (Routine)
Petropavlovskij Majak	Russia	Record daily precipitation	19.5 mm (0.8 in)	15 of 100 (Routine)
Petropavlovsk-Kamchatskij	Russia	Record daily precipitation	19.5 mm (0.8 in)	15 of 100 (Routine)
Tuscumbia	United States	Record low maximum temperature	24.4 C (75.9 F)	15 of 100 (Routine)
New Smyrna Beach	United States	Record low minimum temperature	20.0 C (68.0 F)	15 of 100 (Routine)
Warsaw	United States	Record daily precipitation	13.5 mm (0.5 in)	15 of 100 (Routine)
Kristianstad	Sweden	Record low maximum temperature	15.5 C (59.9 F)	14 of 100 (Routine)
Johnsonville	United States	Record low maximum temperature	25.6 C (78.1 F)	14 of 100 (Routine)
Levan	United States	Record high maximum temperature	35.6 C (96.1 F)	14 of 100 (Routine)
Grand River Lock	United States	Record daily precipitation	26.7 mm (1.1 in)	14 of 100 (Routine)
Laghouat	Algeria	Record high minimum temperature	25.0 C (77.0 F)	13 of 100 (Routine)
Kvikkjokk-Arrenjarka	Sweden	Record high minimum temperature	10.0 C (50.0 F)	13 of 100 (Routine)
Stockton 2	United States	Record high maximum temperature	38.3 C (100.9 F)	13 of 100 (Routine)
Bonaparte 5 NE	United States	Record daily precipitation	32.8 mm (1.3 in)	13 of 100 (Routine)
Yazoo City	United States	Record high minimum temperature	24.4 C (75.9 F)	13 of 100 (Routine)
Raton	United States	Record low minimum temperature	4.4 C (39.9 F)	13 of 100 (Routine)
Brookville	United States	Record daily precipitation	38.1 mm (1.5 in)	13 of 100 (Routine)
Manti	United States	Record high maximum temperature	37.2 C (99.0 F)	13 of 100 (Routine)
North Nicomen	Canada	Record low minimum temperature	7.2 C (45.0 F)	12 of 100 (Routine)
Plauen	Germany	Record low minimum temperature	3.6 C (38.5 F)	12 of 100 (Routine)
Wittstock-Rote Muhle	Germany	Record daily precipitation	10.3 mm (0.4 in)	12 of 100 (Routine)
Stuttgart	United States	Record daily precipitation	40.1 mm (1.6 in)	12 of 100 (Routine)
Brooksville Chin Hill	United States	Record high maximum temperature	37.2 C (99.0 F)	12 of 100 (Routine)
Tarboro 1 S	United States	Record daily precipitation	22.9 mm (0.9 in)	12 of 100 (Routine)
Delaware	United States	Record high minimum temperature	22.8 C (73.0 F)	12 of 100 (Routine)
Yuma Wb City	United States	Record high minimum temperature	28.9 C (84.0 F)	12 of 100 (Routine)
Charleville Post Office	Australia	Record high maximum temperature	31.1 C (88.0 F)	11 of 100 (Routine)
Ueckermunde	Germany	Record daily precipitation	14.0 mm (0.6 in)	11 of 100 (Routine)
Cairo River	United States	Record daily precipitation	14.2 mm (0.6 in)	11 of 100 (Routine)
Mackinaw City 2	United States	Record daily precipitation	39.4 mm (1.6 in)	11 of 100 (Routine)
Cowles	United States	Record high maximum temperature	28.9 C (84.0 F)	11 of 100 (Routine)
Viroqua	United States	Record daily precipitation	29.2 mm (1.1 in)	11 of 100 (Routine)
Independence	United States	Record daily precipitation	22.6 mm (0.9 in)	10 of 100 (Routine)

Counts by Type and Timescale

110 records

Records set or tied on 21 August 1928 by type: Highest daily maximum 19, Lowest daily maximum 11, Highest daily minimum 17, Lowest daily minimum 12, Heaviest daily rainfall 51.

Records on 21 August 1928 by type
Record type	Records
Highest daily maximum	19
Lowest daily maximum	11
Highest daily minimum	17
Lowest daily minimum	12
Heaviest daily rainfall	51
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 21 August 1928 by timescale: all-time 0, monthly 3, daily 107.

How Much Records Were Beaten By

82 broken records

Margins by which the 82 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 37.4. Ties are not counted.

Top 20 by Significance

21 August 1928

Top 20 records on 21 August 1928 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 August 1928	Altentreptow, DE	daily rain	58.3 mm (2.3 in)	37.4 mm (1.5 in)	36 years	54 of 100 (Notable)
21 August 1928	Plauen, DE	daily rain	47.0 mm (1.9 in)	27.9 mm (1.1 in)	11 years	43 of 100 (Notable)
21 August 1928	Hano_A, SE	daily rain	26.2 mm (1.0 in)	16.7 mm (0.7 in)	1 year	28 of 100 (Routine)
21 August 1928	Jokkmokk, SE	daily high max	23.8 C (74.8 F)	3.8 C (6.8 F)	44 years	26 of 100 (Routine)
21 August 1928	Hvar, HR	daily high max	33.2 C (91.8 F)	1.2 C (2.2 F)	50 years	25 of 100 (Routine)
21 August 1928	Austin, US	daily rain	41.9 mm (1.6 in)	35.5 mm (1.4 in)	8 years	25 of 100 (Routine)
21 August 1928	White River, CA	daily rain	38.1 mm (1.5 in)	15.2 mm (0.6 in)	9 years	23 of 100 (Routine)
21 August 1928	Pointe Au Pere, CA	daily high max	25.0 C (77.0 F)	1.1 C (2.0 F)	50 years	23 of 100 (Routine)
21 August 1928	Neillsville 3ESE, US	daily rain	50.8 mm (2.0 in)	27.4 mm (1.1 in)	5 years	23 of 100 (Routine)
21 August 1928	New London, US	daily rain	48.3 mm (1.9 in)	25.4 mm (1.0 in)	5 years	22 of 100 (Routine)
21 August 1928	Inverell Comparison, AU	daily high max	23.3 C (73.9 F)	1.1 C (2.0 F)	44 years	21 of 100 (Routine)
21 August 1928	St Ignace, US	daily rain	48.5 mm (1.9 in)	19.3 mm (0.8 in)	25 years	21 of 100 (Routine)
21 August 1928	Santa Fe, US	daily high min	17.2 C (63.0 F)	0.5 C (0.9 F)	49 years	21 of 100 (Routine)
21 August 1928	La Crosse River, US	daily rain	51.1 mm (2.0 in)	23.9 mm (0.9 in)	5 years	21 of 100 (Routine)
21 August 1928	Nurnberg, DE	daily rain	22.8 mm (0.9 in)	12.6 mm (0.5 in)	28 years	20 of 100 (Routine)
21 August 1928	Karlshamn, SE	daily rain	24.7 mm (1.0 in)	9.1 mm (0.36 in)	42 years	20 of 100 (Routine)
21 August 1928	Olands Sodra Udde, SE	daily rain	20.9 mm (0.8 in)	6.4 mm (0.25 in)	42 years	20 of 100 (Routine)
21 August 1928	Bad Muskau, DE	daily rain	23.6 mm (0.9 in)	8.7 mm (0.34 in)	18 years	20 of 100 (Routine)
21 August 1928	Walgett Council Depot, AU	daily high max	29.4 C (84.9 F)	0.5 C (0.9 F)	47 years	20 of 100 (Routine)
21 August 1928	Lincoln Lock 4, US	daily rain	36.8 mm (1.4 in)	17.7 mm (0.7 in)	13 years	19 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

1800 to 1928

Records set or tied on this calendar date in each year from 1800 to 1928. 1928 had 110 records.

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

Records on 08-21 in each year
Year	Records
1800	1
1802	1
1804	1
1807	1
1816	1
1818	1
1832	1
1834	1
1839	3
1843	1
1847	1
1849	3
1850	1
1851	2
1863	1
1866	1
1867	2
1870	3
1871	2
1872	1
1873	1
1876	1
1877	2
1879	2
1884	2
1885	5
1886	1
1887	5
1888	2
1889	3
1890	4
1891	2
1893	4
1894	8
1895	3
1896	2
1897	4
1898	4
1899	7
1900	4
1901	9
1902	8
1903	6
1904	8
1905	4
1906	22
1907	20
1908	13
1909	17
1910	33
1911	19
1912	50
1913	37
1914	24
1915	21
1916	106
1917	101
1918	202
1919	19
1920	59
1921	34
1922	58
1923	111
1924	135
1925	220
1926	227
1927	228
1928	110
1929	234
1930	297
1931	277
1932	264
1933	328
1934	320
1935	318
1936	807
1937	762
1938	239
1939	630
1940	683
1941	180
1942	415
1943	438
1944	346
1945	544
1946	390
1947	954
1948	305
1949	508
1950	958
1951	699
1952	368
1953	331
1954	497
1955	885
1956	701
1957	490
1958	389
1959	704
1960	490
1961	644
1962	469
1963	338
1964	794
1965	455
1966	661
1967	541
1968	1,014
1969	650
1970	373
1971	660
1972	441
1973	438
1974	564
1975	545
1976	756
1977	764
1978	445
1979	778
1980	904
1981	1,015
1982	769
1983	1,407
1984	975
1985	623
1986	1,166
1987	740
1988	889
1989	828
1990	910
1991	828
1992	957
1993	698
1994	968
1995	962
1996	950
1997	1,291
1998	948
1999	717
2000	861
2001	797
2002	965
2003	1,241
2004	1,585
2005	1,071
2006	797
2007	1,829
2008	1,012
2009	1,319
2010	1,155
2011	1,022
2012	990
2013	513
2014	624
2015	651
2016	890
2017	347
2018	816
2019	631
2020	1,147
2021	767
2022	917
2023	1,826
2024	777
2025	1,230
2026	1,289

Download the Data

Data for records on 1928-08-21: 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Margin	Records
0 to 5	56
5 to 10	13
10 to 15	3
15 to 20	4
20 to 25	1
25 to 30	3
30 to 35	0
35 to 40	2