Weather Records on 21 August 1916

106 weather records were set or tied worldwide on 21 August 1916. Highest significance: Sevastopol',Mgs, UA.

Key Facts for 21 August 1916

On 21 August 1916, 106 weather records were set or tied at long-record stations worldwide.
62 were record highs and 17 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 8 monthly and 97 daily.
Sevastopol',Mgs set a daily record precipitation of 31.5 mm (1.2 in) on 21 August 1916.
Across 165 earlier years (1800 to 2026) the same calendar date averaged 452 records.

Record Map

106 stations

106 station records on 21 August 1916 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 August 1916: highest significance records shown on the map
Station	Country	Type	Value	Significance
Sevastopol',Mgs	Ukraine	Record daily precipitation	31.5 mm (1.2 in)	40 of 100 (Notable)
Huron Rgnl AP	United States	Record daily precipitation	42.9 mm (1.7 in)	40 of 100 (Notable)
Leipzig-Holzhausen	Germany	Record daily precipitation	37.7 mm (1.5 in)	36 of 100 (Notable)
Toledo Blade	United States	Record high minimum temperature	27.2 C (81.0 F)	33 of 100 (Routine)
Fredericton Unb	Canada	Record high maximum temperature	34.4 C (93.9 F)	28 of 100 (Routine)
Woodstock	Canada	Record high maximum temperature	35.0 C (95.0 F)	27 of 100 (Routine)
Windsor Riverside	Canada	Record high minimum temperature	23.9 C (75.0 F)	26 of 100 (Routine)
Stratford	Canada	Record high maximum temperature	36.7 C (98.1 F)	26 of 100 (Routine)
Barrie	Canada	Record high maximum temperature	35.0 C (95.0 F)	25 of 100 (Routine)
Toronto	Canada	Record high maximum temperature	36.7 C (98.1 F)	25 of 100 (Routine)
Toledo Blade	United States	Record high maximum temperature	36.7 C (98.1 F)	25 of 100 (Routine)
Toronto	Canada	Record high minimum temperature	23.9 C (75.0 F)	24 of 100 (Routine)
Quebec	Canada	Record high minimum temperature	21.7 C (71.1 F)	24 of 100 (Routine)
Beatrice	Canada	Record high maximum temperature	32.2 C (90.0 F)	23 of 100 (Routine)
Hamilton	Canada	Record high maximum temperature	36.7 C (98.1 F)	23 of 100 (Routine)
Cape May 2 NW	United States	Record high maximum temperature	31.7 C (89.1 F)	22 of 100 (Routine)
Perth Regional Office	Australia	Record daily precipitation	36.6 mm (1.4 in)	21 of 100 (Routine)
Lindsay	Canada	Record high maximum temperature	36.7 C (98.1 F)	21 of 100 (Routine)
Jena Sternwarte	Germany	Record daily precipitation	13.7 mm (0.5 in)	20 of 100 (Routine)
Daly Waters	Australia	Record daily precipitation	14.0 mm (0.6 in)	20 of 100 (Routine)
Port Arthur	Canada	Record daily precipitation	19.3 mm (0.8 in)	20 of 100 (Routine)
Stonecliffe	Canada	Record high maximum temperature	31.7 C (89.1 F)	20 of 100 (Routine)
Yarrawonga Post Office	Australia	Record daily precipitation	19.3 mm (0.8 in)	19 of 100 (Routine)
Parry Sound	Canada	Record high maximum temperature	34.4 C (93.9 F)	19 of 100 (Routine)
Windsor Riverside	Canada	Record high maximum temperature	35.6 C (96.1 F)	19 of 100 (Routine)
Nikolaevsk-Na-Amure	Russia	Record daily precipitation	20.3 mm (0.8 in)	19 of 100 (Routine)
Morris W Cntrl Rsch & Outreach	United States	Record daily precipitation	35.1 mm (1.4 in)	19 of 100 (Routine)
Kingston Queens U	Canada	Record high maximum temperature	31.1 C (88.0 F)	18 of 100 (Routine)
Chatham	Canada	Record high minimum temperature	20.0 C (68.0 F)	18 of 100 (Routine)
Tumut (Red Hill Station)	Australia	Record daily precipitation	29.0 mm (1.1 in)	17 of 100 (Routine)
Port Stanley	Canada	Record high maximum temperature	31.7 C (89.1 F)	17 of 100 (Routine)
Guelph Oac	Canada	Record high maximum temperature	35.0 C (95.0 F)	17 of 100 (Routine)
Dalhousie	Canada	Record high maximum temperature	30.6 C (87.1 F)	17 of 100 (Routine)
Philadelphia City	United States	Record high maximum temperature	35.6 C (96.1 F)	17 of 100 (Routine)
Horsham Polkemmet Rd	Australia	Record daily precipitation	9.4 mm (0.37 in)	16 of 100 (Routine)
Ottawa	Canada	Record high minimum temperature	22.8 C (73.0 F)	16 of 100 (Routine)
Karesuando	Sweden	Record low maximum temperature	7.5 C (45.5 F)	16 of 100 (Routine)
Concord	United States	Record high maximum temperature	34.4 C (93.9 F)	16 of 100 (Routine)
La Crosse Wb City	United States	Record high maximum temperature	35.6 C (96.1 F)	16 of 100 (Routine)
Salzburg	Austria	Record low maximum temperature	12.8 C (55.0 F)	15 of 100 (Routine)
London South	Canada	Record high maximum temperature	37.2 C (99.0 F)	15 of 100 (Routine)
Hamilton	Canada	Record high minimum temperature	22.2 C (72.0 F)	15 of 100 (Routine)
Anticosti SW Point	Canada	Record high minimum temperature	15.0 C (59.0 F)	15 of 100 (Routine)
Stockholm	Sweden	Record low maximum temperature	12.0 C (53.6 F)	15 of 100 (Routine)
Newark Liberty Intl AP	United States	Record high maximum temperature	35.6 C (96.1 F)	15 of 100 (Routine)
Yorketown	Australia	Record daily precipitation	5.1 mm (0.20 in)	14 of 100 (Routine)
Port Dover	Canada	Record high minimum temperature	22.8 C (73.0 F)	14 of 100 (Routine)
Lindsay	Canada	Record high minimum temperature	20.0 C (68.0 F)	14 of 100 (Routine)
Montreal McGill	Canada	Record high maximum temperature	33.3 C (91.9 F)	14 of 100 (Routine)
St. Petersburg	Russia	Record high maximum temperature	26.7 C (80.1 F)	14 of 100 (Routine)
Jokkmokk	Sweden	Record low maximum temperature	8.0 C (46.4 F)	14 of 100 (Routine)
Buffalo	United States	Record high minimum temperature	23.3 C (73.9 F)	14 of 100 (Routine)
Beales Reservoir	Australia	Record daily precipitation	14.0 mm (0.6 in)	13 of 100 (Routine)
Port Dover	Canada	Record high maximum temperature	33.3 C (91.9 F)	13 of 100 (Routine)
Gorlitz	Germany	Record daily precipitation	17.8 mm (0.7 in)	13 of 100 (Routine)
Jokkmokk	Sweden	Record daily precipitation	21.4 mm (0.8 in)	13 of 100 (Routine)
Maldon (Derby Hill)	Australia	Record daily precipitation	11.9 mm (0.5 in)	12 of 100 (Routine)
Parry Sound	Canada	Record high minimum temperature	20.0 C (68.0 F)	12 of 100 (Routine)
Blue Hill Coop	United States	Record high maximum temperature	30.6 C (87.1 F)	12 of 100 (Routine)
Burlington	United States	Record high maximum temperature	33.9 C (93.0 F)	12 of 100 (Routine)

Counts by Type and Timescale

106 records

Records set or tied on 21 August 1916 by type: Highest daily maximum 36, Lowest daily maximum 16, Highest daily minimum 26, Lowest daily minimum 1, Heaviest daily rainfall 27.

Records on 21 August 1916 by type
Record type	Records
Highest daily maximum	36
Lowest daily maximum	16
Highest daily minimum	26
Lowest daily minimum	1
Heaviest daily rainfall	27
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 21 August 1916 by timescale: all-time 1, monthly 8, daily 97.

How Much Records Were Beaten By

83 broken records

Margins by which the 83 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 28.4. Ties are not counted.

Top 20 by Significance

21 August 1916

Top 20 records on 21 August 1916 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 August 1916	Sevastopol',Mgs, UA	daily rain	31.5 mm (1.2 in)	27.3 mm (1.1 in)	27 years	40 of 100 (Notable)
21 August 1916	Huron Rgnl AP, US	daily rain	42.9 mm (1.7 in)	28.4 mm (1.1 in)	33 years	40 of 100 (Notable)
21 August 1916	Leipzig-Holzhausen, DE	daily rain	37.7 mm (1.5 in)	12.9 mm (0.5 in)	38 years	36 of 100 (Notable)
21 August 1916	Toledo Blade, US	all-time high min	27.2 C (81.0 F)	1.1 C (2.0 F)	20 years	33 of 100 (Routine)
21 August 1916	Fredericton Unb, CA	daily high max	34.4 C (93.9 F)	4.4 C (7.9 F)	40 years	28 of 100 (Routine)
21 August 1916	Woodstock, CA	daily high max	35.0 C (95.0 F)	4.4 C (7.9 F)	42 years	27 of 100 (Routine)
21 August 1916	Windsor Riverside, CA	daily high min	23.9 C (75.0 F)	2.8 C (5.0 F)	43 years	26 of 100 (Routine)
21 August 1916	Stratford, CA	monthly high max	36.7 C (98.1 F)	0.6 C (1.1 F)	34 years	26 of 100 (Routine)
21 August 1916	Barrie, CA	daily high max	35.0 C (95.0 F)	3.3 C (5.9 F)	42 years	25 of 100 (Routine)
21 August 1916	Toronto, CA	daily high max	36.7 C (98.1 F)	4.5 C (8.1 F)	16 years	25 of 100 (Routine)
21 August 1916	Toledo Blade, US	daily high max	36.7 C (98.1 F)	3.4 C (6.1 F)	41 years	25 of 100 (Routine)
21 August 1916	Toronto, CA	monthly high min	23.9 C (75.0 F)	1.1 C (2.0 F)	16 years	24 of 100 (Routine)
21 August 1916	Quebec, CA	monthly high min	21.7 C (71.1 F)	0.6 C (1.1 F)	31 years	24 of 100 (Routine)
21 August 1916	Beatrice, CA	daily high max	32.2 C (90.0 F)	3.3 C (5.9 F)	38 years	23 of 100 (Routine)
21 August 1916	Hamilton, CA	daily high max	36.7 C (98.1 F)	3.9 C (7.0 F)	31 years	23 of 100 (Routine)
21 August 1916	Cape May 2 NW, US	daily high max	31.7 C (89.1 F)	2.3 C (4.1 F)	32 years	22 of 100 (Routine)
21 August 1916	Perth Regional Office, AU	daily rain	36.6 mm (1.4 in)	11.2 mm (0.4 in)	19 years	21 of 100 (Routine)
21 August 1916	Lindsay, CA	daily high max	36.7 C (98.1 F)	3.9 C (7.0 F)	31 years	21 of 100 (Routine)
21 August 1916	Jena Sternwarte, DE	daily rain	13.7 mm (0.5 in)	0.6 mm (0.02 in)	85 years	20 of 100 (Routine)
21 August 1916	Daly Waters, AU	daily rain	14.0 mm (0.6 in)	14.0 mm (0.6 in)	42 years	20 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 1916

Records set or tied on this calendar date in each year from 1800 to 1916. 1916 had 106 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 1916-08-21: 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	73
5 to 10	4
10 to 15	3
15 to 20	1
20 to 25	0
25 to 30	2