Weather Records on 21 August 1918

202 weather records were set or tied worldwide on 21 August 1918. Highest significance: Hay (Miller Street), AU.

Key Facts for 21 August 1918

On 21 August 1918, 202 weather records were set or tied at long-record stations worldwide.
15 were record highs and 10 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 0 monthly and 202 daily.
Hay (Miller Street) set a daily record precipitation of 35.1 mm (1.4 in) on 21 August 1918.
Across 165 earlier years (1800 to 2026) the same calendar date averaged 451 records.

Record Map

202 stations

202 station records on 21 August 1918 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 August 1918: highest significance records shown on the map
Station	Country	Type	Value	Significance
Hay (Miller Street)	Australia	Record daily precipitation	35.1 mm (1.4 in)	47 of 100 (Notable)
Niznij Novgorod	Russia	Record daily precipitation	27.1 mm (1.1 in)	42 of 100 (Notable)
Boort	Australia	Record daily precipitation	26.7 mm (1.1 in)	39 of 100 (Notable)
Lake Marmal	Australia	Record daily precipitation	26.9 mm (1.1 in)	35 of 100 (Notable)
Kyneton Post Office	Australia	Record daily precipitation	32.0 mm (1.3 in)	35 of 100 (Notable)
Bungowannah Park	Australia	Record daily precipitation	29.2 mm (1.1 in)	34 of 100 (Routine)
Bridgewater (Memsie)	Australia	Record daily precipitation	26.7 mm (1.1 in)	34 of 100 (Routine)
Tallangatta Dcnr	Australia	Record daily precipitation	34.3 mm (1.4 in)	33 of 100 (Routine)
Malmsbury Reservoir	Australia	Record daily precipitation	29.2 mm (1.1 in)	33 of 100 (Routine)
Toronto	Canada	Record daily precipitation	49.5 mm (1.9 in)	32 of 100 (Routine)
Albury	Australia	Record daily precipitation	26.7 mm (1.1 in)	31 of 100 (Routine)
Wychitella South	Australia	Record daily precipitation	27.2 mm (1.1 in)	31 of 100 (Routine)
Kergunyah South	Australia	Record daily precipitation	38.1 mm (1.5 in)	31 of 100 (Routine)
Howlong Post Office	Australia	Record daily precipitation	29.2 mm (1.1 in)	30 of 100 (Routine)
Inglewood (Post Office)	Australia	Record daily precipitation	26.9 mm (1.1 in)	28 of 100 (Routine)
Tallangatta (Bullioh)	Australia	Record daily precipitation	30.5 mm (1.2 in)	28 of 100 (Routine)
Beechworth Composite	Australia	Record daily precipitation	27.9 mm (1.1 in)	25 of 100 (Routine)
Metcalfe	Australia	Record daily precipitation	28.7 mm (1.1 in)	25 of 100 (Routine)
Lakefield	Canada	Record daily precipitation	52.1 mm (2.1 in)	25 of 100 (Routine)
Fairlight Station	Australia	Record daily precipitation	34.3 mm (1.4 in)	24 of 100 (Routine)
Barkers Creek Reservoir	Australia	Record daily precipitation	27.7 mm (1.1 in)	24 of 100 (Routine)
Dublin Phoenix Park	Ireland	Record high maximum temperature	25.6 C (78.1 F)	23 of 100 (Routine)
Yackandandah	Australia	Record daily precipitation	35.3 mm (1.4 in)	22 of 100 (Routine)
Lancefield	Australia	Record daily precipitation	25.7 mm (1.0 in)	22 of 100 (Routine)
Jacksonville Wb City	United States	Record low maximum temperature	26.7 C (80.1 F)	22 of 100 (Routine)
Oakey Creek	Australia	Record daily precipitation	27.4 mm (1.1 in)	21 of 100 (Routine)
Gredgwin (Barraport North)	Australia	Record daily precipitation	23.9 mm (0.9 in)	20 of 100 (Routine)
Jeruk	Australia	Record daily precipitation	22.4 mm (0.9 in)	20 of 100 (Routine)
Tittybong Pine Grove Farm	Australia	Record daily precipitation	22.9 mm (0.9 in)	20 of 100 (Routine)
Kerang (Meran Downs)	Australia	Record daily precipitation	21.8 mm (0.9 in)	20 of 100 (Routine)
Towaninnie	Australia	Record daily precipitation	19.8 mm (0.8 in)	20 of 100 (Routine)
Deniliquin (Wilkinson St)	Australia	Record daily precipitation	18.0 mm (0.7 in)	20 of 100 (Routine)
Dunolly	Australia	Record daily precipitation	19.3 mm (0.8 in)	20 of 100 (Routine)
Wanganella (Zara)	Australia	Record daily precipitation	23.1 mm (0.9 in)	20 of 100 (Routine)
Quambatook South	Australia	Record daily precipitation	19.1 mm (0.8 in)	20 of 100 (Routine)
Calga	Australia	Record daily precipitation	21.8 mm (0.9 in)	20 of 100 (Routine)
Barnawartha	Australia	Record daily precipitation	23.4 mm (0.9 in)	20 of 100 (Routine)
Bendigo Prison	Australia	Record daily precipitation	24.9 mm (1.0 in)	20 of 100 (Routine)
Tarnagulla	Australia	Record daily precipitation	20.3 mm (0.8 in)	20 of 100 (Routine)
Cobar (Meryula)	Australia	Record daily precipitation	17.8 mm (0.7 in)	20 of 100 (Routine)
Cobar Post Office	Australia	Record daily precipitation	14.7 mm (0.6 in)	20 of 100 (Routine)
Booligal (Ulonga)	Australia	Record daily precipitation	18.5 mm (0.7 in)	20 of 100 (Routine)
Minimay (Booroopki)	Australia	Record daily precipitation	18.3 mm (0.7 in)	20 of 100 (Routine)
Canary Island	Australia	Record daily precipitation	22.1 mm (0.9 in)	20 of 100 (Routine)
Dumosa	Australia	Record daily precipitation	16.8 mm (0.7 in)	20 of 100 (Routine)
Lillimur Estate	Australia	Record daily precipitation	14.2 mm (0.6 in)	20 of 100 (Routine)
Goulburn River @ Shepparton	Australia	Record daily precipitation	17.0 mm (0.7 in)	20 of 100 (Routine)
Kaniva	Australia	Record daily precipitation	13.0 mm (0.5 in)	20 of 100 (Routine)
Brim (Boswell Park)	Australia	Record daily precipitation	12.2 mm (0.5 in)	20 of 100 (Routine)
Numurkah Post Office	Australia	Record daily precipitation	18.3 mm (0.7 in)	20 of 100 (Routine)
Euroa	Australia	Record daily precipitation	24.1 mm (0.9 in)	20 of 100 (Routine)
Miltalie (Poodra)	Australia	Record daily precipitation	11.4 mm (0.4 in)	20 of 100 (Routine)
Bordertown	Australia	Record daily precipitation	15.5 mm (0.6 in)	20 of 100 (Routine)
Mathoura (Mathoura Station)	Australia	Record daily precipitation	16.8 mm (0.7 in)	20 of 100 (Routine)
Lake Corrong	Australia	Record daily precipitation	10.4 mm (0.4 in)	20 of 100 (Routine)
Alexandra (Post Office)	Australia	Record daily precipitation	19.1 mm (0.8 in)	20 of 100 (Routine)
Fryerstown	Australia	Record daily precipitation	16.3 mm (0.6 in)	20 of 100 (Routine)
Talbot	Australia	Record daily precipitation	12.2 mm (0.5 in)	20 of 100 (Routine)
Escanaba	United States	Record high minimum temperature	20.0 C (68.0 F)	20 of 100 (Routine)
Belair (State Flora Nursery)	Australia	Record daily precipitation	23.4 mm (0.9 in)	19 of 100 (Routine)

Counts by Type and Timescale

202 records

Records set or tied on 21 August 1918 by type: Highest daily maximum 5, Lowest daily maximum 2, Highest daily minimum 10, Lowest daily minimum 8, Heaviest daily rainfall 177.

Records on 21 August 1918 by type
Record type	Records
Highest daily maximum	5
Lowest daily maximum	2
Highest daily minimum	10
Lowest daily minimum	8
Heaviest daily rainfall	177
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 21 August 1918 by timescale: all-time 0, monthly 0, daily 202.

How Much Records Were Beaten By

186 broken records

Margins by which the 186 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 27.7. Ties are not counted.

Top 20 by Significance

21 August 1918

Top 20 records on 21 August 1918 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 August 1918	Hay (Miller Street), AU	daily rain	35.1 mm (1.4 in)	27.7 mm (1.1 in)	11 years	47 of 100 (Notable)
21 August 1918	Niznij Novgorod, RU	daily rain	27.1 mm (1.1 in)	18.1 mm (0.7 in)	36 years	42 of 100 (Notable)
21 August 1918	Boort, AU	daily rain	26.7 mm (1.1 in)	19.6 mm (0.8 in)	0 years	39 of 100 (Notable)
21 August 1918	Lake Marmal, AU	daily rain	26.9 mm (1.1 in)	17.2 mm (0.7 in)	0 years	35 of 100 (Notable)
21 August 1918	Kyneton Post Office, AU	daily rain	32.0 mm (1.3 in)	18.0 mm (0.7 in)	28 years	35 of 100 (Notable)
21 August 1918	Bungowannah Park, AU	daily rain	29.2 mm (1.1 in)	17.5 mm (0.7 in)	22 years	34 of 100 (Routine)
21 August 1918	Bridgewater (Memsie), AU	daily rain	26.7 mm (1.1 in)	15.5 mm (0.6 in)	28 years	34 of 100 (Routine)
21 August 1918	Tallangatta Dcnr, AU	daily rain	34.3 mm (1.4 in)	18.0 mm (0.7 in)	23 years	33 of 100 (Routine)
21 August 1918	Malmsbury Reservoir, AU	daily rain	29.2 mm (1.1 in)	17.3 mm (0.7 in)	15 years	33 of 100 (Routine)
21 August 1918	Toronto, CA	daily rain	49.5 mm (1.9 in)	19.3 mm (0.8 in)	27 years	32 of 100 (Routine)
21 August 1918	Albury, AU	daily rain	26.7 mm (1.1 in)	11.5 mm (0.5 in)	31 years	31 of 100 (Routine)
21 August 1918	Wychitella South, AU	daily rain	27.2 mm (1.1 in)	15.5 mm (0.6 in)	9 years	31 of 100 (Routine)
21 August 1918	Kergunyah South, AU	daily rain	38.1 mm (1.5 in)	17.0 mm (0.7 in)	25 years	31 of 100 (Routine)
21 August 1918	Howlong Post Office, AU	daily rain	29.2 mm (1.1 in)	10.7 mm (0.4 in)	31 years	30 of 100 (Routine)
21 August 1918	Inglewood (Post Office), AU	daily rain	26.9 mm (1.1 in)	13.2 mm (0.5 in)	22 years	28 of 100 (Routine)
21 August 1918	Tallangatta (Bullioh), AU	daily rain	30.5 mm (1.2 in)	15.8 mm (0.6 in)	11 years	28 of 100 (Routine)
21 August 1918	Beechworth Composite, AU	daily rain	27.9 mm (1.1 in)	14.4 mm (0.6 in)	4 years	25 of 100 (Routine)
21 August 1918	Metcalfe, AU	daily rain	28.7 mm (1.1 in)	15.2 mm (0.6 in)	4 years	25 of 100 (Routine)
21 August 1918	Lakefield, CA	daily rain	52.1 mm (2.1 in)	20.9 mm (0.8 in)	16 years	25 of 100 (Routine)
21 August 1918	Fairlight Station, AU	daily rain	34.3 mm (1.4 in)	16.3 mm (0.6 in)	4 years	24 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 1918

Records set or tied on this calendar date in each year from 1800 to 1918. 1918 had 202 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 1918-08-21: 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).

Histogram of margins by which records were beaten on 21 August 1918
Margin	Records
0 to 5	87
5 to 10	56
10 to 15	25
15 to 20	16
20 to 25	1
25 to 30	1