Weather Records on 21 July 1918

130 weather records were set or tied worldwide on 21 July 1918. Highest significance: Gnomery, AU.

Key Facts for 21 July 1918

On 21 July 1918, 130 weather records were set or tied at long-record stations worldwide.
34 were record highs and 7 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 1 monthly and 129 daily.
Gnomery set a daily record precipitation of 41.9 mm (1.6 in) on 21 July 1918.
Across 159 earlier years (1794 to 2026) the same calendar date averaged 469 records.

Record Map

130 stations

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

Weather records on 21 July 1918: highest significance records shown on the map
Station	Country	Type	Value	Significance
Gnomery	Australia	Record daily precipitation	41.9 mm (1.6 in)	44 of 100 (Notable)
Brewarrina (Talawanta)	Australia	Record daily precipitation	29.5 mm (1.2 in)	42 of 100 (Notable)
Ledknapper Tank	Australia	Record daily precipitation	33.0 mm (1.3 in)	40 of 100 (Notable)
Enngonia (Morton Plains)	Australia	Record daily precipitation	31.8 mm (1.3 in)	37 of 100 (Notable)
Urawilkie	Australia	Record daily precipitation	34.3 mm (1.4 in)	33 of 100 (Routine)
Eulo Post Office	Australia	Record daily precipitation	26.9 mm (1.1 in)	32 of 100 (Routine)
Collerina (Corrella)	Australia	Record daily precipitation	26.7 mm (1.1 in)	32 of 100 (Routine)
Goodooga (Brenda)	Australia	Record daily precipitation	31.0 mm (1.2 in)	31 of 100 (Routine)
Bomera	Australia	Record daily precipitation	26.7 mm (1.1 in)	25 of 100 (Routine)
Stratford	Canada	Record high maximum temperature	34.4 C (93.9 F)	23 of 100 (Routine)
Merriwa (Gummun Place)	Australia	Record daily precipitation	33.8 mm (1.3 in)	22 of 100 (Routine)
Hamilton	Canada	Record high maximum temperature	36.1 C (97.0 F)	22 of 100 (Routine)
Biamble	Australia	Record daily precipitation	27.9 mm (1.1 in)	21 of 100 (Routine)
Jacksonville Wb City	United States	Record daily precipitation	42.9 mm (1.7 in)	21 of 100 (Routine)
Thargomindah Post Office	Australia	Record daily precipitation	16.3 mm (0.6 in)	20 of 100 (Routine)
Boorara	Australia	Record daily precipitation	20.6 mm (0.8 in)	20 of 100 (Routine)
Dumble	Australia	Record daily precipitation	22.6 mm (0.9 in)	20 of 100 (Routine)
Bingara Post Office	Australia	Record daily precipitation	22.9 mm (0.9 in)	20 of 100 (Routine)
Robertsons Mount	Australia	Record daily precipitation	21.8 mm (0.9 in)	20 of 100 (Routine)
Ladismith (Tnk)	South Africa	Record daily precipitation	20.3 mm (0.8 in)	20 of 100 (Routine)
Yantabulla (Brindingabba)	Australia	Record daily precipitation	21.8 mm (0.9 in)	20 of 100 (Routine)
Warren (Haddon Rig)	Australia	Record daily precipitation	20.8 mm (0.8 in)	20 of 100 (Routine)
Chaplin	Canada	Record daily precipitation	15.0 mm (0.6 in)	20 of 100 (Routine)
Gilgoin	Australia	Record daily precipitation	16.5 mm (0.6 in)	20 of 100 (Routine)
Cunnamulla Post Office	Australia	Record daily precipitation	21.3 mm (0.8 in)	20 of 100 (Routine)
Bredasdorp	South Africa	Record daily precipitation	10.2 mm (0.4 in)	20 of 100 (Routine)
Dinby	Australia	Record daily precipitation	24.1 mm (0.9 in)	20 of 100 (Routine)
Currawinya	Australia	Record daily precipitation	16.3 mm (0.6 in)	20 of 100 (Routine)
Coonamble (Pier Pier)	Australia	Record daily precipitation	14.7 mm (0.6 in)	20 of 100 (Routine)
Walgett (Goangra)	Australia	Record daily precipitation	18.3 mm (0.7 in)	20 of 100 (Routine)
Gragin	Australia	Record daily precipitation	16.0 mm (0.6 in)	20 of 100 (Routine)
Combogolong	Australia	Record daily precipitation	17.0 mm (0.7 in)	20 of 100 (Routine)
Katberg (Bos)	South Africa	Record daily precipitation	12.2 mm (0.5 in)	20 of 100 (Routine)
Jacksonville Wb City	United States	Record low minimum temperature	20.6 C (69.1 F)	20 of 100 (Routine)
Hungerford	Australia	Record daily precipitation	11.2 mm (0.4 in)	19 of 100 (Routine)
Warren (Eenaweena)	Australia	Record daily precipitation	12.4 mm (0.5 in)	19 of 100 (Routine)
Warren (Mumblebone)	Australia	Record daily precipitation	12.4 mm (0.5 in)	19 of 100 (Routine)
Walgett (Dungalear)	Australia	Record daily precipitation	16.3 mm (0.6 in)	18 of 100 (Routine)
Glenariff	Australia	Record daily precipitation	11.9 mm (0.5 in)	18 of 100 (Routine)
Coonimbia	Australia	Record daily precipitation	16.5 mm (0.6 in)	18 of 100 (Routine)
Grenfell	Canada	Record daily precipitation	11.7 mm (0.5 in)	18 of 100 (Routine)
Brantford	Canada	Record high maximum temperature	36.1 C (97.0 F)	18 of 100 (Routine)
World Trade Ctr	United States	Record high minimum temperature	22.8 C (73.0 F)	18 of 100 (Routine)
Bunghill Tank	Australia	Record daily precipitation	12.7 mm (0.5 in)	17 of 100 (Routine)
Walma	Australia	Record daily precipitation	11.4 mm (0.4 in)	17 of 100 (Routine)
Denman (Martindale)	Australia	Record daily precipitation	21.6 mm (0.9 in)	17 of 100 (Routine)
Goulburn (Kippilaw)	Australia	Record daily precipitation	19.1 mm (0.8 in)	17 of 100 (Routine)
Medicine Hat A	Canada	Record daily precipitation	22.6 mm (0.9 in)	17 of 100 (Routine)
Hvar	Croatia	Record high minimum temperature	25.3 C (77.5 F)	17 of 100 (Routine)
Kieskamahoek (Pol)	South Africa	Record daily precipitation	5.6 mm (0.22 in)	17 of 100 (Routine)
Pirie (Bos)	South Africa	Record daily precipitation	4.6 mm (0.18 in)	17 of 100 (Routine)
Stornoway Airport	United Kingdom	Record low maximum temperature	12.8 C (55.0 F)	17 of 100 (Routine)
Nyngan Airport	Australia	Record daily precipitation	9.9 mm (0.39 in)	16 of 100 (Routine)
Gunnee	Australia	Record daily precipitation	18.3 mm (0.7 in)	16 of 100 (Routine)
Lucknow	Canada	Record high maximum temperature	33.3 C (91.9 F)	16 of 100 (Routine)
Peterborough	Canada	Record high maximum temperature	35.0 C (95.0 F)	16 of 100 (Routine)
Beechal	Australia	Record daily precipitation	44.5 mm (1.8 in)	15 of 100 (Routine)
Lila Lower	Australia	Record daily precipitation	10.2 mm (0.4 in)	15 of 100 (Routine)
Warrumbungle (Cheddington)	Australia	Record daily precipitation	20.3 mm (0.8 in)	15 of 100 (Routine)
London South	Canada	Record high maximum temperature	36.1 C (97.0 F)	15 of 100 (Routine)

Counts by Type and Timescale

130 records

Records set or tied on 21 July 1918 by type: Highest daily maximum 29, Lowest daily maximum 2, Highest daily minimum 5, Lowest daily minimum 5, Heaviest daily rainfall 89.

Records on 21 July 1918 by type
Record type	Records
Highest daily maximum	29
Lowest daily maximum	2
Highest daily minimum	5
Lowest daily minimum	5
Heaviest daily rainfall	89
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 21 July 1918 by timescale: all-time 0, monthly 1, daily 129.

How Much Records Were Beaten By

122 broken records

Margins by which the 122 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 38.6. Ties are not counted.

Top 20 by Significance

21 July 1918

Top 20 records on 21 July 1918 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 July 1918	Gnomery, AU	daily rain	41.9 mm (1.6 in)	38.6 mm (1.5 in)	9 years	44 of 100 (Notable)
21 July 1918	Brewarrina (Talawanta), AU	daily rain	29.5 mm (1.2 in)	28.2 mm (1.1 in)	9 years	42 of 100 (Notable)
21 July 1918	Ledknapper Tank, AU	daily rain	33.0 mm (1.3 in)	32.0 mm (1.3 in)	9 years	40 of 100 (Notable)
21 July 1918	Enngonia (Morton Plains), AU	daily rain	31.8 mm (1.3 in)	28.0 mm (1.1 in)	13 years	37 of 100 (Notable)
21 July 1918	Urawilkie, AU	daily rain	34.3 mm (1.4 in)	29.5 mm (1.2 in)	17 years	33 of 100 (Routine)
21 July 1918	Eulo Post Office, AU	daily rain	26.9 mm (1.1 in)	25.9 mm (1.0 in)	9 years	32 of 100 (Routine)
21 July 1918	Collerina (Corrella), AU	daily rain	26.7 mm (1.1 in)	23.7 mm (0.9 in)	9 years	32 of 100 (Routine)
21 July 1918	Goodooga (Brenda), AU	daily rain	31.0 mm (1.2 in)	28.5 mm (1.1 in)	9 years	31 of 100 (Routine)
21 July 1918	Bomera, AU	daily rain	26.7 mm (1.1 in)	22.1 mm (0.9 in)	9 years	25 of 100 (Routine)
21 July 1918	Stratford, CA	daily high max	34.4 C (93.9 F)	2.7 C (4.9 F)	38 years	23 of 100 (Routine)
21 July 1918	Merriwa (Gummun Place), AU	daily rain	33.8 mm (1.3 in)	24.9 mm (1.0 in)	13 years	22 of 100 (Routine)
21 July 1918	Hamilton, CA	daily high max	36.1 C (97.0 F)	2.8 C (5.0 F)	38 years	22 of 100 (Routine)
21 July 1918	Biamble, AU	daily rain	27.9 mm (1.1 in)	13.9 mm (0.5 in)	9 years	21 of 100 (Routine)
21 July 1918	Jacksonville Wb City, US	daily rain	42.9 mm (1.7 in)	19.0 mm (0.7 in)	16 years	21 of 100 (Routine)
21 July 1918	Thargomindah Post Office, AU	daily rain	16.3 mm (0.6 in)	16.3 mm (0.6 in)	37 years	20 of 100 (Routine)
21 July 1918	Boorara, AU	daily rain	20.6 mm (0.8 in)	19.6 mm (0.8 in)	13 years	20 of 100 (Routine)
21 July 1918	Dumble, AU	daily rain	22.6 mm (0.9 in)	17.8 mm (0.7 in)	34 years	20 of 100 (Routine)
21 July 1918	Bingara Post Office, AU	daily rain	22.9 mm (0.9 in)	16.3 mm (0.6 in)	38 years	20 of 100 (Routine)
21 July 1918	Robertsons Mount, AU	daily rain	21.8 mm (0.9 in)	17.2 mm (0.7 in)	21 years	20 of 100 (Routine)
21 July 1918	Ladismith (Tnk), ZA	daily rain	20.3 mm (0.8 in)	11.7 mm (0.5 in)	20 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

1794 to 1918

Records set or tied on this calendar date in each year from 1794 to 1918. 1918 had 130 records.

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

Records on 07-21 in each year
Year	Records
1794	1
1795	1
1796	1
1797	1
1813	2
1832	2
1837	1
1839	1
1843	1
1844	2
1854	1
1859	3
1865	3
1868	3
1872	1
1876	1
1879	2
1880	1
1881	1
1884	1
1885	1
1886	2
1888	2
1889	3
1890	2
1892	3
1893	3
1894	3
1895	1
1896	3
1897	4
1898	7
1899	2
1900	6
1901	13
1902	12
1903	10
1904	8
1905	13
1906	13
1907	12
1908	25
1909	18
1910	12
1911	37
1912	52
1913	41
1914	48
1915	81
1916	72
1917	136
1918	130
1919	51
1920	33
1921	55
1922	48
1923	132
1924	286
1925	202
1926	401
1927	191
1928	205
1929	360
1930	521
1931	549
1932	322
1933	208
1934	965
1935	236
1936	322
1937	253
1938	638
1939	415
1940	318
1941	226
1942	318
1943	253
1944	716
1945	300
1946	398
1947	795
1948	403
1949	603
1950	662
1951	427
1952	657
1953	351
1954	656
1955	582
1956	490
1957	447
1958	531
1959	940
1960	651
1961	388
1962	263
1963	470
1964	457
1965	748
1966	626
1967	313
1968	334
1969	636
1970	1,241
1971	475
1972	1,046
1973	871
1974	536
1975	380
1976	477
1977	708
1978	1,155
1979	964
1980	926
1981	1,352
1982	588
1983	1,234
1984	764
1985	554
1986	791
1987	1,025
1988	1,015
1989	973
1990	914
1991	812
1992	1,562
1993	866
1994	773
1995	1,247
1996	1,141
1997	849
1998	1,674
1999	814
2000	1,230
2001	889
2002	990
2003	1,250
2004	694
2005	1,420
2006	1,479
2007	1,145
2008	989
2009	1,306
2010	1,148
2011	1,414
2012	815
2013	526
2014	762
2015	704
2016	645
2017	433
2018	942
2019	755
2020	363
2021	574
2022	866
2023	816
2024	873
2025	881
2026	874

Download the Data

Data for records on 1918-07-21: 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	69
5 to 10	18
10 to 15	15
15 to 20	10
20 to 25	3
25 to 30	5
30 to 35	1
35 to 40	1