Weather Records on 17 August 1918

112 weather records were set or tied worldwide on 17 August 1918. Highest significance: Warialda Post Office, AU.

Key Facts for 17 August 1918

On 17 August 1918, 112 weather records were set or tied at long-record stations worldwide.
6 were record highs and 16 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 0 monthly and 112 daily.
Warialda Post Office set a daily record precipitation of 36.3 mm (1.4 in) on 17 August 1918.
Across 162 earlier years (1797 to 2026) the same calendar date averaged 476 records.

Record Map

112 stations

112 station records on 17 August 1918 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 August 1918: highest significance records shown on the map
Station	Country	Type	Value	Significance
Warialda Post Office	Australia	Record daily precipitation	36.3 mm (1.4 in)	47 of 100 (Notable)
Inverell Comparison	Australia	Record daily precipitation	27.9 mm (1.1 in)	37 of 100 (Notable)
Yallaroi	Australia	Record daily precipitation	28.4 mm (1.1 in)	36 of 100 (Notable)
Inglewood Post Office	Australia	Record daily precipitation	25.7 mm (1.0 in)	34 of 100 (Routine)
Leyburn Post Office	Australia	Record daily precipitation	25.9 mm (1.0 in)	33 of 100 (Routine)
Saint John	Canada	Record low minimum temperature	8.3 C (46.9 F)	21 of 100 (Routine)
Bingara (Keera)	Australia	Record daily precipitation	24.1 mm (0.9 in)	20 of 100 (Routine)
Warwick Post Office	Australia	Record daily precipitation	22.9 mm (0.9 in)	20 of 100 (Routine)
Tulloona (Coolanga)	Australia	Record daily precipitation	22.4 mm (0.9 in)	20 of 100 (Routine)
Nordby (Fano)	Denmark	Record daily precipitation	16.2 mm (0.6 in)	20 of 100 (Routine)
Tenterden	Australia	Record daily precipitation	19.1 mm (0.8 in)	20 of 100 (Routine)
Queanbeyan 2	Australia	Record daily precipitation	15.7 mm (0.6 in)	20 of 100 (Routine)
Aberfoyle	Australia	Record daily precipitation	10.2 mm (0.4 in)	20 of 100 (Routine)
Bringelly (Maryland)	Australia	Record daily precipitation	11.2 mm (0.4 in)	20 of 100 (Routine)
Allora Post Office	Australia	Record daily precipitation	15.7 mm (0.6 in)	20 of 100 (Routine)
Ravenswood Post Office	Australia	Record daily precipitation	5.1 mm (0.20 in)	20 of 100 (Routine)
Belconnen (Weetangerra)	Australia	Record daily precipitation	12.2 mm (0.5 in)	20 of 100 (Routine)
Bingara Post Office	Australia	Record daily precipitation	16.0 mm (0.6 in)	19 of 100 (Routine)
Bathurst Gaol	Australia	Record high minimum temperature	6.7 C (44.1 F)	19 of 100 (Routine)
Wollongong Post Office	Australia	Record daily precipitation	16.3 mm (0.6 in)	19 of 100 (Routine)
Bowen Post Office	Australia	Record daily precipitation	4.6 mm (0.18 in)	18 of 100 (Routine)
Nebo	Australia	Record daily precipitation	11.4 mm (0.4 in)	18 of 100 (Routine)
Bundarra Post Office	Australia	Record daily precipitation	20.6 mm (0.8 in)	18 of 100 (Routine)
Casino Airport	Australia	Record daily precipitation	7.1 mm (0.28 in)	18 of 100 (Routine)
Tenterfield (Federation Park)	Australia	Record daily precipitation	10.2 mm (0.4 in)	17 of 100 (Routine)
Ebor (Wongwibinda)	Australia	Record daily precipitation	8.6 mm (0.34 in)	17 of 100 (Routine)
Mount Victoria (Mt Victoria (S	Australia	Record daily precipitation	3.6 mm (0.14 in)	17 of 100 (Routine)
Prospect Reservoir	Australia	Record daily precipitation	8.4 mm (0.33 in)	17 of 100 (Routine)
Helmond	Netherlands	Record daily precipitation	10.8 mm (0.4 in)	17 of 100 (Routine)
Camboon Station	Australia	Record daily precipitation	2.0 mm (0.08 in)	16 of 100 (Routine)
Dalby Post Office	Australia	Record daily precipitation	8.1 mm (0.32 in)	16 of 100 (Routine)
Nekarboo	Australia	Record daily precipitation	8.1 mm (0.32 in)	16 of 100 (Routine)
Bungendore (Douglas)	Australia	Record daily precipitation	13.7 mm (0.5 in)	16 of 100 (Routine)
Burdekin Shire Council	Australia	Record daily precipitation	2.3 mm (0.09 in)	15 of 100 (Routine)
Walgett (Dungalear)	Australia	Record daily precipitation	6.6 mm (0.26 in)	15 of 100 (Routine)
Pallal	Australia	Record daily precipitation	11.7 mm (0.5 in)	15 of 100 (Routine)
Emu Plains	Australia	Record daily precipitation	8.9 mm (0.35 in)	15 of 100 (Routine)
Pitt Town (the Manse)	Australia	Record daily precipitation	6.6 mm (0.26 in)	15 of 100 (Routine)
Montreal McGill	Canada	Record low minimum temperature	8.3 C (46.9 F)	15 of 100 (Routine)
Karesuando	Sweden	Record low minimum temperature	-3.5 C (25.7 F)	15 of 100 (Routine)
Pittsworth	Australia	Record daily precipitation	11.2 mm (0.4 in)	14 of 100 (Routine)
Stanthorpe Leslie Parade	Australia	Record daily precipitation	14.7 mm (0.6 in)	14 of 100 (Routine)
Roma Post Office	Australia	Record daily precipitation	4.1 mm (0.16 in)	14 of 100 (Routine)
Yetman (Warialda Street)	Australia	Record daily precipitation	6.9 mm (0.27 in)	14 of 100 (Routine)
Wollun	Australia	Record daily precipitation	10.2 mm (0.4 in)	14 of 100 (Routine)
Eversleigh	Australia	Record daily precipitation	11.4 mm (0.4 in)	14 of 100 (Routine)
Ebor (Kotupna)	Australia	Record daily precipitation	7.9 mm (0.31 in)	14 of 100 (Routine)
Burlington	United States	Record low maximum temperature	16.1 C (61.0 F)	14 of 100 (Routine)
St Lawrence Post Office	Australia	Record daily precipitation	4.8 mm (0.19 in)	13 of 100 (Routine)
Nerang Gilston Rd	Australia	Record daily precipitation	19.8 mm (0.8 in)	13 of 100 (Routine)
White Cliffs (Tarella)	Australia	Record daily precipitation	6.1 mm (0.24 in)	13 of 100 (Routine)
Somerton (Bective Estate)	Australia	Record daily precipitation	9.1 mm (0.36 in)	13 of 100 (Routine)
Hillview	Canada	Record daily precipitation	15.2 mm (0.6 in)	13 of 100 (Routine)
Waverley (Belltrees 2)	Australia	Record daily precipitation	6.9 mm (0.27 in)	12 of 100 (Routine)
Jamberoo (Lorna)	Australia	Record daily precipitation	11.7 mm (0.5 in)	12 of 100 (Routine)
Picton Council Depot	Australia	Record daily precipitation	9.4 mm (0.37 in)	12 of 100 (Routine)
Bungendore (Gidleigh)	Australia	Record daily precipitation	11.7 mm (0.5 in)	12 of 100 (Routine)
Renfrew	Canada	Record low maximum temperature	18.3 C (64.9 F)	12 of 100 (Routine)
Varberg	Sweden	Record daily precipitation	11.5 mm (0.5 in)	12 of 100 (Routine)
Winnemucca AP	United States	Record daily precipitation	2.5 mm (0.10 in)	12 of 100 (Routine)

Counts by Type and Timescale

112 records

Records set or tied on 17 August 1918 by type: Highest daily maximum 1, Lowest daily maximum 9, Highest daily minimum 5, Lowest daily minimum 7, Heaviest daily rainfall 90.

Records on 17 August 1918 by type
Record type	Records
Highest daily maximum	1
Lowest daily maximum	9
Highest daily minimum	5
Lowest daily minimum	7
Heaviest daily rainfall	90
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 17 August 1918 by timescale: all-time 0, monthly 0, daily 112.

How Much Records Were Beaten By

99 broken records

Margins by which the 99 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 33.0. Ties are not counted.

Top 20 by Significance

17 August 1918

Top 20 records on 17 August 1918 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 August 1918	Warialda Post Office, AU	daily rain	36.3 mm (1.4 in)	33.0 mm (1.3 in)	24 years	47 of 100 (Notable)
17 August 1918	Inverell Comparison, AU	daily rain	27.9 mm (1.1 in)	25.1 mm (1.0 in)	24 years	37 of 100 (Notable)
17 August 1918	Yallaroi, AU	daily rain	28.4 mm (1.1 in)	24.3 mm (1.0 in)	24 years	36 of 100 (Notable)
17 August 1918	Inglewood Post Office, AU	daily rain	25.7 mm (1.0 in)	24.9 mm (1.0 in)	16 years	34 of 100 (Routine)
17 August 1918	Leyburn Post Office, AU	daily rain	25.9 mm (1.0 in)	21.8 mm (0.9 in)	21 years	33 of 100 (Routine)
17 August 1918	Saint John, CA	daily low min	8.3 C (46.9 F)	1.1 C (2.0 F)	38 years	21 of 100 (Routine)
17 August 1918	Bingara (Keera), AU	daily rain	24.1 mm (0.9 in)	20.8 mm (0.8 in)	24 years	20 of 100 (Routine)
17 August 1918	Warwick Post Office, AU	daily rain	22.9 mm (0.9 in)	16.5 mm (0.6 in)	16 years	20 of 100 (Routine)
17 August 1918	Tulloona (Coolanga), AU	daily rain	22.4 mm (0.9 in)	20.9 mm (0.8 in)	4 years	20 of 100 (Routine)
17 August 1918	Nordby (Fano), DK	daily rain	16.2 mm (0.6 in)	6.5 mm (0.26 in)	43 years	20 of 100 (Routine)
17 August 1918	Tenterden, AU	daily rain	19.1 mm (0.8 in)	14.5 mm (0.6 in)	24 years	20 of 100 (Routine)
17 August 1918	Queanbeyan 2, AU	daily rain	15.7 mm (0.6 in)	10.1 mm (0.4 in)	17 years	20 of 100 (Routine)
17 August 1918	Aberfoyle, AU	daily rain	10.2 mm (0.4 in)	10.2 mm (0.4 in)	31 years	20 of 100 (Routine)
17 August 1918	Bringelly (Maryland), AU	daily rain	11.2 mm (0.4 in)	8.7 mm (0.34 in)	35 years	20 of 100 (Routine)
17 August 1918	Allora Post Office, AU	daily rain	15.7 mm (0.6 in)	11.9 mm (0.5 in)	16 years	20 of 100 (Routine)
17 August 1918	Ravenswood Post Office, AU	daily rain	5.1 mm (0.20 in)	5.1 mm (0.20 in)	46 years	20 of 100 (Routine)
17 August 1918	Belconnen (Weetangerra), AU	daily rain	12.2 mm (0.5 in)	7.4 mm (0.29 in)	20 years	20 of 100 (Routine)
17 August 1918	Bingara Post Office, AU	daily rain	16.0 mm (0.6 in)	10.2 mm (0.4 in)	21 years	19 of 100 (Routine)
17 August 1918	Bathurst Gaol, AU	daily high min	6.7 C (44.1 F)	0.7 C (1.3 F)	36 years	19 of 100 (Routine)
17 August 1918	Wollongong Post Office, AU	daily rain	16.3 mm (0.6 in)	3.9 mm (0.15 in)	45 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

1797 to 1918

Records set or tied on this calendar date in each year from 1797 to 1918. 1918 had 112 records.

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

Records on 08-17 in each year
Year	Records
1797	2
1802	2
1820	2
1837	1
1838	2
1841	2
1842	1
1845	2
1853	1
1854	1
1856	1
1857	1
1861	3
1862	1
1867	1
1868	3
1869	1
1872	1
1875	2
1876	5
1879	1
1881	1
1882	1
1883	2
1885	3
1886	1
1888	5
1891	1
1892	3
1893	2
1894	3
1895	2
1896	3
1897	1
1898	5
1899	8
1900	3
1901	14
1902	7
1903	6
1904	2
1905	11
1906	28
1907	9
1908	26
1909	24
1910	17
1911	18
1912	31
1913	79
1914	41
1915	28
1916	33
1917	35
1918	112
1919	37
1920	110
1921	37
1922	169
1923	161
1924	171
1925	130
1926	182
1927	228
1928	131
1929	243
1930	138
1931	302
1932	360
1933	260
1934	377
1935	437
1936	670
1937	726
1938	466
1939	364
1940	341
1941	378
1942	461
1943	743
1944	531
1945	387
1946	433
1947	682
1948	475
1949	371
1950	522
1951	413
1952	470
1953	345
1954	685
1955	465
1956	407
1957	504
1958	519
1959	543
1960	533
1961	998
1962	445
1963	650
1964	410
1965	641
1966	496
1967	679
1968	953
1969	593
1970	467
1971	447
1972	1,044
1973	750
1974	582
1975	612
1976	797
1977	1,216
1978	814
1979	1,464
1980	895
1981	1,112
1982	554
1983	1,574
1984	726
1985	948
1986	916
1987	1,150
1988	1,608
1989	687
1990	949
1991	560
1992	1,813
1993	803
1994	1,038
1995	1,724
1996	752
1997	1,544
1998	1,003
1999	697
2000	994
2001	1,101
2002	1,266
2003	948
2004	1,046
2005	722
2006	814
2007	1,646
2008	1,301
2009	922
2010	1,105
2011	956
2012	1,215
2013	802
2014	997
2015	890
2016	748
2017	544
2018	518
2019	467
2020	1,529
2021	800
2022	1,428
2023	1,032
2024	740
2025	538
2026	535

Download the Data

Data for records on 1918-08-17: 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 5	64
5 to 10	21
10 to 15	6
15 to 20	1
20 to 25	5
25 to 30	1
30 to 35	1