Weather Records on 12 August 1917

134 weather records were set or tied worldwide on 12 August 1917. Highest significance: Gobarralong, AU.

Key Facts for 12 August 1917

On 12 August 1917, 134 weather records were set or tied at long-record stations worldwide.
7 were record highs and 5 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 3 monthly and 131 daily.
Gobarralong set a daily record precipitation of 25.9 mm (1.0 in) on 12 August 1917.
Across 166 earlier years (1793 to 2026) the same calendar date averaged 449 records.

Record Map

134 stations

134 station records on 12 August 1917 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 12 August 1917: highest significance records shown on the map
Station	Country	Type	Value	Significance
Gobarralong	Australia	Record daily precipitation	25.9 mm (1.0 in)	46 of 100 (Notable)
Colesberg (Tnk)	South Africa	Record daily precipitation	34.8 mm (1.4 in)	46 of 100 (Notable)
Adelong Post Office	Australia	Record daily precipitation	32.3 mm (1.3 in)	43 of 100 (Notable)
Carcoar	Australia	Record daily precipitation	41.9 mm (1.6 in)	38 of 100 (Notable)
Narra Allen	Australia	Record daily precipitation	31.8 mm (1.3 in)	37 of 100 (Notable)
Eugowra Post Office	Australia	Record daily precipitation	30.5 mm (1.2 in)	34 of 100 (Routine)
Wellwood	Australia	Record daily precipitation	33.5 mm (1.3 in)	33 of 100 (Routine)
Tumut (Wattle Cres)	Australia	Record daily precipitation	33.0 mm (1.3 in)	33 of 100 (Routine)
Sterling	South Africa	Record daily precipitation	28.4 mm (1.1 in)	32 of 100 (Routine)
Philipstown (Tnk)	South Africa	Record daily precipitation	29.5 mm (1.2 in)	32 of 100 (Routine)
Cavan	Australia	Record daily precipitation	28.7 mm (1.1 in)	31 of 100 (Routine)
Yellowin	Australia	Record daily precipitation	37.3 mm (1.5 in)	30 of 100 (Routine)
Charlottetown	Canada	Record daily precipitation	32.5 mm (1.3 in)	29 of 100 (Routine)
Hill End Post Office	Australia	Record daily precipitation	31.0 mm (1.2 in)	28 of 100 (Routine)
Cudgewa North	Australia	Record daily precipitation	38.1 mm (1.5 in)	28 of 100 (Routine)
Warrangong	Australia	Record daily precipitation	27.7 mm (1.1 in)	27 of 100 (Routine)
Orange Post Office	Australia	Record daily precipitation	36.3 mm (1.4 in)	24 of 100 (Routine)
Molong (King St)	Australia	Record daily precipitation	29.2 mm (1.1 in)	24 of 100 (Routine)
Harden (East St)	Australia	Record daily precipitation	47.5 mm (1.9 in)	24 of 100 (Routine)
Saint John	Canada	Record high minimum temperature	16.7 C (62.1 F)	24 of 100 (Routine)
Bathurst Gaol	Australia	Record daily precipitation	21.6 mm (0.9 in)	20 of 100 (Routine)
Yan Yean	Australia	Record daily precipitation	19.8 mm (0.8 in)	20 of 100 (Routine)
Murrumburrah Old Post Office	Australia	Record daily precipitation	22.1 mm (0.9 in)	20 of 100 (Routine)
Ooma	Australia	Record daily precipitation	23.6 mm (0.9 in)	20 of 100 (Routine)
Cowra Post Office	Australia	Record daily precipitation	24.1 mm (0.9 in)	20 of 100 (Routine)
Mundarlo (Yabtree)	Australia	Record daily precipitation	23.1 mm (0.9 in)	20 of 100 (Routine)
Oranjerivier (Sar)	South Africa	Record daily precipitation	20.8 mm (0.8 in)	20 of 100 (Routine)
Barkly West (Tnk)	South Africa	Record daily precipitation	11.4 mm (0.4 in)	20 of 100 (Routine)
Newlands	South Africa	Record daily precipitation	10.7 mm (0.4 in)	20 of 100 (Routine)
Hatfield (Clare)	Australia	Record daily precipitation	19.3 mm (0.8 in)	20 of 100 (Routine)
Forbes (Camp Street)	Australia	Record daily precipitation	21.1 mm (0.8 in)	20 of 100 (Routine)
Hillston Airport	Australia	Record daily precipitation	16.5 mm (0.6 in)	20 of 100 (Routine)
Marrar (Centenary Drive)	Australia	Record daily precipitation	18.3 mm (0.7 in)	20 of 100 (Routine)
Pella	South Africa	Record daily precipitation	22.1 mm (0.9 in)	20 of 100 (Routine)
Nymagee (Pyramid)	Australia	Record daily precipitation	14.2 mm (0.6 in)	20 of 100 (Routine)
Eremeran	Australia	Record daily precipitation	12.7 mm (0.5 in)	20 of 100 (Routine)
Yalgogrin South	Australia	Record daily precipitation	15.2 mm (0.6 in)	20 of 100 (Routine)
Griquatown (Tnk)	South Africa	Record daily precipitation	17.8 mm (0.7 in)	20 of 100 (Routine)
Berthong	Australia	Record daily precipitation	24.1 mm (0.9 in)	20 of 100 (Routine)
Lake Cowal	Australia	Record daily precipitation	14.5 mm (0.6 in)	20 of 100 (Routine)
Grenfell (Quondong Rd)	Australia	Record daily precipitation	24.6 mm (1.0 in)	20 of 100 (Routine)
Niznij Novgorod	Russia	Record daily precipitation	18.6 mm (0.7 in)	20 of 100 (Routine)
Winbar	Australia	Record daily precipitation	8.9 mm (0.35 in)	20 of 100 (Routine)
Dubbo (Wilbertree)	Australia	Record daily precipitation	23.9 mm (0.9 in)	20 of 100 (Routine)
Tarcutta	Australia	Record daily precipitation	22.4 mm (0.9 in)	20 of 100 (Routine)
Temora Ambulance Station	Australia	Record daily precipitation	20.6 mm (0.8 in)	20 of 100 (Routine)
Bygoo	Australia	Record daily precipitation	14.0 mm (0.6 in)	20 of 100 (Routine)
Lake Cargelligo Airport	Australia	Record daily precipitation	15.7 mm (0.6 in)	20 of 100 (Routine)
Wagga Wagga (Kooringal)	Australia	Record daily precipitation	18.3 mm (0.7 in)	20 of 100 (Routine)
Douglas	South Africa	Record daily precipitation	10.9 mm (0.4 in)	20 of 100 (Routine)
Port Clinton (Yararoo)	Australia	Record daily precipitation	8.4 mm (0.33 in)	20 of 100 (Routine)
M.R.A.	Australia	Record daily precipitation	11.7 mm (0.5 in)	20 of 100 (Routine)
Athol 1	Australia	Record daily precipitation	22.9 mm (0.9 in)	20 of 100 (Routine)
Talmalmo	Australia	Record daily precipitation	24.9 mm (1.0 in)	20 of 100 (Routine)
Koffiefontein (Pol)	South Africa	Record daily precipitation	20.6 mm (0.8 in)	20 of 100 (Routine)
Innamincka Police Camp	Australia	Record daily precipitation	5.1 mm (0.20 in)	19 of 100 (Routine)
Burrawang South Station	Australia	Record daily precipitation	18.3 mm (0.7 in)	19 of 100 (Routine)
Whroo	Australia	Record daily precipitation	10.9 mm (0.4 in)	19 of 100 (Routine)
Tylden "Tulden"	South Africa	Record daily precipitation	7.1 mm (0.28 in)	19 of 100 (Routine)
Ellesmere	South Africa	Record daily precipitation	20.1 mm (0.8 in)	19 of 100 (Routine)

Counts by Type and Timescale

134 records

Records set or tied on 12 August 1917 by type: Highest daily maximum 2, Lowest daily maximum 5, Highest daily minimum 5, Heaviest daily rainfall 122.

Records on 12 August 1917 by type
Record type	Records
Highest daily maximum	2
Lowest daily maximum	5
Highest daily minimum	5
Lowest daily minimum	0
Heaviest daily rainfall	122
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 12 August 1917 by timescale: all-time 0, monthly 3, daily 131.

How Much Records Were Beaten By

126 broken records

Margins by which the 126 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 29.7. Ties are not counted.

Top 20 by Significance

12 August 1917

Top 20 records on 12 August 1917 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
12 August 1917	Gobarralong, AU	daily rain	25.9 mm (1.0 in)	18.0 mm (0.7 in)	27 years	46 of 100 (Notable)
12 August 1917	Colesberg (Tnk), ZA	daily rain	34.8 mm (1.4 in)	29.7 mm (1.2 in)	8 years	46 of 100 (Notable)
12 August 1917	Adelong Post Office, AU	daily rain	32.3 mm (1.3 in)	20.6 mm (0.8 in)	33 years	43 of 100 (Notable)
12 August 1917	Carcoar, AU	daily rain	41.9 mm (1.6 in)	19.8 mm (0.8 in)	30 years	38 of 100 (Notable)
12 August 1917	Narra Allen, AU	daily rain	31.8 mm (1.3 in)	23.7 mm (0.9 in)	8 years	37 of 100 (Notable)
12 August 1917	Eugowra Post Office, AU	daily rain	30.5 mm (1.2 in)	20.8 mm (0.8 in)	8 years	34 of 100 (Routine)
12 August 1917	Wellwood, AU	daily rain	33.5 mm (1.3 in)	18.3 mm (0.7 in)	30 years	33 of 100 (Routine)
12 August 1917	Tumut (Wattle Cres), AU	daily rain	33.0 mm (1.3 in)	16.7 mm (0.7 in)	27 years	33 of 100 (Routine)
12 August 1917	Sterling, ZA	monthly rain	28.4 mm (1.1 in)	4.8 mm (0.19 in)	33 years	32 of 100 (Routine)
12 August 1917	Philipstown (Tnk), ZA	monthly rain	29.5 mm (1.2 in)	5.4 mm (0.21 in)	33 years	32 of 100 (Routine)
12 August 1917	Cavan, AU	daily rain	28.7 mm (1.1 in)	15.2 mm (0.6 in)	17 years	31 of 100 (Routine)
12 August 1917	Yellowin, AU	daily rain	37.3 mm (1.5 in)	17.5 mm (0.7 in)	27 years	30 of 100 (Routine)
12 August 1917	Charlottetown, CA	daily rain	32.5 mm (1.3 in)	18.8 mm (0.7 in)	24 years	29 of 100 (Routine)
12 August 1917	Hill End Post Office, AU	daily rain	31.0 mm (1.2 in)	15.0 mm (0.6 in)	30 years	28 of 100 (Routine)
12 August 1917	Cudgewa North, AU	daily rain	38.1 mm (1.5 in)	17.0 mm (0.7 in)	8 years	28 of 100 (Routine)
12 August 1917	Warrangong, AU	daily rain	27.7 mm (1.1 in)	19.8 mm (0.8 in)	2 years	27 of 100 (Routine)
12 August 1917	Orange Post Office, AU	daily rain	36.3 mm (1.4 in)	10.1 mm (0.4 in)	33 years	24 of 100 (Routine)
12 August 1917	Molong (King St), AU	daily rain	29.2 mm (1.1 in)	16.5 mm (0.6 in)	8 years	24 of 100 (Routine)
12 August 1917	Harden (East St), AU	monthly rain	47.5 mm (1.9 in)	2.3 mm (0.09 in)	29 years	24 of 100 (Routine)
12 August 1917	Saint John, CA	daily high min	16.7 C (62.1 F)	1.7 C (3.1 F)	38 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

1793 to 1917

Records set or tied on this calendar date in each year from 1793 to 1917. 1917 had 134 records.

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

Records on 08-12 in each year
Year	Records
1793	1
1796	1
1811	2
1814	1
1815	1
1825	1
1843	1
1851	1
1854	1
1855	2
1856	1
1861	1
1864	3
1865	1
1867	1
1868	1
1871	2
1872	1
1873	1
1874	2
1875	3
1876	2
1879	1
1881	2
1883	1
1884	1
1885	1
1887	2
1888	2
1889	4
1890	4
1891	4
1892	2
1893	1
1894	1
1895	6
1896	2
1897	4
1898	1
1899	10
1900	1
1901	5
1902	9
1903	14
1904	13
1905	16
1906	8
1907	8
1908	31
1909	42
1910	16
1911	33
1912	40
1913	39
1914	26
1915	46
1916	31
1917	134
1918	37
1919	42
1920	26
1921	174
1922	71
1923	89
1924	267
1925	150
1926	154
1927	145
1928	173
1929	276
1930	501
1931	708
1932	418
1933	271
1934	471
1935	408
1936	591
1937	356
1938	237
1939	282
1940	545
1941	481
1942	257
1943	523
1944	595
1945	295
1946	655
1947	729
1948	384
1949	469
1950	442
1951	357
1952	533
1953	227
1954	969
1955	590
1956	265
1957	384
1958	406
1959	388
1960	707
1961	381
1962	466
1963	559
1964	1,346
1965	977
1966	777
1967	1,135
1968	444
1969	629
1970	422
1971	486
1972	473
1973	442
1974	560
1975	593
1976	495
1977	747
1978	571
1979	1,192
1980	692
1981	665
1982	789
1983	923
1984	665
1985	935
1986	615
1987	935
1988	1,518
1989	827
1990	727
1991	726
1992	1,134
1993	936
1994	861
1995	1,654
1996	1,336
1997	1,363
1998	1,215
1999	1,325
2000	741
2001	855
2002	1,345
2003	1,752
2004	1,872
2005	1,085
2006	874
2007	1,209
2008	970
2009	814
2010	1,907
2011	903
2012	910
2013	427
2014	787
2015	757
2016	1,290
2017	533
2018	571
2019	695
2020	730
2021	980
2022	616
2023	779
2024	659
2025	639
2026	849

Download the Data

Data for records on 1917-08-12: 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).

Histogram of margins by which records were beaten on 12 August 1917
Margin	Records
0 to 5	52
5 to 10	37
10 to 15	17
15 to 20	15
20 to 25	4
25 to 30	1