Weather Records on 30 August 1917

50 weather records were set or tied worldwide on 30 August 1917. Highest significance: Bridgewater, AU.

Key Facts for 30 August 1917

On 30 August 1917, 50 weather records were set or tied at long-record stations worldwide.
13 were record highs and 2 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 0 monthly and 50 daily.
Bridgewater set a daily record precipitation of 51.3 mm (2.0 in) on 30 August 1917.
Across 169 earlier years (1806 to 2026) the same calendar date averaged 425 records.

Record Map

50 stations

50 station records on 30 August 1917 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 August 1917: highest significance records shown on the map
Station	Country	Type	Value	Significance
Bridgewater	Australia	Record daily precipitation	51.3 mm (2.0 in)	35 of 100 (Notable)
Blue Hill Coop	United States	Record daily precipitation	49.0 mm (1.9 in)	33 of 100 (Routine)
Hingham (1)	United States	Record daily precipitation	40.1 mm (1.6 in)	33 of 100 (Routine)
Lobethal	Australia	Record daily precipitation	37.8 mm (1.5 in)	27 of 100 (Routine)
Concord	United States	Record daily precipitation	38.9 mm (1.5 in)	26 of 100 (Routine)
Hahndorf	Australia	Record daily precipitation	34.5 mm (1.4 in)	21 of 100 (Routine)
Maly Uzen'	Russia	Record daily precipitation	20.1 mm (0.8 in)	20 of 100 (Routine)
Apsley	Australia	Record daily precipitation	17.8 mm (0.7 in)	20 of 100 (Routine)
Karesuando	Sweden	Record high minimum temperature	11.5 C (52.7 F)	19 of 100 (Routine)
Clarendon	Australia	Record daily precipitation	27.7 mm (1.1 in)	18 of 100 (Routine)
Gumeracha	Australia	Record daily precipitation	28.7 mm (1.1 in)	18 of 100 (Routine)
Mount Torrens	Australia	Record daily precipitation	24.1 mm (0.9 in)	18 of 100 (Routine)
Mandamar	Australia	Record daily precipitation	19.6 mm (0.8 in)	18 of 100 (Routine)
Haparanda	Sweden	Record high minimum temperature	14.5 C (58.1 F)	18 of 100 (Routine)
Dingo Vale	Australia	Record daily precipitation	31.2 mm (1.2 in)	17 of 100 (Routine)
Meadows	Australia	Record daily precipitation	22.4 mm (0.9 in)	16 of 100 (Routine)
Mount Barker	Australia	Record daily precipitation	23.9 mm (0.9 in)	16 of 100 (Routine)
Battunga	Australia	Record daily precipitation	23.4 mm (0.9 in)	16 of 100 (Routine)
Lake Cochituate	United States	Record daily precipitation	49.5 mm (1.9 in)	16 of 100 (Routine)
Jamieson	Australia	Record daily precipitation	31.8 mm (1.3 in)	14 of 100 (Routine)
Newlyn Reservoir	Australia	Record daily precipitation	27.4 mm (1.1 in)	14 of 100 (Routine)
Vasilevici	Belarus	Record daily precipitation	12.9 mm (0.5 in)	14 of 100 (Routine)
Umea	Sweden	Record high minimum temperature	13.5 C (56.3 F)	13 of 100 (Routine)
Bungendore (Gidleigh)	Australia	Record daily precipitation	16.8 mm (0.7 in)	12 of 100 (Routine)
Minnedosa	Canada	Record high minimum temperature	11.7 C (53.1 F)	12 of 100 (Routine)
Atyrau	Kazakhstan	Record daily precipitation	16.3 mm (0.6 in)	12 of 100 (Routine)
Karlshamn	Sweden	Record high minimum temperature	14.5 C (58.1 F)	12 of 100 (Routine)
Jokkmokk	Sweden	Record high minimum temperature	10.5 C (50.9 F)	12 of 100 (Routine)
Camden 1	United States	Record daily precipitation	22.4 mm (0.9 in)	12 of 100 (Routine)
Southport Ridgeway Ave	Australia	Record daily precipitation	13.2 mm (0.5 in)	11 of 100 (Routine)
Walgett Council Depot	Australia	Record high minimum temperature	15.0 C (59.0 F)	11 of 100 (Routine)
Somerton (Bective Estate)	Australia	Record daily precipitation	13.0 mm (0.5 in)	11 of 100 (Routine)
Blue Hill Coop	United States	Record high minimum temperature	17.8 C (64.0 F)	11 of 100 (Routine)
Adelaide West Terrace	Australia	Record low maximum temperature	12.2 C (54.0 F)	10 of 100 (Routine)
Birdwood	Australia	Record daily precipitation	21.3 mm (0.8 in)	10 of 100 (Routine)
Mount Pleasant	Australia	Record daily precipitation	23.1 mm (0.9 in)	9 of 100 (Routine)
St. Petersburg	Russia	Record high minimum temperature	14.6 C (58.3 F)	9 of 100 (Routine)
Belaringar Station	Australia	Record daily precipitation	15.2 mm (0.6 in)	8 of 100 (Routine)
Mittagong (Beatrice Street)	Australia	Record daily precipitation	7.6 mm (0.30 in)	8 of 100 (Routine)
Dromana	Australia	Record daily precipitation	11.9 mm (0.5 in)	8 of 100 (Routine)
Leominster	United States	Record daily precipitation	22.1 mm (0.9 in)	8 of 100 (Routine)
Point Escuminac	Canada	Record daily precipitation	16.0 mm (0.6 in)	6 of 100 (Routine)
Astrakan	Russia	Record daily precipitation	5.6 mm (0.22 in)	3 of 100 (Routine)
Atlantic City Marina	United States	Record high minimum temperature	22.2 C (72.0 F)	3 of 100 (Routine)
Euroa	Australia	Record daily precipitation	20.3 mm (0.8 in)	2 of 100 (Routine)
Sydney	Canada	Record high minimum temperature	16.7 C (62.1 F)	2 of 100 (Routine)
Wrixum/Fohr	Germany	Record daily precipitation	11.3 mm (0.4 in)	2 of 100 (Routine)
Pitea	Sweden	Record high minimum temperature	13.0 C (55.4 F)	2 of 100 (Routine)
Greenville Dwtn AP	United States	Record high maximum temperature	34.4 C (93.9 F)	2 of 100 (Routine)
Port Arthur	Canada	Record low minimum temperature	2.2 C (36.0 F)	1 of 100 (Routine)

Counts by Type and Timescale

50 records

Records set or tied on 30 August 1917 by type: Highest daily maximum 1, Lowest daily maximum 1, Highest daily minimum 12, Lowest daily minimum 1, Heaviest daily rainfall 35.

Records on 30 August 1917 by type
Record type	Records
Highest daily maximum	1
Lowest daily maximum	1
Highest daily minimum	12
Lowest daily minimum	1
Heaviest daily rainfall	35
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 30 August 1917 by timescale: all-time 0, monthly 0, daily 50.

How Much Records Were Beaten By

43 broken records

Margins by which the 43 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 32.2. Ties are not counted.

Top 20 by Significance

30 August 1917

Top 20 records on 30 August 1917 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 August 1917	Bridgewater, AU	daily rain	51.3 mm (2.0 in)	28.4 mm (1.1 in)	19 years	35 of 100 (Notable)
30 August 1917	Blue Hill Coop, US	daily rain	49.0 mm (1.9 in)	32.2 mm (1.3 in)	14 years	33 of 100 (Routine)
30 August 1917	Hingham (1), US	daily rain	40.1 mm (1.6 in)	28.7 mm (1.1 in)	30 years	33 of 100 (Routine)
30 August 1917	Lobethal, AU	daily rain	37.8 mm (1.5 in)	14.4 mm (0.6 in)	23 years	27 of 100 (Routine)
30 August 1917	Concord, US	daily rain	38.9 mm (1.5 in)	16.0 mm (0.6 in)	26 years	26 of 100 (Routine)
30 August 1917	Hahndorf, AU	daily rain	34.5 mm (1.4 in)	12.9 mm (0.5 in)	12 years	21 of 100 (Routine)
30 August 1917	Maly Uzen', RU	daily rain	20.1 mm (0.8 in)	10.9 mm (0.4 in)	31 years	20 of 100 (Routine)
30 August 1917	Apsley, AU	daily rain	17.8 mm (0.7 in)	5.4 mm (0.21 in)	28 years	20 of 100 (Routine)
30 August 1917	Karesuando, SE	daily high min	11.5 C (52.7 F)	3.0 C (5.4 F)	29 years	19 of 100 (Routine)
30 August 1917	Clarendon, AU	daily rain	27.7 mm (1.1 in)	6.1 mm (0.24 in)	23 years	18 of 100 (Routine)
30 August 1917	Gumeracha, AU	daily rain	28.7 mm (1.1 in)	5.3 mm (0.21 in)	23 years	18 of 100 (Routine)
30 August 1917	Mount Torrens, AU	daily rain	24.1 mm (0.9 in)	7.1 mm (0.28 in)	16 years	18 of 100 (Routine)
30 August 1917	Mandamar, AU	daily rain	19.6 mm (0.8 in)	6.1 mm (0.24 in)	15 years	18 of 100 (Routine)
30 August 1917	Haparanda, SE	daily high min	14.5 C (58.1 F)	2.5 C (4.5 F)	29 years	18 of 100 (Routine)
30 August 1917	Dingo Vale, AU	daily rain	31.2 mm (1.2 in)	6.6 mm (0.26 in)	23 years	17 of 100 (Routine)
30 August 1917	Meadows, AU	daily rain	22.4 mm (0.9 in)	4.4 mm (0.17 in)	23 years	16 of 100 (Routine)
30 August 1917	Mount Barker, AU	daily rain	23.9 mm (0.9 in)	6.1 mm (0.24 in)	15 years	16 of 100 (Routine)
30 August 1917	Battunga, AU	daily rain	23.4 mm (0.9 in)	5.6 mm (0.22 in)	19 years	16 of 100 (Routine)
30 August 1917	Lake Cochituate, US	daily rain	49.5 mm (1.9 in)	18.0 mm (0.7 in)	6 years	16 of 100 (Routine)
30 August 1917	Jamieson, AU	daily rain	31.8 mm (1.3 in)	6.4 mm (0.25 in)	19 years	14 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

1806 to 1917

Records set or tied on this calendar date in each year from 1806 to 1917. 1917 had 50 records.

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

Records on 08-30 in each year
Year	Records
1806	1
1807	4
1813	1
1814	2
1827	1
1829	1
1835	1
1838	1
1839	1
1845	4
1850	1
1851	2
1855	1
1857	1
1859	1
1864	2
1867	1
1869	1
1870	2
1874	1
1875	2
1876	1
1877	2
1878	1
1880	4
1881	2
1882	1
1884	1
1885	5
1886	7
1887	1
1888	1
1889	2
1890	5
1891	1
1892	3
1893	3
1894	2
1895	1
1896	1
1897	3
1898	3
1899	2
1900	6
1901	8
1902	12
1903	19
1904	13
1905	23
1906	29
1907	8
1908	10
1909	37
1910	15
1911	41
1912	60
1913	22
1914	23
1915	47
1916	17
1917	50
1918	45
1919	17
1920	78
1921	100
1922	65
1923	61
1924	283
1925	167
1926	173
1927	109
1928	327
1929	208
1930	245
1931	192
1932	1,102
1933	274
1934	519
1935	476
1936	191
1937	418
1938	233
1939	401
1940	346
1941	422
1942	385
1943	487
1944	491
1945	455
1946	545
1947	599
1948	519
1949	240
1950	481
1951	1,091
1952	316
1953	1,124
1954	516
1955	417
1956	479
1957	321
1958	363
1959	546
1960	356
1961	573
1962	387
1963	442
1964	422
1965	1,118
1966	500
1967	536
1968	729
1969	522
1970	423
1971	443
1972	579
1973	646
1974	838
1975	664
1976	679
1977	665
1978	825
1979	517
1980	572
1981	684
1982	770
1983	696
1984	1,127
1985	629
1986	1,768
1987	638
1988	881
1989	791
1990	983
1991	938
1992	1,697
1993	1,200
1994	601
1995	940
1996	1,385
1997	960
1998	1,278
1999	864
2000	1,189
2001	750
2002	801
2003	1,226
2004	1,087
2005	1,500
2006	989
2007	1,300
2008	678
2009	1,251
2010	1,552
2011	994
2012	1,087
2013	644
2014	558
2015	1,074
2016	552
2017	924
2018	616
2019	755
2020	671
2021	429
2022	1,077
2023	651
2024	912
2025	324
2026	733

Download the Data

Data for records on 1917-08-30: 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	24
5 to 10	11
10 to 15	3
15 to 20	2
20 to 25	0
25 to 30	2
30 to 35	1