Weather Records on 2 August 1917

115 weather records were set or tied worldwide on 2 August 1917. Highest significance: Groningen-1, NL.

Key Facts for 2 August 1917

On 2 August 1917, 115 weather records were set or tied at long-record stations worldwide.
55 were record highs and 3 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 6 monthly and 108 daily.
Groningen-1 set a daily record precipitation of 40.1 mm (1.6 in) on 2 August 1917.
Across 163 earlier years (1812 to 2026) the same calendar date averaged 440 records.

Record Map

115 stations

115 station records on 2 August 1917 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 2 August 1917: highest significance records shown on the map
Station	Country	Type	Value	Significance
Groningen-1	Netherlands	Record daily precipitation	40.1 mm (1.6 in)	56 of 100 (Notable)
West Terschelling	Netherlands	Record daily precipitation	69.8 mm (2.7 in)	55 of 100 (Notable)
Kadina	Australia	Record daily precipitation	39.4 mm (1.6 in)	44 of 100 (Notable)
Wangerooge	Germany	Record daily precipitation	43.0 mm (1.7 in)	43 of 100 (Notable)
Mantova	Italy	Record daily precipitation	54.0 mm (2.1 in)	43 of 100 (Notable)
Wirrabara	Australia	Record daily precipitation	37.3 mm (1.5 in)	40 of 100 (Notable)
Wirrabara Forest	Australia	Record daily precipitation	56.4 mm (2.2 in)	39 of 100 (Notable)
Paskeville	Australia	Record daily precipitation	33.3 mm (1.3 in)	38 of 100 (Notable)
Maseskar	Sweden	Record daily precipitation	56.7 mm (2.2 in)	38 of 100 (Notable)
Chicoutimi	Canada	Record high minimum temperature	23.3 C (73.9 F)	34 of 100 (Routine)
Murray Town (Doughboy Creek)	Australia	Record daily precipitation	33.0 mm (1.3 in)	33 of 100 (Routine)
Wilmington	Australia	Record daily precipitation	39.9 mm (1.6 in)	32 of 100 (Routine)
Mount Remarkable	Australia	Record daily precipitation	31.0 mm (1.2 in)	32 of 100 (Routine)
Melrose	Australia	Record daily precipitation	56.4 mm (2.2 in)	30 of 100 (Routine)
Maitland (Weetulta)	Australia	Record daily precipitation	25.4 mm (1.0 in)	29 of 100 (Routine)
Toronto	Canada	Record high minimum temperature	21.1 C (70.0 F)	28 of 100 (Routine)
Setauket Strong	United States	Record high maximum temperature	33.3 C (91.9 F)	26 of 100 (Routine)
Newark Liberty Intl AP	United States	Record high maximum temperature	36.7 C (98.1 F)	26 of 100 (Routine)
World Trade Ctr	United States	Record high maximum temperature	35.6 C (96.1 F)	25 of 100 (Routine)
Northfield	United States	Record high maximum temperature	33.9 C (93.0 F)	25 of 100 (Routine)
Oksoey Fyr	Norway	Record daily precipitation	27.0 mm (1.1 in)	24 of 100 (Routine)
Baltimore Customs House	United States	Record high maximum temperature	36.7 C (98.1 F)	24 of 100 (Routine)
Concord	United States	Record high minimum temperature	22.2 C (72.0 F)	23 of 100 (Routine)
Baltimore Customs House	United States	Record high minimum temperature	25.6 C (78.1 F)	23 of 100 (Routine)
Philadelphia City	United States	Record high maximum temperature	35.6 C (96.1 F)	23 of 100 (Routine)
Chatham	Canada	Record high maximum temperature	35.6 C (96.1 F)	21 of 100 (Routine)
Concord	United States	Record high maximum temperature	35.6 C (96.1 F)	21 of 100 (Routine)
Maly Uzen'	Russia	Record daily precipitation	20.9 mm (0.8 in)	20 of 100 (Routine)
Coulta	Australia	Record daily precipitation	24.9 mm (1.0 in)	20 of 100 (Routine)
Yardea	Australia	Record daily precipitation	20.3 mm (0.8 in)	20 of 100 (Routine)
Johnburgh Post Office	Australia	Record daily precipitation	17.0 mm (0.7 in)	20 of 100 (Routine)
Den Helder-1	Netherlands	Record daily precipitation	22.5 mm (0.9 in)	20 of 100 (Routine)
Port Wakefield	Australia	Record daily precipitation	14.5 mm (0.6 in)	20 of 100 (Routine)
Elliston	Australia	Record daily precipitation	21.6 mm (0.9 in)	20 of 100 (Routine)
Brinkworth (Anama Park)	Australia	Record daily precipitation	21.8 mm (0.9 in)	20 of 100 (Routine)
Orroroo	Australia	Record daily precipitation	15.0 mm (0.6 in)	20 of 100 (Routine)
Balaklava	Australia	Record daily precipitation	15.0 mm (0.6 in)	20 of 100 (Routine)
Moonta	Australia	Record daily precipitation	21.6 mm (0.9 in)	20 of 100 (Routine)
Carrieton (Pamatta)	Australia	Record daily precipitation	14.5 mm (0.6 in)	20 of 100 (Routine)
Hamilton	Canada	Record high minimum temperature	22.2 C (72.0 F)	20 of 100 (Routine)
Hoofddorp	Netherlands	Record daily precipitation	19.8 mm (0.8 in)	20 of 100 (Routine)
Washington	United States	Record high maximum temperature	35.6 C (96.1 F)	20 of 100 (Routine)
Uccle	Belgium	Record low maximum temperature	16.2 C (61.2 F)	19 of 100 (Routine)
Alton	Canada	Record high minimum temperature	19.4 C (66.9 F)	19 of 100 (Routine)
Peterborough	Canada	Record high minimum temperature	20.6 C (69.1 F)	18 of 100 (Routine)
Hvar	Croatia	Record high maximum temperature	34.0 C (93.2 F)	18 of 100 (Routine)
Blue Hill Coop	United States	Record high maximum temperature	35.0 C (95.0 F)	18 of 100 (Routine)
Blyth	Australia	Record daily precipitation	19.3 mm (0.8 in)	17 of 100 (Routine)
Laura	Australia	Record daily precipitation	19.3 mm (0.8 in)	17 of 100 (Routine)
Hvar	Croatia	Record high minimum temperature	26.8 C (80.2 F)	17 of 100 (Routine)
Jokkmokk	Sweden	Record high minimum temperature	14.5 C (58.1 F)	17 of 100 (Routine)
Cape May 2 NW	United States	Record high maximum temperature	30.6 C (87.1 F)	17 of 100 (Routine)
Sheringa (Lake Hamilton)	Australia	Record daily precipitation	17.8 mm (0.7 in)	16 of 100 (Routine)
Carrieton	Australia	Record daily precipitation	15.0 mm (0.6 in)	16 of 100 (Routine)
Port Germein (Telowie)	Australia	Record daily precipitation	9.9 mm (0.39 in)	16 of 100 (Routine)
Bundaleer Forest Reserve	Australia	Record daily precipitation	20.6 mm (0.8 in)	16 of 100 (Routine)
Woodstock	Canada	Record high minimum temperature	20.0 C (68.0 F)	16 of 100 (Routine)
Nuwara Eliya	Sri Lanka	Record high maximum temperature	22.7 C (72.9 F)	16 of 100 (Routine)
Hoorn	Netherlands	Record daily precipitation	22.4 mm (0.9 in)	16 of 100 (Routine)
Maitland (Woodburlie)	Australia	Record daily precipitation	16.5 mm (0.6 in)	15 of 100 (Routine)

Counts by Type and Timescale

115 records

Records set or tied on 2 August 1917 by type: Highest daily maximum 25, Lowest daily maximum 3, Highest daily minimum 30, Heaviest daily rainfall 57.

Records on 2 August 1917 by type
Record type	Records
Highest daily maximum	25
Lowest daily maximum	3
Highest daily minimum	30
Lowest daily minimum	0
Heaviest daily rainfall	57
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 2 August 1917 by timescale: all-time 1, monthly 6, daily 108.

How Much Records Were Beaten By

97 broken records

Margins by which the 97 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 58.1. Ties are not counted.

Top 20 by Significance

2 August 1917

Top 20 records on 2 August 1917 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
2 August 1917	Groningen-1, NL	daily rain	40.1 mm (1.6 in)	24.6 mm (1.0 in)	30 years	56 of 100 (Notable)
2 August 1917	West Terschelling, NL	daily rain	69.8 mm (2.7 in)	58.1 mm (2.3 in)	39 years	55 of 100 (Notable)
2 August 1917	Kadina, AU	daily rain	39.4 mm (1.6 in)	25.9 mm (1.0 in)	0 years	44 of 100 (Notable)
2 August 1917	Wangerooge, DE	daily rain	43.0 mm (1.7 in)	29.1 mm (1.1 in)	2 years	43 of 100 (Notable)
2 August 1917	Mantova, IT	daily rain	54.0 mm (2.1 in)	32.0 mm (1.3 in)	24 years	43 of 100 (Notable)
2 August 1917	Wirrabara, AU	daily rain	37.3 mm (1.5 in)	24.3 mm (1.0 in)	2 years	40 of 100 (Notable)
2 August 1917	Wirrabara Forest, AU	daily rain	56.4 mm (2.2 in)	32.3 mm (1.3 in)	14 years	39 of 100 (Notable)
2 August 1917	Paskeville, AU	daily rain	33.3 mm (1.3 in)	20.6 mm (0.8 in)	0 years	38 of 100 (Notable)
2 August 1917	Maseskar, SE	monthly rain	56.7 mm (2.2 in)	15.4 mm (0.6 in)	4 years	38 of 100 (Notable)
2 August 1917	Chicoutimi, CA	all-time high min	23.3 C (73.9 F)	1.1 C (2.0 F)	32 years	34 of 100 (Routine)
2 August 1917	Murray Town (Doughboy Creek), AU	daily rain	33.0 mm (1.3 in)	15.5 mm (0.6 in)	10 years	33 of 100 (Routine)
2 August 1917	Wilmington, AU	daily rain	39.9 mm (1.6 in)	20.6 mm (0.8 in)	2 years	32 of 100 (Routine)
2 August 1917	Mount Remarkable, AU	daily rain	31.0 mm (1.2 in)	16.0 mm (0.6 in)	10 years	32 of 100 (Routine)
2 August 1917	Melrose, AU	monthly rain	56.4 mm (2.2 in)	5.1 mm (0.20 in)	30 years	30 of 100 (Routine)
2 August 1917	Maitland (Weetulta), AU	daily rain	25.4 mm (1.0 in)	12.7 mm (0.5 in)	8 years	29 of 100 (Routine)
2 August 1917	Toronto, CA	daily high min	21.1 C (70.0 F)	1.7 C (3.1 F)	53 years	28 of 100 (Routine)
2 August 1917	Setauket Strong, US	daily high max	33.3 C (91.9 F)	4.4 C (7.9 F)	31 years	26 of 100 (Routine)
2 August 1917	Newark Liberty Intl AP, US	daily high max	36.7 C (98.1 F)	2.8 C (5.0 F)	37 years	26 of 100 (Routine)
2 August 1917	World Trade Ctr, US	daily high max	35.6 C (96.1 F)	3.4 C (6.1 F)	37 years	25 of 100 (Routine)
2 August 1917	Northfield, US	daily high max	33.9 C (93.0 F)	5.6 C (10.1 F)	29 years	25 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

1812 to 1917

Records set or tied on this calendar date in each year from 1812 to 1917. 1917 had 115 records.

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

Records on 08-02 in each year
Year	Records
1812	1
1816	2
1828	1
1829	1
1830	1
1835	1
1838	1
1840	1
1841	1
1842	1
1844	1
1855	1
1856	1
1859	1
1861	1
1863	3
1864	1
1867	1
1875	2
1877	2
1878	1
1879	1
1883	1
1884	1
1886	3
1887	1
1888	1
1889	2
1890	3
1891	2
1892	4
1893	2
1894	1
1895	2
1896	1
1898	2
1899	6
1900	7
1901	2
1902	10
1903	4
1904	9
1905	21
1906	21
1907	22
1908	39
1909	25
1910	15
1911	43
1912	52
1913	22
1914	15
1915	42
1916	53
1917	115
1918	37
1919	21
1920	45
1921	88
1922	39
1923	128
1924	138
1925	175
1926	200
1927	308
1928	262
1929	210
1930	600
1931	320
1932	334
1933	542
1934	458
1935	457
1936	391
1937	389
1938	544
1939	762
1940	237
1941	279
1942	354
1943	528
1944	487
1945	269
1946	377
1947	453
1948	455
1949	355
1950	504
1951	305
1952	268
1953	448
1954	371
1955	788
1956	670
1957	339
1958	360
1959	388
1960	637
1961	538
1962	396
1963	314
1964	949
1965	798
1966	462
1967	234
1968	445
1969	395
1970	439
1971	1,048
1972	620
1973	635
1974	513
1975	907
1976	1,098
1977	569
1978	685
1979	569
1980	822
1981	679
1982	819
1983	718
1984	595
1985	742
1986	632
1987	1,062
1988	1,068
1989	1,087
1990	1,055
1991	798
1992	1,132
1993	954
1994	986
1995	1,333
1996	824
1997	794
1998	1,183
1999	1,205
2000	920
2001	947
2002	1,039
2003	1,277
2004	752
2005	961
2006	1,736
2007	834
2008	888
2009	1,106
2010	1,315
2011	1,310
2012	758
2013	817
2014	813
2015	666
2016	608
2017	938
2018	1,097
2019	471
2020	699
2021	835
2022	861
2023	887
2024	1,337
2025	756
2026	1,130

Download the Data

Data for records on 1917-08-02: 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 2 August 1917
Margin	Records
0 to 10	78
10 to 20	10
20 to 30	6
30 to 40	2
40 to 50	0
50 to 60	1