Weather Records on 17 August 1930

138 weather records were set or tied worldwide on 17 August 1930. Highest significance: Visby_Flygplats, SE.

Key Facts for 17 August 1930

On 17 August 1930, 138 weather records were set or tied at long-record stations worldwide.
52 were record highs and 36 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 3 monthly and 135 daily.
Visby_Flygplats set a daily record precipitation of 59.0 mm (2.3 in) on 17 August 1930.
Across 162 earlier years (1797 to 2026) the same calendar date averaged 476 records.

Record Map

138 stations

138 station records on 17 August 1930 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 August 1930: highest significance records shown on the map
Station	Country	Type	Value	Significance
Visby_Flygplats	Sweden	Record daily precipitation	59.0 mm (2.3 in)	55 of 100 (Notable)
Hamburg Fuhlsbuettel	Germany	Record daily precipitation	45.0 mm (1.8 in)	45 of 100 (Notable)
Bee Branch	United States	Record daily precipitation	89.4 mm (3.5 in)	43 of 100 (Notable)
Academy 2NE	United States	Record daily precipitation	56.4 mm (2.2 in)	42 of 100 (Notable)
Joliet	United States	Record daily precipitation	54.9 mm (2.2 in)	42 of 100 (Notable)
Hoburg	Sweden	Record daily precipitation	45.9 mm (1.8 in)	41 of 100 (Notable)
Minonk	United States	Record daily precipitation	69.3 mm (2.7 in)	41 of 100 (Notable)
Berlin-Dahlem	Germany	Record daily precipitation	26.7 mm (1.1 in)	39 of 100 (Notable)
Augusta	United States	Record daily precipitation	63.0 mm (2.5 in)	29 of 100 (Routine)
Kennebec	United States	Record daily precipitation	33.8 mm (1.3 in)	29 of 100 (Routine)
Gorki	Belarus	Record daily precipitation	32.4 mm (1.3 in)	26 of 100 (Routine)
Trenton	United States	Record daily precipitation	51.6 mm (2.0 in)	26 of 100 (Routine)
Wheeling (1)	United States	Record low maximum temperature	21.1 C (70.0 F)	25 of 100 (Routine)
Llano	United States	Record daily precipitation	55.4 mm (2.2 in)	24 of 100 (Routine)
Wien	Austria	Record low maximum temperature	16.8 C (62.2 F)	23 of 100 (Routine)
Pointe Au Pere	Canada	Record low maximum temperature	10.0 C (50.0 F)	23 of 100 (Routine)
Chatham	Canada	Record daily precipitation	55.9 mm (2.2 in)	23 of 100 (Routine)
Hvar	Croatia	Record low minimum temperature	13.5 C (56.3 F)	22 of 100 (Routine)
Harlan	United States	Record daily precipitation	39.6 mm (1.6 in)	22 of 100 (Routine)
Zametchino	Russia	Record high minimum temperature	20.5 C (68.9 F)	21 of 100 (Routine)
Le Mars	United States	Record daily precipitation	36.8 mm (1.4 in)	21 of 100 (Routine)
Waynesville 1 E	United States	Record high maximum temperature	33.3 C (91.9 F)	21 of 100 (Routine)
Gotska Sandon	Sweden	Record daily precipitation	22.2 mm (0.9 in)	20 of 100 (Routine)
Olands Norra Udde	Sweden	Record daily precipitation	24.0 mm (0.9 in)	20 of 100 (Routine)
Swift Current	Canada	Record daily precipitation	22.9 mm (0.9 in)	20 of 100 (Routine)
Dublin Phoenix Park	Ireland	Record daily precipitation	20.7 mm (0.8 in)	20 of 100 (Routine)
Bjuraker	Sweden	Record daily precipitation	16.7 mm (0.7 in)	20 of 100 (Routine)
Dresden	United States	Record daily precipitation	23.4 mm (0.9 in)	20 of 100 (Routine)
Maatsuyker Island Lighthouse	Australia	Record daily precipitation	21.8 mm (0.9 in)	20 of 100 (Routine)
Madison	United States	Record daily precipitation	23.6 mm (0.9 in)	20 of 100 (Routine)
Yerevan	Armenia	Record high minimum temperature	23.4 C (74.1 F)	20 of 100 (Routine)
Galway	Ireland	Record daily precipitation	21.4 mm (0.8 in)	20 of 100 (Routine)
Elatma	Russia	Record high minimum temperature	21.0 C (69.8 F)	20 of 100 (Routine)
Sigourney	United States	Record daily precipitation	45.2 mm (1.8 in)	20 of 100 (Routine)
Praha-Klementinum	Czech Republic	Record low maximum temperature	14.0 C (57.2 F)	19 of 100 (Routine)
Saentis	Switzerland	Record low minimum temperature	-3.6 C (25.5 F)	19 of 100 (Routine)
Colby	United States	Record daily precipitation	53.3 mm (2.1 in)	19 of 100 (Routine)
Bridgeport	United States	Record daily precipitation	14.5 mm (0.6 in)	19 of 100 (Routine)
Umea	Sweden	Record high maximum temperature	24.6 C (76.3 F)	18 of 100 (Routine)
Tuscaloosa Oliver Dam	United States	Record daily precipitation	27.9 mm (1.1 in)	18 of 100 (Routine)
Kissimmee	United States	Record high minimum temperature	24.4 C (75.9 F)	18 of 100 (Routine)
Missoula 6 NW WFO	United States	Record daily precipitation	13.5 mm (0.5 in)	18 of 100 (Routine)
Brisbane Regional Office	Australia	Record low minimum temperature	5.6 C (42.1 F)	17 of 100 (Routine)
Enisejsk	Russia	Record high minimum temperature	15.3 C (59.5 F)	17 of 100 (Routine)
Gallivare_A	Sweden	Record high maximum temperature	26.8 C (80.2 F)	17 of 100 (Routine)
Cottbus	Germany	Record daily precipitation	25.1 mm (1.0 in)	16 of 100 (Routine)
Stockholm	Sweden	Record daily precipitation	18.2 mm (0.7 in)	16 of 100 (Routine)
Dahlonega 4WSW	United States	Record high maximum temperature	33.9 C (93.0 F)	16 of 100 (Routine)
Galva	United States	Record daily precipitation	43.4 mm (1.7 in)	16 of 100 (Routine)
Gainesville	United States	Record high minimum temperature	26.7 C (80.1 F)	16 of 100 (Routine)
Gayndah Post Office	Australia	Record low minimum temperature	-1.7 C (28.9 F)	15 of 100 (Routine)
Saskatoon Diefenbaker Int'l A	Canada	Record high minimum temperature	16.1 C (61.0 F)	15 of 100 (Routine)
Arhangelsk	Russia	Record high minimum temperature	17.8 C (64.0 F)	15 of 100 (Routine)
Linkoeping-Malmslaett	Sweden	Record low maximum temperature	15.0 C (59.0 F)	15 of 100 (Routine)
Athens	United States	Record high minimum temperature	23.9 C (75.0 F)	15 of 100 (Routine)
Confluence 1 NW	United States	Record daily precipitation	19.8 mm (0.8 in)	15 of 100 (Routine)
Burkes Garden	United States	Record high maximum temperature	30.6 C (87.1 F)	15 of 100 (Routine)
Pembina	United States	Record high minimum temperature	17.8 C (64.0 F)	15 of 100 (Routine)
Point Escuminac	Canada	Record daily precipitation	32.8 mm (1.3 in)	14 of 100 (Routine)
Kazan	Russia	Record high maximum temperature	34.7 C (94.5 F)	14 of 100 (Routine)

Counts by Type and Timescale

138 records

Records set or tied on 17 August 1930 by type: Highest daily maximum 19, Lowest daily maximum 22, Highest daily minimum 33, Lowest daily minimum 14, Heaviest daily rainfall 50.

Records on 17 August 1930 by type
Record type	Records
Highest daily maximum	19
Lowest daily maximum	22
Highest daily minimum	33
Lowest daily minimum	14
Heaviest daily rainfall	50
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 17 August 1930 by timescale: all-time 0, monthly 3, daily 135.

How Much Records Were Beaten By

118 broken records

Margins by which the 118 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 71.4. Ties are not counted.

Top 20 by Significance

17 August 1930

Top 20 records on 17 August 1930 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 August 1930	Visby_Flygplats, SE	daily rain	59.0 mm (2.3 in)	53.1 mm (2.1 in)	28 years	55 of 100 (Notable)
17 August 1930	Hamburg Fuhlsbuettel, DE	daily rain	45.0 mm (1.8 in)	29.1 mm (1.1 in)	5 years	45 of 100 (Notable)
17 August 1930	Bee Branch, US	daily rain	89.4 mm (3.5 in)	71.4 mm (2.8 in)	3 years	43 of 100 (Notable)
17 August 1930	Academy 2NE, US	daily rain	56.4 mm (2.2 in)	37.3 mm (1.5 in)	30 years	42 of 100 (Notable)
17 August 1930	Joliet, US	daily rain	54.9 mm (2.2 in)	38.4 mm (1.5 in)	29 years	42 of 100 (Notable)
17 August 1930	Hoburg, SE	monthly rain	45.9 mm (1.8 in)	8.7 mm (0.34 in)	39 years	41 of 100 (Notable)
17 August 1930	Minonk, US	daily rain	69.3 mm (2.7 in)	47.7 mm (1.9 in)	23 years	41 of 100 (Notable)
17 August 1930	Berlin-Dahlem, DE	daily rain	26.7 mm (1.1 in)	16.2 mm (0.6 in)	16 years	39 of 100 (Notable)
17 August 1930	Augusta, US	daily rain	63.0 mm (2.5 in)	25.4 mm (1.0 in)	32 years	29 of 100 (Routine)
17 August 1930	Kennebec, US	daily rain	33.8 mm (1.3 in)	22.4 mm (0.9 in)	16 years	29 of 100 (Routine)
17 August 1930	Gorki, BY	daily rain	32.4 mm (1.3 in)	13.4 mm (0.5 in)	15 years	26 of 100 (Routine)
17 August 1930	Trenton, US	daily rain	51.6 mm (2.0 in)	29.2 mm (1.1 in)	4 years	26 of 100 (Routine)
17 August 1930	Wheeling (1), US	daily low max	21.1 C (70.0 F)	4.5 C (8.1 F)	32 years	25 of 100 (Routine)
17 August 1930	Llano, US	daily rain	55.4 mm (2.2 in)	22.4 mm (0.9 in)	32 years	24 of 100 (Routine)
17 August 1930	Wien, AT	daily low max	16.8 C (62.2 F)	0.1 C (0.2 F)	55 years	23 of 100 (Routine)
17 August 1930	Pointe Au Pere, CA	daily low max	10.0 C (50.0 F)	1.1 C (2.0 F)	52 years	23 of 100 (Routine)
17 August 1930	Chatham, CA	daily rain	55.9 mm (2.2 in)	18.8 mm (0.7 in)	1 year	23 of 100 (Routine)
17 August 1930	Hvar, HR	monthly low min	13.5 C (56.3 F)	0.7 C (1.3 F)	14 years	22 of 100 (Routine)
17 August 1930	Harlan, US	daily rain	39.6 mm (1.6 in)	26.1 mm (1.0 in)	15 years	22 of 100 (Routine)
17 August 1930	Zametchino, RU	daily high min	20.5 C (68.9 F)	1.8 C (3.2 F)	39 years	21 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 1930

Records set or tied on this calendar date in each year from 1797 to 1930. 1930 had 138 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 1930-08-17: 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 10	91
10 to 20	16
20 to 30	6
30 to 40	2
40 to 50	1
50 to 60	1
60 to 70	0
70 to 80	1