Weather Records on 17 August 1958

519 weather records were set or tied worldwide on 17 August 1958. Highest significance: Port Arthur, AU.

Key Facts for 17 August 1958

On 17 August 1958, 519 weather records were set or tied at long-record stations worldwide.
188 were record highs and 52 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 29 monthly and 488 daily.
Port Arthur set a monthly record daily precipitation of 109.0 mm (4.3 in) on 17 August 1958.
Across 162 earlier years (1797 to 2026) the same calendar date averaged 473 records.

Record Map

519 stations

519 station records on 17 August 1958 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 August 1958: highest significance records shown on the map
Station	Country	Type	Value	Significance
Port Arthur	Australia	Record daily precipitation	109.0 mm (4.3 in)	90 of 100 (Exceptional)
Lenah Valley (Augusta Road)	Australia	Record daily precipitation	58.7 mm (2.3 in)	69 of 100 (Major)
Buckland (Brockley)	Australia	Record daily precipitation	106.4 mm (4.2 in)	67 of 100 (Major)
Hobart (Waterworks Reserve)	Australia	Record daily precipitation	93.5 mm (3.7 in)	67 of 100 (Major)
Mount Wellington (the Springs)	Australia	Record daily precipitation	177.3 mm (7.0 in)	67 of 100 (Major)
Bellerive (Fort Street)	Australia	Record daily precipitation	38.6 mm (1.5 in)	63 of 100 (Major)
Premaydena Hatchery	Australia	Record daily precipitation	84.3 mm (3.3 in)	57 of 100 (Notable)
Hobart (Ellerslie Road)	Australia	Record daily precipitation	39.4 mm (1.6 in)	56 of 100 (Notable)
Nugent	Australia	Record daily precipitation	134.1 mm (5.3 in)	54 of 100 (Notable)
Broadmarsh (Corleen)	Australia	Record daily precipitation	48.3 mm (1.9 in)	54 of 100 (Notable)
Killora (Grasmere)	Australia	Record daily precipitation	30.0 mm (1.2 in)	54 of 100 (Notable)
Lunawanna	Australia	Record daily precipitation	80.0 mm (3.1 in)	54 of 100 (Notable)
Risdon	Australia	Record daily precipitation	63.0 mm (2.5 in)	53 of 100 (Notable)
Greenethorpe (Iandra)	Australia	Record daily precipitation	31.2 mm (1.2 in)	52 of 100 (Notable)
Sandford (Maydena)	Australia	Record daily precipitation	29.7 mm (1.2 in)	52 of 100 (Notable)
Snug Primary School	Australia	Record daily precipitation	59.7 mm (2.4 in)	52 of 100 (Notable)
Woodbridge	Australia	Record daily precipitation	42.7 mm (1.7 in)	52 of 100 (Notable)
Shawnee	United States	Record daily precipitation	113.0 mm (4.4 in)	52 of 100 (Notable)
Lake Leake (Elizabeth River)	Australia	Record daily precipitation	50.0 mm (2.0 in)	50 of 100 (Notable)
Kempton (Oakmore)	Australia	Record daily precipitation	26.7 mm (1.1 in)	50 of 100 (Notable)
Pembroke Eddy Match	Canada	Record low maximum temperature	11.1 C (52.0 F)	50 of 100 (Notable)
Cloudcroft	United States	Record daily precipitation	53.3 mm (2.1 in)	49 of 100 (Notable)
Bothwell (Franklin Street)	Australia	Record daily precipitation	30.7 mm (1.2 in)	48 of 100 (Notable)
Bagdad Post Office	Australia	Record daily precipitation	30.5 mm (1.2 in)	47 of 100 (Notable)
Mount Nelson	Australia	Record daily precipitation	30.5 mm (1.2 in)	47 of 100 (Notable)
Robeville	Australia	Record daily precipitation	25.7 mm (1.0 in)	47 of 100 (Notable)
Waddamana Field Study Centre	Australia	Record daily precipitation	34.3 mm (1.4 in)	46 of 100 (Notable)
Cape Bruny Lighthouse	Australia	Record daily precipitation	41.9 mm (1.6 in)	45 of 100 (Notable)
Apsley (Parki)	Australia	Record daily precipitation	27.4 mm (1.1 in)	44 of 100 (Notable)
Wandsworth (Strabanne)	Australia	Record daily precipitation	33.3 mm (1.3 in)	43 of 100 (Notable)
Swansea Post Office	Australia	Record daily precipitation	26.2 mm (1.0 in)	43 of 100 (Notable)
Oatlands (Bow Hill)	Australia	Record daily precipitation	50.8 mm (2.0 in)	43 of 100 (Notable)
Bordeaux-Merignac	France	Record daily precipitation	35.1 mm (1.4 in)	43 of 100 (Notable)
Gooloogong Post Office	Australia	Record daily precipitation	39.6 mm (1.6 in)	41 of 100 (Notable)
Osterley	Australia	Record daily precipitation	38.4 mm (1.5 in)	41 of 100 (Notable)
Rison	United States	Record daily precipitation	60.2 mm (2.4 in)	40 of 100 (Notable)
Poplarville Exp STN	United States	Record daily precipitation	81.3 mm (3.2 in)	40 of 100 (Notable)
Clinton	United States	Record daily precipitation	69.9 mm (2.8 in)	40 of 100 (Notable)
Kellevie	Australia	Record daily precipitation	30.7 mm (1.2 in)	39 of 100 (Notable)
Songadh	India	Record daily precipitation	88.9 mm (3.5 in)	39 of 100 (Notable)
Biswan	India	Record daily precipitation	166.4 mm (6.6 in)	39 of 100 (Notable)
Middleton Post Office	Australia	Record daily precipitation	32.3 mm (1.3 in)	38 of 100 (Notable)
Melton Mowbray (Lovely Banks)	Australia	Record daily precipitation	31.8 mm (1.3 in)	38 of 100 (Notable)
Bothwell (Cluny)	Australia	Record daily precipitation	44.5 mm (1.8 in)	38 of 100 (Notable)
Laurel Hill (Kundiewa)	Australia	Record daily precipitation	41.1 mm (1.6 in)	37 of 100 (Notable)
Heron 2 NW	United States	Record high minimum temperature	19.4 C (66.9 F)	37 of 100 (Notable)
Ringarooma (Charles Street)	Australia	Record daily precipitation	38.9 mm (1.5 in)	36 of 100 (Notable)
Ankleshwar	India	Record daily precipitation	95.3 mm (3.8 in)	36 of 100 (Notable)
Dapoli	India	Record daily precipitation	169.2 mm (6.7 in)	36 of 100 (Notable)
Lymington (Fattys Lane)	Australia	Record daily precipitation	56.1 mm (2.2 in)	34 of 100 (Routine)
North Lake	United States	Record daily precipitation	33.0 mm (1.3 in)	34 of 100 (Routine)
Uriarra Forest	Australia	Record daily precipitation	41.9 mm (1.6 in)	33 of 100 (Routine)
Forsyth 2 E	United States	Record high minimum temperature	20.6 C (69.1 F)	33 of 100 (Routine)
El Dorado Goodwin Fld	United States	Record low maximum temperature	25.6 C (78.1 F)	33 of 100 (Routine)
Bendoc Park	Australia	Record daily precipitation	25.4 mm (1.0 in)	32 of 100 (Routine)
Palpan	Mexico	Record daily precipitation	54.9 mm (2.2 in)	32 of 100 (Routine)
Waldron	United States	Record daily precipitation	69.1 mm (2.7 in)	32 of 100 (Routine)
Bream Creek (Stroud)	Australia	Record daily precipitation	25.1 mm (1.0 in)	31 of 100 (Routine)
Eaglehawk Neck (Jetty Road)	Australia	Record daily precipitation	28.7 mm (1.1 in)	31 of 100 (Routine)
White River	Canada	Record low maximum temperature	11.1 C (52.0 F)	31 of 100 (Routine)

Counts by Type and Timescale

519 records

Records set or tied on 17 August 1958 by type: Highest daily maximum 55, Lowest daily maximum 31, Highest daily minimum 133, Lowest daily minimum 21, Heaviest daily rainfall 279.

Records on 17 August 1958 by type
Record type	Records
Highest daily maximum	55
Lowest daily maximum	31
Highest daily minimum	133
Lowest daily minimum	21
Heaviest daily rainfall	279
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 17 August 1958 by timescale: all-time 2, monthly 29, daily 488.

How Much Records Were Beaten By

423 broken records

Margins by which the 423 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 110.8. Ties are not counted.

Top 20 by Significance

17 August 1958

Top 20 records on 17 August 1958 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 August 1958	Port Arthur, AU	monthly rain	109.0 mm (4.3 in)	48.0 mm (1.9 in)	100 years	90 of 100 (Exceptional)
17 August 1958	Lenah Valley (Augusta Road), AU	monthly rain	58.7 mm (2.3 in)	17.3 mm (0.7 in)	61 years	69 of 100 (Major)
17 August 1958	Buckland (Brockley), AU	monthly rain	106.4 mm (4.2 in)	68.8 mm (2.7 in)	42 years	67 of 100 (Major)
17 August 1958	Hobart (Waterworks Reserve), AU	monthly rain	93.5 mm (3.7 in)	32.5 mm (1.3 in)	39 years	67 of 100 (Major)
17 August 1958	Mount Wellington (the Springs), AU	monthly rain	177.3 mm (7.0 in)	110.8 mm (4.4 in)	39 years	67 of 100 (Major)
17 August 1958	Bellerive (Fort Street), AU	daily rain	38.6 mm (1.5 in)	25.4 mm (1.0 in)	57 years	63 of 100 (Major)
17 August 1958	Premaydena Hatchery, AU	monthly rain	84.3 mm (3.3 in)	33.2 mm (1.3 in)	8 years	57 of 100 (Notable)
17 August 1958	Hobart (Ellerslie Road), AU	daily rain	39.4 mm (1.6 in)	28.2 mm (1.1 in)	36 years	56 of 100 (Notable)
17 August 1958	Nugent, AU	monthly rain	134.1 mm (5.3 in)	93.5 mm (3.7 in)	0 years	54 of 100 (Notable)
17 August 1958	Broadmarsh (Corleen), AU	monthly rain	48.3 mm (1.9 in)	17.6 mm (0.7 in)	7 years	54 of 100 (Notable)
17 August 1958	Killora (Grasmere), AU	daily rain	30.0 mm (1.2 in)	21.9 mm (0.9 in)	36 years	54 of 100 (Notable)
17 August 1958	Lunawanna, AU	monthly rain	80.0 mm (3.1 in)	15.5 mm (0.6 in)	39 years	54 of 100 (Notable)
17 August 1958	Risdon, AU	monthly rain	63.0 mm (2.5 in)	30.7 mm (1.2 in)	0 years	53 of 100 (Notable)
17 August 1958	Greenethorpe (Iandra), AU	daily rain	31.2 mm (1.2 in)	23.3 mm (0.9 in)	36 years	52 of 100 (Notable)
17 August 1958	Sandford (Maydena), AU	daily rain	29.7 mm (1.2 in)	17.3 mm (0.7 in)	36 years	52 of 100 (Notable)
17 August 1958	Snug Primary School, AU	daily rain	59.7 mm (2.4 in)	39.4 mm (1.6 in)	27 years	52 of 100 (Notable)
17 August 1958	Woodbridge, AU	daily rain	42.7 mm (1.7 in)	29.0 mm (1.1 in)	31 years	52 of 100 (Notable)
17 August 1958	Shawnee, US	monthly rain	113.0 mm (4.4 in)	41.9 mm (1.6 in)	22 years	52 of 100 (Notable)
17 August 1958	Lake Leake (Elizabeth River), AU	daily rain	50.0 mm (2.0 in)	30.7 mm (1.2 in)	13 years	50 of 100 (Notable)
17 August 1958	Kempton (Oakmore), AU	daily rain	26.7 mm (1.1 in)	14.8 mm (0.6 in)	13 years	50 of 100 (Notable)

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 1958

Records set or tied on this calendar date in each year from 1797 to 1958. 1958 had 519 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 1958-08-17: 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 2026-10-16. Last revised 16 October 2026 (2026-10-16).

Margin	Records
0 to 20	386
20 to 40	28
40 to 60	4
60 to 80	3
80 to 100	1
100 to 120	1