Weather Records on 17 May 1975

365 weather records were set or tied worldwide on 17 May 1975. Highest significance: Wilsons Promontory Lighthouse, AU.

Key Facts for 17 May 1975

On 17 May 1975, 365 weather records were set or tied at long-record stations worldwide.
143 were record highs and 39 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 6 monthly and 359 daily.
Wilsons Promontory Lighthouse set a daily record precipitation of 50.8 mm (2.0 in) on 17 May 1975.
Across 167 earlier years (1802 to 2026) the same calendar date averaged 435 records.

Record Map

365 stations

365 station records on 17 May 1975 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 May 1975: highest significance records shown on the map
Station	Country	Type	Value	Significance
Wilsons Promontory Lighthouse	Australia	Record daily precipitation	50.8 mm (2.0 in)	63 of 100 (Major)
Thule	Australia	Record daily precipitation	42.0 mm (1.7 in)	56 of 100 (Notable)
Weeaproinah	Australia	Record daily precipitation	65.6 mm (2.6 in)	46 of 100 (Notable)
Fleming	United States	Record daily precipitation	50.3 mm (2.0 in)	46 of 100 (Notable)
Lenoir	United States	Record daily precipitation	52.1 mm (2.1 in)	45 of 100 (Notable)
Patterson	United States	Record daily precipitation	49.0 mm (1.9 in)	45 of 100 (Notable)
Little Mtn	United States	Record daily precipitation	41.1 mm (1.6 in)	45 of 100 (Notable)
Inverloch	Australia	Record daily precipitation	32.0 mm (1.3 in)	44 of 100 (Notable)
Parnu	Estonia	Record high minimum temperature	17.4 C (63.3 F)	44 of 100 (Notable)
Cottbus	Germany	Record daily precipitation	36.3 mm (1.4 in)	43 of 100 (Notable)
Batesburg	United States	Record daily precipitation	58.2 mm (2.3 in)	43 of 100 (Notable)
Condado	Brazil	Record daily precipitation	53.1 mm (2.1 in)	41 of 100 (Notable)
Malta	Brazil	Record daily precipitation	67.1 mm (2.6 in)	41 of 100 (Notable)
Deal Island	Australia	Record daily precipitation	28.6 mm (1.1 in)	39 of 100 (Notable)
Winter Haven	United States	Record daily precipitation	50.5 mm (2.0 in)	38 of 100 (Notable)
Lake City 2 E	United States	Record daily precipitation	79.8 mm (3.1 in)	37 of 100 (Notable)
Delmiro Gouveia (Pedra)	Brazil	Record daily precipitation	25.0 mm (1.0 in)	35 of 100 (Notable)
Macabuzinho	Brazil	Record daily precipitation	50.3 mm (2.0 in)	34 of 100 (Routine)
Milstead	United States	Record daily precipitation	33.8 mm (1.3 in)	34 of 100 (Routine)
Pine Level 4 ESE	United States	Record daily precipitation	57.4 mm (2.3 in)	34 of 100 (Routine)
Bainbridge	United States	Record daily precipitation	43.9 mm (1.7 in)	34 of 100 (Routine)
Tarwin Lower (Riverside)	Australia	Record daily precipitation	30.5 mm (1.2 in)	33 of 100 (Routine)
Flinders Island Airport	Australia	Record daily precipitation	33.4 mm (1.3 in)	33 of 100 (Routine)
Velikie Luki	Russia	Record high maximum temperature	30.2 C (86.4 F)	33 of 100 (Routine)
Umea	Sweden	Record high minimum temperature	9.1 C (48.4 F)	33 of 100 (Routine)
Beech Forest	Australia	Record daily precipitation	74.2 mm (2.9 in)	32 of 100 (Routine)
Gander Int'l A	Canada	Record daily snowfall	6.9 cm (2.7 in)	32 of 100 (Routine)
Tartu-Toravere	Estonia	Record high minimum temperature	15.8 C (60.4 F)	32 of 100 (Routine)
Brundidge	United States	Record daily precipitation	57.9 mm (2.3 in)	32 of 100 (Routine)
Clanton	United States	Record daily precipitation	50.8 mm (2.0 in)	32 of 100 (Routine)
Lay Dam	United States	Record daily precipitation	47.8 mm (1.9 in)	32 of 100 (Routine)
Fish Creek (Hoddle Range)	Australia	Record daily precipitation	34.0 mm (1.3 in)	31 of 100 (Routine)
Riachao Do Banabuiu	Brazil	Record daily precipitation	47.4 mm (1.9 in)	31 of 100 (Routine)
Martin Dam	United States	Record daily precipitation	50.8 mm (2.0 in)	31 of 100 (Routine)
Tartu	Estonia	Record high minimum temperature	14.0 C (57.2 F)	30 of 100 (Routine)
Matias Romero (Smn)	Mexico	Record daily precipitation	43.9 mm (1.7 in)	30 of 100 (Routine)
Forman 5 SSE	United States	Record high minimum temperature	16.7 C (62.1 F)	30 of 100 (Routine)
Hannah 2 N	United States	Record high minimum temperature	13.9 C (57.0 F)	30 of 100 (Routine)
Callignee South	Australia	Record daily precipitation	48.0 mm (1.9 in)	29 of 100 (Routine)
Vilnius	Lithuania	Record high minimum temperature	16.5 C (61.7 F)	29 of 100 (Routine)
Haparanda	Sweden	Record high minimum temperature	9.5 C (49.1 F)	29 of 100 (Routine)
Lake Alfred Exp STN	United States	Record daily precipitation	37.8 mm (1.5 in)	29 of 100 (Routine)
Mount Best (Upper Toora)	Australia	Record daily precipitation	34.6 mm (1.4 in)	28 of 100 (Routine)
Sao Luiz Do Curu	Brazil	Record daily precipitation	26.1 mm (1.0 in)	28 of 100 (Routine)
Cacador	Brazil	Record daily precipitation	54.0 mm (2.1 in)	28 of 100 (Routine)
Curralinho	Brazil	Record daily precipitation	54.0 mm (2.1 in)	28 of 100 (Routine)
Jakutsk	Russia	Record high minimum temperature	7.3 C (45.1 F)	28 of 100 (Routine)
Brooklet 1 W	United States	Record daily precipitation	33.3 mm (1.3 in)	28 of 100 (Routine)
Doctortown 1 WSW	United States	Record daily precipitation	68.6 mm (2.7 in)	28 of 100 (Routine)
Glennville 3NW	United States	Record daily precipitation	58.4 mm (2.3 in)	28 of 100 (Routine)
Meleiro	Brazil	Record daily precipitation	41.9 mm (1.6 in)	27 of 100 (Routine)
Hayneville	United States	Record daily precipitation	64.0 mm (2.5 in)	27 of 100 (Routine)
Booneville	United States	Record daily precipitation	75.2 mm (3.0 in)	27 of 100 (Routine)
Rubicon Sec	Australia	Record daily precipitation	97.0 mm (3.8 in)	26 of 100 (Routine)
Minsk	Belarus	Record high maximum temperature	29.0 C (84.2 F)	26 of 100 (Routine)
Pjarnu	Estonia	Record high minimum temperature	17.4 C (63.3 F)	26 of 100 (Routine)
Yoder 5 W	United States	Record daily precipitation	32.0 mm (1.3 in)	26 of 100 (Routine)
Bella Coola	Canada	Record low maximum temperature	8.3 C (46.9 F)	25 of 100 (Routine)
Bogoroditskoye-Fenino	Russia	Record high minimum temperature	16.5 C (61.7 F)	25 of 100 (Routine)
Kharkiv	Ukraine	Record high minimum temperature	18.4 C (65.1 F)	25 of 100 (Routine)

Counts by Type and Timescale

365 records

Records set or tied on 17 May 1975 by type: Highest daily maximum 45, Lowest daily maximum 28, Highest daily minimum 98, Lowest daily minimum 11, Heaviest daily rainfall 174, Heaviest daily snowfall 7, Deepest snow cover 2.

Records on 17 May 1975 by type
Record type	Records
Highest daily maximum	45
Lowest daily maximum	28
Highest daily minimum	98
Lowest daily minimum	11
Heaviest daily rainfall	174
Heaviest daily snowfall	7
Deepest snow cover	2

Records on 17 May 1975 by timescale: all-time 0, monthly 6, daily 359.

How Much Records Were Beaten By

305 broken records

Margins by which the 305 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 254.0. Ties are not counted.

Top 20 by Significance

17 May 1975

Top 20 records on 17 May 1975 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 May 1975	Wilsons Promontory Lighthouse, AU	daily rain	50.8 mm (2.0 in)	25.1 mm (1.0 in)	77 years	63 of 100 (Major)
17 May 1975	Thule, AU	daily rain	42.0 mm (1.7 in)	22.4 mm (0.9 in)	75 years	56 of 100 (Notable)
17 May 1975	Weeaproinah, AU	daily rain	65.6 mm (2.6 in)	26.0 mm (1.0 in)	60 years	46 of 100 (Notable)
17 May 1975	Fleming, US	daily rain	50.3 mm (2.0 in)	34.0 mm (1.3 in)	72 years	46 of 100 (Notable)
17 May 1975	Lenoir, US	daily rain	52.1 mm (2.1 in)	6.4 mm (0.25 in)	102 years	45 of 100 (Notable)
17 May 1975	Patterson, US	daily rain	49.0 mm (1.9 in)	24.4 mm (1.0 in)	70 years	45 of 100 (Notable)
17 May 1975	Little Mtn, US	daily rain	41.1 mm (1.6 in)	21.8 mm (0.9 in)	66 years	45 of 100 (Notable)
17 May 1975	Inverloch, AU	daily rain	32.0 mm (1.3 in)	10.7 mm (0.4 in)	75 years	44 of 100 (Notable)
17 May 1975	Parnu, EE	monthly high min	17.4 C (63.3 F)	0.3 C (0.5 F)	85 years	44 of 100 (Notable)
17 May 1975	Cottbus, DE	daily rain	36.3 mm (1.4 in)	18.3 mm (0.7 in)	8 years	43 of 100 (Notable)
17 May 1975	Batesburg, US	daily rain	58.2 mm (2.3 in)	44.5 mm (1.8 in)	6 years	43 of 100 (Notable)
17 May 1975	Condado, BR	daily rain	53.1 mm (2.1 in)	47.1 mm (1.9 in)	28 years	41 of 100 (Notable)
17 May 1975	Malta, BR	daily rain	67.1 mm (2.6 in)	49.9 mm (2.0 in)	10 years	41 of 100 (Notable)
17 May 1975	Deal Island, AU	daily rain	28.6 mm (1.1 in)	5.2 mm (0.20 in)	76 years	39 of 100 (Notable)
17 May 1975	Winter Haven, US	daily rain	50.5 mm (2.0 in)	39.3 mm (1.5 in)	28 years	38 of 100 (Notable)
17 May 1975	Lake City 2 E, US	daily rain	79.8 mm (3.1 in)	13.8 mm (0.5 in)	69 years	37 of 100 (Notable)
17 May 1975	Delmiro Gouveia (Pedra), BR	daily rain	25.0 mm (1.0 in)	18.3 mm (0.7 in)	28 years	35 of 100 (Notable)
17 May 1975	Macabuzinho, BR	daily rain	50.3 mm (2.0 in)	34.7 mm (1.4 in)	9 years	34 of 100 (Routine)
17 May 1975	Milstead, US	daily rain	33.8 mm (1.3 in)	9.4 mm (0.37 in)	70 years	34 of 100 (Routine)
17 May 1975	Pine Level 4 ESE, US	daily rain	57.4 mm (2.3 in)	39.6 mm (1.6 in)	20 years	34 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

1802 to 1975

Records set or tied on this calendar date in each year from 1802 to 1975. 1975 had 365 records.

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

Records on 05-17 in each year
Year	Records
1802	2
1803	1
1808	1
1816	1
1834	1
1837	1
1839	1
1847	2
1848	1
1851	1
1853	1
1855	1
1858	1
1859	1
1861	2
1862	2
1863	2
1864	1
1871	2
1872	2
1873	2
1874	4
1877	1
1878	1
1879	2
1880	1
1881	1
1882	2
1883	3
1885	1
1887	1
1888	2
1889	3
1891	8
1892	4
1893	3
1895	8
1896	2
1897	3
1898	6
1899	7
1900	12
1901	2
1902	3
1903	9
1904	12
1905	10
1906	22
1907	10
1908	5
1909	33
1910	16
1911	30
1912	16
1913	24
1914	24
1915	53
1916	49
1917	18
1918	56
1919	35
1920	46
1921	50
1922	30
1923	95
1924	80
1925	326
1926	133
1927	264
1928	127
1929	168
1930	421
1931	201
1932	288
1933	365
1934	373
1935	341
1936	270
1937	183
1938	340
1939	285
1940	338
1941	408
1942	589
1943	855
1944	521
1945	799
1946	586
1947	249
1948	412
1949	544
1950	371
1951	373
1952	777
1953	441
1954	298
1955	570
1956	1,166
1957	469
1958	331
1959	488
1960	402
1961	291
1962	1,325
1963	368
1964	417
1965	462
1966	489
1967	644
1968	564
1969	638
1970	711
1971	723
1972	610
1973	1,016
1974	1,302
1975	365
1976	426
1977	1,078
1978	872
1979	459
1980	768
1981	940
1982	476
1983	1,326
1984	925
1985	561
1986	921
1987	1,054
1988	1,096
1989	1,307
1990	1,135
1991	1,237
1992	1,025
1993	495
1994	858
1995	1,734
1996	1,706
1997	1,619
1998	1,080
1999	795
2000	825
2001	960
2002	964
2003	1,127
2004	769
2005	784
2006	1,522
2007	742
2008	1,309
2009	1,050
2010	880
2011	1,483
2012	711
2013	739
2014	1,062
2015	824
2016	741
2017	1,302
2018	726
2019	686
2020	496
2021	443
2022	479
2023	385
2024	566
2025	928
2026	745

Download the Data

Data for records on 1975-05-17: 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 50	302
50 to 100	1
100 to 150	0
150 to 200	1
200 to 250	0
250 to 300	1