Weather Records on 9 May 1975

465 weather records were set or tied worldwide on 9 May 1975. Highest significance: Gibson Dam, US.

Key Facts for 9 May 1975

On 9 May 1975, 465 weather records were set or tied at long-record stations worldwide.
198 were record highs and 69 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 5 monthly and 459 daily.
Gibson Dam set a daily record precipitation of 52.3 mm (2.1 in) on 9 May 1975.
Across 166 earlier years (1793 to 2026) the same calendar date averaged 432 records.

Record Map

465 stations

465 station records on 9 May 1975 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 9 May 1975: highest significance records shown on the map
Station	Country	Type	Value	Significance
Gibson Dam	United States	Record daily precipitation	52.3 mm (2.1 in)	58 of 100 (Notable)
Steinkopf (Pol)	South Africa	Record daily precipitation	63.0 mm (2.5 in)	56 of 100 (Notable)
Table.Mtn Platteklip	South Africa	Record daily precipitation	89.7 mm (3.5 in)	50 of 100 (Notable)
Biesjesfontein	South Africa	Record daily precipitation	40.0 mm (1.6 in)	50 of 100 (Notable)
Tabl.Mtn Molteno Rsv	South Africa	Record daily precipitation	72.4 mm (2.9 in)	48 of 100 (Notable)
Bet-El	South Africa	Record daily precipitation	25.0 mm (1.0 in)	46 of 100 (Notable)
Newport 1 NW	United States	Record daily precipitation	53.1 mm (2.1 in)	45 of 100 (Notable)
Gonzales 2S	United States	Record daily precipitation	80.3 mm (3.2 in)	45 of 100 (Notable)
Tonteldoos	South Africa	Record daily precipitation	39.0 mm (1.5 in)	43 of 100 (Notable)
Crested Butte	United States	Record snow depth	30.5 cm (12.0 in)	43 of 100 (Notable)
Lebanon	United States	Record daily precipitation	89.2 mm (3.5 in)	42 of 100 (Notable)
Vertentes	Brazil	Record daily precipitation	95.4 mm (3.8 in)	41 of 100 (Notable)
Blackleaf	United States	Record daily precipitation	30.5 mm (1.2 in)	41 of 100 (Notable)
Tuba City	United States	Record low minimum temperature	-8.3 C (17.1 F)	40 of 100 (Notable)
College Hill Lock 11	United States	Record daily precipitation	40.4 mm (1.6 in)	40 of 100 (Notable)
Huichapan	Mexico	Record daily precipitation	35.3 mm (1.4 in)	39 of 100 (Notable)
Ravenna Lock 12	United States	Record daily precipitation	42.2 mm (1.7 in)	39 of 100 (Notable)
Augusta	United States	Record daily precipitation	28.7 mm (1.1 in)	39 of 100 (Notable)
Alta 1 NNW	United States	Record snow depth	66.0 cm (26.0 in)	39 of 100 (Notable)
Groblersplaas	South Africa	Record daily precipitation	31.5 mm (1.2 in)	37 of 100 (Notable)
Montemorelos	Mexico	Record daily precipitation	43.4 mm (1.7 in)	35 of 100 (Notable)
Die Hoop	South Africa	Record daily precipitation	35.0 mm (1.4 in)	35 of 100 (Notable)
San Marcos	United States	Record daily precipitation	69.9 mm (2.8 in)	35 of 100 (Notable)
Toliman	Mexico	Record daily precipitation	29.0 mm (1.1 in)	32 of 100 (Routine)
Willow Lock 13	United States	Record daily precipitation	43.4 mm (1.7 in)	32 of 100 (Routine)
Arcadia	United States	Record daily precipitation	48.3 mm (1.9 in)	32 of 100 (Routine)
Chilliwack	Canada	Record high maximum temperature	27.2 C (81.0 F)	31 of 100 (Routine)
Hebgen Dam	United States	Record snow depth	76.2 cm (30.0 in)	31 of 100 (Routine)
Giddings 5E	United States	Record daily precipitation	87.9 mm (3.5 in)	31 of 100 (Routine)
Kristianstad	Sweden	Record high minimum temperature	11.4 C (52.5 F)	30 of 100 (Routine)
Jonkoping	Sweden	Record high maximum temperature	25.5 C (77.9 F)	30 of 100 (Routine)
Queenstown (Copper Mine)	Australia	Record daily precipitation	37.6 mm (1.5 in)	29 of 100 (Routine)
Waialua 847	United States	Record low minimum temperature	14.4 C (57.9 F)	29 of 100 (Routine)
Vestervig	Denmark	Record high minimum temperature	11.2 C (52.2 F)	28 of 100 (Routine)
Karlshamn	Sweden	Record high maximum temperature	25.0 C (77.0 F)	28 of 100 (Routine)
Gainesboro	United States	Record daily precipitation	46.0 mm (1.8 in)	28 of 100 (Routine)
Flahult	Sweden	Record high maximum temperature	24.2 C (75.6 F)	27 of 100 (Routine)
Amity	United States	Record daily precipitation	42.9 mm (1.7 in)	27 of 100 (Routine)
Live Oak	United States	Record high minimum temperature	19.4 C (66.9 F)	27 of 100 (Routine)
Beaver Is	United States	Record high maximum temperature	22.8 C (73.0 F)	27 of 100 (Routine)
Encinal	United States	Record daily precipitation	25.4 mm (1.0 in)	27 of 100 (Routine)
Freeport 2 NW	United States	Record daily precipitation	56.1 mm (2.2 in)	27 of 100 (Routine)
Houston Barker	United States	Record daily precipitation	38.6 mm (1.5 in)	27 of 100 (Routine)
Beaverlodge Cda	Canada	Record high minimum temperature	8.9 C (48.0 F)	26 of 100 (Routine)
Tranebjerg	Denmark	Record high minimum temperature	10.8 C (51.4 F)	26 of 100 (Routine)
Teocaltiche (Dge)	Mexico	Record low minimum temperature	2.8 C (37.0 F)	26 of 100 (Routine)
Wauchula	United States	Record high maximum temperature	36.1 C (97.0 F)	26 of 100 (Routine)
Chemult	United States	Record snow depth	12.7 cm (5.0 in)	26 of 100 (Routine)
Jeddo 3S	United States	Record daily precipitation	54.6 mm (2.1 in)	26 of 100 (Routine)
Silver Lake Brighton	United States	Record snow depth	246.4 cm (97.0 in)	26 of 100 (Routine)
Tibooburra Post Office	Australia	Record low minimum temperature	2.5 C (36.5 F)	25 of 100 (Routine)
Drobeta Turnu Severin	Romania	Record daily precipitation	29.9 mm (1.2 in)	25 of 100 (Routine)
Fruitland	United States	Record low minimum temperature	-6.1 C (21.0 F)	25 of 100 (Routine)
Newport News Press Bld	United States	Record low minimum temperature	5.0 C (41.0 F)	25 of 100 (Routine)
Juarez	Mexico	Record low maximum temperature	22.8 C (73.0 F)	24 of 100 (Routine)
Welverdiend (Pol)	South Africa	Record daily precipitation	29.5 mm (1.2 in)	24 of 100 (Routine)
Island Park	United States	Record snow depth	119.4 cm (47.0 in)	24 of 100 (Routine)
Danevang 1 W	United States	Record daily precipitation	32.0 mm (1.3 in)	24 of 100 (Routine)
Matagorda #2	United States	Record daily precipitation	41.9 mm (1.6 in)	24 of 100 (Routine)
New Braunfels	United States	Record daily precipitation	61.0 mm (2.4 in)	24 of 100 (Routine)

Counts by Type and Timescale

465 records

Records set or tied on 9 May 1975 by type: Highest daily maximum 127, Lowest daily maximum 19, Highest daily minimum 71, Lowest daily minimum 50, Heaviest daily rainfall 188, Heaviest daily snowfall 1, Deepest snow cover 9.

Records on 9 May 1975 by type
Record type	Records
Highest daily maximum	127
Lowest daily maximum	19
Highest daily minimum	71
Lowest daily minimum	50
Heaviest daily rainfall	188
Heaviest daily snowfall	1
Deepest snow cover	9

Records on 9 May 1975 by timescale: all-time 1, monthly 5, daily 459.

How Much Records Were Beaten By

390 broken records

Margins by which the 390 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 534.0. Ties are not counted.

Top 20 by Significance

9 May 1975

Top 20 records on 9 May 1975 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
9 May 1975	Gibson Dam, US	daily rain	52.3 mm (2.1 in)	39.6 mm (1.6 in)	41 years	58 of 100 (Notable)
9 May 1975	Steinkopf (Pol), ZA	monthly rain	63.0 mm (2.5 in)	12.2 mm (0.5 in)	80 years	56 of 100 (Notable)
9 May 1975	Table.Mtn Platteklip, ZA	daily rain	89.7 mm (3.5 in)	62.2 mm (2.4 in)	4 years	50 of 100 (Notable)
9 May 1975	Biesjesfontein, ZA	daily rain	40.0 mm (1.6 in)	28.6 mm (1.1 in)	25 years	50 of 100 (Notable)
9 May 1975	Tabl.Mtn Molteno Rsv, ZA	daily rain	72.4 mm (2.9 in)	45.4 mm (1.8 in)	4 years	48 of 100 (Notable)
9 May 1975	Bet-El, ZA	daily rain	25.0 mm (1.0 in)	21.7 mm (0.9 in)	22 years	46 of 100 (Notable)
9 May 1975	Newport 1 NW, US	daily rain	53.1 mm (2.1 in)	20.1 mm (0.8 in)	56 years	45 of 100 (Notable)
9 May 1975	Gonzales 2S, US	daily rain	80.3 mm (3.2 in)	55.4 mm (2.2 in)	30 years	45 of 100 (Notable)
9 May 1975	Tonteldoos, ZA	daily rain	39.0 mm (1.5 in)	19.9 mm (0.8 in)	64 years	43 of 100 (Notable)
9 May 1975	Crested Butte, US	daily snow depth	30.5 cm (12.0 in)	22.9 cm (9.0 in)	62 years	43 of 100 (Notable)
9 May 1975	Lebanon, US	monthly rain	89.2 mm (3.5 in)	10.5 mm (0.4 in)	57 years	42 of 100 (Notable)
9 May 1975	Vertentes, BR	daily rain	95.4 mm (3.8 in)	50.0 mm (2.0 in)	6 years	41 of 100 (Notable)
9 May 1975	Blackleaf, US	daily rain	30.5 mm (1.2 in)	17.8 mm (0.7 in)	64 years	41 of 100 (Notable)
9 May 1975	Tuba City, US	daily low min	-8.3 C (17.1 F)	7.2 C (13.0 F)	48 years	40 of 100 (Notable)
9 May 1975	College Hill Lock 11, US	daily rain	40.4 mm (1.6 in)	20.1 mm (0.8 in)	49 years	40 of 100 (Notable)
9 May 1975	Huichapan, MX	daily rain	35.3 mm (1.4 in)	26.9 mm (1.1 in)	32 years	39 of 100 (Notable)
9 May 1975	Ravenna Lock 12, US	daily rain	42.2 mm (1.7 in)	20.6 mm (0.8 in)	49 years	39 of 100 (Notable)
9 May 1975	Augusta, US	daily rain	28.7 mm (1.1 in)	10.2 mm (0.4 in)	66 years	39 of 100 (Notable)
9 May 1975	Alta 1 NNW, US	daily snow depth	66.0 cm (26.0 in)	48.2 cm (19.0 in)	10 years	39 of 100 (Notable)
9 May 1975	Groblersplaas, ZA	daily rain	31.5 mm (1.2 in)	11.2 mm (0.4 in)	57 years	37 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

1793 to 1975

Records set or tied on this calendar date in each year from 1793 to 1975. 1975 had 465 records.

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

Records on 05-09 in each year
Year	Records
1793	1
1795	1
1806	1
1810	1
1823	1
1834	1
1838	1
1843	1
1845	2
1846	1
1848	1
1850	2
1855	2
1857	1
1858	1
1861	1
1862	1
1864	2
1865	2
1867	2
1872	1
1873	2
1874	1
1875	2
1879	4
1880	3
1882	1
1883	2
1884	3
1885	3
1889	3
1890	3
1891	3
1892	1
1893	1
1895	2
1896	4
1897	3
1898	3
1899	2
1900	2
1901	9
1902	8
1903	9
1904	14
1905	34
1906	41
1907	11
1908	16
1909	34
1910	45
1911	23
1912	23
1913	15
1914	43
1915	27
1916	26
1917	50
1918	49
1919	47
1920	56
1921	102
1922	45
1923	461
1924	262
1925	123
1926	196
1927	343
1928	302
1929	166
1930	526
1931	411
1932	132
1933	482
1934	750
1935	111
1936	622
1937	128
1938	171
1939	345
1940	237
1941	335
1942	180
1943	524
1944	412
1945	538
1946	278
1947	1,145
1948	379
1949	417
1950	660
1951	188
1952	348
1953	507
1954	489
1955	288
1956	722
1957	505
1958	355
1959	252
1960	748
1961	516
1962	435
1963	1,103
1964	503
1965	730
1966	994
1967	681
1968	545
1969	653
1970	372
1971	338
1972	587
1973	386
1974	699
1975	465
1976	714
1977	931
1978	649
1979	1,605
1980	1,030
1981	639
1982	523
1983	872
1984	892
1985	829
1986	1,253
1987	1,481
1988	594
1989	1,347
1990	850
1991	759
1992	1,476
1993	967
1994	573
1995	960
1996	1,260
1997	1,088
1998	1,182
1999	970
2000	1,114
2001	969
2002	1,489
2003	1,802
2004	926
2005	851
2006	738
2007	765
2008	693
2009	816
2010	764
2011	1,104
2012	686
2013	684
2014	754
2015	689
2016	917
2017	539
2018	879
2019	1,043
2020	1,673
2021	501
2022	1,308
2023	474
2024	792
2025	622
2026	309

Download the Data

Data for records on 1975-05-09: 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 100	382
100 to 200	4
200 to 300	1
300 to 400	1
400 to 500	1
500 to 600	1