Weather Records on 9 May 1978

649 weather records were set or tied worldwide on 9 May 1978. Highest significance: Cordele, US.

Key Facts for 9 May 1978

On 9 May 1978, 649 weather records were set or tied at long-record stations worldwide.
193 were record highs and 97 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 13 monthly and 636 daily.
Cordele set a daily record precipitation of 89.4 mm (3.5 in) on 9 May 1978.
Across 166 earlier years (1793 to 2026) the same calendar date averaged 431 records.

Record Map

649 stations

649 station records on 9 May 1978 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 9 May 1978: highest significance records shown on the map
Station	Country	Type	Value	Significance
Cordele	United States	Record daily precipitation	89.4 mm (3.5 in)	67 of 100 (Major)
Talladega	United States	Record daily precipitation	69.9 mm (2.8 in)	51 of 100 (Notable)
Montgomery AP	United States	Record daily precipitation	132.8 mm (5.2 in)	47 of 100 (Notable)
Olivedos (Sao Francisco)	Brazil	Record daily precipitation	79.0 mm (3.1 in)	46 of 100 (Notable)
Barra de Santa Rosa	Brazil	Record daily precipitation	42.4 mm (1.7 in)	45 of 100 (Notable)
Walterboro 1 SW	United States	Record daily precipitation	41.9 mm (1.6 in)	45 of 100 (Notable)
Salisbury	United States	Record daily precipitation	42.4 mm (1.7 in)	41 of 100 (Notable)
Barra Do Cuiete-Jusante	Brazil	Record daily precipitation	27.8 mm (1.1 in)	40 of 100 (Notable)
Blackville 3 W	United States	Record daily precipitation	66.5 mm (2.6 in)	40 of 100 (Notable)
Baixo Guandu	Brazil	Record daily precipitation	31.0 mm (1.2 in)	39 of 100 (Notable)
Lordsburg 4 SE	United States	Record low minimum temperature	-4.4 C (24.1 F)	39 of 100 (Notable)
Georgetown 2 E	United States	Record daily precipitation	43.2 mm (1.7 in)	39 of 100 (Notable)
Little Mtn	United States	Record daily precipitation	47.8 mm (1.9 in)	39 of 100 (Notable)
Houston Wb City	United States	Record high maximum temperature	33.3 C (91.9 F)	38 of 100 (Notable)
Stillwater	Canada	Record daily precipitation	35.0 mm (1.4 in)	37 of 100 (Notable)
Ozark 6 NNW	United States	Record daily precipitation	47.2 mm (1.9 in)	37 of 100 (Notable)
Louisville 1 E	United States	Record daily precipitation	28.4 mm (1.1 in)	37 of 100 (Notable)
Areia Branca	Brazil	Record daily precipitation	99.5 mm (3.9 in)	36 of 100 (Notable)
Itagua	Brazil	Record daily precipitation	46.8 mm (1.8 in)	36 of 100 (Notable)
San Juan del Rio (Smn)	Mexico	Record daily precipitation	27.7 mm (1.1 in)	36 of 100 (Notable)
Milstead	United States	Record daily precipitation	60.7 mm (2.4 in)	36 of 100 (Notable)
Espanola	United States	Record low minimum temperature	-6.1 C (21.0 F)	36 of 100 (Notable)
Conasauga 2N	United States	Record daily precipitation	55.9 mm (2.2 in)	36 of 100 (Notable)
Lewisburg Exp STN	United States	Record daily precipitation	58.7 mm (2.3 in)	36 of 100 (Notable)
Siliguri	India	Record daily precipitation	89.9 mm (3.5 in)	34 of 100 (Routine)
Pedro Velho (Dnocs)	Brazil	Record daily precipitation	42.0 mm (1.7 in)	32 of 100 (Routine)
Pointe Au Pere	Canada	Record high minimum temperature	7.8 C (46.0 F)	32 of 100 (Routine)
Baddeck	Canada	Record daily precipitation	27.9 mm (1.1 in)	32 of 100 (Routine)
Escarcega (Smn)	Mexico	Record high minimum temperature	27.2 C (81.0 F)	32 of 100 (Routine)
Oswego	United States	Record daily precipitation	31.2 mm (1.2 in)	32 of 100 (Routine)
Nome AP	United States	Record high maximum temperature	14.4 C (57.9 F)	32 of 100 (Routine)
Covington	United States	Record high minimum temperature	18.3 C (64.9 F)	31 of 100 (Routine)
Saluda	United States	Record daily precipitation	36.3 mm (1.4 in)	31 of 100 (Routine)
Murfreesboro 5 N	United States	Record daily precipitation	37.1 mm (1.5 in)	31 of 100 (Routine)
Nome AP	United States	Record high minimum temperature	5.6 C (42.1 F)	31 of 100 (Routine)
Salzburg	Austria	Record daily precipitation	30.1 mm (1.2 in)	30 of 100 (Routine)
Valley Head	United States	Record daily precipitation	61.5 mm (2.4 in)	30 of 100 (Routine)
Quitman 2 NW	United States	Record high minimum temperature	22.2 C (72.0 F)	30 of 100 (Routine)
Swainsboro	United States	Record daily precipitation	28.4 mm (1.1 in)	30 of 100 (Routine)
Columbia UNIV of Sc	United States	Record daily precipitation	44.5 mm (1.8 in)	30 of 100 (Routine)
Yeelana (Brimpton Lake)	Australia	Record daily precipitation	25.0 mm (1.0 in)	29 of 100 (Routine)
Chama	United States	Record low minimum temperature	-7.2 C (19.0 F)	29 of 100 (Routine)
Angicos	Brazil	Record daily precipitation	39.0 mm (1.5 in)	28 of 100 (Routine)
Grand Lake 1 NW	United States	Record low minimum temperature	-13.3 C (8.1 F)	28 of 100 (Routine)
Greenville 2 NE	United States	Record daily precipitation	25.7 mm (1.0 in)	28 of 100 (Routine)
Winnsboro	United States	Record daily precipitation	32.0 mm (1.3 in)	28 of 100 (Routine)
Warsaw 2 NW	United States	Record daily precipitation	42.4 mm (1.7 in)	28 of 100 (Routine)
Mobile	United States	Record daily precipitation	78.2 mm (3.1 in)	28 of 100 (Routine)
Gainesville Lock	United States	Record daily precipitation	48.0 mm (1.9 in)	27 of 100 (Routine)
Ft Bidwell	United States	Record low minimum temperature	-5.0 C (23.0 F)	27 of 100 (Routine)
Lompoc	United States	Record high maximum temperature	25.0 C (77.0 F)	27 of 100 (Routine)
Blairsville Exp STN	United States	Record daily precipitation	41.9 mm (1.6 in)	27 of 100 (Routine)
Eastman 1 W	United States	Record daily precipitation	55.6 mm (2.2 in)	27 of 100 (Routine)
Hinckley 2 SW	United States	Record daily precipitation	37.8 mm (1.5 in)	27 of 100 (Routine)
Madras	United States	Record high minimum temperature	11.1 C (52.0 F)	27 of 100 (Routine)
Richmond Post Office	Australia	Record high maximum temperature	35.8 C (96.4 F)	26 of 100 (Routine)
Jerecuaro	Mexico	Record daily precipitation	34.3 mm (1.4 in)	26 of 100 (Routine)
Taylorsville	United States	Record daily precipitation	71.9 mm (2.8 in)	26 of 100 (Routine)
Bar Harbor 3 NW	United States	Record daily precipitation	39.9 mm (1.6 in)	26 of 100 (Routine)
Old Forge	United States	Record daily precipitation	26.7 mm (1.1 in)	26 of 100 (Routine)

Counts by Type and Timescale

649 records

Records set or tied on 9 May 1978 by type: Highest daily maximum 61, Lowest daily maximum 41, Highest daily minimum 132, Lowest daily minimum 56, Heaviest daily rainfall 347, Heaviest daily snowfall 5, Deepest snow cover 7.

Records on 9 May 1978 by type
Record type	Records
Highest daily maximum	61
Lowest daily maximum	41
Highest daily minimum	132
Lowest daily minimum	56
Heaviest daily rainfall	347
Heaviest daily snowfall	5
Deepest snow cover	7

Records on 9 May 1978 by timescale: all-time 0, monthly 13, daily 636.

How Much Records Were Beaten By

532 broken records

Margins by which the 532 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 230.0. Ties are not counted.

Top 20 by Significance

9 May 1978

Top 20 records on 9 May 1978 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
9 May 1978	Cordele, US	daily rain	89.4 mm (3.5 in)	55.1 mm (2.2 in)	71 years	67 of 100 (Major)
9 May 1978	Talladega, US	daily rain	69.9 mm (2.8 in)	45.3 mm (1.8 in)	36 years	51 of 100 (Notable)
9 May 1978	Montgomery AP, US	monthly rain	132.8 mm (5.2 in)	39.8 mm (1.6 in)	21 years	47 of 100 (Notable)
9 May 1978	Olivedos (Sao Francisco), BR	daily rain	79.0 mm (3.1 in)	56.9 mm (2.2 in)	9 years	46 of 100 (Notable)
9 May 1978	Barra de Santa Rosa, BR	daily rain	42.4 mm (1.7 in)	27.5 mm (1.1 in)	40 years	45 of 100 (Notable)
9 May 1978	Walterboro 1 SW, US	daily rain	41.9 mm (1.6 in)	29.2 mm (1.1 in)	71 years	45 of 100 (Notable)
9 May 1978	Salisbury, US	daily rain	42.4 mm (1.7 in)	14.0 mm (0.6 in)	71 years	41 of 100 (Notable)
9 May 1978	Barra Do Cuiete-Jusante, BR	daily rain	27.8 mm (1.1 in)	27.5 mm (1.1 in)	12 years	40 of 100 (Notable)
9 May 1978	Blackville 3 W, US	daily rain	66.5 mm (2.6 in)	15.7 mm (0.6 in)	71 years	40 of 100 (Notable)
9 May 1978	Baixo Guandu, BR	daily rain	31.0 mm (1.2 in)	21.0 mm (0.8 in)	29 years	39 of 100 (Notable)
9 May 1978	Lordsburg 4 SE, US	monthly low min	-4.4 C (24.1 F)	1.6 C (2.9 F)	66 years	39 of 100 (Notable)
9 May 1978	Georgetown 2 E, US	daily rain	43.2 mm (1.7 in)	16.3 mm (0.6 in)	71 years	39 of 100 (Notable)
9 May 1978	Little Mtn, US	daily rain	47.8 mm (1.9 in)	25.2 mm (1.0 in)	39 years	39 of 100 (Notable)
9 May 1978	Houston Wb City, US	daily high max	33.3 C (91.9 F)	0.5 C (0.9 F)	94 years	38 of 100 (Notable)
9 May 1978	Stillwater, CA	daily rain	35.0 mm (1.4 in)	17.5 mm (0.7 in)	60 years	37 of 100 (Notable)
9 May 1978	Ozark 6 NNW, US	daily rain	47.2 mm (1.9 in)	12.7 mm (0.5 in)	76 years	37 of 100 (Notable)
9 May 1978	Louisville 1 E, US	daily rain	28.4 mm (1.1 in)	6.8 mm (0.27 in)	84 years	37 of 100 (Notable)
9 May 1978	Areia Branca, BR	monthly rain	99.5 mm (3.9 in)	27.1 mm (1.1 in)	4 years	36 of 100 (Notable)
9 May 1978	Itagua, BR	daily rain	46.8 mm (1.8 in)	34.6 mm (1.4 in)	9 years	36 of 100 (Notable)
9 May 1978	San Juan del Rio (Smn), MX	daily rain	27.7 mm (1.1 in)	16.8 mm (0.7 in)	40 years	36 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 1978

Records set or tied on this calendar date in each year from 1793 to 1978. 1978 had 649 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 1978-05-09: 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 50	526
50 to 100	4
100 to 150	0
150 to 200	0
200 to 250	2