Weather Records on 4 May 1978

1,016 weather records were set or tied worldwide on 4 May 1978. Highest significance: Boobyalla, AU.

Key Facts for 4 May 1978

On 4 May 1978, 1,016 weather records were set or tied at long-record stations worldwide.
77 were record highs and 447 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 124 monthly and 890 daily.
Boobyalla set an all-time record daily precipitation of 176.4 mm (6.9 in) on 4 May 1978.
Across 163 earlier years (1795 to 2026) the same calendar date averaged 427 records.

Record Map

1,016 stations

1,016 station records on 4 May 1978 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 4 May 1978: highest significance records shown on the map
Station	Country	Type	Value	Significance
Boobyalla	Australia	Record daily precipitation	176.4 mm (6.9 in)	83 of 100 (Exceptional)
Casper 2 E	United States	Record daily snowfall	20.6 cm (8.1 in)	66 of 100 (Major)
Milstead	United States	Record daily precipitation	124.5 mm (4.9 in)	64 of 100 (Major)
Bom Jesus da Lapa	Brazil	Record daily precipitation	52.2 mm (2.1 in)	63 of 100 (Major)
Moorcroft 3S	United States	Record daily snowfall	33.0 cm (13.0 in)	60 of 100 (Major)
Fingal (Legge Street)	Australia	Record daily precipitation	75.6 mm (3.0 in)	59 of 100 (Notable)
Cape Barren Island (Cape Barre	Australia	Record daily precipitation	79.0 mm (3.1 in)	59 of 100 (Notable)
Evergreen	United States	Record daily precipitation	80.0 mm (3.1 in)	58 of 100 (Notable)
Swansea Post Office	Australia	Record daily precipitation	59.4 mm (2.3 in)	57 of 100 (Notable)
Reserve	United States	Record daily precipitation	120.4 mm (4.7 in)	57 of 100 (Notable)
Colony	United States	Record daily precipitation	35.6 mm (1.4 in)	56 of 100 (Notable)
Ormley	Australia	Record daily precipitation	48.8 mm (1.9 in)	55 of 100 (Notable)
Santa Terezinha	Brazil	Record daily precipitation	49.0 mm (1.9 in)	55 of 100 (Notable)
Maria Island (Darlington)	Australia	Record daily precipitation	77.7 mm (3.1 in)	54 of 100 (Notable)
Swansea (Kelvedon)	Australia	Record daily precipitation	70.0 mm (2.8 in)	54 of 100 (Notable)
Little Swanport (Lisdillon)	Australia	Record daily precipitation	53.6 mm (2.1 in)	54 of 100 (Notable)
Fleming	United States	Record daily precipitation	69.9 mm (2.8 in)	54 of 100 (Notable)
Jutai (Jatoba de Sta.Barbara)	Brazil	Record daily precipitation	47.0 mm (1.9 in)	53 of 100 (Notable)
Swansea (the Grange)	Australia	Record daily precipitation	77.8 mm (3.1 in)	52 of 100 (Notable)
Andalusia 3 W	United States	Record daily precipitation	135.9 mm (5.4 in)	52 of 100 (Notable)
Lewis Hill (St Pauls River)	Australia	Record daily precipitation	70.0 mm (2.8 in)	51 of 100 (Notable)
Ia?U	Brazil	Record daily precipitation	39.6 mm (1.6 in)	51 of 100 (Notable)
Nikolo-Poloma	Russia	Record daily precipitation	29.7 mm (1.2 in)	49 of 100 (Notable)
Fairhope 2 NE	United States	Record daily precipitation	134.9 mm (5.3 in)	49 of 100 (Notable)
Palatka	United States	Record daily precipitation	78.0 mm (3.1 in)	49 of 100 (Notable)
Missao Velha	Brazil	Record daily precipitation	83.8 mm (3.3 in)	48 of 100 (Notable)
Troy	United States	Record daily precipitation	78.7 mm (3.1 in)	48 of 100 (Notable)
Malhada Real	Brazil	Record daily precipitation	49.0 mm (1.9 in)	47 of 100 (Notable)
Caryville	United States	Record daily precipitation	86.4 mm (3.4 in)	47 of 100 (Notable)
Blakely	United States	Record daily precipitation	58.9 mm (2.3 in)	47 of 100 (Notable)
Ft Gaines	United States	Record daily precipitation	64.5 mm (2.5 in)	47 of 100 (Notable)
Ross (Macquarie River)	Australia	Record daily precipitation	26.8 mm (1.1 in)	46 of 100 (Notable)
Glen St Mary 1 W	United States	Record daily precipitation	132.8 mm (5.2 in)	46 of 100 (Notable)
Jacksonville NAS	United States	Record daily precipitation	84.3 mm (3.3 in)	46 of 100 (Notable)
Ribeira Do Pombal (Pombal)	Brazil	Record daily precipitation	50.2 mm (2.0 in)	45 of 100 (Notable)
Jacksonville Beach	United States	Record daily precipitation	108.0 mm (4.3 in)	45 of 100 (Notable)
Saint Leo	United States	Record daily precipitation	81.3 mm (3.2 in)	45 of 100 (Notable)
Fitzgerald	United States	Record daily precipitation	53.1 mm (2.1 in)	45 of 100 (Notable)
Jacksonville	United States	Record daily precipitation	106.9 mm (4.2 in)	45 of 100 (Notable)
Solomons	United States	Record daily precipitation	50.0 mm (2.0 in)	44 of 100 (Notable)
Pascagoula 3 NE	United States	Record daily precipitation	127.0 mm (5.0 in)	44 of 100 (Notable)
Lynchburg Rgnl AP	United States	Record daily precipitation	56.1 mm (2.2 in)	44 of 100 (Notable)
Apslawn	Australia	Record daily precipitation	55.0 mm (2.2 in)	43 of 100 (Notable)
Orford South	Australia	Record daily precipitation	34.0 mm (1.3 in)	43 of 100 (Notable)
Ouray	United States	Record daily snowfall	5.8 cm (2.3 in)	43 of 100 (Notable)
Niceville	United States	Record daily precipitation	94.5 mm (3.7 in)	43 of 100 (Notable)
Mattoon	United States	Record daily precipitation	27.9 mm (1.1 in)	43 of 100 (Notable)
Moorina (Frome Dam)	Australia	Record daily precipitation	87.6 mm (3.4 in)	42 of 100 (Notable)
Levendale	Australia	Record daily precipitation	27.6 mm (1.1 in)	42 of 100 (Notable)
Tot-Ma	Russia	Record daily precipitation	27.7 mm (1.1 in)	42 of 100 (Notable)
Calhoun 2 N	United States	Record low maximum temperature	12.8 C (55.0 F)	42 of 100 (Notable)
Plain Dealing	United States	Record low maximum temperature	11.7 C (53.1 F)	42 of 100 (Notable)
Ruston la Tech	United States	Record low maximum temperature	12.8 C (55.0 F)	42 of 100 (Notable)
Liberty	United States	Record low maximum temperature	15.6 C (60.1 F)	42 of 100 (Notable)
Moorcroft 3S	United States	Record daily precipitation	35.1 mm (1.4 in)	42 of 100 (Notable)
Highland Home	United States	Record daily precipitation	113.3 mm (4.5 in)	41 of 100 (Notable)
Warren 2 ENE	United States	Record low maximum temperature	12.8 C (55.0 F)	41 of 100 (Notable)
Vanceburg	United States	Record daily precipitation	38.1 mm (1.5 in)	41 of 100 (Notable)
Marcelino Vieira (Panatis)	Brazil	Record daily precipitation	85.0 mm (3.3 in)	40 of 100 (Notable)
Brewton 3 SSE	United States	Record daily precipitation	93.5 mm (3.7 in)	40 of 100 (Notable)

Counts by Type and Timescale

1,016 records

Records set or tied on 4 May 1978 by type: Highest daily maximum 26, Lowest daily maximum 282, Highest daily minimum 51, Lowest daily minimum 165, Heaviest daily rainfall 443, Heaviest daily snowfall 33, Deepest snow cover 16.

Records on 4 May 1978 by type
Record type	Records
Highest daily maximum	26
Lowest daily maximum	282
Highest daily minimum	51
Lowest daily minimum	165
Heaviest daily rainfall	443
Heaviest daily snowfall	33
Deepest snow cover	16

Records on 4 May 1978 by timescale: all-time 2, monthly 124, daily 890.

How Much Records Were Beaten By

833 broken records

Margins by which the 833 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 206.0. Ties are not counted.

Top 20 by Significance

4 May 1978

Top 20 records on 4 May 1978 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
4 May 1978	Boobyalla, AU	all-time rain	176.4 mm (6.9 in)	29.6 mm (1.2 in)	49 years	83 of 100 (Exceptional)
4 May 1978	Casper 2 E, US	daily snowfall	20.6 cm (8.1 in)	20.6 cm (8.1 in)	64 years	66 of 100 (Major)
4 May 1978	Milstead, US	monthly rain	124.5 mm (4.9 in)	51.6 mm (2.0 in)	31 years	64 of 100 (Major)
4 May 1978	Bom Jesus da Lapa, BR	daily rain	52.2 mm (2.1 in)	46.8 mm (1.8 in)	59 years	63 of 100 (Major)
4 May 1978	Moorcroft 3S, US	monthly snowfall	33.0 cm (13.0 in)	17.8 cm (7.0 in)	28 years	60 of 100 (Major)
4 May 1978	Fingal (Legge Street), AU	daily rain	75.6 mm (3.0 in)	66.5 mm (2.6 in)	36 years	59 of 100 (Notable)
4 May 1978	Cape Barren Island (Cape Barre, AU	monthly rain	79.0 mm (3.1 in)	29.0 mm (1.1 in)	6 years	59 of 100 (Notable)
4 May 1978	Evergreen, US	daily rain	80.0 mm (3.1 in)	50.3 mm (2.0 in)	72 years	58 of 100 (Notable)
4 May 1978	Swansea Post Office, AU	daily rain	59.4 mm (2.3 in)	43.7 mm (1.7 in)	28 years	57 of 100 (Notable)
4 May 1978	Reserve, US	daily rain	120.4 mm (4.7 in)	66.6 mm (2.6 in)	65 years	57 of 100 (Notable)
4 May 1978	Colony, US	daily rain	35.6 mm (1.4 in)	25.4 mm (1.0 in)	59 years	56 of 100 (Notable)
4 May 1978	Ormley, AU	daily rain	48.8 mm (1.9 in)	35.3 mm (1.4 in)	20 years	55 of 100 (Notable)
4 May 1978	Santa Terezinha, BR	monthly rain	49.0 mm (1.9 in)	23.6 mm (0.9 in)	3 years	55 of 100 (Notable)
4 May 1978	Maria Island (Darlington), AU	daily rain	77.7 mm (3.1 in)	67.3 mm (2.6 in)	29 years	54 of 100 (Notable)
4 May 1978	Swansea (Kelvedon), AU	daily rain	70.0 mm (2.8 in)	55.5 mm (2.2 in)	28 years	54 of 100 (Notable)
4 May 1978	Little Swanport (Lisdillon), AU	daily rain	53.6 mm (2.1 in)	41.9 mm (1.6 in)	28 years	54 of 100 (Notable)
4 May 1978	Fleming, US	daily rain	69.9 mm (2.8 in)	49.6 mm (2.0 in)	72 years	54 of 100 (Notable)
4 May 1978	Jutai (Jatoba de Sta.Barbara), BR	daily rain	47.0 mm (1.9 in)	33.6 mm (1.3 in)	40 years	53 of 100 (Notable)
4 May 1978	Swansea (the Grange), AU	daily rain	77.8 mm (3.1 in)	63.8 mm (2.5 in)	29 years	52 of 100 (Notable)
4 May 1978	Andalusia 3 W, US	daily rain	135.9 mm (5.4 in)	87.6 mm (3.4 in)	21 years	52 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

1795 to 1978

Records set or tied on this calendar date in each year from 1795 to 1978. 1978 had 1,016 records.

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

Records on 05-04 in each year
Year	Records
1795	1
1796	1
1820	1
1836	2
1840	1
1847	1
1850	2
1851	2
1852	1
1856	3
1858	1
1859	1
1861	2
1862	1
1864	3
1865	2
1868	3
1869	1
1870	2
1875	1
1877	2
1878	1
1879	1
1880	1
1882	1
1885	1
1886	1
1888	1
1889	4
1890	1
1892	4
1893	3
1894	6
1895	3
1896	3
1897	2
1898	2
1899	2
1900	2
1902	5
1903	8
1904	8
1905	19
1906	5
1907	37
1908	18
1909	13
1910	14
1911	37
1912	12
1913	63
1914	21
1915	75
1916	57
1917	60
1918	30
1919	69
1920	43
1921	62
1922	283
1923	82
1924	88
1925	80
1926	230
1927	112
1928	205
1929	177
1930	269
1931	169
1932	104
1933	274
1934	456
1935	518
1936	313
1937	230
1938	445
1939	295
1940	602
1941	436
1942	820
1943	358
1944	872
1945	654
1946	463
1947	649
1948	578
1949	1,130
1950	953
1951	292
1952	698
1953	389
1954	1,045
1955	471
1956	433
1957	433
1958	414
1959	613
1960	443
1961	466
1962	265
1963	313
1964	570
1965	433
1966	1,113
1967	928
1968	304
1969	377
1970	454
1971	810
1972	364
1973	313
1974	367
1975	683
1976	554
1977	736
1978	1,016
1979	1,529
1980	511
1981	667
1982	591
1983	539
1984	885
1985	821
1986	1,128
1987	1,004
1988	591
1989	743
1990	1,461
1991	1,088
1992	933
1993	791
1994	821
1995	974
1996	1,298
1997	962
1998	898
1999	1,167
2000	1,398
2001	1,345
2002	1,343
2003	1,158
2004	1,341
2005	1,152
2006	650
2007	699
2008	624
2009	727
2010	999
2011	1,023
2012	1,343
2013	1,447
2014	602
2015	622
2016	463
2017	669
2018	972
2019	574
2020	504
2021	616
2022	470
2023	681
2024	885
2025	456
2026	554

Download the Data

Data for records on 1978-05-04: 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	787
50 to 100	33
100 to 150	8
150 to 200	3
200 to 250	2