Weather Records on 4 April 1978

497 weather records were set or tied worldwide on 4 April 1978. Highest significance: Sao Timoteo, BR.

Key Facts for 4 April 1978

On 4 April 1978, 497 weather records were set or tied at long-record stations worldwide.
242 were record highs and 47 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 7 monthly and 490 daily.
Sao Timoteo set a daily record precipitation of 75.0 mm (3.0 in) on 4 April 1978.
Across 155 earlier years (1794 to 2026) the same calendar date averaged 504 records.

Record Map

497 stations

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

Weather records on 4 April 1978: highest significance records shown on the map
Station	Country	Type	Value	Significance
Sao Timoteo	Brazil	Record daily precipitation	75.0 mm (3.0 in)	55 of 100 (Notable)
El Dorado 1 SSW	United States	Record daily precipitation	70.1 mm (2.8 in)	55 of 100 (Notable)
Nkhata Bay	Malawi	Record daily precipitation	167.9 mm (6.6 in)	48 of 100 (Notable)
Miranda Downs Station	Australia	Record daily precipitation	72.0 mm (2.8 in)	47 of 100 (Notable)
Mundo Novo	Brazil	Record daily precipitation	123.1 mm (4.8 in)	45 of 100 (Notable)
Ellenburg Depot	United States	Record snow depth	71.1 cm (28.0 in)	45 of 100 (Notable)
Wistaria	Canada	Record daily snowfall	18.0 cm (7.1 in)	43 of 100 (Notable)
Humacao 2 SSE	Puerto Rico [United States]	Record daily precipitation	50.8 mm (2.0 in)	43 of 100 (Notable)
Santana Do Cariri	Brazil	Record daily precipitation	72.2 mm (2.8 in)	42 of 100 (Notable)
Lowman	United States	Record daily snowfall	5.1 cm (2.0 in)	41 of 100 (Notable)
Marble Hill	United States	Record high minimum temperature	20.0 C (68.0 F)	40 of 100 (Notable)
Jacobina	Brazil	Record daily precipitation	36.6 mm (1.4 in)	39 of 100 (Notable)
Juncos 1 SE	Puerto Rico [United States]	Record daily precipitation	43.9 mm (1.7 in)	37 of 100 (Notable)
Maunabo	Puerto Rico [United States]	Record daily precipitation	67.3 mm (2.6 in)	37 of 100 (Notable)
Emery	United States	Record high minimum temperature	6.7 C (44.1 F)	36 of 100 (Notable)
Tuxcueca	Mexico	Record high maximum temperature	38.9 C (102.0 F)	35 of 100 (Notable)
Elkader 6 SSW	United States	Record daily precipitation	52.3 mm (2.1 in)	35 of 100 (Notable)
Manati 2 E	Puerto Rico [United States]	Record high minimum temperature	22.8 C (73.0 F)	34 of 100 (Routine)
Poplar Bluff	United States	Record high minimum temperature	15.6 C (60.1 F)	34 of 100 (Routine)
Toms River	United States	Record low maximum temperature	6.1 C (43.0 F)	33 of 100 (Routine)
W Chester 2 NW	United States	Record low maximum temperature	3.9 C (39.0 F)	33 of 100 (Routine)
Woodstock	Canada	Record daily snowfall	12.7 cm (5.0 in)	32 of 100 (Routine)
Port Hastings	Canada	Record low minimum temperature	-11.1 C (12.0 F)	32 of 100 (Routine)
Neosho	United States	Record daily precipitation	41.7 mm (1.6 in)	32 of 100 (Routine)
Vinita 2 N	United States	Record daily precipitation	44.5 mm (1.8 in)	32 of 100 (Routine)
Arlington	United States	Record high minimum temperature	10.6 C (51.1 F)	32 of 100 (Routine)
Ripon 5 NE	United States	Record daily precipitation	43.4 mm (1.7 in)	32 of 100 (Routine)
Bowling Green Warren Co AP	United States	Record high minimum temperature	16.7 C (62.1 F)	32 of 100 (Routine)
Cape Tribulation Store	Australia	Record daily precipitation	120.2 mm (4.7 in)	31 of 100 (Routine)
Catemaco	Mexico	Record low minimum temperature	7.8 C (46.0 F)	31 of 100 (Routine)
Lamar 7N	United States	Record daily precipitation	31.8 mm (1.3 in)	31 of 100 (Routine)
South Johnstone Exp STN	Australia	Record daily precipitation	113.0 mm (4.4 in)	30 of 100 (Routine)
Utuado	Puerto Rico [United States]	Record daily precipitation	48.3 mm (1.9 in)	30 of 100 (Routine)
Pocahontas 1	United States	Record high minimum temperature	16.1 C (61.0 F)	30 of 100 (Routine)
Albion	United States	Record high minimum temperature	16.1 C (61.0 F)	30 of 100 (Routine)
1 ENE Fairfield	United States	Record high minimum temperature	17.2 C (63.0 F)	30 of 100 (Routine)
Arkansas City	United States	Record daily precipitation	47.8 mm (1.9 in)	30 of 100 (Routine)
Jackson	United States	Record high minimum temperature	16.1 C (61.0 F)	30 of 100 (Routine)
Pawnee	United States	Record daily precipitation	50.8 mm (2.0 in)	30 of 100 (Routine)
Owensboro 3ENE	United States	Record high minimum temperature	15.6 C (60.1 F)	29 of 100 (Routine)
Alma	United States	Record daily precipitation	35.1 mm (1.4 in)	29 of 100 (Routine)
Circleville	United States	Record high minimum temperature	15.6 C (60.1 F)	29 of 100 (Routine)
Nowata	United States	Record daily precipitation	41.9 mm (1.6 in)	29 of 100 (Routine)
Bolivar Wtr Wks	United States	Record high minimum temperature	16.7 C (62.1 F)	29 of 100 (Routine)
Bowie	United States	Record high maximum temperature	32.8 C (91.0 F)	29 of 100 (Routine)
Paratinga	Brazil	Record daily precipitation	108.4 mm (4.3 in)	28 of 100 (Routine)
Effingham 3SW	United States	Record high minimum temperature	16.7 C (62.1 F)	28 of 100 (Routine)
Sparta 1 W	United States	Record high minimum temperature	16.1 C (61.0 F)	28 of 100 (Routine)
Bellefontaine	United States	Record high minimum temperature	12.8 C (55.0 F)	28 of 100 (Routine)
Hominy	United States	Record daily precipitation	51.6 mm (2.0 in)	28 of 100 (Routine)
Coatesville 1 SW	United States	Record low maximum temperature	2.8 C (37.0 F)	28 of 100 (Routine)
Fayette	United States	Record daily precipitation	39.4 mm (1.6 in)	27 of 100 (Routine)
Beaver Dam	United States	Record high minimum temperature	15.6 C (60.1 F)	27 of 100 (Routine)
Billings	United States	Record daily precipitation	27.9 mm (1.1 in)	27 of 100 (Routine)
St John's A	Canada	Record low minimum temperature	-14.8 C (5.4 F)	26 of 100 (Routine)
Opodepe	Mexico	Record high minimum temperature	21.7 C (71.1 F)	26 of 100 (Routine)
Leon Virgen del Camino	Spain	Record daily precipitation	30.0 mm (1.2 in)	26 of 100 (Routine)
Esengyly	Turkmenistan	Record high minimum temperature	16.5 C (61.7 F)	26 of 100 (Routine)
Plymouth Wwtp	United States	Record daily precipitation	42.2 mm (1.7 in)	26 of 100 (Routine)
Rexton	Canada	Record low minimum temperature	-16.1 C (3.0 F)	25 of 100 (Routine)

Counts by Type and Timescale

497 records

Records set or tied on 4 April 1978 by type: Highest daily maximum 90, Lowest daily maximum 15, Highest daily minimum 152, Lowest daily minimum 32, Heaviest daily rainfall 189, Heaviest daily snowfall 16, Deepest snow cover 3.

Records on 4 April 1978 by type
Record type	Records
Highest daily maximum	90
Lowest daily maximum	15
Highest daily minimum	152
Lowest daily minimum	32
Heaviest daily rainfall	189
Heaviest daily snowfall	16
Deepest snow cover	3

Records on 4 April 1978 by timescale: all-time 0, monthly 7, daily 490.

How Much Records Were Beaten By

393 broken records

Margins by which the 393 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 228.0. Ties are not counted.

Top 20 by Significance

4 April 1978

Top 20 records on 4 April 1978 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
4 April 1978	Sao Timoteo, BR	daily rain	75.0 mm (3.0 in)	61.7 mm (2.4 in)	36 years	55 of 100 (Notable)
4 April 1978	El Dorado 1 SSW, US	monthly rain	70.1 mm (2.8 in)	26.9 mm (1.1 in)	22 years	55 of 100 (Notable)
4 April 1978	Nkhata Bay, MW	daily rain	167.9 mm (6.6 in)	110.7 mm (4.4 in)	3 years	48 of 100 (Notable)
4 April 1978	Miranda Downs Station, AU	daily rain	72.0 mm (2.8 in)	57.8 mm (2.3 in)	15 years	47 of 100 (Notable)
4 April 1978	Mundo Novo, BR	monthly rain	123.1 mm (4.8 in)	23.1 mm (0.9 in)	32 years	45 of 100 (Notable)
4 April 1978	Ellenburg Depot, US	daily snow depth	71.1 cm (28.0 in)	22.8 cm (9.0 in)	78 years	45 of 100 (Notable)
4 April 1978	Wistaria, CA	daily snowfall	18.0 cm (7.1 in)	11.6 cm (4.6 in)	4 years	43 of 100 (Notable)
4 April 1978	Humacao 2 SSE, PR	daily rain	50.8 mm (2.0 in)	27.9 mm (1.1 in)	47 years	43 of 100 (Notable)
4 April 1978	Santana Do Cariri, BR	daily rain	72.2 mm (2.8 in)	35.7 mm (1.4 in)	63 years	42 of 100 (Notable)
4 April 1978	Lowman, US	daily snowfall	5.1 cm (2.0 in)	5.1 cm (2.0 in)	68 years	41 of 100 (Notable)
4 April 1978	Marble Hill, US	daily high min	20.0 C (68.0 F)	4.4 C (7.9 F)	84 years	40 of 100 (Notable)
4 April 1978	Jacobina, BR	daily rain	36.6 mm (1.4 in)	20.1 mm (0.8 in)	60 years	39 of 100 (Notable)
4 April 1978	Juncos 1 SE, PR	daily rain	43.9 mm (1.7 in)	37.3 mm (1.5 in)	28 years	37 of 100 (Notable)
4 April 1978	Maunabo, PR	daily rain	67.3 mm (2.6 in)	26.7 mm (1.1 in)	36 years	37 of 100 (Notable)
4 April 1978	Emery, US	daily high min	6.7 C (44.1 F)	2.8 C (5.0 F)	73 years	36 of 100 (Notable)
4 April 1978	Tuxcueca, MX	daily high max	38.9 C (102.0 F)	6.1 C (11.0 F)	29 years	35 of 100 (Notable)
4 April 1978	Elkader 6 SSW, US	daily rain	52.3 mm (2.1 in)	19.3 mm (0.8 in)	32 years	35 of 100 (Notable)
4 April 1978	Manati 2 E, PR	daily high min	22.8 C (73.0 F)	1.7 C (3.1 F)	59 years	34 of 100 (Routine)
4 April 1978	Poplar Bluff, US	daily high min	15.6 C (60.1 F)	1.2 C (2.2 F)	80 years	34 of 100 (Routine)
4 April 1978	Toms River, US	daily low max	6.1 C (43.0 F)	0.6 C (1.1 F)	81 years	33 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

1794 to 1978

Records set or tied on this calendar date in each year from 1794 to 1978. 1978 had 497 records.

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

Records on 04-04 in each year
Year	Records
1794	1
1808	1
1809	1
1815	2
1819	1
1853	1
1857	1
1873	1
1874	2
1877	2
1878	1
1879	3
1880	2
1881	3
1882	1
1883	1
1884	1
1885	1
1886	2
1887	1
1888	1
1891	1
1892	6
1893	2
1895	2
1896	3
1897	4
1898	7
1899	4
1900	7
1901	12
1902	2
1903	17
1904	6
1905	23
1906	7
1907	9
1908	20
1909	15
1910	48
1911	55
1912	25
1913	31
1914	13
1915	52
1916	65
1917	36
1918	37
1919	27
1920	89
1921	205
1922	39
1923	101
1924	51
1925	126
1926	206
1927	203
1928	625
1929	1,320
1930	86
1931	201
1932	193
1933	167
1934	656
1935	402
1936	714
1937	344
1938	201
1939	243
1940	392
1941	353
1942	537
1943	456
1944	975
1945	806
1946	459
1947	397
1948	202
1949	458
1950	1,044
1951	352
1952	348
1953	332
1954	742
1955	448
1956	426
1957	984
1958	492
1959	524
1960	756
1961	525
1962	308
1963	586
1964	675
1965	443
1966	469
1967	438
1968	640
1969	424
1970	438
1971	560
1972	695
1973	511
1974	1,356
1975	1,981
1976	353
1977	780
1978	497
1979	984
1980	690
1981	1,393
1982	1,251
1983	1,202
1984	762
1985	865
1986	810
1987	2,317
1988	1,119
1989	668
1990	826
1991	957
1992	1,270
1993	733
1994	726
1995	935
1996	699
1997	1,538
1998	931
1999	1,575
2000	1,371
2001	1,040
2002	989
2003	1,055
2004	782
2005	1,070
2006	911
2007	1,009
2008	860
2009	1,068
2010	758
2011	1,155
2012	830
2013	938
2014	705
2015	452
2016	795
2017	603
2018	1,196
2019	407
2020	914
2021	1,341
2022	1,014
2023	2,058
2024	966
2025	1,330
2026	894

Download the Data

Data for records on 1978-04-04: 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	382
50 to 100	8
100 to 150	2
150 to 200	0
200 to 250	1