Weather Records on 4 May 1977

736 weather records were set or tied worldwide on 4 May 1977. Highest significance: Fargo Hector Intl AP, US.

Key Facts for 4 May 1977

On 4 May 1977, 736 weather records were set or tied at long-record stations worldwide.
320 were record highs and 115 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 17 monthly and 718 daily.
Fargo Hector Intl AP set a monthly record daily precipitation of 102.1 mm (4.0 in) on 4 May 1977.
Across 163 earlier years (1795 to 2026) the same calendar date averaged 429 records.

Record Map

736 stations

736 station records on 4 May 1977 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 4 May 1977: highest significance records shown on the map
Station	Country	Type	Value	Significance
Fargo Hector Intl AP	United States	Record daily precipitation	102.1 mm (4.0 in)	83 of 100 (Exceptional)
Eucla	Australia	Record daily precipitation	75.1 mm (3.0 in)	78 of 100 (Major)
Carlyle	Canada	Record daily precipitation	42.7 mm (1.7 in)	59 of 100 (Notable)
Velva	United States	Record daily precipitation	51.1 mm (2.0 in)	58 of 100 (Notable)
Whitewood	Canada	Record daily precipitation	44.2 mm (1.7 in)	57 of 100 (Notable)
Homestead Exp STN	United States	Record daily precipitation	142.7 mm (5.6 in)	55 of 100 (Notable)
Mt Vernon	United States	Record daily precipitation	53.3 mm (2.1 in)	53 of 100 (Notable)
Winnipeg Richardson Int'l A	Canada	Record daily precipitation	50.8 mm (2.0 in)	52 of 100 (Notable)
Vincennes 4 E	United States	Record daily precipitation	53.8 mm (2.1 in)	52 of 100 (Notable)
Fessenden	United States	Record daily precipitation	45.7 mm (1.8 in)	52 of 100 (Notable)
Beaverlodge Cda	Canada	Record daily precipitation	38.9 mm (1.5 in)	49 of 100 (Notable)
Davidson	Canada	Record daily precipitation	37.6 mm (1.5 in)	48 of 100 (Notable)
Nokomis	Canada	Record daily precipitation	58.4 mm (2.3 in)	48 of 100 (Notable)
Moosomin	Canada	Record daily precipitation	36.3 mm (1.4 in)	47 of 100 (Notable)
Marshall	United States	Record daily precipitation	46.7 mm (1.8 in)	47 of 100 (Notable)
Olivedos (Sao Francisco)	Brazil	Record daily precipitation	90.0 mm (3.5 in)	46 of 100 (Notable)
Acude Piloes	Brazil	Record daily precipitation	83.0 mm (3.3 in)	44 of 100 (Notable)
Fazenda Porcos	Brazil	Record daily precipitation	91.2 mm (3.6 in)	44 of 100 (Notable)
Entrance	Canada	Record daily precipitation	33.8 mm (1.3 in)	43 of 100 (Notable)
Praha-Klementinum	Czech Republic	Record high maximum temperature	28.8 C (83.8 F)	42 of 100 (Notable)
Madison	United States	Record daily precipitation	63.5 mm (2.5 in)	42 of 100 (Notable)
Espirito Santo	Brazil	Record daily precipitation	56.5 mm (2.2 in)	41 of 100 (Notable)
Lumsden	Canada	Record daily precipitation	34.3 mm (1.4 in)	41 of 100 (Notable)
Virden	Canada	Record daily precipitation	29.2 mm (1.1 in)	41 of 100 (Notable)
Rushville	United States	Record daily precipitation	41.4 mm (1.6 in)	41 of 100 (Notable)
Springfield Abraham Lincoln Ca	United States	Record daily precipitation	35.8 mm (1.4 in)	40 of 100 (Notable)
Treherne	Canada	Record daily precipitation	31.0 mm (1.2 in)	39 of 100 (Notable)
Plauen	Germany	Record high maximum temperature	28.0 C (82.4 F)	39 of 100 (Notable)
Sweet Springs	United States	Record daily precipitation	59.2 mm (2.3 in)	39 of 100 (Notable)
Colgate	United States	Record daily precipitation	47.0 mm (1.9 in)	39 of 100 (Notable)
Erick	United States	Record daily precipitation	64.8 mm (2.6 in)	39 of 100 (Notable)
Chamberlain	United States	Record high minimum temperature	17.2 C (63.0 F)	38 of 100 (Notable)
Itapiuna	Brazil	Record daily precipitation	105.2 mm (4.1 in)	37 of 100 (Notable)
Santana Do Matos	Brazil	Record daily precipitation	90.5 mm (3.6 in)	37 of 100 (Notable)
Dilke	Canada	Record daily precipitation	32.0 mm (1.3 in)	37 of 100 (Notable)
Deols Chateauroux Aerodrome de	France	Record low maximum temperature	6.9 C (44.4 F)	37 of 100 (Notable)
Leipzig-Holzhausen	Germany	Record high maximum temperature	28.8 C (83.8 F)	37 of 100 (Notable)
Homestead Exp STN	United States	Record low maximum temperature	23.3 C (73.9 F)	37 of 100 (Notable)
Hickory Flat	United States	Record daily precipitation	57.2 mm (2.3 in)	37 of 100 (Notable)
Alliance	Canada	Record daily precipitation	30.5 mm (1.2 in)	36 of 100 (Notable)
Carrollton	United States	Record daily precipitation	25.9 mm (1.0 in)	36 of 100 (Notable)
Russell	Canada	Record daily precipitation	33.0 mm (1.3 in)	35 of 100 (Notable)
Gorlitz	Germany	Record high maximum temperature	27.7 C (81.9 F)	35 of 100 (Notable)
Visby_Flygplats	Sweden	Record high maximum temperature	20.2 C (68.4 F)	35 of 100 (Notable)
Van Vleet	United States	Record daily precipitation	77.5 mm (3.1 in)	35 of 100 (Notable)
Creighton	United States	Record high minimum temperature	17.2 C (63.0 F)	35 of 100 (Notable)
Stephan 2 NW	United States	Record high minimum temperature	15.0 C (59.0 F)	35 of 100 (Notable)
General Wayne A Downing Intl A	United States	Record daily precipitation	44.5 mm (1.8 in)	35 of 100 (Notable)
Farleigh Co-Op Sugar Mill	Australia	Record daily precipitation	41.6 mm (1.6 in)	34 of 100 (Routine)
Itapage	Brazil	Record daily precipitation	65.5 mm (2.6 in)	34 of 100 (Routine)
Sandheads	India	Record daily precipitation	39.1 mm (1.5 in)	34 of 100 (Routine)
Salzburg	Austria	Record high minimum temperature	14.1 C (57.4 F)	33 of 100 (Routine)
Strasbourg	Canada	Record daily precipitation	29.7 mm (1.2 in)	33 of 100 (Routine)
Cottbus	Germany	Record high maximum temperature	29.3 C (84.7 F)	33 of 100 (Routine)
Mc Ville	United States	Record daily precipitation	39.4 mm (1.6 in)	33 of 100 (Routine)
La Rue	United States	Record daily precipitation	29.5 mm (1.2 in)	33 of 100 (Routine)
Orly	France	Record low maximum temperature	7.6 C (45.7 F)	32 of 100 (Routine)
Berlin-Dahlem	Germany	Record high maximum temperature	28.5 C (83.3 F)	32 of 100 (Routine)
Swannanoa 2 E	United States	Record daily precipitation	39.9 mm (1.6 in)	32 of 100 (Routine)
Center 4SE	United States	Record daily precipitation	29.7 mm (1.2 in)	32 of 100 (Routine)

Counts by Type and Timescale

736 records

Records set or tied on 4 May 1977 by type: Highest daily maximum 142, Lowest daily maximum 55, Highest daily minimum 178, Lowest daily minimum 60, Heaviest daily rainfall 287, Heaviest daily snowfall 8, Deepest snow cover 6.

Records on 4 May 1977 by type
Record type	Records
Highest daily maximum	142
Lowest daily maximum	55
Highest daily minimum	178
Lowest daily minimum	60
Heaviest daily rainfall	287
Heaviest daily snowfall	8
Deepest snow cover	6

Records on 4 May 1977 by timescale: all-time 1, monthly 17, daily 718.

How Much Records Were Beaten By

633 broken records

Margins by which the 633 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 203.0. Ties are not counted.

Top 20 by Significance

4 May 1977

Top 20 records on 4 May 1977 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
4 May 1977	Fargo Hector Intl AP, US	monthly rain	102.1 mm (4.0 in)	54.3 mm (2.1 in)	84 years	83 of 100 (Exceptional)
4 May 1977	Eucla, AU	monthly rain	75.1 mm (3.0 in)	47.2 mm (1.9 in)	61 years	78 of 100 (Major)
4 May 1977	Carlyle, CA	daily rain	42.7 mm (1.7 in)	32.0 mm (1.3 in)	47 years	59 of 100 (Notable)
4 May 1977	Velva, US	daily rain	51.1 mm (2.0 in)	37.9 mm (1.5 in)	46 years	58 of 100 (Notable)
4 May 1977	Whitewood, CA	daily rain	44.2 mm (1.7 in)	33.0 mm (1.3 in)	34 years	57 of 100 (Notable)
4 May 1977	Homestead Exp STN, US	daily rain	142.7 mm (5.6 in)	92.9 mm (3.7 in)	31 years	55 of 100 (Notable)
4 May 1977	Mt Vernon, US	daily rain	53.3 mm (2.1 in)	41.6 mm (1.6 in)	48 years	53 of 100 (Notable)
4 May 1977	Winnipeg Richardson Int'l A, CA	daily rain	50.8 mm (2.0 in)	32.0 mm (1.3 in)	27 years	52 of 100 (Notable)
4 May 1977	Vincennes 4 E, US	daily rain	53.8 mm (2.1 in)	33.7 mm (1.3 in)	60 years	52 of 100 (Notable)
4 May 1977	Fessenden, US	daily rain	45.7 mm (1.8 in)	25.9 mm (1.0 in)	58 years	52 of 100 (Notable)
4 May 1977	Beaverlodge Cda, CA	daily rain	38.9 mm (1.5 in)	29.5 mm (1.2 in)	12 years	49 of 100 (Notable)
4 May 1977	Davidson, CA	daily rain	37.6 mm (1.5 in)	20.3 mm (0.8 in)	34 years	48 of 100 (Notable)
4 May 1977	Nokomis, CA	monthly rain	58.4 mm (2.3 in)	19.5 mm (0.8 in)	22 years	48 of 100 (Notable)
4 May 1977	Moosomin, CA	daily rain	36.3 mm (1.4 in)	27.4 mm (1.1 in)	8 years	47 of 100 (Notable)
4 May 1977	Marshall, US	daily rain	46.7 mm (1.8 in)	26.6 mm (1.0 in)	68 years	47 of 100 (Notable)
4 May 1977	Olivedos (Sao Francisco), BR	monthly rain	90.0 mm (3.5 in)	29.0 mm (1.1 in)	13 years	46 of 100 (Notable)
4 May 1977	Acude Piloes, BR	daily rain	83.0 mm (3.3 in)	49.0 mm (1.9 in)	12 years	44 of 100 (Notable)
4 May 1977	Fazenda Porcos, BR	daily rain	91.2 mm (3.6 in)	69.7 mm (2.7 in)	2 years	44 of 100 (Notable)
4 May 1977	Entrance, CA	daily rain	33.8 mm (1.3 in)	18.8 mm (0.7 in)	34 years	43 of 100 (Notable)
4 May 1977	Praha-Klementinum, CZ	daily high max	28.8 C (83.8 F)	1.3 C (2.3 F)	108 years	42 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 1977

Records set or tied on this calendar date in each year from 1795 to 1977. 1977 had 736 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 1977-05-04: 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	625
50 to 100	7
100 to 150	0
150 to 200	0
200 to 250	1