Weather Records on 3 May 1977

426 weather records were set or tied worldwide on 3 May 1977. Highest significance: Grindstone Island, CA.

Key Facts for 3 May 1977

On 3 May 1977, 426 weather records were set or tied at long-record stations worldwide.
153 were record highs and 60 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 6 monthly and 420 daily.
Grindstone Island set a daily record snowfall of 8.0 cm (3.1 in) on 3 May 1977.
Across 168 earlier years (1795 to 2026) the same calendar date averaged 433 records.

Record Map

426 stations

426 station records on 3 May 1977 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 3 May 1977: highest significance records shown on the map
Station	Country	Type	Value	Significance
Grindstone Island	Canada	Record daily snowfall	8.0 cm (3.1 in)	61 of 100 (Major)
Lebanon	United States	Record daily precipitation	50.8 mm (2.0 in)	61 of 100 (Major)
Haddam	United States	Record daily precipitation	53.3 mm (2.1 in)	57 of 100 (Notable)
Montelimar	France	Record daily precipitation	100.1 mm (3.9 in)	54 of 100 (Notable)
Barcelona/Aeropuerto	Spain	Record daily precipitation	114.7 mm (4.5 in)	52 of 100 (Notable)
Sao Luiz Do Quitunde	Brazil	Record daily precipitation	117.4 mm (4.6 in)	49 of 100 (Notable)
Senatobia	United States	Record daily precipitation	83.6 mm (3.3 in)	47 of 100 (Notable)
Acopiara	Brazil	Record daily precipitation	61.0 mm (2.4 in)	45 of 100 (Notable)
Henderson 8 SSW	United States	Record daily precipitation	53.3 mm (2.1 in)	44 of 100 (Notable)
Nelson	United States	Record daily precipitation	40.1 mm (1.6 in)	41 of 100 (Notable)
Vazantes	Brazil	Record daily precipitation	76.0 mm (3.0 in)	39 of 100 (Notable)
Sao Bento Do Una	Brazil	Record daily precipitation	40.0 mm (1.6 in)	39 of 100 (Notable)
Marseilles-Marignane	France	Record daily precipitation	51.0 mm (2.0 in)	39 of 100 (Notable)
Fairbury 7S	United States	Record daily precipitation	52.1 mm (2.1 in)	38 of 100 (Notable)
Bertrand	United States	Record daily precipitation	45.0 mm (1.8 in)	37 of 100 (Notable)
Sao Vicente (Luiza)	Brazil	Record daily precipitation	101.2 mm (4.0 in)	36 of 100 (Notable)
Montpellier-Aeroport	France	Record daily precipitation	52.0 mm (2.0 in)	36 of 100 (Notable)
Guerrero (Smn)	Mexico	Record high minimum temperature	10.6 C (51.1 F)	36 of 100 (Notable)
Acude Sao Vicente	Brazil	Record daily precipitation	70.0 mm (2.8 in)	35 of 100 (Notable)
Galeana (Smn)	Mexico	Record high minimum temperature	20.0 C (68.0 F)	35 of 100 (Notable)
Piaxtla	Mexico	Record low minimum temperature	11.7 C (53.1 F)	35 of 100 (Notable)
Rawsonville (Pol)	South Africa	Record daily precipitation	66.0 mm (2.6 in)	35 of 100 (Notable)
Harlan Co Lake	United States	Record daily precipitation	35.6 mm (1.4 in)	35 of 100 (Notable)
Castelo Do Piaui (Marvao)	Brazil	Record daily precipitation	42.0 mm (1.7 in)	34 of 100 (Routine)
Graca	Brazil	Record daily precipitation	90.4 mm (3.6 in)	33 of 100 (Routine)
Aratuba	Brazil	Record daily precipitation	78.4 mm (3.1 in)	33 of 100 (Routine)
Joao Dias	Brazil	Record daily precipitation	87.1 mm (3.4 in)	33 of 100 (Routine)
Swan River	Canada	Record high minimum temperature	11.7 C (53.1 F)	33 of 100 (Routine)
Lyon - St Exupery	France	Record daily precipitation	44.4 mm (1.7 in)	33 of 100 (Routine)
Velikie Luki	Russia	Record high minimum temperature	13.0 C (55.4 F)	33 of 100 (Routine)
Bogoroditskoye-Fenino	Russia	Record high maximum temperature	26.7 C (80.1 F)	33 of 100 (Routine)
Leroy 5 WSW	United States	Record high minimum temperature	8.3 C (46.9 F)	33 of 100 (Routine)
Byhalia	United States	Record daily precipitation	79.0 mm (3.1 in)	33 of 100 (Routine)
Pascagoula 3 NE	United States	Record daily precipitation	63.5 mm (2.5 in)	33 of 100 (Routine)
Bruning	United States	Record daily precipitation	56.6 mm (2.2 in)	33 of 100 (Routine)
Eustis 2 NW	United States	Record daily precipitation	29.0 mm (1.1 in)	32 of 100 (Routine)
St George	United States	Record high minimum temperature	15.6 C (60.1 F)	32 of 100 (Routine)
Cypress River	Canada	Record daily precipitation	36.6 mm (1.4 in)	31 of 100 (Routine)
Granja	Brazil	Record daily precipitation	80.4 mm (3.2 in)	30 of 100 (Routine)
Taboleiro Grande	Brazil	Record daily precipitation	70.0 mm (2.8 in)	30 of 100 (Routine)
Timbauba	Brazil	Record daily precipitation	78.8 mm (3.1 in)	30 of 100 (Routine)
Perpignan	France	Record low maximum temperature	11.8 C (53.2 F)	30 of 100 (Routine)
Barcelona -Fabra Observatory	Spain	Record daily precipitation	81.0 mm (3.2 in)	30 of 100 (Routine)
Smith Ctr	United States	Record daily precipitation	43.7 mm (1.7 in)	30 of 100 (Routine)
Riverside 7 SSW	United States	Record low maximum temperature	13.3 C (55.9 F)	30 of 100 (Routine)
Ripley	United States	Record daily precipitation	45.7 mm (1.8 in)	30 of 100 (Routine)
Waialua 847	United States	Record low minimum temperature	14.4 C (57.9 F)	30 of 100 (Routine)
Lagoa da Canoa	Brazil	Record daily precipitation	71.0 mm (2.8 in)	29 of 100 (Routine)
Inukjuak Ua	Canada	Record daily snowfall	10.0 cm (3.9 in)	29 of 100 (Routine)
Cheviot Fells	South Africa	Record daily precipitation	35.0 mm (1.4 in)	29 of 100 (Routine)
Cambridge	United States	Record daily precipitation	38.9 mm (1.5 in)	29 of 100 (Routine)
Usina Rio Dos Campos	Brazil	Record daily precipitation	61.2 mm (2.4 in)	28 of 100 (Routine)
Pacoti	Brazil	Record daily precipitation	56.3 mm (2.2 in)	28 of 100 (Routine)
Clyde A	Canada	Record daily snowfall	8.1 cm (3.2 in)	28 of 100 (Routine)
Swan River	Canada	Record high maximum temperature	27.8 C (82.0 F)	28 of 100 (Routine)
San Francisco Tlalcilalcalpan	Mexico	Record high minimum temperature	13.9 C (57.0 F)	28 of 100 (Routine)
Kvikkjokk-Arrenjarka	Sweden	Record snow depth	95.0 cm (37.4 in)	28 of 100 (Routine)
Poltava	Ukraine	Record high maximum temperature	27.4 C (81.3 F)	28 of 100 (Routine)
Hebron	United States	Record daily precipitation	34.8 mm (1.4 in)	28 of 100 (Routine)
Pacific Heights	Australia	Record daily precipitation	26.0 mm (1.0 in)	27 of 100 (Routine)

Counts by Type and Timescale

426 records

Records set or tied on 3 May 1977 by type: Highest daily maximum 57, Lowest daily maximum 27, Highest daily minimum 96, Lowest daily minimum 33, Heaviest daily rainfall 203, Heaviest daily snowfall 6, Deepest snow cover 4.

Records on 3 May 1977 by type
Record type	Records
Highest daily maximum	57
Lowest daily maximum	27
Highest daily minimum	96
Lowest daily minimum	33
Heaviest daily rainfall	203
Heaviest daily snowfall	6
Deepest snow cover	4

Records on 3 May 1977 by timescale: all-time 0, monthly 6, daily 420.

How Much Records Were Beaten By

380 broken records

Margins by which the 380 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 280.0. Ties are not counted.

Top 20 by Significance

3 May 1977

Top 20 records on 3 May 1977 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
3 May 1977	Grindstone Island, CA	daily snowfall	8.0 cm (3.1 in)	8.0 cm (3.1 in)	85 years	61 of 100 (Major)
3 May 1977	Lebanon, US	daily rain	50.8 mm (2.0 in)	35.6 mm (1.4 in)	78 years	61 of 100 (Major)
3 May 1977	Haddam, US	daily rain	53.3 mm (2.1 in)	45.9 mm (1.8 in)	54 years	57 of 100 (Notable)
3 May 1977	Montelimar, FR	daily rain	100.1 mm (3.9 in)	65.4 mm (2.6 in)	30 years	54 of 100 (Notable)
3 May 1977	Barcelona/Aeropuerto, ES	daily rain	114.7 mm (4.5 in)	106.2 mm (4.2 in)	24 years	52 of 100 (Notable)
3 May 1977	Sao Luiz Do Quitunde, BR	daily rain	117.4 mm (4.6 in)	68.1 mm (2.7 in)	32 years	49 of 100 (Notable)
3 May 1977	Senatobia, US	daily rain	83.6 mm (3.3 in)	55.9 mm (2.2 in)	20 years	47 of 100 (Notable)
3 May 1977	Acopiara, BR	daily rain	61.0 mm (2.4 in)	41.8 mm (1.6 in)	56 years	45 of 100 (Notable)
3 May 1977	Henderson 8 SSW, US	daily rain	53.3 mm (2.1 in)	24.1 mm (0.9 in)	55 years	44 of 100 (Notable)
3 May 1977	Nelson, US	daily rain	40.1 mm (1.6 in)	17.2 mm (0.7 in)	64 years	41 of 100 (Notable)
3 May 1977	Vazantes, BR	daily rain	76.0 mm (3.0 in)	32.5 mm (1.3 in)	38 years	39 of 100 (Notable)
3 May 1977	Sao Bento Do Una, BR	daily rain	40.0 mm (1.6 in)	21.7 mm (0.9 in)	36 years	39 of 100 (Notable)
3 May 1977	Marseilles-Marignane, FR	daily rain	51.0 mm (2.0 in)	16.8 mm (0.7 in)	51 years	39 of 100 (Notable)
3 May 1977	Fairbury 7S, US	daily rain	52.1 mm (2.1 in)	8.2 mm (0.32 in)	80 years	38 of 100 (Notable)
3 May 1977	Bertrand, US	daily rain	45.0 mm (1.8 in)	15.0 mm (0.6 in)	63 years	37 of 100 (Notable)
3 May 1977	Sao Vicente (Luiza), BR	monthly rain	101.2 mm (4.0 in)	20.2 mm (0.8 in)	24 years	36 of 100 (Notable)
3 May 1977	Montpellier-Aeroport, FR	daily rain	52.0 mm (2.0 in)	37.1 mm (1.5 in)	3 years	36 of 100 (Notable)
3 May 1977	Guerrero (Smn), MX	daily high min	10.6 C (51.1 F)	2.8 C (5.0 F)	72 years	36 of 100 (Notable)
3 May 1977	Acude Sao Vicente, BR	daily rain	70.0 mm (2.8 in)	23.0 mm (0.9 in)	52 years	35 of 100 (Notable)
3 May 1977	Galeana (Smn), MX	daily high min	20.0 C (68.0 F)	5.0 C (9.0 F)	48 years	35 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 426 records.

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

Records on 05-03 in each year
Year	Records
1795	1
1796	1
1799	1
1820	1
1832	1
1836	2
1837	1
1845	1
1849	1
1850	5
1851	2
1852	1
1855	1
1861	1
1864	2
1866	1
1868	1
1869	1
1870	1
1871	1
1873	1
1874	1
1875	1
1877	1
1878	4
1879	2
1881	1
1883	1
1884	1
1885	1
1886	3
1887	3
1888	1
1889	3
1891	2
1892	4
1893	1
1894	4
1896	2
1897	3
1898	5
1899	3
1900	2
1901	4
1902	5
1903	7
1904	7
1905	23
1906	10
1907	25
1908	8
1909	22
1910	17
1911	31
1912	17
1913	125
1914	10
1915	28
1916	52
1917	36
1918	28
1919	77
1920	37
1921	42
1922	292
1923	69
1924	55
1925	126
1926	250
1927	78
1928	255
1929	329
1930	279
1931	141
1932	136
1933	376
1934	353
1935	644
1936	356
1937	240
1938	527
1939	331
1940	550
1941	456
1942	1,161
1943	417
1944	728
1945	486
1946	353
1947	879
1948	919
1949	761
1950	854
1951	336
1952	447
1953	373
1954	1,210
1955	811
1956	590
1957	292
1958	485
1959	817
1960	280
1961	389
1962	243
1963	360
1964	908
1965	372
1966	850
1967	1,122
1968	324
1969	404
1970	464
1971	600
1972	380
1973	486
1974	323
1975	475
1976	760
1977	426
1978	1,046
1979	1,217
1980	573
1981	898
1982	564
1983	1,768
1984	807
1985	1,152
1986	965
1987	1,122
1988	782
1989	563
1990	1,715
1991	987
1992	792
1993	824
1994	703
1995	1,050
1996	1,058
1997	933
1998	910
1999	872
2000	1,056
2001	1,541
2002	1,312
2003	934
2004	1,562
2005	1,570
2006	633
2007	693
2008	981
2009	650
2010	1,565
2011	970
2012	1,318
2013	1,562
2014	553
2015	466
2016	505
2017	458
2018	1,004
2019	562
2020	506
2021	491
2022	570
2023	846
2024	627
2025	475
2026	879

Download the Data

Data for records on 1977-05-03: 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	370
50 to 100	7
100 to 150	2
150 to 200	0
200 to 250	0
250 to 300	1