Weather Records on 8 May 1977

682 weather records were set or tied worldwide on 8 May 1977. Highest significance: Heidelberg Cape (Pol), ZA.

Key Facts for 8 May 1977

On 8 May 1977, 682 weather records were set or tied at long-record stations worldwide.
212 were record highs and 121 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 61 monthly and 621 daily.
Heidelberg Cape (Pol) set a daily record precipitation of 64.0 mm (2.5 in) on 8 May 1977.
Across 163 earlier years (1795 to 2026) the same calendar date averaged 429 records.

Record Map

682 stations

682 station records on 8 May 1977 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 8 May 1977: highest significance records shown on the map
Station	Country	Type	Value	Significance
Heidelberg Cape (Pol)	South Africa	Record daily precipitation	64.0 mm (2.5 in)	76 of 100 (Major)
George Airport	South Africa	Record daily precipitation	87.0 mm (3.4 in)	76 of 100 (Major)
Newhall S Fc32Ce	United States	Record daily precipitation	79.5 mm (3.1 in)	75 of 100 (Major)
Tehachapi	United States	Record daily precipitation	49.5 mm (1.9 in)	74 of 100 (Major)
Winterhoek	South Africa	Record daily precipitation	107.0 mm (4.2 in)	73 of 100 (Major)
Los Angeles Downtown/Usc	United States	Record daily precipitation	51.3 mm (2.0 in)	73 of 100 (Major)
Swellendam (Tnk)	South Africa	Record daily precipitation	87.0 mm (3.4 in)	71 of 100 (Major)
Great Brak River	South Africa	Record daily precipitation	97.0 mm (3.8 in)	68 of 100 (Major)
Rust-En-Vrede	South Africa	Record daily precipitation	83.0 mm (3.3 in)	68 of 100 (Major)
Aberdeen Rd (Sar)	South Africa	Record daily precipitation	80.0 mm (3.1 in)	68 of 100 (Major)
Belleville	Canada	Record daily snowfall	10.6 cm (4.2 in)	67 of 100 (Major)
Downey Fire Dept. Fc107C	United States	Record daily precipitation	49.0 mm (1.9 in)	65 of 100 (Major)
Loerie (Sar)	South Africa	Record daily precipitation	177.0 mm (7.0 in)	63 of 100 (Major)
Klipplaat (Sar)	South Africa	Record daily precipitation	56.5 mm (2.2 in)	63 of 100 (Major)
Bridgeport	United States	Record daily snowfall	10.2 cm (4.0 in)	63 of 100 (Major)
Avalon Pleasure Pier	United States	Record daily precipitation	49.0 mm (1.9 in)	62 of 100 (Major)
Pasadena	United States	Record daily precipitation	38.1 mm (1.5 in)	62 of 100 (Major)
Goldfield	United States	Record daily precipitation	38.6 mm (1.5 in)	62 of 100 (Major)
Sandhoogte (Pur)	South Africa	Record daily precipitation	108.4 mm (4.3 in)	61 of 100 (Major)
Altadena	United States	Record daily precipitation	49.0 mm (1.9 in)	61 of 100 (Major)
Vincent Fs Fc 120	United States	Record daily precipitation	33.8 mm (1.3 in)	61 of 100 (Major)
Barrydale (Pol)	South Africa	Record daily precipitation	115.5 mm (4.5 in)	60 of 100 (Major)
San Gabriel Canyon Ph	United States	Record daily precipitation	39.9 mm (1.6 in)	60 of 100 (Major)
Presa Rodriguez	Mexico	Record daily precipitation	45.7 mm (1.8 in)	59 of 100 (Notable)
Jonkersberg (Bos)	South Africa	Record daily precipitation	73.0 mm (2.9 in)	59 of 100 (Notable)
Big Tujunga Dam Fc46	United States	Record daily precipitation	106.7 mm (4.2 in)	59 of 100 (Notable)
Bouquet Canyon	United States	Record daily precipitation	52.3 mm (2.1 in)	59 of 100 (Notable)
Burbank Valley Pump Plt	United States	Record daily precipitation	58.2 mm (2.3 in)	59 of 100 (Notable)
Los Angeles Intl AP	United States	Record daily precipitation	42.4 mm (1.7 in)	59 of 100 (Notable)
Sandberg	United States	Record daily precipitation	61.0 mm (2.4 in)	59 of 100 (Notable)
Montagu (Pol)	South Africa	Record daily precipitation	52.5 mm (2.1 in)	58 of 100 (Notable)
San Diego Intl AP	United States	Record daily precipitation	37.8 mm (1.5 in)	58 of 100 (Notable)
N Is NAS	United States	Record daily precipitation	25.9 mm (1.0 in)	58 of 100 (Notable)
Swellendam (Bos)	South Africa	Record daily precipitation	100.0 mm (3.9 in)	57 of 100 (Notable)
U C L A	United States	Record daily precipitation	58.9 mm (2.3 in)	57 of 100 (Notable)
Feitoria (Sao Felix)	Brazil	Record daily precipitation	92.6 mm (3.6 in)	56 of 100 (Notable)
Newport Beach Harbor	United States	Record daily precipitation	26.2 mm (1.0 in)	56 of 100 (Notable)
Biesjiesfontein	South Africa	Record daily precipitation	62.0 mm (2.4 in)	55 of 100 (Notable)
Kwepertuin	South Africa	Record daily precipitation	62.0 mm (2.4 in)	54 of 100 (Notable)
Van Staadens (Rsv)	South Africa	Record daily precipitation	136.0 mm (5.4 in)	54 of 100 (Notable)
Sterkstroom (Pol)	South Africa	Record daily precipitation	47.5 mm (1.9 in)	54 of 100 (Notable)
Torrance AP	United States	Record daily precipitation	55.4 mm (2.2 in)	54 of 100 (Notable)
Hankey (Pol)	South Africa	Record daily precipitation	77.5 mm (3.1 in)	53 of 100 (Notable)
Palmdale	United States	Record daily precipitation	27.9 mm (1.1 in)	53 of 100 (Notable)
Big Pines Park Fc83B	United States	Record daily precipitation	35.6 mm (1.4 in)	51 of 100 (Notable)
Serra Grande (Ibitirucu)	Brazil	Record daily precipitation	43.3 mm (1.7 in)	50 of 100 (Notable)
Herold (Pol)	South Africa	Record daily precipitation	97.0 mm (3.8 in)	50 of 100 (Notable)
Loerie (Bos)	South Africa	Record daily precipitation	180.0 mm (7.1 in)	49 of 100 (Notable)
Matjiesrivier (Skl)	South Africa	Record daily precipitation	64.0 mm (2.5 in)	49 of 100 (Notable)
Fig Tree	South Africa	Record daily precipitation	60.0 mm (2.4 in)	49 of 100 (Notable)
Santa Monica Pier	United States	Record daily precipitation	38.9 mm (1.5 in)	49 of 100 (Notable)
Santa Ana Fire STN	United States	Record daily precipitation	27.9 mm (1.1 in)	48 of 100 (Notable)
Grenfell	Canada	Record daily precipitation	40.1 mm (1.6 in)	47 of 100 (Notable)
Lytle Creek Rs	United States	Record daily precipitation	92.2 mm (3.6 in)	47 of 100 (Notable)
San Gabriel Fire Dept	United States	Record daily precipitation	36.3 mm (1.4 in)	47 of 100 (Notable)
San Diego Miramar NAS	United States	Record daily precipitation	38.9 mm (1.5 in)	47 of 100 (Notable)
Glendora Fc 287B	United States	Record daily precipitation	41.4 mm (1.6 in)	46 of 100 (Notable)
Bhubaneswar	India	Record daily precipitation	52.1 mm (2.1 in)	45 of 100 (Notable)
Izeleni (Bos)	South Africa	Record daily precipitation	48.0 mm (1.9 in)	45 of 100 (Notable)
Yorba Linda	United States	Record daily precipitation	35.1 mm (1.4 in)	45 of 100 (Notable)

Counts by Type and Timescale

682 records

Records set or tied on 8 May 1977 by type: Highest daily maximum 77, Lowest daily maximum 78, Highest daily minimum 135, Lowest daily minimum 43, Heaviest daily rainfall 325, Heaviest daily snowfall 22, Deepest snow cover 2.

Records on 8 May 1977 by type
Record type	Records
Highest daily maximum	77
Lowest daily maximum	78
Highest daily minimum	135
Lowest daily minimum	43
Heaviest daily rainfall	325
Heaviest daily snowfall	22
Deepest snow cover	2

Records on 8 May 1977 by timescale: all-time 0, monthly 61, daily 621.

How Much Records Were Beaten By

549 broken records

Margins by which the 549 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 167.7. Ties are not counted.

Top 20 by Significance

8 May 1977

Top 20 records on 8 May 1977 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
8 May 1977	Heidelberg Cape (Pol), ZA	daily rain	64.0 mm (2.5 in)	52.3 mm (2.1 in)	88 years	76 of 100 (Major)
8 May 1977	George Airport, ZA	daily rain	87.0 mm (3.4 in)	57.3 mm (2.3 in)	88 years	76 of 100 (Major)
8 May 1977	Newhall S Fc32Ce, US	monthly rain	79.5 mm (3.1 in)	38.6 mm (1.5 in)	62 years	75 of 100 (Major)
8 May 1977	Tehachapi, US	monthly rain	49.5 mm (1.9 in)	19.0 mm (0.7 in)	61 years	74 of 100 (Major)
8 May 1977	Winterhoek, ZA	monthly rain	107.0 mm (4.2 in)	36.1 mm (1.4 in)	80 years	73 of 100 (Major)
8 May 1977	Los Angeles Downtown/Usc, US	monthly rain	51.3 mm (2.0 in)	25.1 mm (1.0 in)	55 years	73 of 100 (Major)
8 May 1977	Swellendam (Tnk), ZA	daily rain	87.0 mm (3.4 in)	66.7 mm (2.6 in)	76 years	71 of 100 (Major)
8 May 1977	Great Brak River, ZA	monthly rain	97.0 mm (3.8 in)	32.7 mm (1.3 in)	65 years	68 of 100 (Major)
8 May 1977	Rust-En-Vrede, ZA	daily rain	83.0 mm (3.3 in)	55.8 mm (2.2 in)	72 years	68 of 100 (Major)
8 May 1977	Aberdeen Rd (Sar), ZA	monthly rain	80.0 mm (3.1 in)	29.2 mm (1.1 in)	61 years	68 of 100 (Major)
8 May 1977	Belleville, CA	monthly snowfall	10.6 cm (4.2 in)	9.3 cm (3.7 in)	98 years	67 of 100 (Major)
8 May 1977	Downey Fire Dept. Fc107C, US	monthly rain	49.0 mm (1.9 in)	28.4 mm (1.1 in)	27 years	65 of 100 (Major)
8 May 1977	Loerie (Sar), ZA	daily rain	177.0 mm (7.0 in)	164.8 mm (6.5 in)	59 years	63 of 100 (Major)
8 May 1977	Klipplaat (Sar), ZA	daily rain	56.5 mm (2.2 in)	48.1 mm (1.9 in)	56 years	63 of 100 (Major)
8 May 1977	Bridgeport, US	daily snowfall	10.2 cm (4.0 in)	10.2 cm (4.0 in)	72 years	63 of 100 (Major)
8 May 1977	Avalon Pleasure Pier, US	monthly rain	49.0 mm (1.9 in)	23.1 mm (0.9 in)	22 years	62 of 100 (Major)
8 May 1977	Pasadena, US	daily rain	38.1 mm (1.5 in)	32.3 mm (1.3 in)	48 years	62 of 100 (Major)
8 May 1977	Goldfield, US	monthly rain	38.6 mm (1.5 in)	12.7 mm (0.5 in)	63 years	62 of 100 (Major)
8 May 1977	Sandhoogte (Pur), ZA	monthly rain	108.4 mm (4.3 in)	42.4 mm (1.7 in)	22 years	61 of 100 (Major)
8 May 1977	Altadena, US	monthly rain	49.0 mm (1.9 in)	24.4 mm (1.0 in)	22 years	61 of 100 (Major)

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 682 records.

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

Records on 05-08 in each year
Year	Records
1795	2
1806	1
1825	1
1834	1
1845	2
1848	1
1849	1
1851	1
1852	1
1857	1
1858	2
1861	2
1862	1
1863	1
1865	1
1867	4
1868	1
1873	1
1874	3
1876	3
1879	1
1880	1
1882	4
1883	1
1885	1
1886	3
1888	2
1889	1
1890	2
1891	2
1892	2
1893	3
1894	1
1895	1
1896	3
1897	5
1898	2
1900	10
1901	5
1902	5
1903	11
1904	13
1905	17
1906	27
1907	7
1908	14
1909	19
1910	26
1911	34
1912	36
1913	34
1914	71
1915	35
1916	17
1917	108
1918	47
1919	132
1920	62
1921	35
1922	38
1923	510
1924	196
1925	272
1926	191
1927	328
1928	310
1929	194
1930	572
1931	403
1932	283
1933	553
1934	728
1935	78
1936	650
1937	107
1938	425
1939	235
1940	296
1941	271
1942	128
1943	465
1944	258
1945	646
1946	271
1947	1,152
1948	453
1949	361
1950	748
1951	274
1952	794
1953	580
1954	463
1955	411
1956	490
1957	546
1958	440
1959	252
1960	748
1961	556
1962	450
1963	1,105
1964	731
1965	704
1966	522
1967	573
1968	424
1969	542
1970	501
1971	413
1972	509
1973	527
1974	777
1975	555
1976	989
1977	682
1978	676
1979	1,113
1980	722
1981	613
1982	557
1983	638
1984	1,072
1985	591
1986	1,210
1987	1,226
1988	632
1989	1,543
1990	715
1991	710
1992	1,740
1993	892
1994	768
1995	1,340
1996	908
1997	973
1998	1,348
1999	985
2000	1,782
2001	851
2002	1,843
2003	1,420
2004	1,133
2005	685
2006	801
2007	718
2008	595
2009	779
2010	1,079
2011	602
2012	709
2013	686
2014	958
2015	647
2016	752
2017	467
2018	711
2019	723
2020	599
2021	419
2022	908
2023	579
2024	1,015
2025	380
2026	292

Download the Data

Data for records on 1977-05-08: 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 25	476
25 to 50	49
50 to 75	15
75 to 100	5
100 to 125	2
125 to 150	0
150 to 175	2