Weather Records on 17 May 1977

1,078 weather records were set or tied worldwide on 17 May 1977. Highest significance: Yamba Pilot Station, AU.

Key Facts for 17 May 1977

On 17 May 1977, 1,078 weather records were set or tied at long-record stations worldwide.
365 were record highs and 292 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 19 monthly and 1,056 daily.
Yamba Pilot Station set a daily record precipitation of 107.0 mm (4.2 in) on 17 May 1977.
Across 167 earlier years (1802 to 2026) the same calendar date averaged 430 records.

Record Map

1,078 stations

1,078 station records on 17 May 1977 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 May 1977: highest significance records shown on the map
Station	Country	Type	Value	Significance
Yamba Pilot Station	Australia	Record daily precipitation	107.0 mm (4.2 in)	74 of 100 (Major)
Upper Orara (Aurania)	Australia	Record daily precipitation	380.2 mm (15.0 in)	73 of 100 (Major)
Lawrence Post Office	Australia	Record daily precipitation	181.0 mm (7.1 in)	72 of 100 (Major)
Dorrigo Post Office	Australia	Record daily precipitation	266.2 mm (10.5 in)	71 of 100 (Major)
Woolgoolga (Clear Place)	Australia	Record daily precipitation	184.0 mm (7.2 in)	64 of 100 (Major)
Maclean (McLachlan Street)	Australia	Record daily precipitation	170.0 mm (6.7 in)	63 of 100 (Major)
Bowraville Recreation Club	Australia	Record daily precipitation	165.4 mm (6.5 in)	63 of 100 (Major)
Harwood Island (Harwood Sugar	Australia	Record daily precipitation	156.4 mm (6.2 in)	61 of 100 (Major)
Coramba (Glenfiddich)	Australia	Record daily precipitation	186.5 mm (7.3 in)	58 of 100 (Notable)
Macksville Country Club	Australia	Record daily precipitation	146.0 mm (5.7 in)	58 of 100 (Notable)
Ebor (the Racecourse)	Australia	Record daily precipitation	66.8 mm (2.6 in)	58 of 100 (Notable)
Mungindi (Burrenbah)	Australia	Record daily precipitation	50.8 mm (2.0 in)	56 of 100 (Notable)
Nambucca Heads Bowling Club	Australia	Record daily precipitation	191.0 mm (7.5 in)	56 of 100 (Notable)
Urunga (Sunset Place)	Australia	Record daily precipitation	200.0 mm (7.9 in)	55 of 100 (Notable)
Bom Jesus da Lapa	Brazil	Record daily precipitation	48.4 mm (1.9 in)	55 of 100 (Notable)
Fazenda Batalha	Brazil	Record daily precipitation	40.0 mm (1.6 in)	54 of 100 (Notable)
Paramirim	Brazil	Record daily precipitation	59.0 mm (2.3 in)	54 of 100 (Notable)
Towallum (Maxwelton)	Australia	Record daily precipitation	85.4 mm (3.4 in)	53 of 100 (Notable)
Perpignan	France	Record daily precipitation	41.9 mm (1.6 in)	53 of 100 (Notable)
Cumbalum (Fairview)	Australia	Record daily precipitation	85.0 mm (3.3 in)	52 of 100 (Notable)
Acude Ceraima	Brazil	Record daily precipitation	52.4 mm (2.1 in)	52 of 100 (Notable)
Pooncarie (Mulurulu Station)	Australia	Record daily precipitation	39.6 mm (1.6 in)	50 of 100 (Notable)
White Sulphur Springs	United States	Record daily snowfall	12.7 cm (5.0 in)	50 of 100 (Notable)
Cobar (Paddington)	Australia	Record daily precipitation	31.8 mm (1.3 in)	48 of 100 (Notable)
Aneroid	Canada	Record daily precipitation	35.1 mm (1.4 in)	48 of 100 (Notable)
Walnut 4S	United States	Record daily precipitation	120.9 mm (4.8 in)	48 of 100 (Notable)
Raymond Terrace (Wallaroo Stat	Australia	Record daily precipitation	63.2 mm (2.5 in)	47 of 100 (Notable)
Thallon Post Office	Australia	Record daily precipitation	104.0 mm (4.1 in)	46 of 100 (Notable)
Collarenebri (Goondoobluie)	Australia	Record daily precipitation	46.0 mm (1.8 in)	46 of 100 (Notable)
Weemelah (Crinolyn)	Australia	Record daily precipitation	55.8 mm (2.2 in)	46 of 100 (Notable)
Swift Current A	Canada	Record daily precipitation	28.0 mm (1.1 in)	46 of 100 (Notable)
Hysham	United States	Record daily precipitation	40.6 mm (1.6 in)	46 of 100 (Notable)
Cheriton	Australia	Record daily precipitation	51.8 mm (2.0 in)	44 of 100 (Notable)
Mungindi Post Office	Australia	Record daily precipitation	47.0 mm (1.9 in)	44 of 100 (Notable)
Glen Innes (Mt Mitchell Forest	Australia	Record daily precipitation	52.2 mm (2.1 in)	44 of 100 (Notable)
Cadillac	Canada	Record daily precipitation	36.3 mm (1.4 in)	44 of 100 (Notable)
Truckee Rs	United States	Record daily snowfall	10.2 cm (4.0 in)	44 of 100 (Notable)
Ft Scott	United States	Record daily precipitation	88.4 mm (3.5 in)	44 of 100 (Notable)
Driggs	United States	Record daily snowfall	7.6 cm (3.0 in)	43 of 100 (Notable)
Dillon U of Montana Western	United States	Record daily precipitation	39.4 mm (1.6 in)	43 of 100 (Notable)
Weribone	Australia	Record daily precipitation	56.8 mm (2.2 in)	41 of 100 (Notable)
Brushgrove Post Office	Australia	Record daily precipitation	62.4 mm (2.5 in)	41 of 100 (Notable)
Rowena (Waroonga)	Australia	Record daily precipitation	28.0 mm (1.1 in)	40 of 100 (Notable)
Marshall	United States	Record daily precipitation	52.1 mm (2.1 in)	40 of 100 (Notable)
Sao Goncalo	Brazil	Record daily precipitation	27.1 mm (1.1 in)	39 of 100 (Notable)
Claresholm Meadow Creek	Canada	Record daily snowfall	10.2 cm (4.0 in)	39 of 100 (Notable)
Montreal McGill	Canada	Record high maximum temperature	30.0 C (86.0 F)	39 of 100 (Notable)
Darby	United States	Record daily precipitation	33.8 mm (1.3 in)	39 of 100 (Notable)
Snowville	United States	Record low maximum temperature	3.3 C (37.9 F)	39 of 100 (Notable)
Inverell Comparison	Australia	Record high minimum temperature	15.0 C (59.0 F)	38 of 100 (Notable)
Manga	Brazil	Record daily precipitation	35.4 mm (1.4 in)	38 of 100 (Notable)
Palmas de Monte Alto	Brazil	Record daily precipitation	48.2 mm (1.9 in)	38 of 100 (Notable)
Galeana (Smn)	Mexico	Record high minimum temperature	25.0 C (77.0 F)	38 of 100 (Notable)
Kooskia	United States	Record daily precipitation	27.7 mm (1.1 in)	38 of 100 (Notable)
Eastport	United States	Record high minimum temperature	10.0 C (50.0 F)	38 of 100 (Notable)
Caloundra Signal Station	Australia	Record daily precipitation	39.0 mm (1.5 in)	37 of 100 (Notable)
Weemelah Balarang Street	Australia	Record daily precipitation	39.4 mm (1.6 in)	37 of 100 (Notable)
Nindigully	Australia	Record daily precipitation	84.0 mm (3.3 in)	36 of 100 (Notable)
Byron Bay (Jacaranda Drive)	Australia	Record daily precipitation	56.8 mm (2.2 in)	36 of 100 (Notable)
Comboyne Post Office	Australia	Record daily precipitation	106.0 mm (4.2 in)	36 of 100 (Notable)

Counts by Type and Timescale

1,078 records

Records set or tied on 17 May 1977 by type: Highest daily maximum 187, Lowest daily maximum 203, Highest daily minimum 178, Lowest daily minimum 89, Heaviest daily rainfall 383, Heaviest daily snowfall 35, Deepest snow cover 3.

Records on 17 May 1977 by type
Record type	Records
Highest daily maximum	187
Lowest daily maximum	203
Highest daily minimum	178
Lowest daily minimum	89
Heaviest daily rainfall	383
Heaviest daily snowfall	35
Deepest snow cover	3

Records on 17 May 1977 by timescale: all-time 3, monthly 19, daily 1,056.

How Much Records Were Beaten By

871 broken records

Margins by which the 871 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 168.5. Ties are not counted.

Top 20 by Significance

17 May 1977

Top 20 records on 17 May 1977 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 May 1977	Yamba Pilot Station, AU	daily rain	107.0 mm (4.2 in)	69.7 mm (2.7 in)	98 years	74 of 100 (Major)
17 May 1977	Upper Orara (Aurania), AU	monthly rain	380.2 mm (15.0 in)	145.2 mm (5.7 in)	56 years	73 of 100 (Major)
17 May 1977	Lawrence Post Office, AU	daily rain	181.0 mm (7.1 in)	157.1 mm (6.2 in)	76 years	72 of 100 (Major)
17 May 1977	Dorrigo Post Office, AU	monthly rain	266.2 mm (10.5 in)	80.0 mm (3.1 in)	56 years	71 of 100 (Major)
17 May 1977	Woolgoolga (Clear Place), AU	daily rain	184.0 mm (7.2 in)	130.2 mm (5.1 in)	51 years	64 of 100 (Major)
17 May 1977	Maclean (McLachlan Street), AU	daily rain	170.0 mm (6.7 in)	110.8 mm (4.4 in)	51 years	63 of 100 (Major)
17 May 1977	Bowraville Recreation Club, AU	daily rain	165.4 mm (6.5 in)	99.9 mm (3.9 in)	51 years	63 of 100 (Major)
17 May 1977	Harwood Island (Harwood Sugar, AU	daily rain	156.4 mm (6.2 in)	110.7 mm (4.4 in)	51 years	61 of 100 (Major)
17 May 1977	Coramba (Glenfiddich), AU	daily rain	186.5 mm (7.3 in)	161.6 mm (6.4 in)	34 years	58 of 100 (Notable)
17 May 1977	Macksville Country Club, AU	daily rain	146.0 mm (5.7 in)	91.6 mm (3.6 in)	32 years	58 of 100 (Notable)
17 May 1977	Ebor (the Racecourse), AU	daily rain	66.8 mm (2.6 in)	63.8 mm (2.5 in)	44 years	58 of 100 (Notable)
17 May 1977	Mungindi (Burrenbah), AU	daily rain	50.8 mm (2.0 in)	34.3 mm (1.4 in)	63 years	56 of 100 (Notable)
17 May 1977	Nambucca Heads Bowling Club, AU	daily rain	191.0 mm (7.5 in)	150.6 mm (5.9 in)	32 years	56 of 100 (Notable)
17 May 1977	Urunga (Sunset Place), AU	daily rain	200.0 mm (7.9 in)	168.5 mm (6.6 in)	32 years	55 of 100 (Notable)
17 May 1977	Bom Jesus da Lapa, BR	daily rain	48.4 mm (1.9 in)	44.2 mm (1.7 in)	32 years	55 of 100 (Notable)
17 May 1977	Fazenda Batalha, BR	daily rain	40.0 mm (1.6 in)	40.0 mm (1.6 in)	36 years	54 of 100 (Notable)
17 May 1977	Paramirim, BR	daily rain	59.0 mm (2.3 in)	50.6 mm (2.0 in)	32 years	54 of 100 (Notable)
17 May 1977	Towallum (Maxwelton), AU	daily rain	85.4 mm (3.4 in)	70.2 mm (2.8 in)	32 years	53 of 100 (Notable)
17 May 1977	Perpignan, FR	daily rain	41.9 mm (1.6 in)	33.9 mm (1.3 in)	22 years	53 of 100 (Notable)
17 May 1977	Cumbalum (Fairview), AU	daily rain	85.0 mm (3.3 in)	45.9 mm (1.8 in)	76 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

1802 to 1977

Records set or tied on this calendar date in each year from 1802 to 1977. 1977 had 1,078 records.

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

Records on 05-17 in each year
Year	Records
1802	2
1803	1
1808	1
1816	1
1834	1
1837	1
1839	1
1847	2
1848	1
1851	1
1853	1
1855	1
1858	1
1859	1
1861	2
1862	2
1863	2
1864	1
1871	2
1872	2
1873	2
1874	4
1877	1
1878	1
1879	2
1880	1
1881	1
1882	2
1883	3
1885	1
1887	1
1888	2
1889	3
1891	8
1892	4
1893	3
1895	8
1896	2
1897	3
1898	6
1899	7
1900	12
1901	2
1902	3
1903	9
1904	12
1905	10
1906	22
1907	10
1908	5
1909	33
1910	16
1911	30
1912	16
1913	24
1914	24
1915	53
1916	49
1917	18
1918	56
1919	35
1920	46
1921	50
1922	30
1923	95
1924	80
1925	326
1926	133
1927	264
1928	127
1929	168
1930	421
1931	201
1932	288
1933	365
1934	373
1935	341
1936	270
1937	183
1938	340
1939	285
1940	338
1941	408
1942	589
1943	855
1944	521
1945	799
1946	586
1947	249
1948	412
1949	544
1950	371
1951	373
1952	777
1953	441
1954	298
1955	570
1956	1,166
1957	469
1958	331
1959	488
1960	402
1961	291
1962	1,325
1963	368
1964	417
1965	462
1966	489
1967	644
1968	564
1969	638
1970	711
1971	723
1972	610
1973	1,016
1974	1,302
1975	365
1976	426
1977	1,078
1978	872
1979	459
1980	768
1981	940
1982	476
1983	1,326
1984	925
1985	561
1986	921
1987	1,054
1988	1,096
1989	1,307
1990	1,135
1991	1,237
1992	1,025
1993	495
1994	858
1995	1,734
1996	1,706
1997	1,619
1998	1,080
1999	795
2000	825
2001	960
2002	964
2003	1,127
2004	769
2005	784
2006	1,522
2007	742
2008	1,309
2009	1,050
2010	880
2011	1,483
2012	711
2013	739
2014	1,062
2015	824
2016	741
2017	1,302
2018	726
2019	686
2020	496
2021	443
2022	479
2023	385
2024	566
2025	928
2026	745

Download the Data

Data for records on 1977-05-17: 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	798
25 to 50	43
50 to 75	13
75 to 100	6
100 to 125	3
125 to 150	3
150 to 175	5