Weather Records on 30 May 1977

444 weather records were set or tied worldwide on 30 May 1977. Highest significance: Izium, UA.

Key Facts for 30 May 1977

On 30 May 1977, 444 weather records were set or tied at long-record stations worldwide.
141 were record highs and 131 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 15 monthly and 429 daily.
Izium set a daily record precipitation of 33.2 mm (1.3 in) on 30 May 1977.
Across 165 earlier years (1818 to 2026) the same calendar date averaged 439 records.

Record Map

444 stations

444 station records on 30 May 1977 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 30 May 1977: highest significance records shown on the map
Station	Country	Type	Value	Significance
Izium	Ukraine	Record daily precipitation	33.2 mm (1.3 in)	55 of 100 (Notable)
Lake Leake (Kooeeyong)	Australia	Record daily precipitation	41.2 mm (1.6 in)	51 of 100 (Notable)
Crookwell Post Office	Australia	Record daily precipitation	69.6 mm (2.7 in)	51 of 100 (Notable)
Yalgogrin North (Roloma)	Australia	Record daily precipitation	25.0 mm (1.0 in)	50 of 100 (Notable)
Manildra (George St)	Australia	Record daily precipitation	84.0 mm (3.3 in)	48 of 100 (Notable)
Pavlograd	Ukraine	Record daily precipitation	29.1 mm (1.1 in)	48 of 100 (Notable)
Moss Vale (Hoskins Street)	Australia	Record daily precipitation	55.0 mm (2.2 in)	47 of 100 (Notable)
Chilo Meldahl Locks & Dam	United States	Record daily precipitation	76.2 mm (3.0 in)	47 of 100 (Notable)
Tepacaltepec	Mexico	Record daily precipitation	39.9 mm (1.6 in)	46 of 100 (Notable)
Mittagong (Beatrice Street)	Australia	Record daily precipitation	35.8 mm (1.4 in)	45 of 100 (Notable)
Gillespie	Australia	Record daily precipitation	31.2 mm (1.2 in)	42 of 100 (Notable)
Stewarts Brook Composite	Australia	Record daily precipitation	28.0 mm (1.1 in)	42 of 100 (Notable)
Mendooran Post Office	Australia	Record daily precipitation	37.0 mm (1.5 in)	42 of 100 (Notable)
Galeana (Smn)	Mexico	Record high minimum temperature	27.8 C (82.0 F)	42 of 100 (Notable)
Caledonia	United States	Record daily precipitation	29.0 mm (1.1 in)	42 of 100 (Notable)
Morris W Cntrl Rsch & Outreach	United States	Record daily precipitation	64.0 mm (2.5 in)	42 of 100 (Notable)
Bannister Station	Australia	Record daily precipitation	53.1 mm (2.1 in)	41 of 100 (Notable)
San Francisco Tlalcilalcalpan	Mexico	Record daily precipitation	30.0 mm (1.2 in)	41 of 100 (Notable)
Broadview	United States	Record low minimum temperature	-2.2 C (28.0 F)	40 of 100 (Notable)
Paxton	United States	Record daily precipitation	71.1 mm (2.8 in)	40 of 100 (Notable)
Stuttgart	United States	Record high maximum temperature	37.2 C (99.0 F)	39 of 100 (Notable)
City of Melbourne Bay	Australia	Record daily precipitation	37.8 mm (1.5 in)	38 of 100 (Notable)
High Brg Lock 7	United States	Record daily precipitation	40.1 mm (1.6 in)	38 of 100 (Notable)
Caribou 2 S	United States	Record daily precipitation	40.6 mm (1.6 in)	38 of 100 (Notable)
Pembina	United States	Record daily precipitation	58.4 mm (2.3 in)	38 of 100 (Notable)
Greenville	United States	Record high maximum temperature	37.2 C (99.0 F)	37 of 100 (Notable)
Panelas	Brazil	Record daily precipitation	35.2 mm (1.4 in)	36 of 100 (Notable)
Cape Nelson Lighthouse Compari	Australia	Record daily precipitation	42.0 mm (1.7 in)	35 of 100 (Notable)
Yambacoona	Australia	Record daily precipitation	38.2 mm (1.5 in)	35 of 100 (Notable)
Chilapa (Dge)	Mexico	Record daily precipitation	37.8 mm (1.5 in)	35 of 100 (Notable)
Sterling	United States	Record daily precipitation	32.8 mm (1.3 in)	35 of 100 (Notable)
Abilene	United States	Record daily precipitation	59.7 mm (2.4 in)	35 of 100 (Notable)
Lockwood	United States	Record daily precipitation	58.4 mm (2.3 in)	35 of 100 (Notable)
Smithton (Grant Street)	Australia	Record daily precipitation	26.4 mm (1.0 in)	34 of 100 (Routine)
San Mateo	United States	Record high minimum temperature	16.7 C (62.1 F)	34 of 100 (Routine)
Waterville	United States	Record low minimum temperature	-0.6 C (30.9 F)	34 of 100 (Routine)
West Wyalong Post Office	Australia	Record daily precipitation	31.4 mm (1.2 in)	33 of 100 (Routine)
Currie Post Office	Australia	Record daily precipitation	30.0 mm (1.2 in)	33 of 100 (Routine)
Hailey 3 NNW	United States	Record low minimum temperature	-5.6 C (21.9 F)	33 of 100 (Routine)
Hershey 5 SSE	United States	Record daily precipitation	61.7 mm (2.4 in)	33 of 100 (Routine)
Chorozinho	Brazil	Record daily precipitation	57.1 mm (2.2 in)	31 of 100 (Routine)
Huatusco de Chicuellar	Mexico	Record high minimum temperature	18.9 C (66.0 F)	31 of 100 (Routine)
Harwell	Australia	Record daily precipitation	35.4 mm (1.4 in)	30 of 100 (Routine)
Ulricehamn	Sweden	Record low minimum temperature	-2.6 C (27.3 F)	30 of 100 (Routine)
Ennis	United States	Record low minimum temperature	-4.4 C (24.1 F)	30 of 100 (Routine)
Benton	United States	Record high maximum temperature	35.6 C (96.1 F)	29 of 100 (Routine)
Winamac 2SSE	United States	Record daily precipitation	25.7 mm (1.0 in)	29 of 100 (Routine)
Walters	United States	Record high maximum temperature	40.0 C (104.0 F)	29 of 100 (Routine)
Bakhmaro	Georgia	Record daily precipitation	26.0 mm (1.0 in)	28 of 100 (Routine)
Villiersdorp	South Africa	Record daily precipitation	61.0 mm (2.4 in)	28 of 100 (Routine)
Idaho City	United States	Record low minimum temperature	-5.6 C (21.9 F)	28 of 100 (Routine)
Pascagoula 3 NE	United States	Record high maximum temperature	35.0 C (95.0 F)	28 of 100 (Routine)
Arrowrock Dam	United States	Record low minimum temperature	0.0 C (32.0 F)	27 of 100 (Routine)
Georgetown Wtr Wks	United States	Record daily precipitation	26.7 mm (1.1 in)	27 of 100 (Routine)
Harlem	United States	Record low minimum temperature	0.0 C (32.0 F)	27 of 100 (Routine)
Puerto Madero	Mexico	Record low minimum temperature	15.0 C (59.0 F)	26 of 100 (Routine)
Philadelphia Polisie	South Africa	Record daily precipitation	33.8 mm (1.3 in)	26 of 100 (Routine)
Paragould	United States	Record high maximum temperature	36.7 C (98.1 F)	26 of 100 (Routine)
Beloit	United States	Record daily precipitation	34.3 mm (1.4 in)	26 of 100 (Routine)
Hamilton	United States	Record low minimum temperature	-0.6 C (30.9 F)	26 of 100 (Routine)

Counts by Type and Timescale

444 records

Records set or tied on 30 May 1977 by type: Highest daily maximum 82, Lowest daily maximum 32, Highest daily minimum 59, Lowest daily minimum 99, Heaviest daily rainfall 169, Heaviest daily snowfall 1, Deepest snow cover 2.

Records on 30 May 1977 by type
Record type	Records
Highest daily maximum	82
Lowest daily maximum	32
Highest daily minimum	59
Lowest daily minimum	99
Heaviest daily rainfall	169
Heaviest daily snowfall	1
Deepest snow cover	2

Records on 30 May 1977 by timescale: all-time 0, monthly 15, daily 429.

How Much Records Were Beaten By

341 broken records

Margins by which the 341 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 51.0. Ties are not counted.

Top 20 by Significance

30 May 1977

Top 20 records on 30 May 1977 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
30 May 1977	Izium, UA	daily rain	33.2 mm (1.3 in)	27.6 mm (1.1 in)	39 years	55 of 100 (Notable)
30 May 1977	Lake Leake (Kooeeyong), AU	daily rain	41.2 mm (1.6 in)	12.2 mm (0.5 in)	83 years	51 of 100 (Notable)
30 May 1977	Crookwell Post Office, AU	daily rain	69.6 mm (2.7 in)	47.2 mm (1.9 in)	8 years	51 of 100 (Notable)
30 May 1977	Yalgogrin North (Roloma), AU	daily rain	25.0 mm (1.0 in)	12.3 mm (0.5 in)	87 years	50 of 100 (Notable)
30 May 1977	Manildra (George St), AU	monthly rain	84.0 mm (3.3 in)	25.0 mm (1.0 in)	0 years	48 of 100 (Notable)
30 May 1977	Pavlograd, UA	daily rain	29.1 mm (1.1 in)	21.6 mm (0.9 in)	39 years	48 of 100 (Notable)
30 May 1977	Moss Vale (Hoskins Street), AU	daily rain	55.0 mm (2.2 in)	13.9 mm (0.5 in)	95 years	47 of 100 (Notable)
30 May 1977	Chilo Meldahl Locks & Dam, US	daily rain	76.2 mm (3.0 in)	42.9 mm (1.7 in)	8 years	47 of 100 (Notable)
30 May 1977	Tepacaltepec, MX	daily rain	39.9 mm (1.6 in)	39.1 mm (1.5 in)	22 years	46 of 100 (Notable)
30 May 1977	Mittagong (Beatrice Street), AU	daily rain	35.8 mm (1.4 in)	20.3 mm (0.8 in)	83 years	45 of 100 (Notable)
30 May 1977	Gillespie, AU	daily rain	31.2 mm (1.2 in)	24.3 mm (1.0 in)	40 years	42 of 100 (Notable)
30 May 1977	Stewarts Brook Composite, AU	daily rain	28.0 mm (1.1 in)	20.9 mm (0.8 in)	68 years	42 of 100 (Notable)
30 May 1977	Mendooran Post Office, AU	daily rain	37.0 mm (1.5 in)	7.8 mm (0.31 in)	83 years	42 of 100 (Notable)
30 May 1977	Galeana (Smn), MX	daily high min	27.8 C (82.0 F)	8.9 C (16.0 F)	28 years	42 of 100 (Notable)
30 May 1977	Caledonia, US	daily rain	29.0 mm (1.1 in)	19.3 mm (0.8 in)	60 years	42 of 100 (Notable)
30 May 1977	Morris W Cntrl Rsch & Outreach, US	daily rain	64.0 mm (2.5 in)	10.7 mm (0.4 in)	77 years	42 of 100 (Notable)
30 May 1977	Bannister Station, AU	daily rain	53.1 mm (2.1 in)	45.5 mm (1.8 in)	8 years	41 of 100 (Notable)
30 May 1977	San Francisco Tlalcilalcalpan, MX	daily rain	30.0 mm (1.2 in)	21.6 mm (0.9 in)	20 years	41 of 100 (Notable)
30 May 1977	Broadview, US	daily low min	-2.2 C (28.0 F)	5.5 C (9.9 F)	66 years	40 of 100 (Notable)
30 May 1977	Paxton, US	daily rain	71.1 mm (2.8 in)	25.4 mm (1.0 in)	39 years	40 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

1818 to 1977

Records set or tied on this calendar date in each year from 1818 to 1977. 1977 had 444 records.

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

Records on 05-30 in each year
Year	Records
1818	3
1844	1
1847	1
1848	1
1852	1
1853	1
1855	1
1856	1
1858	1
1860	2
1863	1
1864	1
1865	4
1867	1
1868	4
1870	1
1871	2
1873	4
1878	1
1879	1
1880	2
1881	1
1882	2
1883	1
1884	2
1885	1
1886	1
1887	1
1889	3
1890	1
1891	1
1892	2
1893	7
1894	2
1895	5
1896	1
1897	1
1898	2
1899	4
1900	1
1901	4
1902	9
1903	12
1904	7
1905	20
1906	8
1907	20
1908	32
1909	6
1910	22
1911	22
1912	26
1913	89
1914	25
1915	32
1916	41
1917	42
1918	31
1919	90
1920	28
1921	392
1922	72
1923	121
1924	187
1925	190
1926	201
1927	177
1928	86
1929	368
1930	530
1931	316
1932	256
1933	250
1934	731
1935	88
1936	579
1937	440
1938	309
1939	336
1940	289
1941	518
1942	500
1943	444
1944	325
1945	383
1946	310
1947	880
1948	386
1949	318
1950	376
1951	448
1952	295
1953	622
1954	271
1955	377
1956	466
1957	267
1958	480
1959	419
1960	274
1961	657
1962	454
1963	245
1964	709
1965	454
1966	326
1967	859
1968	357
1969	1,092
1970	483
1971	1,044
1972	721
1973	391
1974	631
1975	776
1976	499
1977	444
1978	888
1979	1,185
1980	650
1981	1,001
1982	981
1983	1,310
1984	2,543
1985	772
1986	1,264
1987	1,021
1988	1,371
1989	1,021
1990	983
1991	1,264
1992	1,413
1993	690
1994	834
1995	777
1996	893
1997	936
1998	1,190
1999	1,113
2000	1,391
2001	854
2002	940
2003	1,110
2004	1,219
2005	737
2006	1,179
2007	1,128
2008	829
2009	480
2010	771
2011	1,914
2012	720
2013	821
2014	551
2015	699
2016	540
2017	657
2018	1,319
2019	706
2020	920
2021	841
2022	1,034
2023	344
2024	600
2025	828
2026	525

Download the Data

Data for records on 1977-05-30: 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 10	285
10 to 20	33
20 to 30	16
30 to 40	1
40 to 50	5
50 to 60	1