Weather Records on 24 May 1977

997 weather records were set or tied worldwide on 24 May 1977. Highest significance: New Harmony, US.

Key Facts for 24 May 1977

On 24 May 1977, 997 weather records were set or tied at long-record stations worldwide.
596 were record highs and 163 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 29 monthly and 968 daily.
New Harmony set a daily record precipitation of 38.4 mm (1.5 in) on 24 May 1977.
Across 161 earlier years (1794 to 2026) the same calendar date averaged 452 records.

Record Map

997 stations

997 station records on 24 May 1977 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 24 May 1977: highest significance records shown on the map
Station	Country	Type	Value	Significance
New Harmony	United States	Record daily precipitation	38.4 mm (1.5 in)	62 of 100 (Major)
Uniao Dos Palmares	Brazil	Record daily precipitation	129.1 mm (5.1 in)	55 of 100 (Notable)
Washington Wwtp 4W	United States	Record daily precipitation	89.4 mm (3.5 in)	55 of 100 (Notable)
Major Isidoro (Sertaozinho)	Brazil	Record daily precipitation	48.7 mm (1.9 in)	53 of 100 (Notable)
Lumsden	Canada	Record daily precipitation	50.3 mm (2.0 in)	51 of 100 (Notable)
Pioche	United States	Record daily precipitation	33.5 mm (1.3 in)	49 of 100 (Notable)
North Bay	Canada	Record high minimum temperature	21.1 C (70.0 F)	47 of 100 (Notable)
Mayaguez City	Puerto Rico [United States]	Record low maximum temperature	25.0 C (77.0 F)	47 of 100 (Notable)
Greenville	United States	Record daily precipitation	101.6 mm (4.0 in)	47 of 100 (Notable)
Pacatuba (Pacatiba)	Brazil	Record daily precipitation	95.0 mm (3.7 in)	46 of 100 (Notable)
Edenton	United States	Record daily precipitation	92.7 mm (3.6 in)	46 of 100 (Notable)
Brome	Canada	Record high minimum temperature	22.2 C (72.0 F)	44 of 100 (Notable)
Ponce 4 E	Puerto Rico [United States]	Record low maximum temperature	26.1 C (79.0 F)	44 of 100 (Notable)
Acopiara	Brazil	Record daily precipitation	85.0 mm (3.3 in)	43 of 100 (Notable)
Alton	United States	Record daily precipitation	26.4 mm (1.0 in)	42 of 100 (Notable)
Arecibo 3 ESE	Puerto Rico [United States]	Record low maximum temperature	26.1 C (79.0 F)	39 of 100 (Notable)
Stephan 2 NW	United States	Record high minimum temperature	21.7 C (71.1 F)	39 of 100 (Notable)
Semans	Canada	Record daily precipitation	30.7 mm (1.2 in)	38 of 100 (Notable)
Port Hastings	Canada	Record high maximum temperature	27.8 C (82.0 F)	38 of 100 (Notable)
Karabulak	Russia	Record daily precipitation	28.5 mm (1.1 in)	38 of 100 (Notable)
Spearfish	United States	Record high minimum temperature	17.8 C (64.0 F)	38 of 100 (Notable)
Nicosia	Cyprus	Record high maximum temperature	37.8 C (100.0 F)	37 of 100 (Notable)
Fleming	United States	Record daily precipitation	33.5 mm (1.3 in)	37 of 100 (Notable)
Oelrichs	United States	Record high minimum temperature	16.1 C (61.0 F)	37 of 100 (Notable)
Watson Lake A	Canada	Record daily precipitation	25.7 mm (1.0 in)	36 of 100 (Notable)
Certkovo	Russia	Record daily precipitation	37.8 mm (1.5 in)	36 of 100 (Notable)
Williston Sloulin Fld	United States	Record high minimum temperature	17.8 C (64.0 F)	35 of 100 (Notable)
Nokomis	Canada	Record daily precipitation	26.4 mm (1.0 in)	34 of 100 (Routine)
Pierson	Canada	Record high minimum temperature	15.6 C (60.1 F)	34 of 100 (Routine)
Nicosia	Cyprus	Record high minimum temperature	20.0 C (68.0 F)	34 of 100 (Routine)
Creighton	United States	Record high minimum temperature	18.3 C (64.9 F)	34 of 100 (Routine)
Ft Yates 4 SW	United States	Record high minimum temperature	18.3 C (64.9 F)	34 of 100 (Routine)
Chamberlain	United States	Record high minimum temperature	18.9 C (66.0 F)	34 of 100 (Routine)
La Pocatiere Cda	Canada	Record high minimum temperature	20.6 C (69.1 F)	33 of 100 (Routine)
Geneseo	United States	Record high maximum temperature	31.7 C (89.1 F)	33 of 100 (Routine)
Collegeville St John's	United States	Record high maximum temperature	28.9 C (84.0 F)	33 of 100 (Routine)
Pine Rvr Dam	United States	Record high maximum temperature	30.0 C (86.0 F)	33 of 100 (Routine)
Hay Springs	United States	Record high minimum temperature	15.0 C (59.0 F)	33 of 100 (Routine)
Lockport 2SE	United States	Record high minimum temperature	18.9 C (66.0 F)	33 of 100 (Routine)
Old Forge	United States	Record daily precipitation	27.9 mm (1.1 in)	33 of 100 (Routine)
Milesville 5 NE	United States	Record high minimum temperature	18.3 C (64.9 F)	33 of 100 (Routine)
Cherry Point MCAS	United States	Record daily precipitation	59.7 mm (2.4 in)	33 of 100 (Routine)
Port Kenny (Yandra)	Australia	Record daily precipitation	30.2 mm (1.2 in)	32 of 100 (Routine)
Serra Grande (Ibitirucu)	Brazil	Record daily precipitation	36.2 mm (1.4 in)	32 of 100 (Routine)
Pointe Au Pere	Canada	Record high maximum temperature	27.8 C (82.0 F)	32 of 100 (Routine)
Astana	Kazakhstan	Record high minimum temperature	17.2 C (63.0 F)	32 of 100 (Routine)
Dos Bocas	Puerto Rico [United States]	Record low maximum temperature	23.9 C (75.0 F)	32 of 100 (Routine)
Hyannis	United States	Record high minimum temperature	16.1 C (61.0 F)	32 of 100 (Routine)
Auburn	United States	Record high minimum temperature	17.8 C (64.0 F)	32 of 100 (Routine)
Hot Springs	United States	Record high minimum temperature	16.1 C (61.0 F)	32 of 100 (Routine)
Chicoutimi	Canada	Record high minimum temperature	13.3 C (55.9 F)	31 of 100 (Routine)
Farmington 3NW	United States	Record high maximum temperature	29.4 C (84.9 F)	31 of 100 (Routine)
Long Prairie	United States	Record high maximum temperature	29.4 C (84.9 F)	31 of 100 (Routine)
Sandy Lake Dam Libby	United States	Record high maximum temperature	28.3 C (82.9 F)	31 of 100 (Routine)
Ithaca Cornell UNIV	United States	Record high minimum temperature	17.8 C (64.0 F)	31 of 100 (Routine)
Penn Yan	United States	Record high minimum temperature	17.8 C (64.0 F)	31 of 100 (Routine)
Cottonwood 2 E	United States	Record high minimum temperature	17.8 C (64.0 F)	31 of 100 (Routine)
Redig 11 NE	United States	Record high minimum temperature	15.6 C (60.1 F)	31 of 100 (Routine)
Wallaceburg	Canada	Record high maximum temperature	31.0 C (87.8 F)	30 of 100 (Routine)
La Malbaie	Canada	Record high minimum temperature	16.1 C (61.0 F)	30 of 100 (Routine)

Counts by Type and Timescale

997 records

Records set or tied on 24 May 1977 by type: Highest daily maximum 287, Lowest daily maximum 117, Highest daily minimum 309, Lowest daily minimum 46, Heaviest daily rainfall 237, Heaviest daily snowfall 1.

Records on 24 May 1977 by type
Record type	Records
Highest daily maximum	287
Lowest daily maximum	117
Highest daily minimum	309
Lowest daily minimum	46
Heaviest daily rainfall	237
Heaviest daily snowfall	1
Deepest snow cover	0

Records on 24 May 1977 by timescale: all-time 0, monthly 29, daily 968.

How Much Records Were Beaten By

785 broken records

Margins by which the 785 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 78.2. Ties are not counted.

Top 20 by Significance

24 May 1977

Top 20 records on 24 May 1977 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
24 May 1977	New Harmony, US	daily rain	38.4 mm (1.5 in)	22.7 mm (0.9 in)	60 years	62 of 100 (Major)
24 May 1977	Uniao Dos Palmares, BR	daily rain	129.1 mm (5.1 in)	78.2 mm (3.1 in)	30 years	55 of 100 (Notable)
24 May 1977	Washington Wwtp 4W, US	monthly rain	89.4 mm (3.5 in)	15.5 mm (0.6 in)	82 years	55 of 100 (Notable)
24 May 1977	Major Isidoro (Sertaozinho), BR	daily rain	48.7 mm (1.9 in)	29.1 mm (1.1 in)	47 years	53 of 100 (Notable)
24 May 1977	Lumsden, CA	daily rain	50.3 mm (2.0 in)	40.1 mm (1.6 in)	22 years	51 of 100 (Notable)
24 May 1977	Pioche, US	daily rain	33.5 mm (1.3 in)	25.4 mm (1.0 in)	12 years	49 of 100 (Notable)
24 May 1977	North Bay, CA	monthly high min	21.1 C (70.0 F)	2.8 C (5.0 F)	76 years	47 of 100 (Notable)
24 May 1977	Mayaguez City, PR	daily low max	25.0 C (77.0 F)	3.9 C (7.0 F)	56 years	47 of 100 (Notable)
24 May 1977	Greenville, US	monthly rain	101.6 mm (4.0 in)	12.7 mm (0.5 in)	61 years	47 of 100 (Notable)
24 May 1977	Pacatuba (Pacatiba), BR	daily rain	95.0 mm (3.7 in)	45.6 mm (1.8 in)	42 years	46 of 100 (Notable)
24 May 1977	Edenton, US	monthly rain	92.7 mm (3.6 in)	8.6 mm (0.34 in)	66 years	46 of 100 (Notable)
24 May 1977	Brome, CA	monthly high min	22.2 C (72.0 F)	2.2 C (4.0 F)	73 years	44 of 100 (Notable)
24 May 1977	Ponce 4 E, PR	daily low max	26.1 C (79.0 F)	1.7 C (3.1 F)	75 years	44 of 100 (Notable)
24 May 1977	Acopiara, BR	daily rain	85.0 mm (3.3 in)	60.0 mm (2.4 in)	10 years	43 of 100 (Notable)
24 May 1977	Alton, US	daily rain	26.4 mm (1.0 in)	11.2 mm (0.4 in)	58 years	42 of 100 (Notable)
24 May 1977	Arecibo 3 ESE, PR	daily low max	26.1 C (79.0 F)	3.3 C (5.9 F)	34 years	39 of 100 (Notable)
24 May 1977	Stephan 2 NW, US	monthly high min	21.7 C (71.1 F)	0.6 C (1.1 F)	73 years	39 of 100 (Notable)
24 May 1977	Semans, CA	daily rain	30.7 mm (1.2 in)	14.2 mm (0.6 in)	44 years	38 of 100 (Notable)
24 May 1977	Port Hastings, CA	daily high max	27.8 C (82.0 F)	0.6 C (1.1 F)	90 years	38 of 100 (Notable)
24 May 1977	Karabulak, RU	daily rain	28.5 mm (1.1 in)	14.7 mm (0.6 in)	40 years	38 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

1794 to 1977

Records set or tied on this calendar date in each year from 1794 to 1977. 1977 had 997 records.

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

Records on 05-24 in each year
Year	Records
1794	1
1795	1
1797	1
1817	1
1831	1
1837	2
1838	1
1840	1
1841	2
1844	1
1847	3
1848	1
1864	1
1865	1
1866	5
1867	7
1868	2
1870	1
1877	2
1880	2
1882	2
1884	2
1886	2
1888	1
1889	3
1890	3
1891	4
1892	1
1893	8
1894	1
1895	1
1896	1
1897	5
1898	4
1899	7
1900	5
1901	7
1902	8
1903	9
1904	14
1905	16
1906	36
1907	15
1908	16
1909	16
1910	34
1911	28
1912	41
1913	30
1914	35
1915	8
1916	19
1917	86
1918	27
1919	25
1920	38
1921	139
1922	101
1923	106
1924	334
1925	347
1926	284
1927	221
1928	290
1929	112
1930	173
1931	475
1932	251
1933	477
1934	196
1935	426
1936	432
1937	187
1938	438
1939	498
1940	289
1941	499
1942	245
1943	439
1944	710
1945	226
1946	501
1947	456
1948	250
1949	436
1950	640
1951	881
1952	720
1953	1,005
1954	260
1955	841
1956	1,027
1957	513
1958	825
1959	315
1960	476
1961	301
1962	479
1963	734
1964	852
1965	502
1966	340
1967	904
1968	568
1969	408
1970	329
1971	625
1972	487
1973	533
1974	584
1975	886
1976	411
1977	997
1978	797
1979	1,115
1980	978
1981	758
1982	725
1983	1,332
1984	737
1985	637
1986	573
1987	664
1988	689
1989	1,346
1990	923
1991	1,495
1992	1,562
1993	826
1994	832
1995	1,247
1996	1,367
1997	1,028
1998	931
1999	806
2000	1,549
2001	1,335
2002	1,163
2003	1,011
2004	1,276
2005	967
2006	994
2007	1,349
2008	1,173
2009	970
2010	1,699
2011	1,026
2012	983
2013	861
2014	757
2015	501
2016	408
2017	876
2018	595
2019	750
2020	517
2021	583
2022	709
2023	353
2024	930
2025	542
2026	877

Download the Data

Data for records on 1977-05-24: 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	726
10 to 20	47
20 to 30	7
30 to 40	1
40 to 50	2
50 to 60	0
60 to 70	1
70 to 80	1