Weather Records on 28 May 1978

802 weather records were set or tied worldwide on 28 May 1978. Highest significance: Hay Springs, US.

Key Facts for 28 May 1978

On 28 May 1978, 802 weather records were set or tied at long-record stations worldwide.
395 were record highs and 77 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 42 monthly and 758 daily.
Hay Springs set a monthly record daily precipitation of 94.0 mm (3.7 in) on 28 May 1978.
Across 161 earlier years (1794 to 2026) the same calendar date averaged 440 records.

Record Map

802 stations

802 station records on 28 May 1978 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 28 May 1978: highest significance records shown on the map
Station	Country	Type	Value	Significance
Hay Springs	United States	Record daily precipitation	94.0 mm (3.7 in)	71 of 100 (Major)
Santo Hipolito	Brazil	Record daily precipitation	55.0 mm (2.2 in)	54 of 100 (Notable)
Wichita Mtn Wr	United States	Record daily precipitation	108.0 mm (4.3 in)	53 of 100 (Notable)
Papkuil	South Africa	Record daily precipitation	32.0 mm (1.3 in)	51 of 100 (Notable)
Madrid/Cuatrovientos	Spain	Record daily precipitation	38.5 mm (1.5 in)	51 of 100 (Notable)
Winnibigoshish Dam	United States	Record daily precipitation	39.4 mm (1.6 in)	51 of 100 (Notable)
Santa Maria Do Jetiba (Dnos)	Brazil	Record daily precipitation	38.9 mm (1.5 in)	50 of 100 (Notable)
Roosevelt	United States	Record daily precipitation	90.9 mm (3.6 in)	50 of 100 (Notable)
Varzea da Palma	Brazil	Record daily precipitation	32.0 mm (1.3 in)	49 of 100 (Notable)
Union City 3 SE	United States	Record daily precipitation	92.2 mm (3.6 in)	49 of 100 (Notable)
Silverton	United States	Record daily precipitation	69.6 mm (2.7 in)	49 of 100 (Notable)
Kingfisher	United States	Record daily precipitation	62.2 mm (2.4 in)	48 of 100 (Notable)
Piranga	Brazil	Record daily precipitation	35.3 mm (1.4 in)	47 of 100 (Notable)
Perryville Wtp	United States	Record daily precipitation	84.6 mm (3.3 in)	47 of 100 (Notable)
Enid	United States	Record daily precipitation	64.5 mm (2.5 in)	47 of 100 (Notable)
Bridgeport	United States	Record daily precipitation	82.6 mm (3.3 in)	46 of 100 (Notable)
Dalton	United States	Record daily precipitation	79.2 mm (3.1 in)	46 of 100 (Notable)
Afonso Bezerra	Brazil	Record daily precipitation	68.4 mm (2.7 in)	45 of 100 (Notable)
Waseca S Rsch & Outreach Ctr	United States	Record daily precipitation	48.3 mm (1.9 in)	45 of 100 (Notable)
Alliance 1WNW	United States	Record daily precipitation	67.6 mm (2.7 in)	45 of 100 (Notable)
Holdenville 2SSE	United States	Record daily precipitation	64.0 mm (2.5 in)	45 of 100 (Notable)
Vinson	United States	Record daily precipitation	63.2 mm (2.5 in)	45 of 100 (Notable)
Puehu Ridge 1040	United States	Record daily precipitation	86.4 mm (3.4 in)	45 of 100 (Notable)
Fazenda Paraiso	Brazil	Record daily precipitation	32.8 mm (1.3 in)	44 of 100 (Notable)
Babbitt 2 SE	United States	Record daily precipitation	49.0 mm (1.9 in)	44 of 100 (Notable)
Stillwater 1 SE	United States	Record daily precipitation	70.4 mm (2.8 in)	44 of 100 (Notable)
Fargo 3ENE	United States	Record daily precipitation	79.2 mm (3.1 in)	44 of 100 (Notable)
Castlewood	United States	Record daily precipitation	61.0 mm (2.4 in)	44 of 100 (Notable)
Elk City 4 W	United States	Record daily precipitation	66.0 mm (2.6 in)	43 of 100 (Notable)
Waurika	United States	Record daily precipitation	84.8 mm (3.3 in)	43 of 100 (Notable)
Kalamazoo State Hospital	United States	Record high maximum temperature	34.4 C (93.9 F)	42 of 100 (Notable)
Mutual	United States	Record daily precipitation	63.5 mm (2.5 in)	42 of 100 (Notable)
Huntingdon	Canada	Record high maximum temperature	31.7 C (89.1 F)	41 of 100 (Notable)
Dawson	United States	Record daily precipitation	53.1 mm (2.1 in)	41 of 100 (Notable)
Box Butte Exp STN	United States	Record daily precipitation	72.4 mm (2.9 in)	41 of 100 (Notable)
Geary	United States	Record daily precipitation	82.8 mm (3.3 in)	41 of 100 (Notable)
Richmond	Canada	Record high minimum temperature	18.3 C (64.9 F)	40 of 100 (Notable)
Ostuta	Mexico	Record daily precipitation	108.0 mm (4.3 in)	40 of 100 (Notable)
Mangum	United States	Record daily precipitation	58.7 mm (2.3 in)	40 of 100 (Notable)
Wellington	United States	Record daily precipitation	73.7 mm (2.9 in)	40 of 100 (Notable)
Ashland Exp Farm	United States	Record daily precipitation	37.6 mm (1.5 in)	40 of 100 (Notable)
Fazenda Campo Grande	Brazil	Record daily precipitation	33.0 mm (1.3 in)	39 of 100 (Notable)
Hyannis	United States	Record daily precipitation	106.4 mm (4.2 in)	39 of 100 (Notable)
Pauls Valley 4 WSW	United States	Record daily precipitation	60.2 mm (2.4 in)	39 of 100 (Notable)
Follett	United States	Record daily precipitation	69.3 mm (2.7 in)	39 of 100 (Notable)
Acaiaca-Jusante	Brazil	Record daily precipitation	33.6 mm (1.3 in)	38 of 100 (Notable)
Ellsworth 2W	United States	Record daily precipitation	85.1 mm (3.4 in)	38 of 100 (Notable)
Woodward Fld STN	United States	Record daily precipitation	47.2 mm (1.9 in)	38 of 100 (Notable)
Tarago (Kildare)	Australia	Record daily precipitation	35.0 mm (1.4 in)	37 of 100 (Notable)
Anadarko 3 E	United States	Record daily precipitation	48.3 mm (1.9 in)	37 of 100 (Notable)
Marlow 1 WSW	United States	Record daily precipitation	69.1 mm (2.7 in)	37 of 100 (Notable)
Okeene	United States	Record daily precipitation	59.7 mm (2.4 in)	37 of 100 (Notable)
Climax	United States	Record daily snowfall	5.1 cm (2.0 in)	36 of 100 (Notable)
Chattanooga	United States	Record daily precipitation	83.1 mm (3.3 in)	36 of 100 (Notable)
North Pelican	United States	Record daily precipitation	38.4 mm (1.5 in)	36 of 100 (Notable)
Bambui	Brazil	Record daily precipitation	37.0 mm (1.5 in)	35 of 100 (Notable)
Bayfield 6 N	United States	Record daily precipitation	30.0 mm (1.2 in)	35 of 100 (Notable)
Santa Paula	United States	Record high maximum temperature	38.9 C (102.0 F)	34 of 100 (Routine)
Cordell	United States	Record daily precipitation	54.9 mm (2.2 in)	34 of 100 (Routine)
Perkins	United States	Record daily precipitation	52.1 mm (2.1 in)	34 of 100 (Routine)

Counts by Type and Timescale

802 records

Records set or tied on 28 May 1978 by type: Highest daily maximum 228, Lowest daily maximum 46, Highest daily minimum 167, Lowest daily minimum 31, Heaviest daily rainfall 325, Heaviest daily snowfall 5.

Records on 28 May 1978 by type
Record type	Records
Highest daily maximum	228
Lowest daily maximum	46
Highest daily minimum	167
Lowest daily minimum	31
Heaviest daily rainfall	325
Heaviest daily snowfall	5
Deepest snow cover	0

Records on 28 May 1978 by timescale: all-time 2, monthly 42, daily 758.

How Much Records Were Beaten By

639 broken records

Margins by which the 639 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 70.1. Ties are not counted.

Top 20 by Significance

28 May 1978

Top 20 records on 28 May 1978 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
28 May 1978	Hay Springs, US	monthly rain	94.0 mm (3.7 in)	29.0 mm (1.1 in)	77 years	71 of 100 (Major)
28 May 1978	Santo Hipolito, BR	daily rain	55.0 mm (2.2 in)	55.0 mm (2.2 in)	36 years	54 of 100 (Notable)
28 May 1978	Wichita Mtn Wr, US	daily rain	108.0 mm (4.3 in)	68.1 mm (2.7 in)	32 years	53 of 100 (Notable)
28 May 1978	Papkuil, ZA	daily rain	32.0 mm (1.3 in)	27.4 mm (1.1 in)	52 years	51 of 100 (Notable)
28 May 1978	Madrid/Cuatrovientos, ES	daily rain	38.5 mm (1.5 in)	27.5 mm (1.1 in)	28 years	51 of 100 (Notable)
28 May 1978	Winnibigoshish Dam, US	daily rain	39.4 mm (1.6 in)	17.3 mm (0.7 in)	78 years	51 of 100 (Notable)
28 May 1978	Santa Maria Do Jetiba (Dnos), BR	daily rain	38.9 mm (1.5 in)	28.9 mm (1.1 in)	28 years	50 of 100 (Notable)
28 May 1978	Roosevelt, US	daily rain	90.9 mm (3.6 in)	70.1 mm (2.8 in)	28 years	50 of 100 (Notable)
28 May 1978	Varzea da Palma, BR	daily rain	32.0 mm (1.3 in)	30.0 mm (1.2 in)	20 years	49 of 100 (Notable)
28 May 1978	Union City 3 SE, US	daily rain	92.2 mm (3.6 in)	68.3 mm (2.7 in)	25 years	49 of 100 (Notable)
28 May 1978	Silverton, US	daily rain	69.6 mm (2.7 in)	50.0 mm (2.0 in)	28 years	49 of 100 (Notable)
28 May 1978	Kingfisher, US	daily rain	62.2 mm (2.4 in)	30.7 mm (1.2 in)	76 years	48 of 100 (Notable)
28 May 1978	Piranga, BR	daily rain	35.3 mm (1.4 in)	27.0 mm (1.1 in)	16 years	47 of 100 (Notable)
28 May 1978	Perryville Wtp, US	daily rain	84.6 mm (3.3 in)	56.2 mm (2.2 in)	1 year	47 of 100 (Notable)
28 May 1978	Enid, US	daily rain	64.5 mm (2.5 in)	35.3 mm (1.4 in)	60 years	47 of 100 (Notable)
28 May 1978	Bridgeport, US	monthly rain	82.6 mm (3.3 in)	23.7 mm (0.9 in)	9 years	46 of 100 (Notable)
28 May 1978	Dalton, US	daily rain	79.2 mm (3.1 in)	39.8 mm (1.6 in)	17 years	46 of 100 (Notable)
28 May 1978	Afonso Bezerra, BR	daily rain	68.4 mm (2.7 in)	47.4 mm (1.9 in)	27 years	45 of 100 (Notable)
28 May 1978	Waseca S Rsch & Outreach Ctr, US	daily rain	48.3 mm (1.9 in)	22.4 mm (0.9 in)	63 years	45 of 100 (Notable)
28 May 1978	Alliance 1WNW, US	monthly rain	67.6 mm (2.7 in)	6.6 mm (0.26 in)	71 years	45 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 1978

Records set or tied on this calendar date in each year from 1794 to 1978. 1978 had 802 records.

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

Records on 05-28 in each year
Year	Records
1794	1
1797	1
1811	1
1824	1
1832	1
1836	5
1840	1
1841	1
1847	2
1848	1
1851	2
1857	1
1858	1
1863	1
1865	1
1868	4
1869	1
1876	1
1879	2
1880	2
1884	3
1885	2
1887	1
1888	3
1889	3
1890	3
1891	2
1892	9
1893	2
1894	9
1895	1
1896	5
1897	6
1898	1
1899	6
1900	4
1901	6
1902	12
1903	9
1904	6
1905	14
1906	31
1907	36
1908	26
1909	7
1910	18
1911	42
1912	19
1913	28
1914	58
1915	27
1916	24
1917	36
1918	43
1919	43
1920	33
1921	87
1922	80
1923	72
1924	109
1925	122
1926	143
1927	301
1928	150
1929	355
1930	131
1931	574
1932	171
1933	212
1934	537
1935	186
1936	337
1937	212
1938	285
1939	433
1940	217
1941	711
1942	279
1943	238
1944	330
1945	331
1946	413
1947	1,049
1948	333
1949	321
1950	276
1951	503
1952	314
1953	392
1954	382
1955	413
1956	456
1957	272
1958	792
1959	557
1960	431
1961	1,026
1962	859
1963	368
1964	394
1965	536
1966	284
1967	350
1968	610
1969	863
1970	310
1971	767
1972	575
1973	834
1974	585
1975	397
1976	914
1977	826
1978	802
1979	521
1980	808
1981	711
1982	1,204
1983	1,666
1984	1,357
1985	914
1986	591
1987	1,139
1988	806
1989	817
1990	1,024
1991	1,647
1992	1,610
1993	870
1994	981
1995	1,078
1996	1,438
1997	1,108
1998	1,043
1999	952
2000	1,229
2001	1,024
2002	612
2003	1,049
2004	875
2005	1,032
2006	1,566
2007	1,084
2008	902
2009	733
2010	937
2011	1,188
2012	1,237
2013	541
2014	781
2015	487
2016	625
2017	710
2018	1,348
2019	973
2020	875
2021	537
2022	476
2023	445
2024	907
2025	663
2026	1,053

Download the Data

Data for records on 1978-05-28: 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	485
10 to 20	69
20 to 30	42
30 to 40	27
40 to 50	6
50 to 60	4
60 to 70	5
70 to 80	1