Weather Records on 31 May 1978

873 weather records were set or tied worldwide on 31 May 1978. Highest significance: Parateca, BR.

Key Facts for 31 May 1978

On 31 May 1978, 873 weather records were set or tied at long-record stations worldwide.
260 were record highs and 177 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 40 monthly and 833 daily.
Parateca set a monthly record daily precipitation of 79.0 mm (3.1 in) on 31 May 1978.
Across 161 earlier years (1811 to 2026) the same calendar date averaged 435 records.

Record Map

873 stations

873 station records on 31 May 1978 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 31 May 1978: highest significance records shown on the map
Station	Country	Type	Value	Significance
Parateca	Brazil	Record daily precipitation	79.0 mm (3.1 in)	54 of 100 (Notable)
Goonoo Goonoo Station	Australia	Record daily precipitation	52.2 mm (2.1 in)	53 of 100 (Notable)
Lindsborg 3E	United States	Record daily precipitation	51.3 mm (2.0 in)	53 of 100 (Notable)
Granville	United States	Record daily precipitation	52.3 mm (2.1 in)	52 of 100 (Notable)
Running Stream (Brooklyn)	Australia	Record daily precipitation	56.8 mm (2.2 in)	51 of 100 (Notable)
Eulo Post Office	Australia	Record daily precipitation	49.0 mm (1.9 in)	50 of 100 (Notable)
Piranga	Brazil	Record daily precipitation	37.0 mm (1.5 in)	49 of 100 (Notable)
Tahoua	Niger	Record daily precipitation	32.4 mm (1.3 in)	49 of 100 (Notable)
Usina de Varginha	Brazil	Record daily precipitation	41.6 mm (1.6 in)	48 of 100 (Notable)
Chazy	United States	Record daily precipitation	48.3 mm (1.9 in)	48 of 100 (Notable)
Carlisle	United States	Record high minimum temperature	23.9 C (75.0 F)	48 of 100 (Notable)
Noorama	Australia	Record daily precipitation	58.0 mm (2.3 in)	47 of 100 (Notable)
Woodstock	Canada	Record high maximum temperature	35.0 C (95.0 F)	47 of 100 (Notable)
Walden	United States	Record daily snowfall	6.4 cm (2.5 in)	46 of 100 (Notable)
Niamey Aero	Niger	Record daily precipitation	46.7 mm (1.8 in)	45 of 100 (Notable)
Collerina (Corrella)	Australia	Record daily precipitation	39.6 mm (1.6 in)	44 of 100 (Notable)
Winton (Nioka)	Australia	Record daily precipitation	58.0 mm (2.3 in)	44 of 100 (Notable)
Upper Rouchel School	Australia	Record daily precipitation	35.5 mm (1.4 in)	44 of 100 (Notable)
Newport	United States	Record high maximum temperature	27.8 C (82.0 F)	44 of 100 (Notable)
Ilford (Warrangunyah)	Australia	Record daily precipitation	46.0 mm (1.8 in)	43 of 100 (Notable)
Marshallville 1 SSW	United States	Record daily precipitation	48.0 mm (1.9 in)	42 of 100 (Notable)
Mudgee (George Street)	Australia	Record daily precipitation	56.0 mm (2.2 in)	41 of 100 (Notable)
Sonoma	United States	Record high minimum temperature	17.2 C (63.0 F)	41 of 100 (Notable)
Barringun	Australia	Record daily precipitation	38.8 mm (1.5 in)	40 of 100 (Notable)
Rylstone (Ilford Rd)	Australia	Record daily precipitation	47.6 mm (1.9 in)	39 of 100 (Notable)
Lowan Hills	Australia	Record daily precipitation	38.0 mm (1.5 in)	38 of 100 (Notable)
Jalostotitlan	Mexico	Record daily precipitation	51.1 mm (2.0 in)	38 of 100 (Notable)
Stockholm	Sweden	Record high maximum temperature	26.6 C (79.9 F)	38 of 100 (Notable)
Topeka ASOS	United States	Record daily precipitation	91.9 mm (3.6 in)	38 of 100 (Notable)
Walgett Council Depot	Australia	Record high minimum temperature	15.8 C (60.4 F)	37 of 100 (Notable)
Charbon Standard Portland Ceme	Australia	Record daily precipitation	33.2 mm (1.3 in)	37 of 100 (Notable)
Paisley	United Kingdom	Record high maximum temperature	27.8 C (82.0 F)	37 of 100 (Notable)
Minot Exp STN	United States	Record daily precipitation	39.9 mm (1.6 in)	37 of 100 (Notable)
Ballandool	Australia	Record daily precipitation	47.0 mm (1.9 in)	36 of 100 (Notable)
Boorara	Australia	Record daily precipitation	38.0 mm (1.5 in)	36 of 100 (Notable)
Denman (Palace Street)	Australia	Record daily precipitation	28.8 mm (1.1 in)	36 of 100 (Notable)
Mendooran Post Office	Australia	Record daily precipitation	34.8 mm (1.4 in)	36 of 100 (Notable)
Windsor Bowling Club	Australia	Record daily precipitation	31.8 mm (1.3 in)	36 of 100 (Notable)
Marrar (Centenary Drive)	Australia	Record daily precipitation	26.0 mm (1.0 in)	36 of 100 (Notable)
Campanario	Brazil	Record daily precipitation	25.6 mm (1.0 in)	36 of 100 (Notable)
Imperial	United States	Record daily precipitation	27.9 mm (1.1 in)	36 of 100 (Notable)
Boatman Station	Australia	Record daily precipitation	37.0 mm (1.5 in)	35 of 100 (Notable)
Hungerford	Australia	Record daily precipitation	40.4 mm (1.6 in)	35 of 100 (Notable)
Gilgandra (Chelmsford Ave)	Australia	Record daily precipitation	47.3 mm (1.9 in)	35 of 100 (Notable)
Richmond - Uws Hawkesbury	Australia	Record daily precipitation	26.6 mm (1.0 in)	35 of 100 (Notable)
Wibaux 2 E	United States	Record daily precipitation	26.7 mm (1.1 in)	35 of 100 (Notable)
Goondiwindi Post Office	Australia	Record high minimum temperature	16.0 C (60.8 F)	34 of 100 (Routine)
Rowena (Iffley)	Australia	Record daily precipitation	52.8 mm (2.1 in)	34 of 100 (Routine)
Fazenda Campo Grande	Brazil	Record daily precipitation	30.0 mm (1.2 in)	34 of 100 (Routine)
Gyzylarbat	Turkmenistan	Record low maximum temperature	24.6 C (76.3 F)	34 of 100 (Routine)
Hagerstown	United States	Record high minimum temperature	20.0 C (68.0 F)	34 of 100 (Routine)
Crete 4ESE	United States	Record daily precipitation	44.7 mm (1.8 in)	34 of 100 (Routine)
Liberty 1 NE	United States	Record high maximum temperature	28.9 C (84.0 F)	34 of 100 (Routine)
Watertown	United States	Record high maximum temperature	30.6 C (87.1 F)	34 of 100 (Routine)
Drake	United States	Record daily precipitation	36.3 mm (1.4 in)	34 of 100 (Routine)
Heber	United States	Record low minimum temperature	-2.8 C (27.0 F)	34 of 100 (Routine)
Janesville	United States	Record high maximum temperature	32.8 C (91.0 F)	34 of 100 (Routine)
Victoria Downs	Australia	Record daily precipitation	27.0 mm (1.1 in)	33 of 100 (Routine)
Weilmoringle	Australia	Record daily precipitation	51.4 mm (2.0 in)	33 of 100 (Routine)
Curlewis (Pine Cliff)	Australia	Record daily precipitation	26.0 mm (1.0 in)	33 of 100 (Routine)

Counts by Type and Timescale

873 records

Records set or tied on 31 May 1978 by type: Highest daily maximum 142, Lowest daily maximum 92, Highest daily minimum 118, Lowest daily minimum 85, Heaviest daily rainfall 431, Heaviest daily snowfall 5.

Records on 31 May 1978 by type
Record type	Records
Highest daily maximum	142
Lowest daily maximum	92
Highest daily minimum	118
Lowest daily minimum	85
Heaviest daily rainfall	431
Heaviest daily snowfall	5
Deepest snow cover	0

Records on 31 May 1978 by timescale: all-time 0, monthly 40, daily 833.

How Much Records Were Beaten By

719 broken records

Margins by which the 719 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 84.0. Ties are not counted.

Top 20 by Significance

31 May 1978

Top 20 records on 31 May 1978 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
31 May 1978	Parateca, BR	monthly rain	79.0 mm (3.1 in)	49.8 mm (2.0 in)	1 year	54 of 100 (Notable)
31 May 1978	Goonoo Goonoo Station, AU	daily rain	52.2 mm (2.1 in)	16.1 mm (0.6 in)	95 years	53 of 100 (Notable)
31 May 1978	Lindsborg 3E, US	daily rain	51.3 mm (2.0 in)	34.0 mm (1.3 in)	69 years	53 of 100 (Notable)
31 May 1978	Granville, US	daily rain	52.3 mm (2.1 in)	37.1 mm (1.5 in)	16 years	52 of 100 (Notable)
31 May 1978	Running Stream (Brooklyn), AU	daily rain	56.8 mm (2.2 in)	24.5 mm (1.0 in)	56 years	51 of 100 (Notable)
31 May 1978	Eulo Post Office, AU	daily rain	49.0 mm (1.9 in)	33.0 mm (1.3 in)	39 years	50 of 100 (Notable)
31 May 1978	Piranga, BR	daily rain	37.0 mm (1.5 in)	36.3 mm (1.4 in)	23 years	49 of 100 (Notable)
31 May 1978	Tahoua, NE	daily rain	32.4 mm (1.3 in)	30.0 mm (1.2 in)	17 years	49 of 100 (Notable)
31 May 1978	Usina de Varginha, BR	daily rain	41.6 mm (1.6 in)	32.0 mm (1.3 in)	28 years	48 of 100 (Notable)
31 May 1978	Chazy, US	daily rain	48.3 mm (1.9 in)	33.3 mm (1.3 in)	4 years	48 of 100 (Notable)
31 May 1978	Carlisle, US	monthly high min	23.9 C (75.0 F)	2.8 C (5.0 F)	82 years	48 of 100 (Notable)
31 May 1978	Noorama, AU	daily rain	58.0 mm (2.3 in)	41.0 mm (1.6 in)	41 years	47 of 100 (Notable)
31 May 1978	Woodstock, CA	monthly high max	35.0 C (95.0 F)	2.2 C (4.0 F)	83 years	47 of 100 (Notable)
31 May 1978	Walden, US	daily snowfall	6.4 cm (2.5 in)	6.4 cm (2.5 in)	79 years	46 of 100 (Notable)
31 May 1978	Niamey Aero, NE	daily rain	46.7 mm (1.8 in)	40.1 mm (1.6 in)	19 years	45 of 100 (Notable)
31 May 1978	Collerina (Corrella), AU	daily rain	39.6 mm (1.6 in)	13.9 mm (0.5 in)	75 years	44 of 100 (Notable)
31 May 1978	Winton (Nioka), AU	daily rain	58.0 mm (2.3 in)	32.3 mm (1.3 in)	35 years	44 of 100 (Notable)
31 May 1978	Upper Rouchel School, AU	daily rain	35.5 mm (1.4 in)	30.4 mm (1.2 in)	31 years	44 of 100 (Notable)
31 May 1978	Newport, US	monthly high max	27.8 C (82.0 F)	0.6 C (1.1 F)	80 years	44 of 100 (Notable)
31 May 1978	Ilford (Warrangunyah), AU	daily rain	46.0 mm (1.8 in)	18.6 mm (0.7 in)	52 years	43 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

1811 to 1978

Records set or tied on this calendar date in each year from 1811 to 1978. 1978 had 873 records.

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

Records on 05-31 in each year
Year	Records
1811	1
1818	3
1827	1
1836	2
1845	1
1847	1
1853	2
1855	2
1858	1
1864	2
1865	1
1866	1
1867	1
1868	4
1869	1
1871	2
1873	3
1874	1
1877	1
1878	2
1879	2
1880	3
1882	1
1883	1
1885	1
1888	1
1889	2
1890	1
1892	1
1893	4
1894	2
1895	8
1897	5
1898	7
1899	1
1900	2
1901	9
1902	9
1903	17
1904	19
1905	7
1906	11
1907	20
1908	12
1909	8
1910	26
1911	20
1912	15
1913	83
1914	20
1915	23
1916	23
1917	13
1918	20
1919	44
1920	46
1921	157
1922	49
1923	98
1924	152
1925	226
1926	228
1927	121
1928	67
1929	246
1930	612
1931	223
1932	181
1933	397
1934	782
1935	156
1936	559
1937	462
1938	424
1939	461
1940	383
1941	410
1942	364
1943	552
1944	372
1945	457
1946	380
1947	439
1948	295
1949	303
1950	467
1951	640
1952	374
1953	654
1954	445
1955	534
1956	632
1957	304
1958	429
1959	459
1960	247
1961	472
1962	565
1963	354
1964	1,237
1965	494
1966	601
1967	987
1968	276
1969	555
1970	573
1971	714
1972	1,127
1973	418
1974	473
1975	797
1976	435
1977	605
1978	873
1979	915
1980	517
1981	775
1982	817
1983	1,494
1984	2,047
1985	790
1986	1,365
1987	822
1988	1,255
1989	912
1990	900
1991	1,381
1992	1,031
1993	982
1994	776
1995	693
1996	946
1997	1,163
1998	1,215
1999	790
2000	1,172
2001	1,047
2002	1,162
2003	831
2004	1,071
2005	724
2006	1,045
2007	793
2008	809
2009	570
2010	741
2011	1,498
2012	764
2013	1,100
2014	565
2015	704
2016	402
2017	440
2018	1,211
2019	420
2020	673
2021	834
2022	902
2023	454
2024	809
2025	1,204
2026	536

Download the Data

Data for records on 1978-05-31: 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 20	671
20 to 40	43
40 to 60	3
60 to 80	1
80 to 100	1