Weather Records on 27 May 1978

814 weather records were set or tied worldwide on 27 May 1978. Highest significance: Bajanaul, KZ.

Key Facts for 27 May 1978

On 27 May 1978, 814 weather records were set or tied at long-record stations worldwide.
540 were record highs and 109 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 38 monthly and 775 daily.
Bajanaul set a monthly record daily precipitation of 44.4 mm (1.7 in) on 27 May 1978.
Across 164 earlier years (1797 to 2026) the same calendar date averaged 415 records.

Record Map

814 stations

814 station records on 27 May 1978 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 27 May 1978: highest significance records shown on the map
Station	Country	Type	Value	Significance
Bajanaul	Kazakhstan	Record daily precipitation	44.4 mm (1.7 in)	59 of 100 (Notable)
Farmington 3NW	United States	Record daily precipitation	46.0 mm (1.8 in)	49 of 100 (Notable)
Booker	United States	Record daily precipitation	95.3 mm (3.8 in)	49 of 100 (Notable)
Weatherford	United States	Record daily precipitation	153.9 mm (6.1 in)	45 of 100 (Notable)
Goodwell Rsch STN	United States	Record daily precipitation	66.0 mm (2.6 in)	44 of 100 (Notable)
Woodward	United States	Record daily precipitation	43.9 mm (1.7 in)	43 of 100 (Notable)
Brule Island	United States	Record daily precipitation	55.9 mm (2.2 in)	43 of 100 (Notable)
Nuwara Eliya	Sri Lanka	Record high minimum temperature	15.5 C (59.9 F)	41 of 100 (Notable)
Umbarger	United States	Record daily precipitation	139.7 mm (5.5 in)	41 of 100 (Notable)
Huntingdon	Canada	Record high maximum temperature	31.7 C (89.1 F)	40 of 100 (Notable)
Chicoutimi	Canada	Record high maximum temperature	35.6 C (96.1 F)	40 of 100 (Notable)
Port Stanley	Canada	Record high maximum temperature	27.5 C (81.5 F)	39 of 100 (Notable)
Cambridge Galt Moe	Canada	Record high maximum temperature	30.5 C (86.9 F)	39 of 100 (Notable)
Okeene	United States	Record daily precipitation	38.9 mm (1.5 in)	37 of 100 (Notable)
Walters	United States	Record daily precipitation	91.4 mm (3.6 in)	37 of 100 (Notable)
Allakaket	United States	Record low minimum temperature	-9.4 C (15.1 F)	37 of 100 (Notable)
Indus 3 W	United States	Record daily precipitation	40.1 mm (1.6 in)	36 of 100 (Notable)
Brookings 2 NE	United States	Record daily precipitation	33.0 mm (1.3 in)	36 of 100 (Notable)
Tropic	United States	Record low minimum temperature	-7.8 C (18.0 F)	36 of 100 (Notable)
Lake Margaret Dam	Australia	Record daily precipitation	58.7 mm (2.3 in)	35 of 100 (Notable)
Sidney 1SSE	United States	Record high minimum temperature	18.9 C (66.0 F)	35 of 100 (Notable)
Kettle Falls	United States	Record daily precipitation	39.9 mm (1.6 in)	35 of 100 (Notable)
Cresco 1 NE	United States	Record high maximum temperature	32.8 C (91.0 F)	34 of 100 (Routine)
Cloquet	United States	Record high minimum temperature	16.7 C (62.1 F)	34 of 100 (Routine)
Oak Ridges	Canada	Record high maximum temperature	32.5 C (90.5 F)	33 of 100 (Routine)
Saint Johns	United States	Record high minimum temperature	19.4 C (66.9 F)	33 of 100 (Routine)
Standish 4NE	United States	Record high maximum temperature	30.0 C (86.0 F)	33 of 100 (Routine)
Windsor	United States	Record high maximum temperature	31.7 C (89.1 F)	33 of 100 (Routine)
Palisade	United States	Record daily precipitation	70.1 mm (2.8 in)	33 of 100 (Routine)
Ogdensburg 4 NE	United States	Record high maximum temperature	30.6 C (87.1 F)	33 of 100 (Routine)
Canyon	United States	Record daily precipitation	161.5 mm (6.4 in)	33 of 100 (Routine)
Lucknow	Canada	Record high maximum temperature	31.5 C (88.7 F)	32 of 100 (Routine)
Sigourney	United States	Record high minimum temperature	23.9 C (75.0 F)	32 of 100 (Routine)
Alliance 1WNW	United States	Record daily precipitation	35.6 mm (1.4 in)	32 of 100 (Routine)
West Bend	United States	Record high maximum temperature	31.7 C (89.1 F)	32 of 100 (Routine)
Tashkent	Uzbekistan	Record low minimum temperature	6.4 C (43.5 F)	32 of 100 (Routine)
Kapuskasing Cda	Canada	Record high minimum temperature	19.0 C (66.2 F)	31 of 100 (Routine)
Beatrice	Canada	Record high maximum temperature	30.0 C (86.0 F)	31 of 100 (Routine)
Montreal McGill	Canada	Record high maximum temperature	31.7 C (89.1 F)	31 of 100 (Routine)
Sandy Lake Dam Libby	United States	Record high minimum temperature	17.8 C (64.0 F)	31 of 100 (Routine)
Auburn	United States	Record high maximum temperature	31.1 C (88.0 F)	31 of 100 (Routine)
Toledo Blade	United States	Record high maximum temperature	34.4 C (93.9 F)	31 of 100 (Routine)
Beloit	United States	Record high maximum temperature	33.9 C (93.0 F)	31 of 100 (Routine)
Iroquois Falls	Canada	Record high minimum temperature	18.0 C (64.4 F)	30 of 100 (Routine)
Welland	Canada	Record high maximum temperature	31.5 C (88.7 F)	30 of 100 (Routine)
Woodstock	Canada	Record high maximum temperature	31.5 C (88.7 F)	30 of 100 (Routine)
Les Cedres	Canada	Record high maximum temperature	30.0 C (86.0 F)	30 of 100 (Routine)
Barrage Gouin	Canada	Record high maximum temperature	31.7 C (89.1 F)	30 of 100 (Routine)
Karlshamn	Sweden	Record high maximum temperature	24.5 C (76.1 F)	30 of 100 (Routine)
Homestead Exp STN	United States	Record low maximum temperature	25.0 C (77.0 F)	30 of 100 (Routine)
Fairfield	United States	Record high maximum temperature	33.3 C (91.9 F)	30 of 100 (Routine)
Park Falls Dnr HQ	United States	Record high minimum temperature	17.2 C (63.0 F)	30 of 100 (Routine)
New Liskeard	Canada	Record high minimum temperature	18.0 C (64.4 F)	29 of 100 (Routine)
Bancroft	Canada	Record high maximum temperature	31.0 C (87.8 F)	29 of 100 (Routine)
Catemaco	Mexico	Record low minimum temperature	12.8 C (55.0 F)	29 of 100 (Routine)
Duncan	United States	Record low minimum temperature	1.1 C (34.0 F)	29 of 100 (Routine)
Mackay Lost Rvr Rs	United States	Record low minimum temperature	-3.9 C (25.0 F)	29 of 100 (Routine)
White Hall 1 E	United States	Record high minimum temperature	21.1 C (70.0 F)	29 of 100 (Routine)
Plymouth Pwr Substn	United States	Record high maximum temperature	32.8 C (91.0 F)	29 of 100 (Routine)
St Joseph 3 N	United States	Record high minimum temperature	22.2 C (72.0 F)	29 of 100 (Routine)

Counts by Type and Timescale

814 records

Records set or tied on 27 May 1978 by type: Highest daily maximum 329, Lowest daily maximum 44, Highest daily minimum 211, Lowest daily minimum 65, Heaviest daily rainfall 163, Heaviest daily snowfall 2.

Records on 27 May 1978 by type
Record type	Records
Highest daily maximum	329
Lowest daily maximum	44
Highest daily minimum	211
Lowest daily minimum	65
Heaviest daily rainfall	163
Heaviest daily snowfall	2
Deepest snow cover	0

Records on 27 May 1978 by timescale: all-time 1, monthly 38, daily 775.

How Much Records Were Beaten By

615 broken records

Margins by which the 615 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 65.6. Ties are not counted.

Top 20 by Significance

27 May 1978

Top 20 records on 27 May 1978 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 May 1978	Bajanaul, KZ	monthly rain	44.4 mm (1.7 in)	15.5 mm (0.6 in)	17 years	59 of 100 (Notable)
27 May 1978	Farmington 3NW, US	daily rain	46.0 mm (1.8 in)	23.6 mm (0.9 in)	60 years	49 of 100 (Notable)
27 May 1978	Booker, US	daily rain	95.3 mm (3.8 in)	65.6 mm (2.6 in)	16 years	49 of 100 (Notable)
27 May 1978	Weatherford, US	monthly rain	153.9 mm (6.1 in)	33.0 mm (1.3 in)	27 years	45 of 100 (Notable)
27 May 1978	Goodwell Rsch STN, US	daily rain	66.0 mm (2.6 in)	37.6 mm (1.5 in)	21 years	44 of 100 (Notable)
27 May 1978	Woodward, US	daily rain	43.9 mm (1.7 in)	17.2 mm (0.7 in)	80 years	43 of 100 (Notable)
27 May 1978	Brule Island, US	daily rain	55.9 mm (2.2 in)	24.9 mm (1.0 in)	39 years	43 of 100 (Notable)
27 May 1978	Nuwara Eliya, LK	daily high min	15.5 C (59.9 F)	0.3 C (0.5 F)	105 years	41 of 100 (Notable)
27 May 1978	Umbarger, US	all-time rain	139.7 mm (5.5 in)	17.8 mm (0.7 in)	17 years	41 of 100 (Notable)
27 May 1978	Huntingdon, CA	daily high max	31.7 C (89.1 F)	0.6 C (1.1 F)	97 years	40 of 100 (Notable)
27 May 1978	Chicoutimi, CA	monthly high max	35.6 C (96.1 F)	0.6 C (1.1 F)	67 years	40 of 100 (Notable)
27 May 1978	Port Stanley, CA	daily high max	27.5 C (81.5 F)	0.3 C (0.5 F)	96 years	39 of 100 (Notable)
27 May 1978	Cambridge Galt Moe, CA	daily high max	30.5 C (86.9 F)	0.5 C (0.9 F)	96 years	39 of 100 (Notable)
27 May 1978	Okeene, US	daily rain	38.9 mm (1.5 in)	13.5 mm (0.5 in)	75 years	37 of 100 (Notable)
27 May 1978	Walters, US	daily rain	91.4 mm (3.6 in)	38.1 mm (1.5 in)	37 years	37 of 100 (Notable)
27 May 1978	Allakaket, US	daily low min	-9.4 C (15.1 F)	5.5 C (9.9 F)	68 years	37 of 100 (Notable)
27 May 1978	Indus 3 W, US	daily rain	40.1 mm (1.6 in)	18.3 mm (0.7 in)	19 years	36 of 100 (Notable)
27 May 1978	Brookings 2 NE, US	daily rain	33.0 mm (1.3 in)	8.9 mm (0.35 in)	69 years	36 of 100 (Notable)
27 May 1978	Tropic, US	daily low min	-7.8 C (18.0 F)	2.2 C (4.0 F)	78 years	36 of 100 (Notable)
27 May 1978	Lake Margaret Dam, AU	daily rain	58.7 mm (2.3 in)	19.8 mm (0.8 in)	56 years	35 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

1797 to 1978

Records set or tied on this calendar date in each year from 1797 to 1978. 1978 had 814 records.

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

Records on 05-27 in each year
Year	Records
1797	1
1817	1
1818	1
1834	2
1836	4
1839	1
1845	1
1846	1
1847	1
1849	1
1852	1
1858	1
1860	1
1863	1
1864	3
1868	4
1869	1
1874	1
1876	1
1879	3
1880	5
1881	2
1883	1
1884	1
1885	1
1886	1
1888	1
1889	3
1890	5
1891	2
1892	8
1893	5
1894	13
1895	4
1896	3
1897	1
1898	3
1899	2
1900	4
1901	7
1902	12
1903	7
1904	11
1905	7
1906	28
1907	23
1908	16
1909	7
1910	31
1911	53
1912	27
1913	19
1914	92
1915	63
1916	26
1917	23
1918	39
1919	38
1920	40
1921	56
1922	36
1923	86
1924	92
1925	291
1926	107
1927	183
1928	81
1929	195
1930	99
1931	367
1932	265
1933	284
1934	393
1935	128
1936	468
1937	298
1938	492
1939	312
1940	138
1941	436
1942	657
1943	160
1944	479
1945	272
1946	424
1947	485
1948	324
1949	366
1950	697
1951	578
1952	258
1953	603
1954	367
1955	571
1956	491
1957	367
1958	619
1959	449
1960	421
1961	1,504
1962	460
1963	421
1964	317
1965	652
1966	398
1967	492
1968	605
1969	850
1970	326
1971	612
1972	508
1973	943
1974	630
1975	404
1976	589
1977	663
1978	814
1979	899
1980	644
1981	891
1982	838
1983	1,253
1984	834
1985	873
1986	696
1987	1,037
1988	777
1989	904
1990	804
1991	1,429
1992	1,413
1993	835
1994	848
1995	815
1996	1,378
1997	919
1998	1,079
1999	876
2000	1,347
2001	898
2002	511
2003	918
2004	838
2005	1,094
2006	1,171
2007	886
2008	914
2009	858
2010	955
2011	1,055
2012	1,475
2013	607
2014	835
2015	537
2016	622
2017	541
2018	1,355
2019	960
2020	906
2021	414
2022	653
2023	405
2024	904
2025	761
2026	1,185

Download the Data

Data for records on 1978-05-27: 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	567
10 to 20	34
20 to 30	10
30 to 40	3
40 to 50	0
50 to 60	0
60 to 70	1