Weather Records on 27 May 1991

1,429 weather records were set or tied worldwide on 27 May 1991. Highest significance: Mt Morris 2W, US.

Key Facts for 27 May 1991

On 27 May 1991, 1,429 weather records were set or tied at long-record stations worldwide.
933 were record highs and 255 were record lows, counting maximum and minimum temperature.
By timescale, 7 were all-time records, 154 monthly and 1,268 daily.
Mt Morris 2W set a daily record precipitation of 29.5 mm (1.2 in) on 27 May 1991.
Across 164 earlier years (1797 to 2026) the same calendar date averaged 411 records.

Record Map

1,429 stations

1,429 station records on 27 May 1991 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 27 May 1991: highest significance records shown on the map
Station	Country	Type	Value	Significance
Mt Morris 2W	United States	Record daily precipitation	29.5 mm (1.2 in)	71 of 100 (Major)
Camden	United States	Record daily precipitation	90.2 mm (3.6 in)	67 of 100 (Major)
Highmarket 2W	United States	Record daily precipitation	121.9 mm (4.8 in)	67 of 100 (Major)
Pryshyb	Ukraine	Record daily precipitation	166.9 mm (6.6 in)	63 of 100 (Major)
Calhoun City	United States	Record daily precipitation	102.9 mm (4.1 in)	63 of 100 (Major)
Brewerton Lock 23	United States	Record daily precipitation	78.2 mm (3.1 in)	61 of 100 (Major)
Indian Lake 2SW	United States	Record daily precipitation	51.6 mm (2.0 in)	59 of 100 (Notable)
Kisinev	Moldova	Record daily precipitation	40.6 mm (1.6 in)	55 of 100 (Notable)
Nikolaev	Ukraine	Record daily precipitation	40.1 mm (1.6 in)	54 of 100 (Notable)
Baldwinsville	United States	Record daily precipitation	45.2 mm (1.8 in)	53 of 100 (Notable)
Ignacio Lopez Rayon	Mexico	Record low minimum temperature	15.0 C (59.0 F)	51 of 100 (Notable)
Kondopoga	Russia	Record daily precipitation	26.2 mm (1.0 in)	51 of 100 (Notable)
Mogzon	Russia	Record daily precipitation	25.6 mm (1.0 in)	51 of 100 (Notable)
Savannah 6 SW	United States	Record daily precipitation	119.1 mm (4.7 in)	50 of 100 (Notable)
Iasi	Romania	Record daily precipitation	68.2 mm (2.7 in)	49 of 100 (Notable)
Aginskoe	Russia	Record daily precipitation	41.4 mm (1.6 in)	49 of 100 (Notable)
Houston	United States	Record daily precipitation	112.5 mm (4.4 in)	49 of 100 (Notable)
New Albany	United States	Record daily precipitation	98.3 mm (3.9 in)	49 of 100 (Notable)
Arcade	United States	Record high minimum temperature	20.6 C (69.1 F)	49 of 100 (Notable)
Greeneville Exp STN	United States	Record high minimum temperature	22.8 C (73.0 F)	49 of 100 (Notable)
Griffiss AFB	United States	Record high minimum temperature	20.0 C (68.0 F)	49 of 100 (Notable)
La Plata 1 W	United States	Record high minimum temperature	22.8 C (73.0 F)	48 of 100 (Notable)
Leova	Moldova	Record daily precipitation	35.2 mm (1.4 in)	47 of 100 (Notable)
Karymskaja	Russia	Record daily precipitation	39.9 mm (1.6 in)	47 of 100 (Notable)
Sedlovaja	Russia	Record daily precipitation	54.8 mm (2.2 in)	47 of 100 (Notable)
Ackerman	United States	Record daily precipitation	102.9 mm (4.1 in)	47 of 100 (Notable)
Warsaw 6 SW	United States	Record daily precipitation	28.4 mm (1.1 in)	46 of 100 (Notable)
Hendersonville 1 NE	United States	Record high minimum temperature	20.0 C (68.0 F)	46 of 100 (Notable)
Pontotoc Exp STN	United States	Record daily precipitation	106.7 mm (4.2 in)	45 of 100 (Notable)
Lowville	United States	Record daily precipitation	30.5 mm (1.2 in)	44 of 100 (Notable)
Morrisville 6 SW	United States	Record high minimum temperature	20.0 C (68.0 F)	43 of 100 (Notable)
Cullowhee	United States	Record high minimum temperature	20.0 C (68.0 F)	43 of 100 (Notable)
Morgantown Muni AP	United States	Record high minimum temperature	20.6 C (69.1 F)	43 of 100 (Notable)
Dalby Post Office	Australia	Record high maximum temperature	27.7 C (81.9 F)	42 of 100 (Notable)
Hvar	Croatia	Record low maximum temperature	19.0 C (66.2 F)	42 of 100 (Notable)
Brooksville Chin Hill	United States	Record daily precipitation	89.2 mm (3.5 in)	42 of 100 (Notable)
Booneville	United States	Record daily precipitation	185.2 mm (7.3 in)	42 of 100 (Notable)
Pontotoc	United States	Record daily precipitation	124.2 mm (4.9 in)	42 of 100 (Notable)
Sodus 1W	United States	Record daily precipitation	29.7 mm (1.2 in)	42 of 100 (Notable)
Mt Airy 2 W	United States	Record high minimum temperature	21.7 C (71.1 F)	42 of 100 (Notable)
Asheville	United States	Record high minimum temperature	20.6 C (69.1 F)	42 of 100 (Notable)
Temoaya	Mexico	Record daily precipitation	30.0 mm (1.2 in)	41 of 100 (Notable)
Bucuresti Filaret	Romania	Record daily precipitation	33.4 mm (1.3 in)	41 of 100 (Notable)
Evart	United States	Record daily precipitation	52.6 mm (2.1 in)	41 of 100 (Notable)
Dickson	United States	Record daily precipitation	125.5 mm (4.9 in)	40 of 100 (Notable)
Waycross 4 NE	United States	Record daily precipitation	45.5 mm (1.8 in)	39 of 100 (Notable)
Pana	United States	Record high maximum temperature	38.3 C (100.9 F)	39 of 100 (Notable)
Bagdarin	Russia	Record daily precipitation	28.4 mm (1.1 in)	38 of 100 (Notable)
Carrollton Lock 1	United States	Record high minimum temperature	21.1 C (70.0 F)	38 of 100 (Notable)
Auburn	United States	Record high minimum temperature	20.0 C (68.0 F)	38 of 100 (Notable)
Big Moose 3 SE	United States	Record daily precipitation	42.4 mm (1.7 in)	38 of 100 (Notable)
Skaneateles	United States	Record daily precipitation	29.2 mm (1.1 in)	38 of 100 (Notable)
Bucyrus	United States	Record high minimum temperature	20.6 C (69.1 F)	38 of 100 (Notable)
Hawley 1 E	United States	Record high minimum temperature	16.7 C (62.1 F)	38 of 100 (Notable)
Bjelasnica	Bosnia and Herzegovina	Record low minimum temperature	-5.0 C (23.0 F)	37 of 100 (Notable)
Regensburg	Germany	Record low minimum temperature	1.6 C (34.9 F)	37 of 100 (Notable)
San Luis San Pedro	Mexico	Record high maximum temperature	40.6 C (105.1 F)	37 of 100 (Notable)
Mt Sterling	United States	Record high minimum temperature	20.6 C (69.1 F)	37 of 100 (Notable)
Hemlock	United States	Record high minimum temperature	23.3 C (73.9 F)	37 of 100 (Notable)
Centerville Water Pl	United States	Record daily precipitation	157.5 mm (6.2 in)	37 of 100 (Notable)

Counts by Type and Timescale

1,429 records

Records set or tied on 27 May 1991 by type: Highest daily maximum 234, Lowest daily maximum 93, Highest daily minimum 699, Lowest daily minimum 162, Heaviest daily rainfall 234, Heaviest daily snowfall 5, Deepest snow cover 2.

Records on 27 May 1991 by type
Record type	Records
Highest daily maximum	234
Lowest daily maximum	93
Highest daily minimum	699
Lowest daily minimum	162
Heaviest daily rainfall	234
Heaviest daily snowfall	5
Deepest snow cover	2

Records on 27 May 1991 by timescale: all-time 7, monthly 154, daily 1,268.

How Much Records Were Beaten By

1,029 broken records

Margins by which the 1,029 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 87.7. Ties are not counted.

Top 20 by Significance

27 May 1991

Top 20 records on 27 May 1991 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 May 1991	Mt Morris 2W, US	daily rain	29.5 mm (1.2 in)	21.9 mm (0.9 in)	97 years	71 of 100 (Major)
27 May 1991	Camden, US	monthly rain	90.2 mm (3.6 in)	43.0 mm (1.7 in)	44 years	67 of 100 (Major)
27 May 1991	Highmarket 2W, US	monthly rain	121.9 mm (4.8 in)	53.6 mm (2.1 in)	39 years	67 of 100 (Major)
27 May 1991	Pryshyb, UA	all-time rain	166.9 mm (6.6 in)	51.8 mm (2.0 in)	0 years	63 of 100 (Major)
27 May 1991	Calhoun City, US	daily rain	102.9 mm (4.1 in)	55.1 mm (2.2 in)	73 years	63 of 100 (Major)
27 May 1991	Brewerton Lock 23, US	monthly rain	78.2 mm (3.1 in)	32.5 mm (1.3 in)	19 years	61 of 100 (Major)
27 May 1991	Indian Lake 2SW, US	daily rain	51.6 mm (2.0 in)	21.1 mm (0.8 in)	84 years	59 of 100 (Notable)
27 May 1991	Kisinev, MD	daily rain	40.6 mm (1.6 in)	13.1 mm (0.5 in)	84 years	55 of 100 (Notable)
27 May 1991	Nikolaev, UA	daily rain	40.1 mm (1.6 in)	23.1 mm (0.9 in)	36 years	54 of 100 (Notable)
27 May 1991	Baldwinsville, US	daily rain	45.2 mm (1.8 in)	24.6 mm (1.0 in)	37 years	53 of 100 (Notable)
27 May 1991	Ignacio Lopez Rayon, MX	daily low min	15.0 C (59.0 F)	6.7 C (12.1 F)	26 years	51 of 100 (Notable)
27 May 1991	Kondopoga, RU	daily rain	26.2 mm (1.0 in)	16.0 mm (0.6 in)	38 years	51 of 100 (Notable)
27 May 1991	Mogzon, RU	daily rain	25.6 mm (1.0 in)	19.8 mm (0.8 in)	21 years	51 of 100 (Notable)
27 May 1991	Savannah 6 SW, US	daily rain	119.1 mm (4.7 in)	55.9 mm (2.2 in)	17 years	50 of 100 (Notable)
27 May 1991	Iasi, RO	monthly rain	68.2 mm (2.7 in)	21.2 mm (0.8 in)	17 years	49 of 100 (Notable)
27 May 1991	Aginskoe, RU	daily rain	41.4 mm (1.6 in)	39.3 mm (1.5 in)	16 years	49 of 100 (Notable)
27 May 1991	Houston, US	daily rain	112.5 mm (4.4 in)	74.9 mm (2.9 in)	16 years	49 of 100 (Notable)
27 May 1991	New Albany, US	daily rain	98.3 mm (3.9 in)	67.8 mm (2.7 in)	16 years	49 of 100 (Notable)
27 May 1991	Arcade, US	monthly high min	20.6 C (69.1 F)	1.2 C (2.2 F)	95 years	49 of 100 (Notable)
27 May 1991	Greeneville Exp STN, US	monthly high min	22.8 C (73.0 F)	0.6 C (1.1 F)	94 years	49 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 1991

Records set or tied on this calendar date in each year from 1797 to 1991. 1991 had 1,429 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 1991-05-27: 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 20	991
20 to 40	27
40 to 60	7
60 to 80	3
80 to 100	1