Weather Records on 27 May 2015

537 weather records were set or tied worldwide on 27 May 2015. Highest significance: Idjevan, AM.

Key Facts for 27 May 2015

On 27 May 2015, 537 weather records were set or tied at long-record stations worldwide.
327 were record highs and 48 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 26 monthly and 510 daily.
Idjevan set a monthly record daily precipitation of 99.1 mm (3.9 in) on 27 May 2015.
Across 164 earlier years (1797 to 2026) the same calendar date averaged 417 records.

Record Map

537 stations

537 station records on 27 May 2015 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 27 May 2015: highest significance records shown on the map
Station	Country	Type	Value	Significance
Idjevan	Armenia	Record daily precipitation	99.1 mm (3.9 in)	67 of 100 (Major)
Portage Wwtp	United States	Record daily precipitation	58.9 mm (2.3 in)	63 of 100 (Major)
Brest	Belarus	Record daily precipitation	50.0 mm (2.0 in)	53 of 100 (Notable)
Benkelman 1N	United States	Record daily precipitation	94.0 mm (3.7 in)	52 of 100 (Notable)
Trempealeau Dam 6	United States	Record daily precipitation	50.0 mm (2.0 in)	47 of 100 (Notable)
Ponce 4 E	Puerto Rico [United States]	Record low minimum temperature	16.7 C (62.1 F)	46 of 100 (Notable)
Canton 4 SE	United States	Record high minimum temperature	20.6 C (69.1 F)	46 of 100 (Notable)
Neillsville 3ESE	United States	Record daily precipitation	44.5 mm (1.8 in)	45 of 100 (Notable)
Baranovichi	Belarus	Record daily precipitation	32.0 mm (1.3 in)	44 of 100 (Notable)
Valdosta 2 S	United States	Record daily precipitation	28.2 mm (1.1 in)	43 of 100 (Notable)
Ogdensburg 4 NE	United States	Record high minimum temperature	19.4 C (66.9 F)	43 of 100 (Notable)
Waverly	United States	Record high minimum temperature	18.3 C (64.9 F)	43 of 100 (Notable)
Towanda 1 S	United States	Record high minimum temperature	20.0 C (68.0 F)	43 of 100 (Notable)
Indian Lake 2SW	United States	Record high minimum temperature	16.1 C (61.0 F)	42 of 100 (Notable)
Lowville	United States	Record high minimum temperature	18.9 C (66.0 F)	42 of 100 (Notable)
Dull Ctr 1SE	United States	Record daily precipitation	32.5 mm (1.3 in)	42 of 100 (Notable)
Daytona Beach	United States	Record high minimum temperature	26.1 C (79.0 F)	41 of 100 (Notable)
Minnesota City Dam 5	United States	Record daily precipitation	39.6 mm (1.6 in)	41 of 100 (Notable)
Carthage	United States	Record daily precipitation	63.2 mm (2.5 in)	41 of 100 (Notable)
Glenville	United States	Record high minimum temperature	18.3 C (64.9 F)	41 of 100 (Notable)
Hanover	United States	Record high maximum temperature	33.3 C (91.9 F)	40 of 100 (Notable)
Cornwall	United States	Record high minimum temperature	21.7 C (71.1 F)	40 of 100 (Notable)
Snake Rvr	United States	Record high minimum temperature	5.0 C (41.0 F)	39 of 100 (Notable)
Hawkins	United States	Record daily precipitation	76.7 mm (3.0 in)	38 of 100 (Notable)
Coconut Is 840.1	United States	Record daily precipitation	36.8 mm (1.4 in)	38 of 100 (Notable)
Chalk Creek #1	United States	Record daily precipitation	30.5 mm (1.2 in)	38 of 100 (Notable)
Tikanlik	China	Record daily precipitation	30.0 mm (1.2 in)	37 of 100 (Notable)
Presque Isle	United States	Record high minimum temperature	16.7 C (62.1 F)	37 of 100 (Notable)
Big Bay 1NW	United States	Record daily precipitation	28.7 mm (1.1 in)	37 of 100 (Notable)
Mineola	United States	Record daily precipitation	92.2 mm (3.6 in)	37 of 100 (Notable)
Allatoona Dam 2	United States	Record daily precipitation	53.3 mm (2.1 in)	36 of 100 (Notable)
Marshall	United States	Record daily precipitation	107.7 mm (4.2 in)	36 of 100 (Notable)
Hilo Intl AP 87	United States	Record low maximum temperature	22.8 C (73.0 F)	36 of 100 (Notable)
Johnston 4 SW	United States	Record daily precipitation	58.4 mm (2.3 in)	35 of 100 (Notable)
Montello Wwtp	United States	Record daily precipitation	63.0 mm (2.5 in)	35 of 100 (Notable)
Madison 3NNW	United States	Record high minimum temperature	19.4 C (66.9 F)	34 of 100 (Routine)
Irako	Japan	Record high maximum temperature	31.3 C (88.3 F)	33 of 100 (Routine)
Wilmington Porter Rsch	United States	Record high minimum temperature	20.6 C (69.1 F)	33 of 100 (Routine)
Camden	United States	Record high minimum temperature	20.0 C (68.0 F)	33 of 100 (Routine)
Watertown	United States	Record high minimum temperature	20.6 C (69.1 F)	33 of 100 (Routine)
Saluda	United States	Record daily precipitation	63.5 mm (2.5 in)	33 of 100 (Routine)
Athens	United States	Record daily precipitation	25.9 mm (1.0 in)	33 of 100 (Routine)
Woodland	United States	Record high minimum temperature	13.9 C (57.0 F)	32 of 100 (Routine)
Seminole	United States	Record low minimum temperature	7.2 C (45.0 F)	32 of 100 (Routine)
Lyntupy	Belarus	Record daily precipitation	35.1 mm (1.4 in)	31 of 100 (Routine)
Kagoshima	Japan	Record high maximum temperature	31.7 C (89.1 F)	31 of 100 (Routine)
Winona Dam 5 A	United States	Record daily precipitation	35.8 mm (1.4 in)	31 of 100 (Routine)
Marlin	United States	Record low minimum temperature	11.7 C (53.1 F)	31 of 100 (Routine)
Cedar Falls Hydro Plt	United States	Record daily precipitation	34.0 mm (1.3 in)	31 of 100 (Routine)
Big Delta AP	United States	Record high minimum temperature	12.2 C (54.0 F)	31 of 100 (Routine)
Waucoma 1WNW	United States	Record daily precipitation	38.1 mm (1.5 in)	30 of 100 (Routine)
Mt Sunapee	United States	Record high minimum temperature	19.4 C (66.9 F)	30 of 100 (Routine)
Genoa Dam 8	United States	Record daily precipitation	29.5 mm (1.2 in)	30 of 100 (Routine)
Lynxville Dam 9	United States	Record daily precipitation	36.8 mm (1.4 in)	30 of 100 (Routine)
Columbus	United States	Record daily precipitation	61.5 mm (2.4 in)	29 of 100 (Routine)
Gouverneur 3 NW	United States	Record high minimum temperature	18.3 C (64.9 F)	29 of 100 (Routine)
Livingston 2 NNE	United States	Record daily precipitation	33.0 mm (1.3 in)	29 of 100 (Routine)
Burlington Intl AP	United States	Record high minimum temperature	21.1 C (70.0 F)	29 of 100 (Routine)
Puottaure	Sweden	Record daily precipitation	26.9 mm (1.1 in)	28 of 100 (Routine)
Sandusky	United States	Record high minimum temperature	19.4 C (66.9 F)	28 of 100 (Routine)

Counts by Type and Timescale

537 records

Records set or tied on 27 May 2015 by type: Highest daily maximum 122, Lowest daily maximum 19, Highest daily minimum 205, Lowest daily minimum 29, Heaviest daily rainfall 157, Heaviest daily snowfall 2, Deepest snow cover 3.

Records on 27 May 2015 by type
Record type	Records
Highest daily maximum	122
Lowest daily maximum	19
Highest daily minimum	205
Lowest daily minimum	29
Heaviest daily rainfall	157
Heaviest daily snowfall	2
Deepest snow cover	3

Records on 27 May 2015 by timescale: all-time 1, monthly 26, daily 510.

How Much Records Were Beaten By

424 broken records

Margins by which the 424 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 330.0. Ties are not counted.

Top 20 by Significance

27 May 2015

Top 20 records on 27 May 2015 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 May 2015	Idjevan, AM	monthly rain	99.1 mm (3.9 in)	53.2 mm (2.1 in)	27 years	67 of 100 (Major)
27 May 2015	Portage Wwtp, US	daily rain	58.9 mm (2.3 in)	23.3 mm (0.9 in)	118 years	63 of 100 (Major)
27 May 2015	Brest, BY	daily rain	50.0 mm (2.0 in)	27.5 mm (1.1 in)	20 years	53 of 100 (Notable)
27 May 2015	Benkelman 1N, US	daily rain	94.0 mm (3.7 in)	42.4 mm (1.7 in)	18 years	52 of 100 (Notable)
27 May 2015	Trempealeau Dam 6, US	daily rain	50.0 mm (2.0 in)	17.5 mm (0.7 in)	77 years	47 of 100 (Notable)
27 May 2015	Ponce 4 E, PR	daily low min	16.7 C (62.1 F)	1.1 C (2.0 F)	113 years	46 of 100 (Notable)
27 May 2015	Canton 4 SE, US	monthly high min	20.6 C (69.1 F)	0.6 C (1.1 F)	85 years	46 of 100 (Notable)
27 May 2015	Neillsville 3ESE, US	daily rain	44.5 mm (1.8 in)	5.9 mm (0.23 in)	100 years	45 of 100 (Notable)
27 May 2015	Baranovichi, BY	daily rain	32.0 mm (1.3 in)	16.1 mm (0.6 in)	50 years	44 of 100 (Notable)
27 May 2015	Valdosta 2 S, US	daily rain	28.2 mm (1.1 in)	9.9 mm (0.39 in)	92 years	43 of 100 (Notable)
27 May 2015	Ogdensburg 4 NE, US	daily high min	19.4 C (66.9 F)	1.6 C (2.9 F)	106 years	43 of 100 (Notable)
27 May 2015	Waverly, US	daily high min	18.3 C (64.9 F)	1.6 C (2.9 F)	100 years	43 of 100 (Notable)
27 May 2015	Towanda 1 S, US	daily high min	20.0 C (68.0 F)	1.7 C (3.1 F)	100 years	43 of 100 (Notable)
27 May 2015	Indian Lake 2SW, US	daily high min	16.1 C (61.0 F)	1.1 C (2.0 F)	106 years	42 of 100 (Notable)
27 May 2015	Lowville, US	daily high min	18.9 C (66.0 F)	1.1 C (2.0 F)	100 years	42 of 100 (Notable)
27 May 2015	Dull Ctr 1SE, US	daily rain	32.5 mm (1.3 in)	7.1 mm (0.28 in)	84 years	42 of 100 (Notable)
27 May 2015	Daytona Beach, US	daily high min	26.1 C (79.0 F)	2.2 C (4.0 F)	85 years	41 of 100 (Notable)
27 May 2015	Minnesota City Dam 5, US	daily rain	39.6 mm (1.6 in)	16.5 mm (0.6 in)	60 years	41 of 100 (Notable)
27 May 2015	Carthage, US	daily rain	63.2 mm (2.5 in)	31.7 mm (1.2 in)	49 years	41 of 100 (Notable)
27 May 2015	Glenville, US	daily high min	18.3 C (64.9 F)	0.5 C (0.9 F)	105 years	41 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 2015

Records set or tied on this calendar date in each year from 1797 to 2015. 2015 had 537 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 2015-05-27: 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 50	420
50 to 100	2
100 to 150	1
150 to 200	0
200 to 250	0
250 to 300	0
300 to 350	1