Weather Records on 27 May 1999

876 weather records were set or tied worldwide on 27 May 1999. Highest significance: Mumby, AU.

Key Facts for 27 May 1999

On 27 May 1999, 876 weather records were set or tied at long-record stations worldwide.
278 were record highs and 149 were record lows, counting maximum and minimum temperature.
By timescale, 11 were all-time records, 81 monthly and 784 daily.
Mumby set an all-time record daily precipitation of 165.0 mm (6.5 in) on 27 May 1999.
Across 164 earlier years (1797 to 2026) the same calendar date averaged 415 records.

Record Map

876 stations

876 station records on 27 May 1999 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 27 May 1999: highest significance records shown on the map
Station	Country	Type	Value	Significance
Mumby	Australia	Record daily precipitation	165.0 mm (6.5 in)	88 of 100 (Exceptional)
Balline	Australia	Record daily precipitation	186.4 mm (7.3 in)	86 of 100 (Exceptional)
Buntine East	Australia	Record daily precipitation	130.0 mm (5.1 in)	74 of 100 (Major)
Mingenew	Australia	Record daily precipitation	125.2 mm (4.9 in)	73 of 100 (Major)
Wubin	Australia	Record daily precipitation	75.8 mm (3.0 in)	73 of 100 (Major)
New Norcia	Australia	Record daily precipitation	53.0 mm (2.1 in)	73 of 100 (Major)
Lynton	Australia	Record daily precipitation	74.2 mm (2.9 in)	72 of 100 (Major)
Yuna	Australia	Record daily precipitation	94.8 mm (3.7 in)	72 of 100 (Major)
Wyalkatchem	Australia	Record daily precipitation	45.0 mm (1.8 in)	72 of 100 (Major)
Ajana	Australia	Record daily precipitation	83.0 mm (3.3 in)	71 of 100 (Major)
Gleneva	Australia	Record daily precipitation	91.2 mm (3.6 in)	71 of 100 (Major)
Dalwallinu North	Australia	Record daily precipitation	69.4 mm (2.7 in)	70 of 100 (Major)
Perenjori	Australia	Record daily precipitation	83.4 mm (3.3 in)	70 of 100 (Major)
Ytiniche	Australia	Record daily precipitation	82.0 mm (3.2 in)	69 of 100 (Major)
Manarra	Australia	Record daily precipitation	62.0 mm (2.4 in)	68 of 100 (Major)
Ogilvie	Australia	Record daily precipitation	117.0 mm (4.6 in)	68 of 100 (Major)
Pindar	Australia	Record daily precipitation	67.5 mm (2.7 in)	65 of 100 (Major)
Goomalling	Australia	Record daily precipitation	46.0 mm (1.8 in)	65 of 100 (Major)
Carnamah	Australia	Record daily precipitation	69.4 mm (2.7 in)	64 of 100 (Major)
Buntine	Australia	Record daily precipitation	72.6 mm (2.9 in)	63 of 100 (Major)
Manavi	Australia	Record daily precipitation	52.6 mm (2.1 in)	63 of 100 (Major)
Hakea	Australia	Record daily precipitation	72.2 mm (2.8 in)	63 of 100 (Major)
Hyde Park	Australia	Record daily precipitation	57.0 mm (2.2 in)	62 of 100 (Major)
Walebing	Australia	Record daily precipitation	50.2 mm (2.0 in)	62 of 100 (Major)
Koorda	Australia	Record daily precipitation	48.6 mm (1.9 in)	62 of 100 (Major)
Meckering	Australia	Record daily precipitation	45.4 mm (1.8 in)	62 of 100 (Major)
Round Hill	Australia	Record daily precipitation	53.2 mm (2.1 in)	61 of 100 (Major)
Konnongorring	Australia	Record daily precipitation	46.0 mm (1.8 in)	61 of 100 (Major)
Xantippe	Australia	Record daily precipitation	67.0 mm (2.6 in)	61 of 100 (Major)
Moora	Australia	Record daily precipitation	62.6 mm (2.5 in)	60 of 100 (Major)
Wongan Hills Res.Station	Australia	Record daily precipitation	55.2 mm (2.2 in)	60 of 100 (Major)
Yandanooka	Australia	Record daily precipitation	122.2 mm (4.8 in)	60 of 100 (Major)
Happy Valley	Australia	Record daily precipitation	47.2 mm (1.9 in)	60 of 100 (Major)
Strawberry North	Australia	Record daily precipitation	105.0 mm (4.1 in)	59 of 100 (Notable)
Busselton Shire	Australia	Record daily precipitation	67.6 mm (2.7 in)	59 of 100 (Notable)
Toodyay	Australia	Record daily precipitation	44.8 mm (1.8 in)	59 of 100 (Notable)
Northam	Australia	Record daily precipitation	41.4 mm (1.6 in)	58 of 100 (Notable)
Maya	Australia	Record daily precipitation	90.0 mm (3.5 in)	57 of 100 (Notable)
Wongan Hills	Australia	Record daily precipitation	43.2 mm (1.7 in)	57 of 100 (Notable)
Dunolly	Australia	Record daily precipitation	54.0 mm (2.1 in)	56 of 100 (Notable)
Kokardine	Australia	Record daily precipitation	61.4 mm (2.4 in)	56 of 100 (Notable)
Watheroo	Australia	Record daily precipitation	53.6 mm (2.1 in)	56 of 100 (Notable)
Eradu	Australia	Record daily precipitation	68.2 mm (2.7 in)	56 of 100 (Notable)
Bolgart	Australia	Record daily precipitation	50.4 mm (2.0 in)	56 of 100 (Notable)
Walgoolan North	Australia	Record daily precipitation	42.5 mm (1.7 in)	56 of 100 (Notable)
Ballidu	Australia	Record daily precipitation	54.0 mm (2.1 in)	55 of 100 (Notable)
Tenindewa Bindu	Australia	Record daily precipitation	75.0 mm (3.0 in)	55 of 100 (Notable)
Nungarin	Australia	Record daily precipitation	45.0 mm (1.8 in)	55 of 100 (Notable)
Canaan Farm	Australia	Record daily precipitation	44.4 mm (1.7 in)	55 of 100 (Notable)
Binnu	Australia	Record daily precipitation	92.6 mm (3.6 in)	54 of 100 (Notable)
Mallee Vale	Australia	Record daily precipitation	107.2 mm (4.2 in)	54 of 100 (Notable)
Yathroo	Australia	Record daily precipitation	82.0 mm (3.2 in)	54 of 100 (Notable)
Woogenellup	Australia	Record daily precipitation	31.6 mm (1.2 in)	54 of 100 (Notable)
Redwing	Australia	Record daily precipitation	45.0 mm (1.8 in)	54 of 100 (Notable)
Paynes Find	Australia	Record daily precipitation	33.6 mm (1.3 in)	53 of 100 (Notable)
Yoongarillup	Australia	Record daily precipitation	101.0 mm (4.0 in)	53 of 100 (Notable)
Burracoppin	Australia	Record daily precipitation	52.0 mm (2.0 in)	53 of 100 (Notable)
Ejanding	Australia	Record daily precipitation	53.8 mm (2.1 in)	53 of 100 (Notable)
Beria	Australia	Record daily precipitation	52.9 mm (2.1 in)	53 of 100 (Notable)
Mullewa	Australia	Record daily precipitation	98.2 mm (3.9 in)	52 of 100 (Notable)

Counts by Type and Timescale

876 records

Records set or tied on 27 May 1999 by type: Highest daily maximum 171, Lowest daily maximum 76, Highest daily minimum 107, Lowest daily minimum 73, Heaviest daily rainfall 445, Heaviest daily snowfall 3, Deepest snow cover 1.

Records on 27 May 1999 by type
Record type	Records
Highest daily maximum	171
Lowest daily maximum	76
Highest daily minimum	107
Lowest daily minimum	73
Heaviest daily rainfall	445
Heaviest daily snowfall	3
Deepest snow cover	1

Records on 27 May 1999 by timescale: all-time 11, monthly 81, daily 784.

How Much Records Were Beaten By

772 broken records

Margins by which the 772 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 635.0. Ties are not counted.

Top 20 by Significance

27 May 1999

Top 20 records on 27 May 1999 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 May 1999	Mumby, AU	all-time rain	165.0 mm (6.5 in)	64.2 mm (2.5 in)	65 years	88 of 100 (Exceptional)
27 May 1999	Balline, AU	all-time rain	186.4 mm (7.3 in)	54.1 mm (2.1 in)	65 years	86 of 100 (Exceptional)
27 May 1999	Buntine East, AU	all-time rain	130.0 mm (5.1 in)	35.5 mm (1.4 in)	38 years	74 of 100 (Major)
27 May 1999	Mingenew, AU	all-time rain	125.2 mm (4.9 in)	26.1 mm (1.0 in)	38 years	73 of 100 (Major)
27 May 1999	Wubin, AU	monthly rain	75.8 mm (3.0 in)	29.6 mm (1.2 in)	62 years	73 of 100 (Major)
27 May 1999	New Norcia, AU	daily rain	53.0 mm (2.1 in)	34.5 mm (1.4 in)	77 years	73 of 100 (Major)
27 May 1999	Lynton, AU	daily rain	74.2 mm (2.9 in)	43.7 mm (1.7 in)	84 years	72 of 100 (Major)
27 May 1999	Yuna, AU	daily rain	94.8 mm (3.7 in)	70.9 mm (2.8 in)	78 years	72 of 100 (Major)
27 May 1999	Wyalkatchem, AU	daily rain	45.0 mm (1.8 in)	29.0 mm (1.1 in)	77 years	72 of 100 (Major)
27 May 1999	Ajana, AU	daily rain	83.0 mm (3.3 in)	49.2 mm (1.9 in)	78 years	71 of 100 (Major)
27 May 1999	Gleneva, AU	daily rain	91.2 mm (3.6 in)	61.5 mm (2.4 in)	78 years	71 of 100 (Major)
27 May 1999	Dalwallinu North, AU	monthly rain	69.4 mm (2.7 in)	24.4 mm (1.0 in)	62 years	70 of 100 (Major)
27 May 1999	Perenjori, AU	daily rain	83.4 mm (3.3 in)	66.4 mm (2.6 in)	73 years	70 of 100 (Major)
27 May 1999	Ytiniche, AU	monthly rain	82.0 mm (3.2 in)	29.7 mm (1.2 in)	46 years	69 of 100 (Major)
27 May 1999	Manarra, AU	daily rain	62.0 mm (2.4 in)	41.9 mm (1.6 in)	65 years	68 of 100 (Major)
27 May 1999	Ogilvie, AU	all-time rain	117.0 mm (4.6 in)	17.9 mm (0.7 in)	72 years	68 of 100 (Major)
27 May 1999	Pindar, AU	monthly rain	67.5 mm (2.7 in)	28.6 mm (1.1 in)	30 years	65 of 100 (Major)
27 May 1999	Goomalling, AU	daily rain	46.0 mm (1.8 in)	23.1 mm (0.9 in)	73 years	65 of 100 (Major)
27 May 1999	Carnamah, AU	daily rain	69.4 mm (2.7 in)	48.6 mm (1.9 in)	46 years	64 of 100 (Major)
27 May 1999	Buntine, AU	monthly rain	72.6 mm (2.9 in)	21.8 mm (0.9 in)	62 years	63 of 100 (Major)

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 1999

Records set or tied on this calendar date in each year from 1797 to 1999. 1999 had 876 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 1999-05-27: 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 100	771
100 to 200	0
200 to 300	0
300 to 400	0
400 to 500	0
500 to 600	0
600 to 700	1