Weather Records on 27 September 1999

1,059 weather records were set or tied worldwide on 27 September 1999. Highest significance: Ico, BR.

Key Facts for 27 September 1999

On 27 September 1999, 1,059 weather records were set or tied at long-record stations worldwide.
478 were record highs and 225 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 36 monthly and 1,023 daily.
Ico set a daily record precipitation of 25.0 mm (1.0 in) on 27 September 1999.
Across 154 earlier years (1799 to 2026) the same calendar date averaged 447 records.

Record Map

1,059 stations

1,059 station records on 27 September 1999 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 27 September 1999: highest significance records shown on the map
Station	Country	Type	Value	Significance
Ico	Brazil	Record daily precipitation	25.0 mm (1.0 in)	66 of 100 (Major)
West Terschelling	Netherlands	Record daily precipitation	59.0 mm (2.3 in)	66 of 100 (Major)
Mittagong (Beatrice Street)	Australia	Record daily precipitation	45.8 mm (1.8 in)	64 of 100 (Major)
Denman (Palace Street)	Australia	Record daily precipitation	50.4 mm (2.0 in)	63 of 100 (Major)
Camden (Brownlow Hill)	Australia	Record daily precipitation	59.0 mm (2.3 in)	60 of 100 (Major)
Burrawang (Range Street)	Australia	Record daily precipitation	75.4 mm (3.0 in)	60 of 100 (Major)
Mittagong (Kia Ora)	Australia	Record daily precipitation	50.0 mm (2.0 in)	58 of 100 (Notable)
Baldwin	United States	Record daily precipitation	104.1 mm (4.1 in)	58 of 100 (Notable)
Union Grove Wwtp	United States	Record daily precipitation	69.9 mm (2.8 in)	57 of 100 (Notable)
Talwood State School	Australia	Record daily precipitation	56.6 mm (2.2 in)	55 of 100 (Notable)
Berambing	Australia	Record daily precipitation	88.6 mm (3.5 in)	55 of 100 (Notable)
Bellbrook (East Street)	Australia	Record daily precipitation	42.6 mm (1.7 in)	54 of 100 (Notable)
Krasnye Baki	Russia	Record daily precipitation	44.7 mm (1.8 in)	53 of 100 (Notable)
McKinley Park	United States	Record daily snowfall	33.0 cm (13.0 in)	53 of 100 (Notable)
Oost Vlieland	Netherlands	Record daily precipitation	59.3 mm (2.3 in)	51 of 100 (Notable)
Katoomba (Murri St)	Australia	Record daily precipitation	56.8 mm (2.2 in)	49 of 100 (Notable)
Clinton Wwtp	United States	Record daily precipitation	55.9 mm (2.2 in)	48 of 100 (Notable)
Formerum	Netherlands	Record daily precipitation	47.4 mm (1.9 in)	47 of 100 (Notable)
Boomi (Barwon St)	Australia	Record daily precipitation	67.0 mm (2.6 in)	46 of 100 (Notable)
Oberon (Jenolan Caves)	Australia	Record daily precipitation	28.0 mm (1.1 in)	46 of 100 (Notable)
Joadja (Greenwalk)	Australia	Record daily precipitation	57.0 mm (2.2 in)	46 of 100 (Notable)
Lake City 2 E	United States	Record daily precipitation	56.6 mm (2.2 in)	46 of 100 (Notable)
Geneseo	United States	Record daily precipitation	71.6 mm (2.8 in)	46 of 100 (Notable)
Petropavlovskij Majak	Russia	Record daily precipitation	48.1 mm (1.9 in)	45 of 100 (Notable)
Bilpin (Fern Grove)	Australia	Record daily precipitation	71.2 mm (2.8 in)	44 of 100 (Notable)
Trenton	United States	Record daily precipitation	61.5 mm (2.4 in)	44 of 100 (Notable)
Bundanoon Bowling Club	Australia	Record daily precipitation	44.2 mm (1.7 in)	43 of 100 (Notable)
Harbor Beach 1 SSE	United States	Record high maximum temperature	28.9 C (84.0 F)	43 of 100 (Notable)
Katoota	Australia	Record daily precipitation	38.0 mm (1.5 in)	42 of 100 (Notable)
Maroota ( Roberts Road)	Australia	Record daily precipitation	40.0 mm (1.6 in)	42 of 100 (Notable)
Nowra Treatment Works	Australia	Record daily precipitation	30.0 mm (1.2 in)	42 of 100 (Notable)
Ashton 1N	United States	Record low minimum temperature	-8.9 C (16.0 F)	42 of 100 (Notable)
Buffalo	United States	Record low maximum temperature	5.6 C (42.1 F)	42 of 100 (Notable)
High Range (Wanganderry)	Australia	Record daily precipitation	38.8 mm (1.5 in)	41 of 100 (Notable)
Gallatin 1W	United States	Record daily precipitation	61.2 mm (2.4 in)	41 of 100 (Notable)
West Bend	United States	Record daily precipitation	29.0 mm (1.1 in)	41 of 100 (Notable)
Moose	United States	Record snow depth	22.9 cm (9.0 in)	41 of 100 (Notable)
Moline Quad City Intl AP	United States	Record daily precipitation	52.1 mm (2.1 in)	41 of 100 (Notable)
Beira	Mozambique	Record high maximum temperature	35.6 C (96.1 F)	40 of 100 (Notable)
Bosque del Apache	United States	Record high maximum temperature	37.2 C (99.0 F)	40 of 100 (Notable)
Ashland	United States	Record low minimum temperature	-0.6 C (30.9 F)	40 of 100 (Notable)
Nambucca Heads Bowling Club	Australia	Record daily precipitation	40.4 mm (1.6 in)	39 of 100 (Notable)
Cataract Dam	Australia	Record daily precipitation	36.6 mm (1.4 in)	39 of 100 (Notable)
Richlands (Bouverie)	Australia	Record daily precipitation	37.0 mm (1.5 in)	39 of 100 (Notable)
Vacaville	United States	Record high minimum temperature	22.8 C (73.0 F)	39 of 100 (Notable)
Yates Ctr	United States	Record daily precipitation	70.6 mm (2.8 in)	39 of 100 (Notable)
Princeton	United States	Record daily precipitation	58.4 mm (2.3 in)	39 of 100 (Notable)
Hohenwald	United States	Record high minimum temperature	20.0 C (68.0 F)	39 of 100 (Notable)
Doyles Creek (Wood Park)	Australia	Record daily precipitation	28.2 mm (1.1 in)	38 of 100 (Notable)
Foxground Road	Australia	Record daily precipitation	67.0 mm (2.6 in)	38 of 100 (Notable)
Lawrence	United States	Record daily precipitation	56.9 mm (2.2 in)	38 of 100 (Notable)
Ann Arbor U of Mich	United States	Record high maximum temperature	30.6 C (87.1 F)	38 of 100 (Notable)
Elephant Butte Dam	United States	Record high minimum temperature	19.4 C (66.9 F)	38 of 100 (Notable)
Jal	United States	Record high minimum temperature	22.8 C (73.0 F)	38 of 100 (Notable)
Condon	United States	Record low minimum temperature	-5.6 C (21.9 F)	38 of 100 (Notable)
Northport	United States	Record low minimum temperature	-3.3 C (26.1 F)	38 of 100 (Notable)
Mittagong (High Range)	Australia	Record daily precipitation	32.4 mm (1.3 in)	37 of 100 (Notable)
Nordby (Fano)	Denmark	Record daily precipitation	42.9 mm (1.7 in)	37 of 100 (Notable)
Folkston 9 SW	United States	Record daily precipitation	96.3 mm (3.8 in)	37 of 100 (Notable)
Fairfield	United States	Record daily precipitation	38.1 mm (1.5 in)	37 of 100 (Notable)

Counts by Type and Timescale

1,059 records

Records set or tied on 27 September 1999 by type: Highest daily maximum 235, Lowest daily maximum 88, Highest daily minimum 243, Lowest daily minimum 137, Heaviest daily rainfall 337, Heaviest daily snowfall 14, Deepest snow cover 5.

Records on 27 September 1999 by type
Record type	Records
Highest daily maximum	235
Lowest daily maximum	88
Highest daily minimum	243
Lowest daily minimum	137
Heaviest daily rainfall	337
Heaviest daily snowfall	14
Deepest snow cover	5

Records on 27 September 1999 by timescale: all-time 0, monthly 36, daily 1,023.

How Much Records Were Beaten By

827 broken records

Margins by which the 827 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 228.0. Ties are not counted.

Top 20 by Significance

27 September 1999

Top 20 records on 27 September 1999 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 September 1999	Ico, BR	daily rain	25.0 mm (1.0 in)	25.0 mm (1.0 in)	86 years	66 of 100 (Major)
27 September 1999	West Terschelling, NL	monthly rain	59.0 mm (2.3 in)	10.2 mm (0.4 in)	112 years	66 of 100 (Major)
27 September 1999	Mittagong (Beatrice Street), AU	daily rain	45.8 mm (1.8 in)	26.0 mm (1.0 in)	103 years	64 of 100 (Major)
27 September 1999	Denman (Palace Street), AU	daily rain	50.4 mm (2.0 in)	21.2 mm (0.8 in)	115 years	63 of 100 (Major)
27 September 1999	Camden (Brownlow Hill), AU	daily rain	59.0 mm (2.3 in)	38.2 mm (1.5 in)	36 years	60 of 100 (Major)
27 September 1999	Burrawang (Range Street), AU	daily rain	75.4 mm (3.0 in)	43.9 mm (1.7 in)	88 years	60 of 100 (Major)
27 September 1999	Mittagong (Kia Ora), AU	daily rain	50.0 mm (2.0 in)	24.6 mm (1.0 in)	88 years	58 of 100 (Notable)
27 September 1999	Baldwin, US	monthly rain	104.1 mm (4.1 in)	24.1 mm (0.9 in)	54 years	58 of 100 (Notable)
27 September 1999	Union Grove Wwtp, US	daily rain	69.9 mm (2.8 in)	52.9 mm (2.1 in)	40 years	57 of 100 (Notable)
27 September 1999	Talwood State School, AU	daily rain	56.6 mm (2.2 in)	24.3 mm (1.0 in)	72 years	55 of 100 (Notable)
27 September 1999	Berambing, AU	daily rain	88.6 mm (3.5 in)	48.7 mm (1.9 in)	36 years	55 of 100 (Notable)
27 September 1999	Bellbrook (East Street), AU	daily rain	42.6 mm (1.7 in)	23.3 mm (0.9 in)	94 years	54 of 100 (Notable)
27 September 1999	Krasnye Baki, RU	daily rain	44.7 mm (1.8 in)	25.1 mm (1.0 in)	30 years	53 of 100 (Notable)
27 September 1999	McKinley Park, US	daily snowfall	33.0 cm (13.0 in)	22.8 cm (9.0 in)	40 years	53 of 100 (Notable)
27 September 1999	Oost Vlieland, NL	monthly rain	59.3 mm (2.3 in)	19.1 mm (0.8 in)	26 years	51 of 100 (Notable)
27 September 1999	Katoomba (Murri St), AU	daily rain	56.8 mm (2.2 in)	11.8 mm (0.5 in)	103 years	49 of 100 (Notable)
27 September 1999	Clinton Wwtp, US	daily rain	55.9 mm (2.2 in)	41.7 mm (1.6 in)	44 years	48 of 100 (Notable)
27 September 1999	Formerum, NL	daily rain	47.4 mm (1.9 in)	38.1 mm (1.5 in)	10 years	47 of 100 (Notable)
27 September 1999	Boomi (Barwon St), AU	monthly rain	67.0 mm (2.6 in)	10.9 mm (0.4 in)	50 years	46 of 100 (Notable)
27 September 1999	Oberon (Jenolan Caves), AU	daily rain	28.0 mm (1.1 in)	6.4 mm (0.25 in)	96 years	46 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

1799 to 1999

Records set or tied on this calendar date in each year from 1799 to 1999. 1999 had 1,059 records.

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

Records on 09-27 in each year
Year	Records
1799	1
1828	1
1836	2
1847	1
1851	1
1854	2
1855	2
1859	2
1866	2
1867	3
1874	1
1875	1
1877	2
1880	1
1881	4
1882	1
1885	5
1887	1
1890	3
1891	1
1892	1
1893	1
1894	5
1895	6
1896	1
1897	2
1898	4
1899	1
1900	5
1901	3
1902	12
1903	7
1904	12
1905	21
1906	21
1907	9
1908	36
1909	17
1910	20
1911	31
1912	25
1913	27
1914	24
1915	80
1916	57
1917	41
1918	58
1919	45
1920	54
1921	26
1922	111
1923	125
1924	115
1925	129
1926	581
1927	244
1928	288
1929	225
1930	178
1931	222
1932	194
1933	559
1934	298
1935	319
1936	435
1937	309
1938	366
1939	572
1940	706
1941	257
1942	1,353
1943	503
1944	323
1945	475
1946	387
1947	813
1948	405
1949	407
1950	223
1951	480
1952	539
1953	567
1954	507
1955	386
1956	825
1957	644
1958	585
1959	582
1960	337
1961	376
1962	352
1963	849
1964	724
1965	688
1966	426
1967	502
1968	286
1969	233
1970	773
1971	762
1972	989
1973	1,031
1974	408
1975	790
1976	905
1977	852
1978	773
1979	741
1980	559
1981	680
1982	1,076
1983	791
1984	1,297
1985	661
1986	1,772
1987	1,013
1988	494
1989	852
1990	379
1991	894
1992	659
1993	727
1994	764
1995	698
1996	1,468
1997	730
1998	1,774
1999	1,059
2000	1,031
2001	980
2002	992
2003	830
2004	665
2005	1,061
2006	596
2007	1,091
2008	659
2009	987
2010	1,153
2011	965
2012	624
2013	823
2014	813
2015	664
2016	600
2017	891
2018	600
2019	755
2020	659
2021	893
2022	642
2023	747
2024	1,449
2025	272
2026	358

Download the Data

Data for records on 1999-09-27: 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	817
50 to 100	7
100 to 150	1
150 to 200	1
200 to 250	1