Weather Records on 27 September 2018

600 weather records were set or tied worldwide on 27 September 2018. Highest significance: Parnu, EE.

Key Facts for 27 September 2018

On 27 September 2018, 600 weather records were set or tied at long-record stations worldwide.
335 were record highs and 79 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 12 monthly and 588 daily.
Parnu set a daily record precipitation of 43.9 mm (1.7 in) on 27 September 2018.
Across 154 earlier years (1799 to 2026) the same calendar date averaged 450 records.

Record Map

600 stations

600 station records on 27 September 2018 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 27 September 2018: highest significance records shown on the map
Station	Country	Type	Value	Significance
Parnu	Estonia	Record daily precipitation	43.9 mm (1.7 in)	73 of 100 (Major)
Waipahu 750	United States	Record daily precipitation	48.3 mm (1.9 in)	64 of 100 (Major)
Mombasa	Kenya	Record daily precipitation	119.1 mm (4.7 in)	63 of 100 (Major)
Baldwyn	United States	Record daily precipitation	129.8 mm (5.1 in)	58 of 100 (Notable)
Olenja Rechka	Russia	Record daily precipitation	54.5 mm (2.1 in)	54 of 100 (Notable)
Kristinehamn	Sweden	Record daily precipitation	33.8 mm (1.3 in)	54 of 100 (Notable)
Waialae-Kahala 715	United States	Record daily precipitation	38.9 mm (1.5 in)	52 of 100 (Notable)
Homer AP	United States	Record daily precipitation	37.3 mm (1.5 in)	51 of 100 (Notable)
Ulety	Russia	Record daily precipitation	31.0 mm (1.2 in)	50 of 100 (Notable)
Kanin Nos	Russia	Record daily precipitation	25.7 mm (1.0 in)	49 of 100 (Notable)
Knoxville AP	United States	Record daily precipitation	53.3 mm (2.1 in)	47 of 100 (Notable)
Viljandi	Estonia	Record daily precipitation	35.0 mm (1.4 in)	46 of 100 (Notable)
Tartu-Toravere	Estonia	Record daily precipitation	26.7 mm (1.1 in)	46 of 100 (Notable)
Aksa	Russia	Record daily precipitation	33.0 mm (1.3 in)	46 of 100 (Notable)
Orebro	Sweden	Record daily precipitation	31.9 mm (1.3 in)	46 of 100 (Notable)
Sunnyside - Lund 31S	United States	Record low minimum temperature	-6.7 C (19.9 F)	46 of 100 (Notable)
Arad	Romania	Record low minimum temperature	-0.5 C (31.1 F)	45 of 100 (Notable)
Mangum	United States	Record daily precipitation	34.5 mm (1.4 in)	44 of 100 (Notable)
Rocky Point Sugar Mill	Australia	Record daily precipitation	55.2 mm (2.2 in)	43 of 100 (Notable)
Paterson (Tocal AWS)	Australia	Record daily precipitation	96.2 mm (3.8 in)	43 of 100 (Notable)
Hope 3 NE	United States	Record daily precipitation	53.8 mm (2.1 in)	43 of 100 (Notable)
Chittenden	United States	Record daily precipitation	57.2 mm (2.3 in)	43 of 100 (Notable)
Mangut	Russia	Record daily precipitation	25.9 mm (1.0 in)	42 of 100 (Notable)
Degerfors	Sweden	Record daily precipitation	34.2 mm (1.3 in)	42 of 100 (Notable)
St Francisville	United States	Record daily precipitation	49.3 mm (1.9 in)	42 of 100 (Notable)
Honokaa Town 215	United States	Record daily precipitation	50.8 mm (2.0 in)	42 of 100 (Notable)
Virtsu	Estonia	Record daily precipitation	25.7 mm (1.0 in)	41 of 100 (Notable)
Osijek	Croatia	Record low minimum temperature	1.4 C (34.5 F)	41 of 100 (Notable)
Vinnicy	Russia	Record daily precipitation	25.9 mm (1.0 in)	41 of 100 (Notable)
Podor	Senegal	Record high maximum temperature	43.5 C (110.3 F)	41 of 100 (Notable)
Clayton 1 SSW	United States	Record high minimum temperature	19.4 C (66.9 F)	41 of 100 (Notable)
Bordeaux-Merignac	France	Record high maximum temperature	31.2 C (88.2 F)	40 of 100 (Notable)
Szeged	Hungary	Record low minimum temperature	1.0 C (33.8 F)	40 of 100 (Notable)
Hohenwald	United States	Record daily precipitation	33.3 mm (1.3 in)	40 of 100 (Notable)
Manoa 712.1	United States	Record daily precipitation	25.7 mm (1.0 in)	40 of 100 (Notable)
Maroon	Australia	Record daily precipitation	37.6 mm (1.5 in)	38 of 100 (Notable)
Ajan	Russia	Record high maximum temperature	19.0 C (66.2 F)	38 of 100 (Notable)
Sines Deep Creek	United States	Record high minimum temperature	15.6 C (60.1 F)	37 of 100 (Notable)
Laurens	United States	Record high minimum temperature	20.6 C (69.1 F)	37 of 100 (Notable)
Sretensk	Russia	Record high minimum temperature	12.7 C (54.9 F)	36 of 100 (Notable)
Plant City	United States	Record daily precipitation	61.5 mm (2.4 in)	36 of 100 (Notable)
Pali Golf Course 788.1	United States	Record daily precipitation	47.8 mm (1.9 in)	36 of 100 (Notable)
Nagornyj	Russia	Record high maximum temperature	20.1 C (68.2 F)	35 of 100 (Notable)
Shilka	Russia	Record high minimum temperature	11.5 C (52.7 F)	35 of 100 (Notable)
San Sebastian - Igueldo	Spain	Record high maximum temperature	28.7 C (83.7 F)	35 of 100 (Notable)
Carville 2 SW	United States	Record daily precipitation	39.9 mm (1.6 in)	35 of 100 (Notable)
Bristol AP	United States	Record daily precipitation	27.4 mm (1.1 in)	35 of 100 (Notable)
Green Pigeon (Morning View)	Australia	Record daily precipitation	30.4 mm (1.2 in)	34 of 100 (Routine)
Wauchula	United States	Record high maximum temperature	35.0 C (95.0 F)	34 of 100 (Routine)
Hohhot	China	Record daily precipitation	25.7 mm (1.0 in)	33 of 100 (Routine)
Knin	Croatia	Record low minimum temperature	2.4 C (36.3 F)	33 of 100 (Routine)
Skovorodino	Russia	Record high maximum temperature	23.5 C (74.3 F)	33 of 100 (Routine)
Addison	United States	Record daily precipitation	42.9 mm (1.7 in)	33 of 100 (Routine)
Opihihale #2 24.1	United States	Record high maximum temperature	31.1 C (88.0 F)	33 of 100 (Routine)
Craiova	Romania	Record low minimum temperature	1.8 C (35.2 F)	32 of 100 (Routine)
Kargasok	Russia	Record high maximum temperature	22.2 C (72.0 F)	32 of 100 (Routine)
Ust-Njukzha	Russia	Record high maximum temperature	20.9 C (69.6 F)	32 of 100 (Routine)
Billingsley	United States	Record daily precipitation	71.1 mm (2.8 in)	32 of 100 (Routine)
Old Town Bay	United States	Record daily precipitation	27.9 mm (1.1 in)	32 of 100 (Routine)
Wiggins	United States	Record daily precipitation	35.6 mm (1.4 in)	32 of 100 (Routine)

Counts by Type and Timescale

600 records

Records set or tied on 27 September 2018 by type: Highest daily maximum 131, Lowest daily maximum 17, Highest daily minimum 204, Lowest daily minimum 62, Heaviest daily rainfall 185, Heaviest daily snowfall 1.

Records on 27 September 2018 by type
Record type	Records
Highest daily maximum	131
Lowest daily maximum	17
Highest daily minimum	204
Lowest daily minimum	62
Heaviest daily rainfall	185
Heaviest daily snowfall	1
Deepest snow cover	0

Records on 27 September 2018 by timescale: all-time 0, monthly 12, daily 588.

How Much Records Were Beaten By

482 broken records

Margins by which the 482 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 92.9. Ties are not counted.

Top 20 by Significance

27 September 2018

Top 20 records on 27 September 2018 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 September 2018	Parnu, EE	daily rain	43.9 mm (1.7 in)	19.5 mm (0.8 in)	104 years	73 of 100 (Major)
27 September 2018	Waipahu 750, US	daily rain	48.3 mm (1.9 in)	32.6 mm (1.3 in)	49 years	64 of 100 (Major)
27 September 2018	Mombasa, KE	daily rain	119.1 mm (4.7 in)	92.9 mm (3.7 in)	56 years	63 of 100 (Major)
27 September 2018	Baldwyn, US	daily rain	129.8 mm (5.1 in)	71.4 mm (2.8 in)	57 years	58 of 100 (Notable)
27 September 2018	Olenja Rechka, RU	daily rain	54.5 mm (2.1 in)	32.6 mm (1.3 in)	17 years	54 of 100 (Notable)
27 September 2018	Kristinehamn, SE	daily rain	33.8 mm (1.3 in)	21.8 mm (0.9 in)	43 years	54 of 100 (Notable)
27 September 2018	Waialae-Kahala 715, US	daily rain	38.9 mm (1.5 in)	23.2 mm (0.9 in)	32 years	52 of 100 (Notable)
27 September 2018	Homer AP, US	daily rain	37.3 mm (1.5 in)	19.8 mm (0.8 in)	32 years	51 of 100 (Notable)
27 September 2018	Ulety, RU	daily rain	31.0 mm (1.2 in)	13.1 mm (0.5 in)	71 years	50 of 100 (Notable)
27 September 2018	Kanin Nos, RU	monthly rain	25.7 mm (1.0 in)	5.1 mm (0.20 in)	37 years	49 of 100 (Notable)
27 September 2018	Knoxville AP, US	daily rain	53.3 mm (2.1 in)	9.4 mm (0.37 in)	100 years	47 of 100 (Notable)
27 September 2018	Viljandi, EE	daily rain	35.0 mm (1.4 in)	18.7 mm (0.7 in)	8 years	46 of 100 (Notable)
27 September 2018	Tartu-Toravere, EE	daily rain	26.7 mm (1.1 in)	15.3 mm (0.6 in)	23 years	46 of 100 (Notable)
27 September 2018	Aksa, RU	daily rain	33.0 mm (1.3 in)	12.5 mm (0.5 in)	71 years	46 of 100 (Notable)
27 September 2018	Orebro, SE	daily rain	31.9 mm (1.3 in)	3.9 mm (0.15 in)	113 years	46 of 100 (Notable)
27 September 2018	Sunnyside - Lund 31S, US	daily low min	-6.7 C (19.9 F)	2.8 C (5.0 F)	125 years	46 of 100 (Notable)
27 September 2018	Arad, RO	daily low min	-0.5 C (31.1 F)	2.2 C (4.0 F)	112 years	45 of 100 (Notable)
27 September 2018	Mangum, US	daily rain	34.5 mm (1.4 in)	13.7 mm (0.5 in)	93 years	44 of 100 (Notable)
27 September 2018	Rocky Point Sugar Mill, AU	daily rain	55.2 mm (2.2 in)	35.2 mm (1.4 in)	15 years	43 of 100 (Notable)
27 September 2018	Paterson (Tocal AWS), AU	monthly rain	96.2 mm (3.8 in)	22.6 mm (0.9 in)	10 years	43 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 2018

Records set or tied on this calendar date in each year from 1799 to 2018. 2018 had 600 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	625
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	270
2026	348

Download the Data

Data for records on 2018-09-27: 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 2026-10-12 (12 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Margin	Records
0 to 20	459
20 to 40	20
40 to 60	0
60 to 80	2
80 to 100	1