Weather Records on 18 September 2015

934 weather records were set or tied worldwide on 18 September 2015. Highest significance: Burlington Wwtp, US.

Key Facts for 18 September 2015

On 18 September 2015, 934 weather records were set or tied at long-record stations worldwide.
605 were record highs and 45 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 18 monthly and 916 daily.
Burlington Wwtp set a monthly record daily precipitation of 116.8 mm (4.6 in) on 18 September 2015.
Across 163 earlier years (1803 to 2026) the same calendar date averaged 418 records.

Record Map

934 stations

934 station records on 18 September 2015 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 September 2015: highest significance records shown on the map
Station	Country	Type	Value	Significance
Burlington Wwtp	United States	Record daily precipitation	116.8 mm (4.6 in)	70 of 100 (Major)
Haapavesi Mustikkamaki	Finland	Record daily precipitation	49.6 mm (2.0 in)	68 of 100 (Major)
Alvsbyn_A	Sweden	Record daily precipitation	33.6 mm (1.3 in)	65 of 100 (Major)
Toorooka (Moparrabah)	Australia	Record daily precipitation	38.0 mm (1.5 in)	61 of 100 (Major)
Ofunato	Japan	Record daily precipitation	126.0 mm (5.0 in)	59 of 100 (Notable)
Jokkmokk	Sweden	Record daily precipitation	31.0 mm (1.2 in)	59 of 100 (Notable)
Kokemaki Peipohja Hyrkola	Finland	Record daily precipitation	29.2 mm (1.1 in)	58 of 100 (Notable)
Whitewater Wwtp	United States	Record daily precipitation	101.9 mm (4.0 in)	58 of 100 (Notable)
Tyrnava Temmes	Finland	Record daily precipitation	49.0 mm (1.9 in)	57 of 100 (Notable)
Vidsel	Sweden	Record daily precipitation	39.0 mm (1.5 in)	57 of 100 (Notable)
Hua Hin	Thailand	Record daily precipitation	112.5 mm (4.4 in)	57 of 100 (Notable)
Pudasjarvi Sarakyla	Finland	Record daily precipitation	35.7 mm (1.4 in)	56 of 100 (Notable)
Pello Kk Museotie	Finland	Record daily precipitation	39.0 mm (1.5 in)	56 of 100 (Notable)
Saittarova_D	Sweden	Record daily precipitation	33.9 mm (1.3 in)	56 of 100 (Notable)
Fulton L&D #13	United States	Record daily precipitation	99.3 mm (3.9 in)	56 of 100 (Notable)
Tarendo	Sweden	Record daily precipitation	29.8 mm (1.2 in)	55 of 100 (Notable)
Pello Konttajarvi	Finland	Record daily precipitation	42.8 mm (1.7 in)	54 of 100 (Notable)
Sodankyla Vuotso	Finland	Record daily precipitation	35.3 mm (1.4 in)	54 of 100 (Notable)
Aurangabad Chikalth	India	Record daily precipitation	85.1 mm (3.4 in)	54 of 100 (Notable)
Svanstein	Sweden	Record daily precipitation	39.0 mm (1.5 in)	54 of 100 (Notable)
Esrange	Sweden	Record daily precipitation	34.4 mm (1.4 in)	54 of 100 (Notable)
Bowraville (Cow Cownty)	Australia	Record daily precipitation	60.8 mm (2.4 in)	53 of 100 (Notable)
Toholampi Oravala	Finland	Record daily precipitation	28.0 mm (1.1 in)	53 of 100 (Notable)
Skroven	Sweden	Record daily precipitation	38.6 mm (1.5 in)	53 of 100 (Notable)
Jarhois	Sweden	Record daily precipitation	40.5 mm (1.6 in)	53 of 100 (Notable)
Chicago Midway AP 3SW	United States	Record daily precipitation	98.3 mm (3.9 in)	53 of 100 (Notable)
Lake Mills Wwtp	United States	Record daily precipitation	81.5 mm (3.2 in)	53 of 100 (Notable)
Enkoping	Sweden	Record daily precipitation	25.9 mm (1.0 in)	50 of 100 (Notable)
Lulea Flygplats	Sweden	Record daily precipitation	30.2 mm (1.2 in)	50 of 100 (Notable)
Overtornea	Sweden	Record daily precipitation	33.0 mm (1.3 in)	50 of 100 (Notable)
Gallivare_A	Sweden	Record daily precipitation	31.4 mm (1.2 in)	50 of 100 (Notable)
Kauhava Lentokentta	Finland	Record daily precipitation	29.8 mm (1.2 in)	48 of 100 (Notable)
Vierema Kaarakkala	Finland	Record daily precipitation	26.2 mm (1.0 in)	48 of 100 (Notable)
Rovaniemi Lentoasema	Finland	Record daily precipitation	29.8 mm (1.2 in)	48 of 100 (Notable)
Katkesuando	Sweden	Record daily precipitation	29.5 mm (1.2 in)	48 of 100 (Notable)
Grand Marais	United States	Record daily precipitation	43.4 mm (1.7 in)	48 of 100 (Notable)
Cedar Falls Hydro Plt	United States	Record daily precipitation	62.2 mm (2.4 in)	48 of 100 (Notable)
Utajarvi Sarkijarvi	Finland	Record daily precipitation	26.5 mm (1.0 in)	47 of 100 (Notable)
Kittila Pokka	Finland	Record daily precipitation	30.7 mm (1.2 in)	47 of 100 (Notable)
Kalix_D	Sweden	Record daily precipitation	45.6 mm (1.8 in)	47 of 100 (Notable)
Kangos	Sweden	Record daily precipitation	28.0 mm (1.1 in)	47 of 100 (Notable)
Watseka Public Works	United States	Record daily precipitation	37.6 mm (1.5 in)	47 of 100 (Notable)
Koylio Yttila	Finland	Record daily precipitation	30.5 mm (1.2 in)	46 of 100 (Notable)
Cuovddatmohkki	Norway	Record daily precipitation	39.1 mm (1.5 in)	46 of 100 (Notable)
Glommerstrask	Sweden	Record daily precipitation	27.2 mm (1.1 in)	46 of 100 (Notable)
Murjek	Sweden	Record daily precipitation	26.3 mm (1.0 in)	46 of 100 (Notable)
Svappavaara	Sweden	Record daily precipitation	26.4 mm (1.0 in)	46 of 100 (Notable)
Alavus Sulkavankyla	Finland	Record daily precipitation	31.5 mm (1.2 in)	45 of 100 (Notable)
Suomussalmi Naljanka	Finland	Record daily precipitation	29.0 mm (1.1 in)	45 of 100 (Notable)
Hvar	Croatia	Record high minimum temperature	25.3 C (77.5 F)	45 of 100 (Notable)
Parkajoki	Sweden	Record daily precipitation	35.9 mm (1.4 in)	45 of 100 (Notable)
Jalasjarvi Hirvijarvi	Finland	Record daily precipitation	32.2 mm (1.3 in)	44 of 100 (Notable)
Ylitornio Meltosjarvi	Finland	Record daily precipitation	28.6 mm (1.1 in)	44 of 100 (Notable)
Fairbury Wwtp	United States	Record daily precipitation	53.3 mm (2.1 in)	44 of 100 (Notable)
Kittila Pulju	Finland	Record daily precipitation	32.4 mm (1.3 in)	43 of 100 (Notable)
Council	United States	Record daily precipitation	25.4 mm (1.0 in)	43 of 100 (Notable)
Mt Carroll	United States	Record daily precipitation	75.2 mm (3.0 in)	43 of 100 (Notable)
Champaign 3S	United States	Record daily precipitation	39.6 mm (1.6 in)	43 of 100 (Notable)
Clinton #1	United States	Record daily precipitation	66.8 mm (2.6 in)	43 of 100 (Notable)
Karvia Alkkia	Finland	Record daily precipitation	28.5 mm (1.1 in)	42 of 100 (Notable)

Counts by Type and Timescale

934 records

Records set or tied on 18 September 2015 by type: Highest daily maximum 254, Lowest daily maximum 17, Highest daily minimum 351, Lowest daily minimum 28, Heaviest daily rainfall 281, Heaviest daily snowfall 2, Deepest snow cover 1.

Records on 18 September 2015 by type
Record type	Records
Highest daily maximum	254
Lowest daily maximum	17
Highest daily minimum	351
Lowest daily minimum	28
Heaviest daily rainfall	281
Heaviest daily snowfall	2
Deepest snow cover	1

Records on 18 September 2015 by timescale: all-time 0, monthly 18, daily 916.

How Much Records Were Beaten By

807 broken records

Margins by which the 807 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 105.5. Ties are not counted.

Top 20 by Significance

18 September 2015

Top 20 records on 18 September 2015 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 September 2015	Burlington Wwtp, US	monthly rain	116.8 mm (4.6 in)	44.7 mm (1.8 in)	54 years	70 of 100 (Major)
18 September 2015	Haapavesi Mustikkamaki, FI	monthly rain	49.6 mm (2.0 in)	21.2 mm (0.8 in)	46 years	68 of 100 (Major)
18 September 2015	Alvsbyn_A, SE	daily rain	33.6 mm (1.3 in)	25.3 mm (1.0 in)	60 years	65 of 100 (Major)
18 September 2015	Toorooka (Moparrabah), AU	daily rain	38.0 mm (1.5 in)	24.8 mm (1.0 in)	115 years	61 of 100 (Major)
18 September 2015	Ofunato, JP	daily rain	126.0 mm (5.0 in)	105.5 mm (4.2 in)	48 years	59 of 100 (Notable)
18 September 2015	Jokkmokk, SE	daily rain	31.0 mm (1.2 in)	11.2 mm (0.4 in)	92 years	59 of 100 (Notable)
18 September 2015	Kokemaki Peipohja Hyrkola, FI	daily rain	29.2 mm (1.1 in)	20.5 mm (0.8 in)	49 years	58 of 100 (Notable)
18 September 2015	Whitewater Wwtp, US	daily rain	101.9 mm (4.0 in)	65.6 mm (2.6 in)	36 years	58 of 100 (Notable)
18 September 2015	Tyrnava Temmes, FI	monthly rain	49.0 mm (1.9 in)	22.7 mm (0.9 in)	11 years	57 of 100 (Notable)
18 September 2015	Vidsel, SE	daily rain	39.0 mm (1.5 in)	21.5 mm (0.8 in)	40 years	57 of 100 (Notable)
18 September 2015	Hua Hin, TH	daily rain	112.5 mm (4.4 in)	77.7 mm (3.1 in)	36 years	57 of 100 (Notable)
18 September 2015	Pudasjarvi Sarakyla, FI	daily rain	35.7 mm (1.4 in)	22.5 mm (0.9 in)	40 years	56 of 100 (Notable)
18 September 2015	Pello Kk Museotie, FI	daily rain	39.0 mm (1.5 in)	25.7 mm (1.0 in)	40 years	56 of 100 (Notable)
18 September 2015	Saittarova_D, SE	daily rain	33.9 mm (1.3 in)	16.4 mm (0.6 in)	62 years	56 of 100 (Notable)
18 September 2015	Fulton L&D #13, US	daily rain	99.3 mm (3.9 in)	50.3 mm (2.0 in)	46 years	56 of 100 (Notable)
18 September 2015	Tarendo, SE	daily rain	29.8 mm (1.2 in)	18.8 mm (0.7 in)	40 years	55 of 100 (Notable)
18 September 2015	Pello Konttajarvi, FI	daily rain	42.8 mm (1.7 in)	21.6 mm (0.9 in)	32 years	54 of 100 (Notable)
18 September 2015	Sodankyla Vuotso, FI	daily rain	35.3 mm (1.4 in)	25.3 mm (1.0 in)	32 years	54 of 100 (Notable)
18 September 2015	Aurangabad Chikalth, IN	daily rain	85.1 mm (3.4 in)	60.3 mm (2.4 in)	52 years	54 of 100 (Notable)
18 September 2015	Svanstein, SE	daily rain	39.0 mm (1.5 in)	28.7 mm (1.1 in)	32 years	54 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

1803 to 2015

Records set or tied on this calendar date in each year from 1803 to 2015. 2015 had 934 records.

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

Records on 09-18 in each year
Year	Records
1803	1
1811	1
1814	1
1819	1
1829	1
1832	1
1834	1
1835	1
1837	2
1847	2
1848	1
1849	1
1851	4
1859	1
1861	1
1865	1
1869	1
1871	1
1875	1
1876	2
1877	1
1879	1
1880	1
1881	1
1882	1
1885	1
1886	4
1889	6
1890	1
1891	1
1893	4
1894	2
1895	2
1896	4
1897	3
1898	5
1899	3
1900	2
1901	10
1902	8
1903	58
1904	6
1905	22
1906	16
1907	4
1908	11
1909	17
1910	5
1911	8
1912	43
1913	44
1914	56
1915	41
1916	58
1917	99
1918	57
1919	48
1920	56
1921	213
1922	45
1923	114
1924	62
1925	269
1926	205
1927	189
1928	114
1929	309
1930	124
1931	429
1932	226
1933	370
1934	188
1935	281
1936	155
1937	422
1938	373
1939	190
1940	402
1941	318
1942	1,001
1943	624
1944	503
1945	732
1946	576
1947	927
1948	427
1949	356
1950	370
1951	320
1952	340
1953	245
1954	446
1955	672
1956	587
1957	429
1958	491
1959	829
1960	351
1961	478
1962	360
1963	453
1964	282
1965	1,172
1966	498
1967	357
1968	763
1969	424
1970	377
1971	1,245
1972	691
1973	593
1974	559
1975	976
1976	615
1977	619
1978	1,162
1979	709
1980	652
1981	1,671
1982	603
1983	936
1984	951
1985	636
1986	730
1987	1,244
1988	997
1989	778
1990	904
1991	1,377
1992	821
1993	747
1994	852
1995	935
1996	1,237
1997	935
1998	1,038
1999	583
2000	1,146
2001	993
2002	828
2003	815
2004	1,027
2005	781
2006	1,309
2007	670
2008	697
2009	692
2010	1,040
2011	1,050
2012	922
2013	666
2014	682
2015	934
2016	893
2017	518
2018	1,200
2019	768
2020	682
2021	582
2022	613
2023	639
2024	687
2025	471
2026	864

Download the Data

Data for records on 2015-09-18: 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	757
20 to 40	40
40 to 60	5
60 to 80	4
80 to 100	0
100 to 120	1