Weather Records on 11 September 2018

763 weather records were set or tied worldwide on 11 September 2018. Highest significance: Punkaharju Laukansaari, FI.

Key Facts for 11 September 2018

On 11 September 2018, 763 weather records were set or tied at long-record stations worldwide.
340 were record highs and 235 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 16 monthly and 747 daily.
Punkaharju Laukansaari set a monthly record daily precipitation of 56.7 mm (2.2 in) on 11 September 2018.
Across 164 earlier years (1809 to 2026) the same calendar date averaged 421 records.

Record Map

763 stations

763 station records on 11 September 2018 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 11 September 2018: highest significance records shown on the map
Station	Country	Type	Value	Significance
Punkaharju Laukansaari	Finland	Record daily precipitation	56.7 mm (2.2 in)	61 of 100 (Major)
Heinavesi Palokki	Finland	Record daily precipitation	56.5 mm (2.2 in)	60 of 100 (Major)
Northville	United States	Record daily precipitation	77.7 mm (3.1 in)	57 of 100 (Notable)
Waverly	United States	Record daily precipitation	52.8 mm (2.1 in)	57 of 100 (Notable)
Savonlinna Laukansaari	Finland	Record daily precipitation	41.9 mm (1.6 in)	56 of 100 (Notable)
Town Bluff Dam	United States	Record daily precipitation	165.4 mm (6.5 in)	56 of 100 (Notable)
Jokioinen Jokioisten Observato	Finland	Record daily precipitation	30.8 mm (1.2 in)	55 of 100 (Notable)
Savonlinna Savonranta	Finland	Record daily precipitation	32.8 mm (1.3 in)	55 of 100 (Notable)
Dumas	United States	Record low maximum temperature	19.4 C (66.9 F)	52 of 100 (Notable)
Raakkyla Kk	Finland	Record daily precipitation	35.2 mm (1.4 in)	51 of 100 (Notable)
Juuka Niemela	Finland	Record daily precipitation	32.4 mm (1.3 in)	51 of 100 (Notable)
Cornwall	United States	Record daily precipitation	38.1 mm (1.5 in)	51 of 100 (Notable)
Juupajoki Hyytiala	Finland	Record daily precipitation	31.4 mm (1.2 in)	50 of 100 (Notable)
Renovo	United States	Record daily precipitation	66.0 mm (2.6 in)	50 of 100 (Notable)
Trenton Falls	United States	Record daily precipitation	63.5 mm (2.5 in)	49 of 100 (Notable)
Charleroi Lock 4	United States	Record daily precipitation	53.3 mm (2.1 in)	48 of 100 (Notable)
Hohenwald	United States	Record low maximum temperature	19.4 C (66.9 F)	48 of 100 (Notable)
Kaarina Yltoinen	Finland	Record daily precipitation	25.2 mm (1.0 in)	46 of 100 (Notable)
Kacug	Russia	Record daily precipitation	27.9 mm (1.1 in)	46 of 100 (Notable)
Kouvola Utti Lentoportintie	Finland	Record daily precipitation	37.2 mm (1.5 in)	45 of 100 (Notable)
Sysma Joutsjarvi	Finland	Record daily precipitation	25.5 mm (1.0 in)	45 of 100 (Notable)
Phitsanulok/Sarit	Thailand	Record daily precipitation	94.0 mm (3.7 in)	45 of 100 (Notable)
McKeesport	United States	Record daily precipitation	44.7 mm (1.8 in)	45 of 100 (Notable)
Laghouat	Algeria	Record high minimum temperature	23.4 C (74.1 F)	44 of 100 (Notable)
Uusikaupunki Nervanderinpuisto	Finland	Record daily precipitation	25.1 mm (1.0 in)	44 of 100 (Notable)
Lulea-Bergnaset	Sweden	Record daily precipitation	27.6 mm (1.1 in)	44 of 100 (Notable)
Sussex 1 NW	United States	Record low maximum temperature	15.0 C (59.0 F)	44 of 100 (Notable)
Clarence	United States	Record daily precipitation	72.4 mm (2.9 in)	44 of 100 (Notable)
Murfreesboro 5 N	United States	Record low maximum temperature	20.0 C (68.0 F)	44 of 100 (Notable)
Burnet	United States	Record low maximum temperature	25.0 C (77.0 F)	44 of 100 (Notable)
Primorsko-Ahtarsk	Russia	Record daily precipitation	49.4 mm (1.9 in)	43 of 100 (Notable)
Boonton 1 SE	United States	Record low maximum temperature	16.1 C (61.0 F)	43 of 100 (Notable)
Cuero	United States	Record low maximum temperature	25.6 C (78.1 F)	43 of 100 (Notable)
Hameenlinna Pirttikoski	Finland	Record daily precipitation	29.4 mm (1.2 in)	42 of 100 (Notable)
Vaala Pelso	Finland	Record daily precipitation	28.1 mm (1.1 in)	42 of 100 (Notable)
Poronajsk	Russia	Record low minimum temperature	1.0 C (33.8 F)	42 of 100 (Notable)
1 WSW Princeton	United States	Record low maximum temperature	18.3 C (64.9 F)	42 of 100 (Notable)
Cleveland	United States	Record low maximum temperature	23.3 C (73.9 F)	42 of 100 (Notable)
Flemington 5 NNW	United States	Record low maximum temperature	17.2 C (63.0 F)	42 of 100 (Notable)
N Creek 5 SE	United States	Record daily precipitation	43.7 mm (1.7 in)	42 of 100 (Notable)
Anchorage Merrill Fld	United States	Record high maximum temperature	20.6 C (69.1 F)	42 of 100 (Notable)
Seward AP	United States	Record high maximum temperature	23.9 C (75.0 F)	42 of 100 (Notable)
Joutsa Parnamaki	Finland	Record daily precipitation	32.5 mm (1.3 in)	41 of 100 (Notable)
Charlotteburg Rsvr	United States	Record low maximum temperature	15.0 C (59.0 F)	41 of 100 (Notable)
Conklingville Dam	United States	Record daily precipitation	56.6 mm (2.2 in)	41 of 100 (Notable)
Hemlock	United States	Record daily precipitation	31.8 mm (1.3 in)	41 of 100 (Notable)
Port Jervis	United States	Record low maximum temperature	15.0 C (59.0 F)	41 of 100 (Notable)
Elizabethton	United States	Record high minimum temperature	20.0 C (68.0 F)	41 of 100 (Notable)
Franklin Sewage Plt	United States	Record low maximum temperature	20.0 C (68.0 F)	41 of 100 (Notable)
Ust-Barguzin	Russia	Record daily precipitation	27.3 mm (1.1 in)	40 of 100 (Notable)
New Stanton 1 SW	United States	Record daily precipitation	69.9 mm (2.8 in)	40 of 100 (Notable)
Water Valley	United States	Record low maximum temperature	20.6 C (69.1 F)	39 of 100 (Notable)
Highmarket 2W	United States	Record daily precipitation	37.8 mm (1.5 in)	39 of 100 (Notable)
Waynesburg 1 E	United States	Record daily precipitation	31.8 mm (1.3 in)	39 of 100 (Notable)
Bay City Wtr Wks	United States	Record low minimum temperature	14.4 C (57.9 F)	39 of 100 (Notable)
Koylio Yttila	Finland	Record daily precipitation	28.5 mm (1.1 in)	38 of 100 (Notable)
Siikalatva Kestila	Finland	Record daily precipitation	26.1 mm (1.0 in)	38 of 100 (Notable)
Toccoa	United States	Record high minimum temperature	21.7 C (71.1 F)	38 of 100 (Notable)
Ruston la Tech	United States	Record daily precipitation	92.7 mm (3.6 in)	38 of 100 (Notable)
Emmons	United States	Record daily precipitation	53.3 mm (2.1 in)	38 of 100 (Notable)

Counts by Type and Timescale

763 records

Records set or tied on 11 September 2018 by type: Highest daily maximum 181, Lowest daily maximum 208, Highest daily minimum 159, Lowest daily minimum 27, Heaviest daily rainfall 188.

Records on 11 September 2018 by type
Record type	Records
Highest daily maximum	181
Lowest daily maximum	208
Highest daily minimum	159
Lowest daily minimum	27
Heaviest daily rainfall	188
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 11 September 2018 by timescale: all-time 0, monthly 16, daily 747.

How Much Records Were Beaten By

618 broken records

Margins by which the 618 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 132.4. Ties are not counted.

Top 20 by Significance

11 September 2018

Top 20 records on 11 September 2018 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
11 September 2018	Punkaharju Laukansaari, FI	monthly rain	56.7 mm (2.2 in)	15.4 mm (0.6 in)	49 years	61 of 100 (Major)
11 September 2018	Heinavesi Palokki, FI	monthly rain	56.5 mm (2.2 in)	18.5 mm (0.7 in)	37 years	60 of 100 (Major)
11 September 2018	Northville, US	daily rain	77.7 mm (3.1 in)	49.8 mm (2.0 in)	27 years	57 of 100 (Notable)
11 September 2018	Waverly, US	daily rain	52.8 mm (2.1 in)	27.4 mm (1.1 in)	112 years	57 of 100 (Notable)
11 September 2018	Savonlinna Laukansaari, FI	daily rain	41.9 mm (1.6 in)	24.3 mm (1.0 in)	39 years	56 of 100 (Notable)
11 September 2018	Town Bluff Dam, US	daily rain	165.4 mm (6.5 in)	132.4 mm (5.2 in)	40 years	56 of 100 (Notable)
11 September 2018	Jokioinen Jokioisten Observato, FI	daily rain	30.8 mm (1.2 in)	19.9 mm (0.8 in)	32 years	55 of 100 (Notable)
11 September 2018	Savonlinna Savonranta, FI	daily rain	32.8 mm (1.3 in)	23.6 mm (0.9 in)	39 years	55 of 100 (Notable)
11 September 2018	Dumas, US	daily low max	19.4 C (66.9 F)	5.0 C (9.0 F)	100 years	52 of 100 (Notable)
11 September 2018	Raakkyla Kk, FI	daily rain	35.2 mm (1.4 in)	23.0 mm (0.9 in)	24 years	51 of 100 (Notable)
11 September 2018	Juuka Niemela, FI	daily rain	32.4 mm (1.3 in)	16.3 mm (0.6 in)	52 years	51 of 100 (Notable)
11 September 2018	Cornwall, US	daily rain	38.1 mm (1.5 in)	12.7 mm (0.5 in)	122 years	51 of 100 (Notable)
11 September 2018	Juupajoki Hyytiala, FI	daily rain	31.4 mm (1.2 in)	16.7 mm (0.7 in)	52 years	50 of 100 (Notable)
11 September 2018	Renovo, US	daily rain	66.0 mm (2.6 in)	28.9 mm (1.1 in)	49 years	50 of 100 (Notable)
11 September 2018	Trenton Falls, US	daily rain	63.5 mm (2.5 in)	31.5 mm (1.2 in)	49 years	49 of 100 (Notable)
11 September 2018	Charleroi Lock 4, US	daily rain	53.3 mm (2.1 in)	24.6 mm (1.0 in)	57 years	48 of 100 (Notable)
11 September 2018	Hohenwald, US	daily low max	19.4 C (66.9 F)	3.4 C (6.1 F)	118 years	48 of 100 (Notable)
11 September 2018	Kaarina Yltoinen, FI	daily rain	25.2 mm (1.0 in)	15.3 mm (0.6 in)	35 years	46 of 100 (Notable)
11 September 2018	Kacug, RU	daily rain	27.9 mm (1.1 in)	18.3 mm (0.7 in)	35 years	46 of 100 (Notable)
11 September 2018	Kouvola Utti Lentoportintie, FI	daily rain	37.2 mm (1.5 in)	16.6 mm (0.7 in)	40 years	45 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

1809 to 2018

Records set or tied on this calendar date in each year from 1809 to 2018. 2018 had 763 records.

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

Records on 09-11 in each year
Year	Records
1809	1
1814	3
1818	1
1830	1
1836	1
1838	3
1839	1
1848	1
1850	1
1851	1
1854	2
1858	1
1860	2
1861	1
1863	2
1865	3
1866	1
1874	2
1876	1
1877	1
1879	1
1880	1
1882	4
1883	2
1884	1
1886	1
1888	2
1889	4
1890	2
1891	2
1892	1
1893	4
1894	2
1895	4
1896	1
1897	3
1898	3
1899	5
1900	1
1901	3
1902	15
1903	13
1904	4
1905	5
1906	10
1907	9
1908	20
1909	12
1910	19
1911	9
1912	25
1913	22
1914	52
1915	160
1916	17
1917	88
1918	62
1919	52
1920	158
1921	52
1922	78
1923	44
1924	290
1925	260
1926	137
1927	300
1928	127
1929	206
1930	136
1931	868
1932	210
1933	276
1934	144
1935	410
1936	567
1937	324
1938	288
1939	561
1940	891
1941	210
1942	234
1943	335
1944	446
1945	341
1946	262
1947	611
1948	424
1949	450
1950	462
1951	247
1952	549
1953	392
1954	363
1955	479
1956	539
1957	470
1958	748
1959	488
1960	423
1961	524
1962	480
1963	359
1964	1,195
1965	414
1966	392
1967	478
1968	835
1969	685
1970	474
1971	464
1972	507
1973	612
1974	430
1975	644
1976	920
1977	406
1978	911
1979	596
1980	474
1981	347
1982	862
1983	1,243
1984	888
1985	844
1986	1,221
1987	595
1988	1,019
1989	1,301
1990	840
1991	843
1992	672
1993	809
1994	713
1995	619
1996	1,030
1997	808
1998	1,821
1999	1,073
2000	1,469
2001	826
2002	1,059
2003	1,022
2004	740
2005	1,163
2006	1,132
2007	947
2008	916
2009	774
2010	965
2011	1,051
2012	687
2013	1,207
2014	1,100
2015	683
2016	677
2017	916
2018	763
2019	806
2020	1,235
2021	851
2022	617
2023	1,034
2024	889
2025	917
2026	615

Download the Data

Data for records on 2018-09-11: 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	586
20 to 40	26
40 to 60	5
60 to 80	0
80 to 100	0
100 to 120	0
120 to 140	1