Weather Records on 18 September 2023

639 weather records were set or tied worldwide on 18 September 2023. Highest significance: Tunhovd, NO.

Key Facts for 18 September 2023

On 18 September 2023, 639 weather records were set or tied at long-record stations worldwide.
473 were record highs and 28 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 18 monthly and 621 daily.
Tunhovd set a daily record precipitation of 26.8 mm (1.1 in) on 18 September 2023.
Across 163 earlier years (1803 to 2026) the same calendar date averaged 420 records.

Record Map

639 stations

639 station records on 18 September 2023 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 September 2023: highest significance records shown on the map
Station	Country	Type	Value	Significance
Tunhovd	Norway	Record daily precipitation	26.8 mm (1.1 in)	56 of 100 (Notable)
Brunei Intl	Brunei	Record daily precipitation	161.0 mm (6.3 in)	55 of 100 (Notable)
Loken I Volbu	Norway	Record daily precipitation	29.0 mm (1.1 in)	54 of 100 (Notable)
Rauland	Norway	Record daily precipitation	35.8 mm (1.4 in)	50 of 100 (Notable)
Sala	Sweden	Record daily precipitation	27.3 mm (1.1 in)	48 of 100 (Notable)
Geilo	Norway	Record daily precipitation	33.6 mm (1.3 in)	47 of 100 (Notable)
Amotsdal	Norway	Record daily precipitation	47.1 mm (1.9 in)	45 of 100 (Notable)
Dijon-Longvic	France	Record high minimum temperature	17.3 C (63.1 F)	44 of 100 (Notable)
Skedsmo-Hellerud	Norway	Record daily precipitation	36.8 mm (1.4 in)	44 of 100 (Notable)
Bykle - Kultran	Norway	Record daily precipitation	45.8 mm (1.8 in)	43 of 100 (Notable)
Malinovka	Russia	Record daily precipitation	40.9 mm (1.6 in)	43 of 100 (Notable)
Schwerin	Germany	Record high minimum temperature	17.5 C (63.5 F)	42 of 100 (Notable)
Gold Beach Rs	United States	Record low minimum temperature	1.7 C (35.1 F)	42 of 100 (Notable)
Hedrum	Norway	Record daily precipitation	54.3 mm (2.1 in)	41 of 100 (Notable)
Sofijskij Priisk	Russia	Record daily precipitation	42.9 mm (1.7 in)	41 of 100 (Notable)
Coeur D'Alene	United States	Record high minimum temperature	14.4 C (57.9 F)	41 of 100 (Notable)
Grass Range	United States	Record high minimum temperature	16.1 C (61.0 F)	41 of 100 (Notable)
Hamburg Fuhlsbuettel	Germany	Record high minimum temperature	16.5 C (61.7 F)	40 of 100 (Notable)
Asahikawa	Japan	Record daily precipitation	59.9 mm (2.4 in)	40 of 100 (Notable)
Ulleungdo	Korea, South	Record high minimum temperature	21.6 C (70.9 F)	40 of 100 (Notable)
Skultuna	Sweden	Record daily precipitation	27.4 mm (1.1 in)	40 of 100 (Notable)
Lugano	Switzerland	Record daily precipitation	76.0 mm (3.0 in)	40 of 100 (Notable)
Hiddensee-Vitte	Germany	Record high minimum temperature	17.7 C (63.9 F)	38 of 100 (Notable)
Notodden	Norway	Record daily precipitation	44.6 mm (1.8 in)	38 of 100 (Notable)
Tovdal	Norway	Record daily precipitation	73.0 mm (2.9 in)	38 of 100 (Notable)
Falsterbo	Sweden	Record high minimum temperature	16.9 C (62.4 F)	38 of 100 (Notable)
Rye Patch Dam	United States	Record high minimum temperature	15.0 C (59.0 F)	38 of 100 (Notable)
Bremen-Seefahrtschule	Germany	Record high minimum temperature	15.8 C (60.4 F)	37 of 100 (Notable)
Oslo Blindern	Norway	Record daily precipitation	42.3 mm (1.7 in)	37 of 100 (Notable)
Habarovsk	Russia	Record high minimum temperature	15.4 C (59.7 F)	37 of 100 (Notable)
Sheffield	United Kingdom	Record high minimum temperature	15.4 C (59.7 F)	37 of 100 (Notable)
Kirchdorf/Poel	Germany	Record high minimum temperature	17.6 C (63.7 F)	36 of 100 (Notable)
Stiege	Germany	Record high minimum temperature	15.7 C (60.3 F)	36 of 100 (Notable)
Tveitsund	Norway	Record daily precipitation	50.0 mm (2.0 in)	36 of 100 (Notable)
Rjukan	Norway	Record daily precipitation	49.0 mm (1.9 in)	36 of 100 (Notable)
Romney 1 SW	United States	Record low maximum temperature	14.4 C (57.9 F)	36 of 100 (Notable)
Rostock-Warnemunde	Germany	Record high minimum temperature	18.0 C (64.4 F)	35 of 100 (Notable)
Mogen	Norway	Record daily precipitation	47.5 mm (1.9 in)	35 of 100 (Notable)
Kristianstad	Sweden	Record high minimum temperature	14.7 C (58.5 F)	35 of 100 (Notable)
Bradford	United Kingdom	Record high minimum temperature	15.0 C (59.0 F)	35 of 100 (Notable)
Mt Locke	United States	Record daily precipitation	29.7 mm (1.2 in)	35 of 100 (Notable)
Port Isabel	United States	Record high maximum temperature	36.1 C (97.0 F)	35 of 100 (Notable)
Bastia	France	Record high minimum temperature	21.8 C (71.2 F)	34 of 100 (Routine)
Teterow	Germany	Record high minimum temperature	16.3 C (61.3 F)	34 of 100 (Routine)
Bergeligrend	Norway	Record daily precipitation	37.0 mm (1.5 in)	34 of 100 (Routine)
Hakavik	Norway	Record daily precipitation	39.9 mm (1.6 in)	34 of 100 (Routine)
Key W Intl AP	United States	Record high maximum temperature	33.9 C (93.0 F)	34 of 100 (Routine)
Marseilles-Marignane	France	Record high minimum temperature	24.6 C (76.3 F)	33 of 100 (Routine)
Greifswald	Germany	Record high minimum temperature	16.0 C (60.8 F)	33 of 100 (Routine)
Bjornholt	Norway	Record daily precipitation	63.2 mm (2.5 in)	33 of 100 (Routine)
Keshan	China	Record daily precipitation	29.7 mm (1.2 in)	32 of 100 (Routine)
Zhumadian	China	Record daily precipitation	82.3 mm (3.2 in)	32 of 100 (Routine)
Boltenhagen	Germany	Record high minimum temperature	17.5 C (63.5 F)	32 of 100 (Routine)
Kerman	Iran	Record high minimum temperature	20.0 C (68.0 F)	32 of 100 (Routine)
Ljosland - Monen	Norway	Record daily precipitation	60.4 mm (2.4 in)	32 of 100 (Routine)
Pleasant Grove	United States	Record high maximum temperature	36.1 C (97.0 F)	32 of 100 (Routine)
Tengchong	China	Record high maximum temperature	28.7 C (83.7 F)	31 of 100 (Routine)
Wakamatsu	Japan	Record high minimum temperature	23.4 C (74.1 F)	31 of 100 (Routine)
Kyoto	Japan	Record high maximum temperature	34.4 C (93.9 F)	31 of 100 (Routine)
Bournemouth	United Kingdom	Record daily precipitation	33.8 mm (1.3 in)	31 of 100 (Routine)

Counts by Type and Timescale

639 records

Records set or tied on 18 September 2023 by type: Highest daily maximum 192, Lowest daily maximum 20, Highest daily minimum 281, Lowest daily minimum 8, Heaviest daily rainfall 138.

Records on 18 September 2023 by type
Record type	Records
Highest daily maximum	192
Lowest daily maximum	20
Highest daily minimum	281
Lowest daily minimum	8
Heaviest daily rainfall	138
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 18 September 2023 by timescale: all-time 0, monthly 18, daily 621.

How Much Records Were Beaten By

564 broken records

Margins by which the 564 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 124.9. Ties are not counted.

Top 20 by Significance

18 September 2023

Top 20 records on 18 September 2023 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 September 2023	Tunhovd, NO	daily rain	26.8 mm (1.1 in)	8.1 mm (0.32 in)	102 years	56 of 100 (Notable)
18 September 2023	Brunei Intl, BN	daily rain	161.0 mm (6.3 in)	124.9 mm (4.9 in)	38 years	55 of 100 (Notable)
18 September 2023	Loken I Volbu, NO	daily rain	29.0 mm (1.1 in)	16.2 mm (0.6 in)	57 years	54 of 100 (Notable)
18 September 2023	Rauland, NO	daily rain	35.8 mm (1.4 in)	7.2 mm (0.28 in)	102 years	50 of 100 (Notable)
18 September 2023	Sala, SE	daily rain	27.3 mm (1.1 in)	15.3 mm (0.6 in)	57 years	48 of 100 (Notable)
18 September 2023	Geilo, NO	daily rain	33.6 mm (1.3 in)	14.4 mm (0.6 in)	44 years	47 of 100 (Notable)
18 September 2023	Amotsdal, NO	daily rain	47.1 mm (1.9 in)	28.8 mm (1.1 in)	41 years	45 of 100 (Notable)
18 September 2023	Dijon-Longvic, FR	daily high min	17.3 C (63.1 F)	1.5 C (2.7 F)	101 years	44 of 100 (Notable)
18 September 2023	Skedsmo-Hellerud, NO	daily rain	36.8 mm (1.4 in)	24.8 mm (1.0 in)	32 years	44 of 100 (Notable)
18 September 2023	Bykle - Kultran, NO	daily rain	45.8 mm (1.8 in)	22.6 mm (0.9 in)	32 years	43 of 100 (Notable)
18 September 2023	Malinovka, RU	daily rain	40.9 mm (1.6 in)	21.2 mm (0.8 in)	44 years	43 of 100 (Notable)
18 September 2023	Schwerin, DE	daily high min	17.5 C (63.5 F)	1.7 C (3.1 F)	90 years	42 of 100 (Notable)
18 September 2023	Gold Beach Rs, US	daily low min	1.7 C (35.1 F)	4.4 C (7.9 F)	52 years	42 of 100 (Notable)
18 September 2023	Hedrum, NO	daily rain	54.3 mm (2.1 in)	15.3 mm (0.6 in)	57 years	41 of 100 (Notable)
18 September 2023	Sofijskij Priisk, RU	daily rain	42.9 mm (1.7 in)	11.4 mm (0.4 in)	68 years	41 of 100 (Notable)
18 September 2023	Coeur D'Alene, US	daily high min	14.4 C (57.9 F)	0.5 C (0.9 F)	104 years	41 of 100 (Notable)
18 September 2023	Grass Range, US	daily high min	16.1 C (61.0 F)	0.5 C (0.9 F)	108 years	41 of 100 (Notable)
18 September 2023	Hamburg Fuhlsbuettel, DE	daily high min	16.5 C (61.7 F)	1.0 C (1.8 F)	90 years	40 of 100 (Notable)
18 September 2023	Asahikawa, JP	daily rain	59.9 mm (2.4 in)	20.8 mm (0.8 in)	57 years	40 of 100 (Notable)
18 September 2023	Ulleungdo, KR	daily high min	21.6 C (70.9 F)	1.9 C (3.4 F)	80 years	40 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 2023

Records set or tied on this calendar date in each year from 1803 to 2023. 2023 had 639 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 2023-09-18: 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	552
20 to 40	11
40 to 60	0
60 to 80	0
80 to 100	0
100 to 120	0
120 to 140	1