Weather Records on 12 September 2018

595 weather records were set or tied worldwide on 12 September 2018. Highest significance: Guba, AZ.

Key Facts for 12 September 2018

On 12 September 2018, 595 weather records were set or tied at long-record stations worldwide.
373 were record highs and 108 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 18 monthly and 576 daily.
Guba set a monthly record daily precipitation of 99.6 mm (3.9 in) on 12 September 2018.
Across 164 earlier years (1793 to 2026) the same calendar date averaged 412 records.

Record Map

595 stations

595 station records on 12 September 2018 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 12 September 2018: highest significance records shown on the map
Station	Country	Type	Value	Significance
Guba	Azerbaijan	Record daily precipitation	99.6 mm (3.9 in)	75 of 100 (Major)
Mahinahina 466	United States	Record daily precipitation	50.8 mm (2.0 in)	75 of 100 (Major)
Waikapu 390	United States	Record daily precipitation	53.3 mm (2.1 in)	68 of 100 (Major)
Zhangwu	China	Record daily precipitation	103.6 mm (4.1 in)	57 of 100 (Notable)
Aseral	Norway	Record daily precipitation	114.2 mm (4.5 in)	55 of 100 (Notable)
Beretania Pump STN 705	United States	Record daily precipitation	35.1 mm (1.4 in)	50 of 100 (Notable)
Kealakekua 26.2	United States	Record high minimum temperature	20.6 C (69.1 F)	50 of 100 (Notable)
Nuuanu Rsch 4 783	United States	Record daily precipitation	118.9 mm (4.7 in)	50 of 100 (Notable)
Wilhelmina Rise 721	United States	Record daily precipitation	44.5 mm (1.8 in)	50 of 100 (Notable)
Briksdal	Norway	Record daily precipitation	47.2 mm (1.9 in)	46 of 100 (Notable)
Myklebust I Breim	Norway	Record daily precipitation	47.0 mm (1.9 in)	44 of 100 (Notable)
Vik I Sogn III	Norway	Record daily precipitation	33.9 mm (1.3 in)	43 of 100 (Notable)
N Foster 1 E	United States	Record daily precipitation	67.3 mm (2.6 in)	43 of 100 (Notable)
Waihee Vly 482	United States	Record daily precipitation	35.8 mm (1.4 in)	43 of 100 (Notable)
Orskog	Norway	Record daily precipitation	49.8 mm (2.0 in)	42 of 100 (Notable)
Njandoma	Russia	Record daily precipitation	25.9 mm (1.0 in)	42 of 100 (Notable)
Dumas	United States	Record low maximum temperature	22.2 C (72.0 F)	42 of 100 (Notable)
Sogndal - Selseng	Norway	Record daily precipitation	39.2 mm (1.5 in)	41 of 100 (Notable)
Jefferson 2 E	United States	Record high minimum temperature	18.3 C (64.9 F)	41 of 100 (Notable)
Marion	United States	Record high minimum temperature	21.1 C (70.0 F)	41 of 100 (Notable)
Shelby 2 NW	United States	Record high minimum temperature	20.6 C (69.1 F)	41 of 100 (Notable)
Milan Exp STN	United States	Record low maximum temperature	21.7 C (71.1 F)	41 of 100 (Notable)
Wytheville	United States	Record high minimum temperature	18.9 C (66.0 F)	41 of 100 (Notable)
Winston Salem Reynolds AP	United States	Record high minimum temperature	21.1 C (70.0 F)	41 of 100 (Notable)
Atyrau	Kazakhstan	Record high minimum temperature	21.5 C (70.7 F)	40 of 100 (Notable)
Astrakan	Russia	Record high minimum temperature	20.3 C (68.5 F)	40 of 100 (Notable)
Bay City Wtr Wks	United States	Record low maximum temperature	22.8 C (73.0 F)	40 of 100 (Notable)
Aspendell	United States	Record high maximum temperature	24.4 C (75.9 F)	39 of 100 (Notable)
Honolulu Intl AP	United States	Record low maximum temperature	27.2 C (81.0 F)	39 of 100 (Notable)
Shionomisaki	Japan	Record daily precipitation	124.0 mm (4.9 in)	38 of 100 (Notable)
Aerop.Internacional	Mexico	Record daily precipitation	182.1 mm (7.2 in)	38 of 100 (Notable)
Snow Hill 4 N	United States	Record high minimum temperature	23.3 C (73.9 F)	38 of 100 (Notable)
Two Harbors	United States	Record high minimum temperature	18.9 C (66.0 F)	38 of 100 (Notable)
Savonlinna Savonranta	Finland	Record daily precipitation	37.4 mm (1.5 in)	37 of 100 (Notable)
Harbin	China	Record daily precipitation	32.3 mm (1.3 in)	36 of 100 (Notable)
Waiehu Camp 484	United States	Record daily precipitation	34.8 mm (1.4 in)	36 of 100 (Notable)
Pipe Spring Nm	United States	Record high maximum temperature	39.4 C (102.9 F)	35 of 100 (Notable)
Williams	United States	Record high minimum temperature	16.1 C (61.0 F)	35 of 100 (Notable)
Belfast	United States	Record daily precipitation	46.7 mm (1.8 in)	35 of 100 (Notable)
UNIV of Hawaii 713	United States	Record daily precipitation	30.7 mm (1.2 in)	35 of 100 (Notable)
Kellerberrin	Australia	Record low minimum temperature	0.0 C (32.0 F)	34 of 100 (Routine)
Mys Billingsa	Russia	Record high minimum temperature	8.7 C (47.7 F)	34 of 100 (Routine)
Alum Fk	United States	Record low maximum temperature	21.7 C (71.1 F)	34 of 100 (Routine)
Falfurrias	United States	Record daily precipitation	127.5 mm (5.0 in)	34 of 100 (Routine)
King Salmon	United States	Record high maximum temperature	22.2 C (72.0 F)	34 of 100 (Routine)
Ft Collins	United States	Record high maximum temperature	33.3 C (91.9 F)	33 of 100 (Routine)
Caesars Head	United States	Record daily precipitation	92.7 mm (3.6 in)	33 of 100 (Routine)
Freeport 2 NW	United States	Record daily precipitation	133.4 mm (5.3 in)	33 of 100 (Routine)
Kapalua-W Maui AP 462.4	United States	Record daily precipitation	25.4 mm (1.0 in)	33 of 100 (Routine)
Pauoa Flats 784	United States	Record daily precipitation	113.5 mm (4.5 in)	33 of 100 (Routine)
Rheinau-Memprechtshofen	Germany	Record high maximum temperature	32.5 C (90.5 F)	32 of 100 (Routine)
Oksendal	Norway	Record daily precipitation	28.4 mm (1.1 in)	32 of 100 (Routine)
Oksningoy	Norway	Record daily precipitation	30.0 mm (1.2 in)	32 of 100 (Routine)
Kyzyl-Ozek	Russia	Record low maximum temperature	6.8 C (44.2 F)	32 of 100 (Routine)
Fichtelberg	Germany	Record high maximum temperature	23.4 C (74.1 F)	31 of 100 (Routine)
Five Points 5 SSW	United States	Record low minimum temperature	6.7 C (44.1 F)	31 of 100 (Routine)
Kingsville	United States	Record daily precipitation	56.6 mm (2.2 in)	31 of 100 (Routine)
Nurmes Mujejarvi	Finland	Record daily precipitation	25.4 mm (1.0 in)	30 of 100 (Routine)
Lavik	Norway	Record daily precipitation	56.9 mm (2.2 in)	30 of 100 (Routine)
Glenwood 2WNW	United States	Record high minimum temperature	20.0 C (68.0 F)	30 of 100 (Routine)

Counts by Type and Timescale

595 records

Records set or tied on 12 September 2018 by type: Highest daily maximum 150, Lowest daily maximum 76, Highest daily minimum 223, Lowest daily minimum 32, Heaviest daily rainfall 114.

Records on 12 September 2018 by type
Record type	Records
Highest daily maximum	150
Lowest daily maximum	76
Highest daily minimum	223
Lowest daily minimum	32
Heaviest daily rainfall	114
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 12 September 2018 by timescale: all-time 1, monthly 18, daily 576.

How Much Records Were Beaten By

449 broken records

Margins by which the 449 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 76.9. Ties are not counted.

Top 20 by Significance

12 September 2018

Top 20 records on 12 September 2018 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
12 September 2018	Guba, AZ	monthly rain	99.6 mm (3.9 in)	48.6 mm (1.9 in)	56 years	75 of 100 (Major)
12 September 2018	Mahinahina 466, US	daily rain	50.8 mm (2.0 in)	30.0 mm (1.2 in)	95 years	75 of 100 (Major)
12 September 2018	Waikapu 390, US	daily rain	53.3 mm (2.1 in)	33.0 mm (1.3 in)	92 years	68 of 100 (Major)
12 September 2018	Zhangwu, CN	daily rain	103.6 mm (4.1 in)	76.9 mm (3.0 in)	39 years	57 of 100 (Notable)
12 September 2018	Aseral, NO	all-time rain	114.2 mm (4.5 in)	11.1 mm (0.4 in)	59 years	55 of 100 (Notable)
12 September 2018	Beretania Pump STN 705, US	daily rain	35.1 mm (1.4 in)	29.0 mm (1.1 in)	13 years	50 of 100 (Notable)
12 September 2018	Kealakekua 26.2, US	daily high min	20.6 C (69.1 F)	1.2 C (2.2 F)	107 years	50 of 100 (Notable)
12 September 2018	Nuuanu Rsch 4 783, US	daily rain	118.9 mm (4.7 in)	74.2 mm (2.9 in)	9 years	50 of 100 (Notable)
12 September 2018	Wilhelmina Rise 721, US	daily rain	44.5 mm (1.8 in)	30.5 mm (1.2 in)	12 years	50 of 100 (Notable)
12 September 2018	Briksdal, NO	daily rain	47.2 mm (1.9 in)	9.4 mm (0.37 in)	93 years	46 of 100 (Notable)
12 September 2018	Myklebust I Breim, NO	daily rain	47.0 mm (1.9 in)	7.4 mm (0.29 in)	95 years	44 of 100 (Notable)
12 September 2018	Vik I Sogn III, NO	daily rain	33.9 mm (1.3 in)	2.9 mm (0.11 in)	101 years	43 of 100 (Notable)
12 September 2018	N Foster 1 E, US	daily rain	67.3 mm (2.6 in)	40.6 mm (1.6 in)	43 years	43 of 100 (Notable)
12 September 2018	Waihee Vly 482, US	daily rain	35.8 mm (1.4 in)	16.0 mm (0.6 in)	57 years	43 of 100 (Notable)
12 September 2018	Orskog, NO	daily rain	49.8 mm (2.0 in)	24.3 mm (1.0 in)	48 years	42 of 100 (Notable)
12 September 2018	Njandoma, RU	daily rain	25.9 mm (1.0 in)	13.0 mm (0.5 in)	28 years	42 of 100 (Notable)
12 September 2018	Dumas, US	daily low max	22.2 C (72.0 F)	2.2 C (4.0 F)	92 years	42 of 100 (Notable)
12 September 2018	Sogndal - Selseng, NO	daily rain	39.2 mm (1.5 in)	1.1 mm (0.04 in)	101 years	41 of 100 (Notable)
12 September 2018	Jefferson 2 E, US	daily high min	18.3 C (64.9 F)	0.5 C (0.9 F)	107 years	41 of 100 (Notable)
12 September 2018	Marion, US	daily high min	21.1 C (70.0 F)	0.5 C (0.9 F)	103 years	41 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

1793 to 2018

Records set or tied on this calendar date in each year from 1793 to 2018. 2018 had 595 records.

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

Records on 09-12 in each year
Year	Records
1793	2
1809	1
1813	1
1814	2
1834	1
1837	2
1839	1
1847	1
1848	1
1854	4
1859	2
1860	2
1865	2
1866	1
1867	1
1868	2
1869	1
1872	2
1876	1
1878	1
1880	1
1881	1
1882	1
1884	2
1885	2
1886	1
1887	2
1888	2
1889	1
1891	4
1892	1
1893	4
1894	1
1895	5
1896	2
1897	3
1898	3
1899	4
1900	1
1901	5
1902	11
1903	18
1904	7
1905	8
1906	24
1907	11
1908	12
1909	11
1910	4
1911	15
1912	20
1913	12
1914	49
1915	71
1916	21
1917	231
1918	42
1919	69
1920	49
1921	60
1922	136
1923	33
1924	177
1925	443
1926	89
1927	339
1928	155
1929	118
1930	198
1931	648
1932	199
1933	360
1934	176
1935	441
1936	515
1937	318
1938	332
1939	702
1940	891
1941	172
1942	337
1943	544
1944	393
1945	414
1946	302
1947	596
1948	292
1949	512
1950	578
1951	399
1952	575
1953	515
1954	313
1955	457
1956	389
1957	727
1958	783
1959	536
1960	772
1961	750
1962	407
1963	466
1964	836
1965	459
1966	416
1967	510
1968	428
1969	558
1970	619
1971	593
1972	430
1973	588
1974	575
1975	1,102
1976	539
1977	524
1978	952
1979	765
1980	511
1981	424
1982	993
1983	915
1984	700
1985	876
1986	787
1987	686
1988	997
1989	1,313
1990	1,001
1991	672
1992	767
1993	798
1994	550
1995	532
1996	1,014
1997	737
1998	1,770
1999	938
2000	1,188
2001	797
2002	883
2003	830
2004	653
2005	1,032
2006	963
2007	776
2008	1,213
2009	876
2010	939
2011	988
2012	639
2013	1,066
2014	1,374
2015	704
2016	748
2017	1,114
2018	595
2019	884
2020	566
2021	513
2022	739
2023	844
2024	1,009
2025	433
2026	627

Download the Data

Data for records on 2018-09-12: 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 10	408
10 to 20	20
20 to 30	8
30 to 40	6
40 to 50	3
50 to 60	0
60 to 70	2
70 to 80	2