Weather Records on 12 September 2017

1,114 weather records were set or tied worldwide on 12 September 2017. Highest significance: Rome, US.

Key Facts for 12 September 2017

On 12 September 2017, 1,114 weather records were set or tied at long-record stations worldwide.
524 were record highs and 352 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 30 monthly and 1,083 daily.
Rome set a daily record precipitation of 104.4 mm (4.1 in) on 12 September 2017.
Across 164 earlier years (1793 to 2026) the same calendar date averaged 409 records.

Record Map

1,114 stations

1,114 station records on 12 September 2017 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 12 September 2017: highest significance records shown on the map
Station	Country	Type	Value	Significance
Rome	United States	Record daily precipitation	104.4 mm (4.1 in)	80 of 100 (Exceptional)
Carrollton	United States	Record daily precipitation	128.0 mm (5.0 in)	65 of 100 (Major)
Newnan 7 WNW	United States	Record daily precipitation	114.8 mm (4.5 in)	65 of 100 (Major)
Walterboro 1 SW	United States	Record daily precipitation	120.7 mm (4.8 in)	65 of 100 (Major)
Dallas 7 NE	United States	Record daily precipitation	108.7 mm (4.3 in)	62 of 100 (Major)
Jonesboro	United States	Record daily precipitation	108.5 mm (4.3 in)	62 of 100 (Major)
Little Mtn	United States	Record daily precipitation	62.5 mm (2.5 in)	62 of 100 (Major)
Sewanee	United States	Record low maximum temperature	13.3 C (55.9 F)	62 of 100 (Major)
Woodbury	United States	Record daily precipitation	136.9 mm (5.4 in)	60 of 100 (Major)
Louisville 1 E	United States	Record daily precipitation	87.6 mm (3.4 in)	59 of 100 (Notable)
Jacksonville	United States	Record daily precipitation	87.1 mm (3.4 in)	57 of 100 (Notable)
Troy	United States	Record low maximum temperature	15.6 C (60.1 F)	57 of 100 (Notable)
Vero Beach 4SE	United States	Record daily precipitation	153.9 mm (6.1 in)	57 of 100 (Notable)
N Fk 2	United States	Record daily precipitation	80.3 mm (3.2 in)	55 of 100 (Notable)
Winnsboro	United States	Record daily precipitation	51.6 mm (2.0 in)	55 of 100 (Notable)
Greensboro	United States	Record low maximum temperature	18.3 C (64.9 F)	54 of 100 (Notable)
Selma	United States	Record low maximum temperature	18.3 C (64.9 F)	54 of 100 (Notable)
Andrews	United States	Record daily precipitation	121.9 mm (4.8 in)	54 of 100 (Notable)
Yemassee 1 N	United States	Record daily precipitation	160.0 mm (6.3 in)	54 of 100 (Notable)
Glen St Mary 1 W	United States	Record daily precipitation	237.7 mm (9.4 in)	53 of 100 (Notable)
Hawkinsville	United States	Record daily precipitation	98.0 mm (3.9 in)	53 of 100 (Notable)
Rome	United States	Record low maximum temperature	15.6 C (60.1 F)	53 of 100 (Notable)
Tifton	United States	Record daily precipitation	77.7 mm (3.1 in)	53 of 100 (Notable)
Rison	United States	Record low maximum temperature	17.2 C (63.0 F)	51 of 100 (Notable)
Appling 2 NW	United States	Record daily precipitation	106.7 mm (4.2 in)	51 of 100 (Notable)
Thorsby Exp STN	United States	Record low maximum temperature	14.4 C (57.9 F)	50 of 100 (Notable)
Hartwell	United States	Record low maximum temperature	17.8 C (64.0 F)	50 of 100 (Notable)
Jefferson 2 E	United States	Record low maximum temperature	14.4 C (57.9 F)	50 of 100 (Notable)
Waynesville 1 E	United States	Record daily precipitation	81.3 mm (3.2 in)	50 of 100 (Notable)
Manning	United States	Record daily precipitation	96.8 mm (3.8 in)	50 of 100 (Notable)
Saluda	United States	Record daily precipitation	82.0 mm (3.2 in)	50 of 100 (Notable)
Murfreesboro 5 N	United States	Record low maximum temperature	17.2 C (63.0 F)	50 of 100 (Notable)
Allatoona Dam 2	United States	Record daily precipitation	76.2 mm (3.0 in)	48 of 100 (Notable)
Morganton	United States	Record low maximum temperature	15.0 C (59.0 F)	48 of 100 (Notable)
Alexander City	United States	Record daily precipitation	76.7 mm (3.0 in)	47 of 100 (Notable)
Haleyville	United States	Record low maximum temperature	16.7 C (62.1 F)	47 of 100 (Notable)
Lexington	United States	Record daily precipitation	77.2 mm (3.0 in)	47 of 100 (Notable)
Talbotton	United States	Record low maximum temperature	17.2 C (63.0 F)	47 of 100 (Notable)
W Pt	United States	Record daily precipitation	104.9 mm (4.1 in)	47 of 100 (Notable)
Siler City 2 N	United States	Record low maximum temperature	17.8 C (64.0 F)	47 of 100 (Notable)
Canyon Dam	United States	Record high minimum temperature	13.3 C (55.9 F)	46 of 100 (Notable)
Elberton 2 N	United States	Record daily precipitation	58.4 mm (2.3 in)	46 of 100 (Notable)
Midville Exp STN	United States	Record daily precipitation	100.3 mm (3.9 in)	46 of 100 (Notable)
Washington 2 ESE	United States	Record daily precipitation	65.0 mm (2.6 in)	46 of 100 (Notable)
Boone 1 SE	United States	Record daily precipitation	79.5 mm (3.1 in)	46 of 100 (Notable)
Brevard	United States	Record low maximum temperature	15.0 C (59.0 F)	46 of 100 (Notable)
Zadar	Croatia	Record daily precipitation	213.4 mm (8.4 in)	45 of 100 (Notable)
Ko Samui	Thailand	Record daily precipitation	75.2 mm (3.0 in)	45 of 100 (Notable)
Samsun	Turkey	Record high maximum temperature	35.1 C (95.2 F)	45 of 100 (Notable)
Simferopol	Ukraine	Record high maximum temperature	36.0 C (96.8 F)	45 of 100 (Notable)
Concord	United States	Record low maximum temperature	17.8 C (64.0 F)	45 of 100 (Notable)
Anderson	United States	Record daily precipitation	50.3 mm (2.0 in)	45 of 100 (Notable)
Newberry	United States	Record daily precipitation	80.5 mm (3.2 in)	45 of 100 (Notable)
Minsk	Belarus	Record high minimum temperature	16.5 C (61.7 F)	44 of 100 (Notable)
Nolinsk	Russia	Record daily precipitation	25.4 mm (1.0 in)	44 of 100 (Notable)
Scottsboro	United States	Record low maximum temperature	16.7 C (62.1 F)	44 of 100 (Notable)
Glen St Mary 1 W	United States	Record low maximum temperature	22.2 C (72.0 F)	44 of 100 (Notable)
Brooklet 1 W	United States	Record daily precipitation	92.7 mm (3.6 in)	44 of 100 (Notable)
Mt Airy 2 W	United States	Record low maximum temperature	16.1 C (61.0 F)	44 of 100 (Notable)
Columbia UNIV of Sc	United States	Record daily precipitation	57.2 mm (2.3 in)	44 of 100 (Notable)

Counts by Type and Timescale

1,114 records

Records set or tied on 12 September 2017 by type: Highest daily maximum 239, Lowest daily maximum 272, Highest daily minimum 285, Lowest daily minimum 80, Heaviest daily rainfall 238.

Records on 12 September 2017 by type
Record type	Records
Highest daily maximum	239
Lowest daily maximum	272
Highest daily minimum	285
Lowest daily minimum	80
Heaviest daily rainfall	238
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 12 September 2017 by timescale: all-time 1, monthly 30, daily 1,083.

How Much Records Were Beaten By

919 broken records

Margins by which the 919 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 178.4. Ties are not counted.

Top 20 by Significance

12 September 2017

Top 20 records on 12 September 2017 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
12 September 2017	Rome, US	daily rain	104.4 mm (4.1 in)	75.2 mm (3.0 in)	112 years	80 of 100 (Exceptional)
12 September 2017	Carrollton, US	daily rain	128.0 mm (5.0 in)	78.0 mm (3.1 in)	52 years	65 of 100 (Major)
12 September 2017	Newnan 7 WNW, US	daily rain	114.8 mm (4.5 in)	74.7 mm (2.9 in)	52 years	65 of 100 (Major)
12 September 2017	Walterboro 1 SW, US	daily rain	120.7 mm (4.8 in)	85.1 mm (3.4 in)	52 years	65 of 100 (Major)
12 September 2017	Dallas 7 NE, US	daily rain	108.7 mm (4.3 in)	91.7 mm (3.6 in)	52 years	62 of 100 (Major)
12 September 2017	Jonesboro, US	daily rain	108.5 mm (4.3 in)	70.1 mm (2.8 in)	52 years	62 of 100 (Major)
12 September 2017	Little Mtn, US	daily rain	62.5 mm (2.5 in)	41.2 mm (1.6 in)	111 years	62 of 100 (Major)
12 September 2017	Sewanee, US	daily low max	13.3 C (55.9 F)	8.4 C (15.1 F)	115 years	62 of 100 (Major)
12 September 2017	Woodbury, US	monthly rain	136.9 mm (5.4 in)	16.5 mm (0.6 in)	113 years	60 of 100 (Major)
12 September 2017	Louisville 1 E, US	daily rain	87.6 mm (3.4 in)	35.0 mm (1.4 in)	110 years	59 of 100 (Notable)
12 September 2017	Jacksonville, US	daily rain	87.1 mm (3.4 in)	65.5 mm (2.6 in)	59 years	57 of 100 (Notable)
12 September 2017	Troy, US	daily low max	15.6 C (60.1 F)	8.3 C (14.9 F)	82 years	57 of 100 (Notable)
12 September 2017	Vero Beach 4SE, US	daily rain	153.9 mm (6.1 in)	109.2 mm (4.3 in)	40 years	57 of 100 (Notable)
12 September 2017	N Fk 2, US	daily rain	80.3 mm (3.2 in)	51.9 mm (2.0 in)	64 years	55 of 100 (Notable)
12 September 2017	Winnsboro, US	daily rain	51.6 mm (2.0 in)	33.3 mm (1.3 in)	95 years	55 of 100 (Notable)
12 September 2017	Greensboro, US	daily low max	18.3 C (64.9 F)	5.0 C (9.0 F)	118 years	54 of 100 (Notable)
12 September 2017	Selma, US	daily low max	18.3 C (64.9 F)	5.0 C (9.0 F)	100 years	54 of 100 (Notable)
12 September 2017	Andrews, US	daily rain	121.9 mm (4.8 in)	103.4 mm (4.1 in)	30 years	54 of 100 (Notable)
12 September 2017	Yemassee 1 N, US	daily rain	160.0 mm (6.3 in)	111.2 mm (4.4 in)	16 years	54 of 100 (Notable)
12 September 2017	Glen St Mary 1 W, US	all-time rain	237.7 mm (9.4 in)	8.1 mm (0.32 in)	72 years	53 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 2017

Records set or tied on this calendar date in each year from 1793 to 2017. 2017 had 1,114 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 2017-09-12: 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 25	865
25 to 50	30
50 to 75	15
75 to 100	5
100 to 125	3
125 to 150	0
150 to 175	0
175 to 200	1