Weather Records on 12 September 2015

704 weather records were set or tied worldwide on 12 September 2015. Highest significance: Opihihale #2 24.1, US.

Key Facts for 12 September 2015

On 12 September 2015, 704 weather records were set or tied at long-record stations worldwide.
502 were record highs and 85 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 14 monthly and 688 daily.
Opihihale #2 24.1 set a daily record precipitation of 146.1 mm (5.8 in) on 12 September 2015.
Across 164 earlier years (1793 to 2026) the same calendar date averaged 411 records.

Record Map

704 stations

704 station records on 12 September 2015 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 12 September 2015: highest significance records shown on the map
Station	Country	Type	Value	Significance
Opihihale #2 24.1	United States	Record daily precipitation	146.1 mm (5.8 in)	56 of 100 (Notable)
Punchbowl Crater 709	United States	Record daily precipitation	75.2 mm (3.0 in)	56 of 100 (Notable)
Elizabethton	United States	Record daily precipitation	58.4 mm (2.3 in)	55 of 100 (Notable)
Kaneohe 838.1	United States	Record daily precipitation	68.6 mm (2.7 in)	55 of 100 (Notable)
Nizhne-Tambovskoe	Russia	Record daily precipitation	42.3 mm (1.7 in)	53 of 100 (Notable)
Le Puy - Loudes	France	Record daily precipitation	68.2 mm (2.7 in)	49 of 100 (Notable)
Austwell	United States	Record daily precipitation	63.8 mm (2.5 in)	49 of 100 (Notable)
Honaunau 27	United States	Record daily precipitation	109.2 mm (4.3 in)	49 of 100 (Notable)
Nemours (Ghazaouet)	Algeria	Record high maximum temperature	31.8 C (89.2 F)	48 of 100 (Notable)
Lennestadt-Theten	Germany	Record daily precipitation	31.5 mm (1.2 in)	48 of 100 (Notable)
Lihue WSO AP 1020.1	United States	Record daily precipitation	60.2 mm (2.4 in)	48 of 100 (Notable)
Danevang 1 W	United States	Record daily precipitation	54.4 mm (2.1 in)	47 of 100 (Notable)
Waimanalo Exp F 795.1	United States	Record daily precipitation	57.9 mm (2.3 in)	47 of 100 (Notable)
Hetch Hetchy	United States	Record high minimum temperature	20.0 C (68.0 F)	45 of 100 (Notable)
Rochester Gtr Intl	United States	Record daily precipitation	40.4 mm (1.6 in)	45 of 100 (Notable)
Red Rvr	United States	Record high maximum temperature	27.8 C (82.0 F)	44 of 100 (Notable)
Milolii 2.34	United States	Record daily precipitation	49.3 mm (1.9 in)	44 of 100 (Notable)
Erie Intl AP	United States	Record daily precipitation	64.5 mm (2.5 in)	43 of 100 (Notable)
Innadong	Australia	Record daily precipitation	38.0 mm (1.5 in)	41 of 100 (Notable)
Dandaragan West	Australia	Record daily precipitation	25.6 mm (1.0 in)	40 of 100 (Notable)
Oceanside Marina	United States	Record high minimum temperature	23.3 C (73.9 F)	40 of 100 (Notable)
Yosemite Park HQ	United States	Record high minimum temperature	20.0 C (68.0 F)	40 of 100 (Notable)
New Hampton	United States	Record low maximum temperature	10.6 C (51.1 F)	40 of 100 (Notable)
Morgan City	United States	Record low maximum temperature	22.8 C (73.0 F)	40 of 100 (Notable)
Cascade Locks	United States	Record high maximum temperature	33.3 C (91.9 F)	40 of 100 (Notable)
Key West NAS	United States	Record high minimum temperature	29.4 C (84.9 F)	40 of 100 (Notable)
Watertown AP	United States	Record daily precipitation	42.9 mm (1.7 in)	40 of 100 (Notable)
Marengo	United States	Record daily precipitation	30.0 mm (1.2 in)	39 of 100 (Notable)
N Tonawanda	United States	Record daily precipitation	63.5 mm (2.5 in)	39 of 100 (Notable)
Grants Pass	United States	Record high maximum temperature	40.6 C (105.1 F)	39 of 100 (Notable)
Alton	United States	Record high maximum temperature	31.1 C (88.0 F)	39 of 100 (Notable)
Imperial Beach Ream Fld NAS	United States	Record high maximum temperature	31.7 C (89.1 F)	39 of 100 (Notable)
Fallon Exp STN	United States	Record high maximum temperature	35.6 C (96.1 F)	38 of 100 (Notable)
Gridino	Russia	Record high maximum temperature	22.1 C (71.8 F)	37 of 100 (Notable)
Roseburg Rgnl AP	United States	Record high minimum temperature	16.7 C (62.1 F)	36 of 100 (Notable)
Murmansk	Russia	Record high maximum temperature	20.4 C (68.7 F)	35 of 100 (Notable)
Finike	Turkey	Record high maximum temperature	40.0 C (104.0 F)	35 of 100 (Notable)
Monterey	United States	Record low maximum temperature	18.9 C (66.0 F)	35 of 100 (Notable)
Almaty	Kazakhstan	Record high maximum temperature	33.4 C (92.1 F)	34 of 100 (Routine)
Podor	Senegal	Record daily precipitation	46.0 mm (1.8 in)	34 of 100 (Routine)
El Campo	United States	Record low maximum temperature	24.4 C (75.9 F)	34 of 100 (Routine)
Kastamonu	Turkey	Record high minimum temperature	14.8 C (58.6 F)	33 of 100 (Routine)
Palmdale	United States	Record high minimum temperature	22.2 C (72.0 F)	33 of 100 (Routine)
Camilla 3SE	United States	Record low maximum temperature	26.1 C (79.0 F)	33 of 100 (Routine)
Chardon	United States	Record daily precipitation	47.2 mm (1.9 in)	33 of 100 (Routine)
Millau	France	Record daily precipitation	60.0 mm (2.4 in)	32 of 100 (Routine)
Babuskin	Russia	Record high maximum temperature	26.8 C (80.2 F)	32 of 100 (Routine)
Kosch-Agach	Russia	Record high maximum temperature	23.8 C (74.8 F)	32 of 100 (Routine)
Santa Ana Fire STN	United States	Record high minimum temperature	23.9 C (75.0 F)	32 of 100 (Routine)
Portland Intl AP	United States	Record high minimum temperature	17.2 C (63.0 F)	32 of 100 (Routine)
Juncos 1 SE	Puerto Rico [United States]	Record high maximum temperature	35.6 C (96.1 F)	31 of 100 (Routine)
Antioch Pumping Plt #3	United States	Record high maximum temperature	41.1 C (106.0 F)	31 of 100 (Routine)
Harlingen	United States	Record daily precipitation	58.7 mm (2.3 in)	31 of 100 (Routine)
Matagorda #2	United States	Record low maximum temperature	23.9 C (75.0 F)	31 of 100 (Routine)
Reno AP	United States	Record high maximum temperature	35.6 C (96.1 F)	31 of 100 (Routine)
Magadan	Russia	Record high minimum temperature	10.3 C (50.5 F)	30 of 100 (Routine)
Edirne	Turkey	Record daily precipitation	34.8 mm (1.4 in)	30 of 100 (Routine)
Simferopol	Ukraine	Record high minimum temperature	17.7 C (63.9 F)	30 of 100 (Routine)
Calaveras Big Trees	United States	Record high minimum temperature	17.2 C (63.0 F)	30 of 100 (Routine)
Santa Barbara	United States	Record high minimum temperature	20.6 C (69.1 F)	30 of 100 (Routine)

Counts by Type and Timescale

704 records

Records set or tied on 12 September 2015 by type: Highest daily maximum 284, Lowest daily maximum 54, Highest daily minimum 218, Lowest daily minimum 31, Heaviest daily rainfall 117.

Records on 12 September 2015 by type
Record type	Records
Highest daily maximum	284
Lowest daily maximum	54
Highest daily minimum	218
Lowest daily minimum	31
Heaviest daily rainfall	117
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 12 September 2015 by timescale: all-time 2, monthly 14, daily 688.

How Much Records Were Beaten By

561 broken records

Margins by which the 561 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 126.8. Ties are not counted.

Top 20 by Significance

12 September 2015

Top 20 records on 12 September 2015 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
12 September 2015	Opihihale #2 24.1, US	daily rain	146.1 mm (5.8 in)	126.8 mm (5.0 in)	36 years	56 of 100 (Notable)
12 September 2015	Punchbowl Crater 709, US	monthly rain	75.2 mm (3.0 in)	18.6 mm (0.7 in)	0 years	56 of 100 (Notable)
12 September 2015	Elizabethton, US	daily rain	58.4 mm (2.3 in)	18.0 mm (0.7 in)	94 years	55 of 100 (Notable)
12 September 2015	Kaneohe 838.1, US	daily rain	68.6 mm (2.7 in)	17.8 mm (0.7 in)	92 years	55 of 100 (Notable)
12 September 2015	Nizhne-Tambovskoe, RU	daily rain	42.3 mm (1.7 in)	18.8 mm (0.7 in)	72 years	53 of 100 (Notable)
12 September 2015	Le Puy - Loudes, FR	daily rain	68.2 mm (2.7 in)	44.2 mm (1.7 in)	20 years	49 of 100 (Notable)
12 September 2015	Austwell, US	daily rain	63.8 mm (2.5 in)	37.1 mm (1.5 in)	78 years	49 of 100 (Notable)
12 September 2015	Honaunau 27, US	daily rain	109.2 mm (4.3 in)	85.1 mm (3.4 in)	8 years	49 of 100 (Notable)
12 September 2015	Nemours (Ghazaouet), DZ	daily high max	31.8 C (89.2 F)	1.8 C (3.2 F)	115 years	48 of 100 (Notable)
12 September 2015	Lennestadt-Theten, DE	daily rain	31.5 mm (1.2 in)	14.2 mm (0.6 in)	57 years	48 of 100 (Notable)
12 September 2015	Lihue WSO AP 1020.1, US	daily rain	60.2 mm (2.4 in)	45.2 mm (1.8 in)	6 years	48 of 100 (Notable)
12 September 2015	Danevang 1 W, US	daily rain	54.4 mm (2.1 in)	17.3 mm (0.7 in)	115 years	47 of 100 (Notable)
12 September 2015	Waimanalo Exp F 795.1, US	daily rain	57.9 mm (2.3 in)	46.7 mm (1.8 in)	12 years	47 of 100 (Notable)
12 September 2015	Hetch Hetchy, US	daily high min	20.0 C (68.0 F)	2.8 C (5.0 F)	92 years	45 of 100 (Notable)
12 September 2015	Rochester Gtr Intl, US	daily rain	40.4 mm (1.6 in)	12.2 mm (0.5 in)	80 years	45 of 100 (Notable)
12 September 2015	Red Rvr, US	daily high max	27.8 C (82.0 F)	1.7 C (3.1 F)	102 years	44 of 100 (Notable)
12 September 2015	Milolii 2.34, US	daily rain	49.3 mm (1.9 in)	43.2 mm (1.7 in)	4 years	44 of 100 (Notable)
12 September 2015	Erie Intl AP, US	daily rain	64.5 mm (2.5 in)	33.3 mm (1.3 in)	28 years	43 of 100 (Notable)
12 September 2015	Innadong, AU	daily rain	38.0 mm (1.5 in)	1.2 mm (0.05 in)	104 years	41 of 100 (Notable)
12 September 2015	Dandaragan West, AU	daily rain	25.6 mm (1.0 in)	11.4 mm (0.4 in)	54 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

1793 to 2015

Records set or tied on this calendar date in each year from 1793 to 2015. 2015 had 704 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 2015-09-12: 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 20	542
20 to 40	12
40 to 60	5
60 to 80	0
80 to 100	1
100 to 120	0
120 to 140	1