Weather Records on 15 September 2015

997 weather records were set or tied worldwide on 15 September 2015. Highest significance: Culver City, US.

Key Facts for 15 September 2015

On 15 September 2015, 997 weather records were set or tied at long-record stations worldwide.
499 were record highs and 158 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 19 monthly and 977 daily.
Culver City set a daily record precipitation of 63.5 mm (2.5 in) on 15 September 2015.
Across 170 earlier years (1797 to 2026) the same calendar date averaged 409 records.

Record Map

997 stations

997 station records on 15 September 2015 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 15 September 2015: highest significance records shown on the map
Station	Country	Type	Value	Significance
Culver City	United States	Record daily precipitation	63.5 mm (2.5 in)	72 of 100 (Major)
Medvezegorsk	Russia	Record daily precipitation	99.1 mm (3.9 in)	66 of 100 (Major)
Los Angeles Downtown/Usc	United States	Record daily precipitation	60.7 mm (2.4 in)	64 of 100 (Major)
Anchorage Merrill Fld	United States	Record daily precipitation	29.2 mm (1.1 in)	61 of 100 (Major)
U C L A	United States	Record daily precipitation	66.5 mm (2.6 in)	59 of 100 (Notable)
Big Tujunga Dam Fc46	United States	Record daily precipitation	33.8 mm (1.3 in)	58 of 100 (Notable)
Ponferrada	Spain	Record daily precipitation	41.8 mm (1.6 in)	56 of 100 (Notable)
Bulken	Norway	Record snow depth	33.0 cm (13.0 in)	55 of 100 (Notable)
Tunhovd	Norway	Record daily precipitation	32.0 mm (1.3 in)	55 of 100 (Notable)
San Diego Miramar NAS	United States	Record daily precipitation	25.7 mm (1.0 in)	55 of 100 (Notable)
Belle Ile - le Talut	France	Record daily precipitation	36.2 mm (1.4 in)	52 of 100 (Notable)
Nuuanu Rsch 5 775	United States	Record daily precipitation	61.5 mm (2.4 in)	52 of 100 (Notable)
Pauoa Flats 784	United States	Record daily precipitation	135.4 mm (5.3 in)	52 of 100 (Notable)
Sandhamn	Sweden	Record daily precipitation	41.6 mm (1.6 in)	51 of 100 (Notable)
Riverside Fire STN 3	United States	Record daily precipitation	33.3 mm (1.3 in)	51 of 100 (Notable)
Hobart (Ellerslie Road)	Australia	Record high minimum temperature	15.0 C (59.0 F)	50 of 100 (Notable)
Waiahole 837	United States	Record daily precipitation	114.3 mm (4.5 in)	49 of 100 (Notable)
Surin	Thailand	Record daily precipitation	89.7 mm (3.5 in)	48 of 100 (Notable)
Mt Wilson Cbs	United States	Record daily precipitation	84.8 mm (3.3 in)	48 of 100 (Notable)
Chama	United States	Record high minimum temperature	12.8 C (55.0 F)	48 of 100 (Notable)
Wilhelmina Rise 721	United States	Record daily precipitation	38.9 mm (1.5 in)	48 of 100 (Notable)
Diamond Peak	United States	Record daily precipitation	27.9 mm (1.1 in)	48 of 100 (Notable)
Kaena Pt 841.3	United States	Record daily precipitation	41.9 mm (1.6 in)	46 of 100 (Notable)
Palolo Vly 718	United States	Record daily precipitation	111.8 mm (4.4 in)	46 of 100 (Notable)
Ostre Toten - Apelsvoll	Norway	Record daily precipitation	25.2 mm (1.0 in)	45 of 100 (Notable)
Oceanside Marina	United States	Record daily precipitation	27.2 mm (1.1 in)	45 of 100 (Notable)
Pasadena	United States	Record daily precipitation	38.1 mm (1.5 in)	45 of 100 (Notable)
San Gabriel Fire Dept	United States	Record daily precipitation	42.2 mm (1.7 in)	44 of 100 (Notable)
Vista	United States	Record daily precipitation	29.2 mm (1.1 in)	44 of 100 (Notable)
Tryvasshogda	Norway	Record daily precipitation	33.0 mm (1.3 in)	43 of 100 (Notable)
Ft Valley	United States	Record high minimum temperature	11.1 C (52.0 F)	43 of 100 (Notable)
Watsonville Wtr Wks	United States	Record high minimum temperature	16.7 C (62.1 F)	43 of 100 (Notable)
Ft Collins	United States	Record high minimum temperature	15.6 C (60.1 F)	43 of 100 (Notable)
Leroy 5 WSW	United States	Record high maximum temperature	33.9 C (93.0 F)	43 of 100 (Notable)
Cimarron 4 SW	United States	Record high minimum temperature	14.4 C (57.9 F)	43 of 100 (Notable)
Shoreham	Australia	Record daily precipitation	30.2 mm (1.2 in)	42 of 100 (Notable)
Betatakin	United States	Record low minimum temperature	-5.0 C (23.0 F)	42 of 100 (Notable)
Davenport	United States	Record low maximum temperature	12.2 C (54.0 F)	42 of 100 (Notable)
Indio Fire STN	United States	Record low maximum temperature	30.6 C (87.1 F)	41 of 100 (Notable)
Rocky Ford 2 SE	United States	Record high minimum temperature	17.2 C (63.0 F)	41 of 100 (Notable)
Westcliffe	United States	Record high minimum temperature	12.2 C (54.0 F)	41 of 100 (Notable)
Camilla 3SE	United States	Record low minimum temperature	10.0 C (50.0 F)	41 of 100 (Notable)
Lynch	United States	Record high maximum temperature	33.9 C (93.0 F)	41 of 100 (Notable)
Flagstaff AP	United States	Record high minimum temperature	11.7 C (53.1 F)	41 of 100 (Notable)
Hastings	Australia	Record daily precipitation	26.8 mm (1.1 in)	40 of 100 (Notable)
Perl-Nennig	Germany	Record daily precipitation	26.5 mm (1.0 in)	40 of 100 (Notable)
Lompoc	United States	Record high minimum temperature	18.9 C (66.0 F)	40 of 100 (Notable)
Newport Beach Harbor	United States	Record daily precipitation	26.2 mm (1.0 in)	40 of 100 (Notable)
Kalaupapa 563	United States	Record daily precipitation	29.7 mm (1.2 in)	40 of 100 (Notable)
Abjorsbraten	Norway	Record daily precipitation	37.3 mm (1.5 in)	39 of 100 (Notable)
Altadena	United States	Record daily precipitation	38.9 mm (1.5 in)	39 of 100 (Notable)
Hachita 1W	United States	Record high minimum temperature	20.6 C (69.1 F)	39 of 100 (Notable)
Mosquero 1 NE	United States	Record high minimum temperature	16.1 C (61.0 F)	39 of 100 (Notable)
Phillip Island Penguin Reserve	Australia	Record daily precipitation	25.8 mm (1.0 in)	38 of 100 (Notable)
Postmyr I Drangedal	Norway	Record daily precipitation	57.4 mm (2.3 in)	38 of 100 (Notable)
Mogoca	Russia	Record high maximum temperature	28.2 C (82.8 F)	38 of 100 (Notable)
Elista	Russia	Record daily precipitation	25.1 mm (1.0 in)	38 of 100 (Notable)
Vigo Peinador	Spain	Record daily precipitation	53.5 mm (2.1 in)	38 of 100 (Notable)
Big Bear Lake	United States	Record daily precipitation	32.3 mm (1.3 in)	38 of 100 (Notable)
Old Faithful	United States	Record high minimum temperature	7.8 C (46.0 F)	38 of 100 (Notable)

Counts by Type and Timescale

997 records

Records set or tied on 15 September 2015 by type: Highest daily maximum 191, Lowest daily maximum 58, Highest daily minimum 308, Lowest daily minimum 100, Heaviest daily rainfall 339, Deepest snow cover 1.

Records on 15 September 2015 by type
Record type	Records
Highest daily maximum	191
Lowest daily maximum	58
Highest daily minimum	308
Lowest daily minimum	100
Heaviest daily rainfall	339
Heaviest daily snowfall	0
Deepest snow cover	1

Records on 15 September 2015 by timescale: all-time 1, monthly 19, daily 977.

How Much Records Were Beaten By

820 broken records

Margins by which the 820 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 280.0. Ties are not counted.

Top 20 by Significance

15 September 2015

Top 20 records on 15 September 2015 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 September 2015	Culver City, US	daily rain	63.5 mm (2.5 in)	63.5 mm (2.5 in)	80 years	72 of 100 (Major)
15 September 2015	Medvezegorsk, RU	all-time rain	99.1 mm (3.9 in)	38.1 mm (1.5 in)	3 years	66 of 100 (Major)
15 September 2015	Los Angeles Downtown/Usc, US	daily rain	60.7 mm (2.4 in)	59.9 mm (2.4 in)	46 years	64 of 100 (Major)
15 September 2015	Anchorage Merrill Fld, US	daily rain	29.2 mm (1.1 in)	17.0 mm (0.7 in)	77 years	61 of 100 (Major)
15 September 2015	U C L A, US	monthly rain	66.5 mm (2.6 in)	18.2 mm (0.7 in)	75 years	59 of 100 (Notable)
15 September 2015	Big Tujunga Dam Fc46, US	daily rain	33.8 mm (1.3 in)	33.8 mm (1.3 in)	82 years	58 of 100 (Notable)
15 September 2015	Ponferrada, ES	daily rain	41.8 mm (1.6 in)	25.1 mm (1.0 in)	54 years	56 of 100 (Notable)
15 September 2015	Bulken, NO	monthly snow depth	33.0 cm (13.0 in)	28.0 cm (11.0 in)	24 years	55 of 100 (Notable)
15 September 2015	Tunhovd, NO	daily rain	32.0 mm (1.3 in)	11.9 mm (0.5 in)	70 years	55 of 100 (Notable)
15 September 2015	San Diego Miramar NAS, US	daily rain	25.7 mm (1.0 in)	24.9 mm (1.0 in)	32 years	55 of 100 (Notable)
15 September 2015	Belle Ile - le Talut, FR	daily rain	36.2 mm (1.4 in)	17.5 mm (0.7 in)	61 years	52 of 100 (Notable)
15 September 2015	Nuuanu Rsch 5 775, US	daily rain	61.5 mm (2.4 in)	34.6 mm (1.4 in)	9 years	52 of 100 (Notable)
15 September 2015	Pauoa Flats 784, US	daily rain	135.4 mm (5.3 in)	67.8 mm (2.7 in)	22 years	52 of 100 (Notable)
15 September 2015	Sandhamn, SE	daily rain	41.6 mm (1.6 in)	30.2 mm (1.2 in)	21 years	51 of 100 (Notable)
15 September 2015	Riverside Fire STN 3, US	daily rain	33.3 mm (1.3 in)	30.8 mm (1.2 in)	17 years	51 of 100 (Notable)
15 September 2015	Hobart (Ellerslie Road), AU	daily high min	15.0 C (59.0 F)	2.9 C (5.2 F)	119 years	50 of 100 (Notable)
15 September 2015	Waiahole 837, US	daily rain	114.3 mm (4.5 in)	33.0 mm (1.3 in)	72 years	49 of 100 (Notable)
15 September 2015	Surin, TH	daily rain	89.7 mm (3.5 in)	48.5 mm (1.9 in)	58 years	48 of 100 (Notable)
15 September 2015	Mt Wilson Cbs, US	daily rain	84.8 mm (3.3 in)	81.8 mm (3.2 in)	32 years	48 of 100 (Notable)
15 September 2015	Chama, US	daily high min	12.8 C (55.0 F)	2.8 C (5.0 F)	104 years	48 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

1797 to 2015

Records set or tied on this calendar date in each year from 1797 to 2015. 2015 had 997 records.

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

Records on 09-15 in each year
Year	Records
1797	1
1803	1
1806	2
1810	1
1816	1
1818	1
1823	2
1833	1
1836	1
1837	2
1839	1
1841	1
1848	1
1850	1
1851	1
1854	2
1856	1
1857	1
1859	1
1864	1
1865	2
1866	1
1867	2
1868	1
1869	1
1872	1
1873	2
1876	2
1877	2
1880	1
1881	1
1882	6
1884	3
1885	4
1886	2
1887	3
1888	1
1889	5
1890	1
1894	4
1895	1
1897	1
1898	3
1899	3
1900	1
1901	12
1902	7
1903	31
1904	30
1905	16
1906	6
1907	7
1908	16
1909	16
1910	2
1911	40
1912	64
1913	43
1914	18
1915	94
1916	44
1917	50
1918	50
1919	52
1920	164
1921	122
1922	53
1923	193
1924	103
1925	112
1926	134
1927	539
1928	86
1929	99
1930	235
1931	422
1932	295
1933	322
1934	351
1935	463
1936	460
1937	337
1938	247
1939	1,098
1940	181
1941	276
1942	278
1943	360
1944	396
1945	418
1946	411
1947	621
1948	557
1949	523
1950	750
1951	283
1952	455
1953	400
1954	518
1955	532
1956	646
1957	449
1958	294
1959	844
1960	410
1961	586
1962	557
1963	455
1964	839
1965	614
1966	534
1967	578
1968	429
1969	362
1970	1,157
1971	598
1972	356
1973	774
1974	386
1975	739
1976	667
1977	400
1978	628
1979	1,022
1980	563
1981	613
1982	1,315
1983	756
1984	766
1985	764
1986	928
1987	719
1988	818
1989	955
1990	911
1991	1,165
1992	919
1993	2,227
1994	1,363
1995	723
1996	1,212
1997	1,177
1998	1,768
1999	858
2000	1,175
2001	837
2002	1,212
2003	855
2004	893
2005	1,123
2006	1,042
2007	946
2008	1,153
2009	773
2010	913
2011	1,170
2012	568
2013	854
2014	443
2015	997
2016	988
2017	825
2018	874
2019	538
2020	785
2021	467
2022	392
2023	507
2024	681
2025	503
2026	779

Download the Data

Data for records on 2015-09-15: 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 50	814
50 to 100	5
100 to 150	0
150 to 200	0
200 to 250	0
250 to 300	1