Weather Records on 15 September 1965

614 weather records were set or tied worldwide on 15 September 1965. Highest significance: Owosso Wwtp, US.

Key Facts for 15 September 1965

On 15 September 1965, 614 weather records were set or tied at long-record stations worldwide.
159 were record highs and 193 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 15 monthly and 597 daily.
Owosso Wwtp set a daily record precipitation of 54.4 mm (2.1 in) on 15 September 1965.
Across 170 earlier years (1797 to 2026) the same calendar date averaged 412 records.

Record Map

614 stations

614 station records on 15 September 1965 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 15 September 1965: highest significance records shown on the map
Station	Country	Type	Value	Significance
Owosso Wwtp	United States	Record daily precipitation	54.4 mm (2.1 in)	67 of 100 (Major)
Monroe City	United States	Record daily precipitation	97.8 mm (3.9 in)	64 of 100 (Major)
Regina Int'l A	Canada	Record daily snowfall	13.0 cm (5.1 in)	58 of 100 (Notable)
Albion 5 E	United States	Record daily precipitation	84.3 mm (3.3 in)	53 of 100 (Notable)
Qu'appelle	Canada	Record daily snowfall	12.2 cm (4.8 in)	52 of 100 (Notable)
Goshen 3SW	United States	Record daily precipitation	58.9 mm (2.3 in)	52 of 100 (Notable)
London State Fish Hatchery	United States	Record daily precipitation	67.3 mm (2.6 in)	51 of 100 (Notable)
Plymouth Pwr Substn	United States	Record daily precipitation	68.6 mm (2.7 in)	50 of 100 (Notable)
Grenfell	Canada	Record daily snowfall	7.6 cm (3.0 in)	47 of 100 (Notable)
Beaver Is	United States	Record daily precipitation	50.8 mm (2.0 in)	47 of 100 (Notable)
Indian Head Cda	Canada	Record daily snowfall	7.6 cm (3.0 in)	46 of 100 (Notable)
Gibson City	United States	Record daily precipitation	64.3 mm (2.5 in)	46 of 100 (Notable)
Greenville Wtp	United States	Record daily precipitation	55.6 mm (2.2 in)	46 of 100 (Notable)
Defiance	United States	Record daily precipitation	56.4 mm (2.2 in)	45 of 100 (Notable)
Toledo Blade	United States	Record daily precipitation	38.1 mm (1.5 in)	45 of 100 (Notable)
Medicine Hat A	Canada	Record daily snowfall	5.6 cm (2.2 in)	44 of 100 (Notable)
Whitewood	Canada	Record daily snowfall	10.2 cm (4.0 in)	44 of 100 (Notable)
Lingasugur	India	Record daily precipitation	91.4 mm (3.6 in)	44 of 100 (Notable)
Leavenworth Dam 44	United States	Record daily precipitation	66.0 mm (2.6 in)	44 of 100 (Notable)
Urbana Wrf	United States	Record daily precipitation	53.6 mm (2.1 in)	44 of 100 (Notable)
Caron	Canada	Record daily snowfall	11.9 cm (4.7 in)	43 of 100 (Notable)
Fort Qu'appelle	Canada	Record daily snowfall	11.9 cm (4.7 in)	43 of 100 (Notable)
Farmland 5 NNW	United States	Record daily precipitation	72.9 mm (2.9 in)	43 of 100 (Notable)
Choteau	United States	Record daily snowfall	7.6 cm (3.0 in)	43 of 100 (Notable)
Gibson Dam	United States	Record daily snowfall	15.2 cm (6.0 in)	43 of 100 (Notable)
Burnie (No 1)	Australia	Record daily precipitation	27.4 mm (1.1 in)	42 of 100 (Notable)
Saint Ignatius	United States	Record daily snowfall	7.6 cm (3.0 in)	42 of 100 (Notable)
Mountain View	Canada	Record daily snowfall	15.2 cm (6.0 in)	40 of 100 (Notable)
Decatur 1 N	United States	Record daily precipitation	54.4 mm (2.1 in)	40 of 100 (Notable)
Ovando	United States	Record daily snowfall	7.6 cm (3.0 in)	40 of 100 (Notable)
Mountain View Birdseye	Canada	Record daily snowfall	15.2 cm (6.0 in)	39 of 100 (Notable)
Hobart 2 WNW	United States	Record daily precipitation	69.1 mm (2.7 in)	39 of 100 (Notable)
Jeffersonville	United States	Record daily precipitation	47.5 mm (1.9 in)	39 of 100 (Notable)
W Lafayette 6 NW	United States	Record daily precipitation	97.8 mm (3.9 in)	39 of 100 (Notable)
Fort Macleod	Canada	Record low maximum temperature	1.7 C (35.1 F)	38 of 100 (Notable)
Bloomington Normal	United States	Record daily precipitation	86.1 mm (3.4 in)	38 of 100 (Notable)
Cascade 5 S	United States	Record daily snowfall	5.1 cm (2.0 in)	38 of 100 (Notable)
Conrad	United States	Record daily snowfall	8.9 cm (3.5 in)	38 of 100 (Notable)
Anadarko 3 E	United States	Record high minimum temperature	25.6 C (78.1 F)	38 of 100 (Notable)
Moosomin	Canada	Record daily snowfall	6.4 cm (2.5 in)	37 of 100 (Notable)
Rochester	United States	Record daily precipitation	58.9 mm (2.3 in)	37 of 100 (Notable)
Monroe	United States	Record daily precipitation	48.5 mm (1.9 in)	37 of 100 (Notable)
Paris 5 S	United States	Record daily precipitation	140.5 mm (5.5 in)	37 of 100 (Notable)
Ft Benton	United States	Record daily snowfall	5.1 cm (2.0 in)	37 of 100 (Notable)
Rapelje	United States	Record daily snowfall	7.6 cm (3.0 in)	37 of 100 (Notable)
Regina Int'l A	Canada	Record low maximum temperature	3.9 C (39.0 F)	36 of 100 (Notable)
Yellow Grass	Canada	Record daily snowfall	7.9 cm (3.1 in)	36 of 100 (Notable)
Pontiac	United States	Record daily precipitation	67.6 mm (2.7 in)	36 of 100 (Notable)
Strasbourg	Canada	Record daily snowfall	7.1 cm (2.8 in)	35 of 100 (Notable)
Milaca	United States	Record daily precipitation	29.7 mm (1.2 in)	35 of 100 (Notable)
Red Lodge	United States	Record daily snowfall	5.1 cm (2.0 in)	35 of 100 (Notable)
Goldbutte 7 N	United States	Record daily snowfall	5.1 cm (2.0 in)	34 of 100 (Routine)
Holter Dam	United States	Record daily snowfall	5.1 cm (2.0 in)	34 of 100 (Routine)
Liffey	Australia	Record daily precipitation	38.9 mm (1.5 in)	33 of 100 (Routine)
Gingee	India	Record daily precipitation	100.0 mm (3.9 in)	33 of 100 (Routine)
Anderson 1 N	United States	Record daily precipitation	63.8 mm (2.5 in)	33 of 100 (Routine)
Fowler	United States	Record daily precipitation	46.2 mm (1.8 in)	33 of 100 (Routine)
Piqua	United States	Record daily precipitation	42.9 mm (1.7 in)	33 of 100 (Routine)
Detroit	United States	Record high minimum temperature	11.7 C (53.1 F)	33 of 100 (Routine)
Caldwell	Canada	Record daily snowfall	12.7 cm (5.0 in)	32 of 100 (Routine)

Counts by Type and Timescale

614 records

Records set or tied on 15 September 1965 by type: Highest daily maximum 85, Lowest daily maximum 142, Highest daily minimum 74, Lowest daily minimum 51, Heaviest daily rainfall 182, Heaviest daily snowfall 74, Deepest snow cover 6.

Records on 15 September 1965 by type
Record type	Records
Highest daily maximum	85
Lowest daily maximum	142
Highest daily minimum	74
Lowest daily minimum	51
Heaviest daily rainfall	182
Heaviest daily snowfall	74
Deepest snow cover	6

Records on 15 September 1965 by timescale: all-time 2, monthly 15, daily 597.

How Much Records Were Beaten By

495 broken records

Margins by which the 495 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 152.0. Ties are not counted.

Top 20 by Significance

15 September 1965

Top 20 records on 15 September 1965 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
15 September 1965	Owosso Wwtp, US	daily rain	54.4 mm (2.1 in)	44.2 mm (1.7 in)	66 years	67 of 100 (Major)
15 September 1965	Monroe City, US	daily rain	97.8 mm (3.9 in)	71.9 mm (2.8 in)	60 years	64 of 100 (Major)
15 September 1965	Regina Int'l A, CA	daily snowfall	13.0 cm (5.1 in)	13.0 cm (5.1 in)	80 years	58 of 100 (Notable)
15 September 1965	Albion 5 E, US	daily rain	84.3 mm (3.3 in)	50.0 mm (2.0 in)	27 years	53 of 100 (Notable)
15 September 1965	Qu'appelle, CA	daily snowfall	12.2 cm (4.8 in)	12.2 cm (4.8 in)	81 years	52 of 100 (Notable)
15 September 1965	Goshen 3SW, US	daily rain	58.9 mm (2.3 in)	41.6 mm (1.6 in)	34 years	52 of 100 (Notable)
15 September 1965	London State Fish Hatchery, US	daily rain	67.3 mm (2.6 in)	41.9 mm (1.6 in)	39 years	51 of 100 (Notable)
15 September 1965	Plymouth Pwr Substn, US	daily rain	68.6 mm (2.7 in)	39.6 mm (1.6 in)	34 years	50 of 100 (Notable)
15 September 1965	Grenfell, CA	daily snowfall	7.6 cm (3.0 in)	7.6 cm (3.0 in)	80 years	47 of 100 (Notable)
15 September 1965	Beaver Is, US	daily rain	50.8 mm (2.0 in)	26.2 mm (1.0 in)	44 years	47 of 100 (Notable)
15 September 1965	Indian Head Cda, CA	daily snowfall	7.6 cm (3.0 in)	7.6 cm (3.0 in)	79 years	46 of 100 (Notable)
15 September 1965	Gibson City, US	daily rain	64.3 mm (2.5 in)	50.3 mm (2.0 in)	18 years	46 of 100 (Notable)
15 September 1965	Greenville Wtp, US	daily rain	55.6 mm (2.2 in)	36.0 mm (1.4 in)	39 years	46 of 100 (Notable)
15 September 1965	Defiance, US	daily rain	56.4 mm (2.2 in)	30.0 mm (1.2 in)	40 years	45 of 100 (Notable)
15 September 1965	Toledo Blade, US	daily rain	38.1 mm (1.5 in)	18.0 mm (0.7 in)	68 years	45 of 100 (Notable)
15 September 1965	Medicine Hat A, CA	daily snowfall	5.6 cm (2.2 in)	5.6 cm (2.2 in)	80 years	44 of 100 (Notable)
15 September 1965	Whitewood, CA	daily snowfall	10.2 cm (4.0 in)	10.2 cm (4.0 in)	60 years	44 of 100 (Notable)
15 September 1965	Lingasugur, IN	daily rain	91.4 mm (3.6 in)	36.8 mm (1.4 in)	63 years	44 of 100 (Notable)
15 September 1965	Leavenworth Dam 44, US	daily rain	66.0 mm (2.6 in)	50.5 mm (2.0 in)	8 years	44 of 100 (Notable)
15 September 1965	Urbana Wrf, US	daily rain	53.6 mm (2.1 in)	26.9 mm (1.1 in)	54 years	44 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 1965

Records set or tied on this calendar date in each year from 1797 to 1965. 1965 had 614 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 1965-09-15: 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 20	402
20 to 40	42
40 to 60	24
60 to 80	17
80 to 100	1
100 to 120	3
120 to 140	3
140 to 160	3