Weather Records on 18 September 1969

424 weather records were set or tied worldwide on 18 September 1969. Highest significance: Hamlin 1SW, US.

Key Facts for 18 September 1969

On 18 September 1969, 424 weather records were set or tied at long-record stations worldwide.
81 were record highs and 118 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 10 monthly and 413 daily.
Hamlin 1SW set a daily record precipitation of 66.5 mm (2.6 in) on 18 September 1969.
Across 163 earlier years (1803 to 2026) the same calendar date averaged 421 records.

Record Map

424 stations

424 station records on 18 September 1969 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 September 1969: highest significance records shown on the map
Station	Country	Type	Value	Significance
Hamlin 1SW	United States	Record daily precipitation	66.5 mm (2.6 in)	53 of 100 (Notable)
New Bern 3 NW	United States	Record daily precipitation	123.4 mm (4.9 in)	52 of 100 (Notable)
Corvallis	United States	Record daily precipitation	47.2 mm (1.9 in)	52 of 100 (Notable)
Uchur	Russia	Record daily precipitation	33.8 mm (1.3 in)	47 of 100 (Notable)
Paxton	United States	Record daily precipitation	45.7 mm (1.8 in)	46 of 100 (Notable)
Corvallis State UNIV	United States	Record daily precipitation	55.4 mm (2.2 in)	46 of 100 (Notable)
Hope	United States	Record daily precipitation	76.2 mm (3.0 in)	43 of 100 (Notable)
Roby	United States	Record daily precipitation	70.6 mm (2.8 in)	41 of 100 (Notable)
Bogotol	Russia	Record daily precipitation	27.7 mm (1.1 in)	40 of 100 (Notable)
Mason City	United States	Record daily precipitation	29.7 mm (1.2 in)	40 of 100 (Notable)
Aldan	Russia	Record daily precipitation	28.1 mm (1.1 in)	37 of 100 (Notable)
Concrete Ppl Fish STN	United States	Record daily precipitation	38.4 mm (1.5 in)	37 of 100 (Notable)
Garhakota	India	Record daily precipitation	144.0 mm (5.7 in)	36 of 100 (Notable)
Anderson 1 N	United States	Record daily precipitation	59.7 mm (2.4 in)	36 of 100 (Notable)
Greeley	United States	Record daily precipitation	33.8 mm (1.3 in)	36 of 100 (Notable)
Minden	United States	Record daily precipitation	70.1 mm (2.8 in)	36 of 100 (Notable)
Elwood 8 S	United States	Record daily precipitation	45.2 mm (1.8 in)	35 of 100 (Notable)
Bertrand	United States	Record daily precipitation	50.5 mm (2.0 in)	34 of 100 (Routine)
Vancouver 4 NNE	United States	Record daily precipitation	38.9 mm (1.5 in)	34 of 100 (Routine)
Diablo Dam	United States	Record daily precipitation	30.7 mm (1.2 in)	33 of 100 (Routine)
Durham	United Kingdom	Record high minimum temperature	13.3 C (55.9 F)	32 of 100 (Routine)
Stapleton 5 SSE	United States	Record daily precipitation	36.3 mm (1.4 in)	32 of 100 (Routine)
Everett	United States	Record daily precipitation	35.6 mm (1.4 in)	32 of 100 (Routine)
Tarnaby	Sweden	Record low minimum temperature	-4.8 C (23.4 F)	31 of 100 (Routine)
Greenfield	United States	Record daily precipitation	40.9 mm (1.6 in)	31 of 100 (Routine)
Melrose	United States	Record daily precipitation	25.4 mm (1.0 in)	31 of 100 (Routine)
Prospect	United States	Record daily precipitation	30.2 mm (1.2 in)	31 of 100 (Routine)
Middletown	United States	Record daily precipitation	40.6 mm (1.6 in)	30 of 100 (Routine)
Ravenna	United States	Record daily precipitation	35.3 mm (1.4 in)	29 of 100 (Routine)
Stratford	United States	Record daily precipitation	41.1 mm (1.6 in)	29 of 100 (Routine)
Kenai AP	United States	Record high maximum temperature	18.9 C (66.0 F)	29 of 100 (Routine)
Yemmiganur	India	Record daily precipitation	69.6 mm (2.7 in)	28 of 100 (Routine)
Armoor(Armur)	India	Record daily precipitation	95.0 mm (3.7 in)	28 of 100 (Routine)
Chornomorske	Ukraine	Record daily precipitation	91.8 mm (3.6 in)	28 of 100 (Routine)
Rainier Paradise Rs	United States	Record daily precipitation	42.7 mm (1.7 in)	28 of 100 (Routine)
Seattle UNIV of Washin	United States	Record daily precipitation	36.1 mm (1.4 in)	28 of 100 (Routine)
Kyzyl-Ozek	Russia	Record daily precipitation	28.1 mm (1.1 in)	27 of 100 (Routine)
Greencastle 1 W	United States	Record daily precipitation	43.4 mm (1.7 in)	27 of 100 (Routine)
Rushville	United States	Record daily precipitation	27.9 mm (1.1 in)	27 of 100 (Routine)
Gulbarga	India	Record daily precipitation	66.0 mm (2.6 in)	26 of 100 (Routine)
Badiraguato (Smn)	Mexico	Record low minimum temperature	15.0 C (59.0 F)	26 of 100 (Routine)
Achinsk	Russia	Record low maximum temperature	5.9 C (42.6 F)	26 of 100 (Routine)
Nikolaev	Ukraine	Record daily precipitation	32.0 mm (1.3 in)	26 of 100 (Routine)
Pascagoula 3 NE	United States	Record high minimum temperature	25.0 C (77.0 F)	26 of 100 (Routine)
Kearney 4 NE	United States	Record daily precipitation	34.8 mm (1.4 in)	26 of 100 (Routine)
Rocky Mt	United States	Record daily precipitation	86.9 mm (3.4 in)	26 of 100 (Routine)
Port Alice	Canada	Record daily precipitation	63.8 mm (2.5 in)	25 of 100 (Routine)
Grand Coteau	United States	Record daily precipitation	46.2 mm (1.8 in)	25 of 100 (Routine)
Mansfield 5 W	United States	Record daily precipitation	36.8 mm (1.4 in)	25 of 100 (Routine)
Summit	United States	Record daily precipitation	34.8 mm (1.4 in)	25 of 100 (Routine)
Bremerton	United States	Record daily precipitation	43.7 mm (1.7 in)	25 of 100 (Routine)
Pervomajskoe	Russia	Record low maximum temperature	5.8 C (42.4 F)	24 of 100 (Routine)
Glenwood Spgs #2	United States	Record low minimum temperature	-2.2 C (28.0 F)	24 of 100 (Routine)
E Stroudsburg	United States	Record daily precipitation	29.7 mm (1.2 in)	24 of 100 (Routine)
Voru	Estonia	Record low maximum temperature	6.6 C (43.9 F)	23 of 100 (Routine)
Tartu	Estonia	Record low maximum temperature	7.1 C (44.8 F)	23 of 100 (Routine)
Jowlynalla	India	Record daily precipitation	68.6 mm (2.7 in)	23 of 100 (Routine)
Gijon la Merced	Spain	Record daily precipitation	65.2 mm (2.6 in)	23 of 100 (Routine)
Inverness 3 SE	United States	Record daily precipitation	55.1 mm (2.2 in)	23 of 100 (Routine)
Detroit	United States	Record daily precipitation	27.7 mm (1.1 in)	23 of 100 (Routine)

Counts by Type and Timescale

424 records

Records set or tied on 18 September 1969 by type: Highest daily maximum 28, Lowest daily maximum 81, Highest daily minimum 53, Lowest daily minimum 37, Heaviest daily rainfall 225.

Records on 18 September 1969 by type
Record type	Records
Highest daily maximum	28
Lowest daily maximum	81
Highest daily minimum	53
Lowest daily minimum	37
Heaviest daily rainfall	225
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 18 September 1969 by timescale: all-time 1, monthly 10, daily 413.

How Much Records Were Beaten By

355 broken records

Margins by which the 355 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 48.7. Ties are not counted.

Top 20 by Significance

18 September 1969

Top 20 records on 18 September 1969 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 September 1969	Hamlin 1SW, US	daily rain	66.5 mm (2.6 in)	48.7 mm (1.9 in)	55 years	53 of 100 (Notable)
18 September 1969	New Bern 3 NW, US	daily rain	123.4 mm (4.9 in)	42.1 mm (1.7 in)	94 years	52 of 100 (Notable)
18 September 1969	Corvallis, US	monthly rain	47.2 mm (1.9 in)	20.8 mm (0.8 in)	23 years	52 of 100 (Notable)
18 September 1969	Uchur, RU	daily rain	33.8 mm (1.3 in)	23.8 mm (0.9 in)	16 years	47 of 100 (Notable)
18 September 1969	Paxton, US	daily rain	45.7 mm (1.8 in)	37.3 mm (1.5 in)	23 years	46 of 100 (Notable)
18 September 1969	Corvallis State UNIV, US	monthly rain	55.4 mm (2.2 in)	15.3 mm (0.6 in)	24 years	46 of 100 (Notable)
18 September 1969	Hope, US	daily rain	76.2 mm (3.0 in)	47.5 mm (1.9 in)	27 years	43 of 100 (Notable)
18 September 1969	Roby, US	daily rain	70.6 mm (2.8 in)	23.6 mm (0.9 in)	70 years	41 of 100 (Notable)
18 September 1969	Bogotol, RU	monthly rain	27.7 mm (1.1 in)	6.7 mm (0.26 in)	32 years	40 of 100 (Notable)
18 September 1969	Mason City, US	daily rain	29.7 mm (1.2 in)	18.5 mm (0.7 in)	72 years	40 of 100 (Notable)
18 September 1969	Aldan, RU	daily rain	28.1 mm (1.1 in)	18.1 mm (0.7 in)	12 years	37 of 100 (Notable)
18 September 1969	Concrete Ppl Fish STN, US	daily rain	38.4 mm (1.5 in)	15.5 mm (0.6 in)	55 years	37 of 100 (Notable)
18 September 1969	Garhakota, IN	monthly rain	144.0 mm (5.7 in)	32.7 mm (1.3 in)	18 years	36 of 100 (Notable)
18 September 1969	Anderson 1 N, US	daily rain	59.7 mm (2.4 in)	21.6 mm (0.9 in)	46 years	36 of 100 (Notable)
18 September 1969	Greeley, US	daily rain	33.8 mm (1.3 in)	17.3 mm (0.7 in)	52 years	36 of 100 (Notable)
18 September 1969	Minden, US	daily rain	70.1 mm (2.8 in)	26.9 mm (1.1 in)	38 years	36 of 100 (Notable)
18 September 1969	Elwood 8 S, US	daily rain	45.2 mm (1.8 in)	17.3 mm (0.7 in)	52 years	35 of 100 (Notable)
18 September 1969	Bertrand, US	daily rain	50.5 mm (2.0 in)	30.2 mm (1.2 in)	10 years	34 of 100 (Routine)
18 September 1969	Vancouver 4 NNE, US	daily rain	38.9 mm (1.5 in)	7.9 mm (0.31 in)	48 years	34 of 100 (Routine)
18 September 1969	Diablo Dam, US	daily rain	30.7 mm (1.2 in)	17.0 mm (0.7 in)	48 years	33 of 100 (Routine)

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

1803 to 1969

Records set or tied on this calendar date in each year from 1803 to 1969. 1969 had 424 records.

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

Records on 09-18 in each year
Year	Records
1803	1
1811	1
1814	1
1819	1
1829	1
1832	1
1834	1
1835	1
1837	2
1847	2
1848	1
1849	1
1851	4
1859	1
1861	1
1865	1
1869	1
1871	1
1875	1
1876	2
1877	1
1879	1
1880	1
1881	1
1882	1
1885	1
1886	4
1889	6
1890	1
1891	1
1893	4
1894	2
1895	2
1896	4
1897	3
1898	5
1899	3
1900	2
1901	10
1902	8
1903	58
1904	6
1905	22
1906	16
1907	4
1908	11
1909	17
1910	5
1911	8
1912	43
1913	44
1914	56
1915	41
1916	58
1917	99
1918	57
1919	48
1920	56
1921	213
1922	45
1923	114
1924	62
1925	269
1926	205
1927	189
1928	114
1929	309
1930	124
1931	429
1932	226
1933	370
1934	188
1935	281
1936	155
1937	422
1938	373
1939	190
1940	402
1941	318
1942	1,001
1943	624
1944	503
1945	732
1946	576
1947	927
1948	427
1949	356
1950	370
1951	320
1952	340
1953	245
1954	446
1955	672
1956	587
1957	429
1958	491
1959	829
1960	351
1961	478
1962	360
1963	453
1964	282
1965	1,172
1966	498
1967	357
1968	763
1969	424
1970	377
1971	1,245
1972	691
1973	593
1974	559
1975	976
1976	615
1977	619
1978	1,162
1979	709
1980	652
1981	1,671
1982	603
1983	936
1984	951
1985	636
1986	730
1987	1,244
1988	997
1989	778
1990	904
1991	1,377
1992	821
1993	747
1994	852
1995	935
1996	1,237
1997	935
1998	1,038
1999	583
2000	1,146
2001	993
2002	828
2003	815
2004	1,027
2005	781
2006	1,309
2007	670
2008	697
2009	692
2010	1,040
2011	1,050
2012	922
2013	666
2014	682
2015	934
2016	893
2017	518
2018	1,200
2019	768
2020	682
2021	582
2022	613
2023	639
2024	687
2025	471
2026	864

Download the Data

Data for records on 1969-09-18: 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).

Histogram of margins by which records were beaten on 18 September 1969
Margin	Records
0 to 10	292
10 to 20	45
20 to 30	11
30 to 40	3
40 to 50	4