Weather Records on 18 September 1963

453 weather records were set or tied worldwide on 18 September 1963. Highest significance: Waipahu 750, US.

Key Facts for 18 September 1963

On 18 September 1963, 453 weather records were set or tied at long-record stations worldwide.
99 were record highs and 69 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 9 monthly and 442 daily.
Waipahu 750 set a daily record precipitation of 35.8 mm (1.4 in) on 18 September 1963.
Across 163 earlier years (1803 to 2026) the same calendar date averaged 421 records.

Record Map

453 stations

453 station records on 18 September 1963 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 September 1963: highest significance records shown on the map
Station	Country	Type	Value	Significance
Waipahu 750	United States	Record daily precipitation	35.8 mm (1.4 in)	62 of 100 (Major)
Squirrel Inn 1	United States	Record daily precipitation	108.2 mm (4.3 in)	58 of 100 (Notable)
Doodenanning	Australia	Record daily precipitation	27.4 mm (1.1 in)	57 of 100 (Notable)
Barooga	Australia	Record daily precipitation	31.2 mm (1.2 in)	57 of 100 (Notable)
Riverside Fire STN 3	United States	Record daily precipitation	34.8 mm (1.4 in)	57 of 100 (Notable)
Beaumont City	United States	Record daily precipitation	296.4 mm (11.7 in)	57 of 100 (Notable)
Waimea 892	United States	Record daily precipitation	34.3 mm (1.4 in)	55 of 100 (Notable)
Williams	United States	Record daily precipitation	49.0 mm (1.9 in)	53 of 100 (Notable)
Aiea Fld 764A	United States	Record daily precipitation	40.6 mm (1.6 in)	53 of 100 (Notable)
Quartzsite	United States	Record daily precipitation	42.4 mm (1.7 in)	52 of 100 (Notable)
Yuma Wb City	United States	Record daily precipitation	67.6 mm (2.7 in)	52 of 100 (Notable)
Pinjarra	Australia	Record daily precipitation	38.6 mm (1.5 in)	51 of 100 (Notable)
Kingman	United States	Record daily precipitation	40.6 mm (1.6 in)	51 of 100 (Notable)
Lilydale	Australia	Record daily precipitation	37.6 mm (1.5 in)	49 of 100 (Notable)
E Lawai 934	United States	Record daily precipitation	47.5 mm (1.9 in)	49 of 100 (Notable)
Narrogin	Australia	Record daily precipitation	25.9 mm (1.0 in)	48 of 100 (Notable)
Rayne 6 N	United States	Record daily precipitation	128.8 mm (5.1 in)	48 of 100 (Notable)
Horseshoe	Australia	Record daily precipitation	25.1 mm (1.0 in)	47 of 100 (Notable)
Daly River Police	Australia	Record daily precipitation	30.5 mm (1.2 in)	47 of 100 (Notable)
Big Bear Lake Dam	United States	Record daily precipitation	62.0 mm (2.4 in)	47 of 100 (Notable)
Jarrahdale	Australia	Record daily precipitation	43.7 mm (1.7 in)	46 of 100 (Notable)
Opids Camp Fc 57 Be	United States	Record daily precipitation	37.6 mm (1.5 in)	46 of 100 (Notable)
Badgebup	Australia	Record daily precipitation	31.5 mm (1.2 in)	45 of 100 (Notable)
Brawley 2 SW	United States	Record daily precipitation	31.5 mm (1.2 in)	45 of 100 (Notable)
San Bernardino F S 226	United States	Record daily precipitation	62.0 mm (2.4 in)	45 of 100 (Notable)
Crown King	United States	Record daily precipitation	58.2 mm (2.3 in)	44 of 100 (Notable)
Wikieup	United States	Record daily precipitation	51.3 mm (2.0 in)	44 of 100 (Notable)
Alton	United States	Record daily precipitation	39.6 mm (1.6 in)	43 of 100 (Notable)
Squirrel Inn 2	United States	Record daily precipitation	110.5 mm (4.4 in)	42 of 100 (Notable)
Kirbyville	United States	Record daily precipitation	218.9 mm (8.6 in)	42 of 100 (Notable)
Lihue 1020	United States	Record daily precipitation	44.2 mm (1.7 in)	41 of 100 (Notable)
Armadale	Australia	Record daily precipitation	31.8 mm (1.3 in)	40 of 100 (Notable)
Nyerilup	Australia	Record daily precipitation	26.2 mm (1.0 in)	40 of 100 (Notable)
Tropic	United States	Record daily precipitation	39.9 mm (1.6 in)	40 of 100 (Notable)
Wungong Dam	Australia	Record daily precipitation	38.9 mm (1.5 in)	39 of 100 (Notable)
Carcross	Canada	Record daily snowfall	9.1 cm (3.6 in)	39 of 100 (Notable)
Gorlitz	Germany	Record daily precipitation	61.6 mm (2.4 in)	38 of 100 (Notable)
Truxton Canyon	United States	Record daily precipitation	33.5 mm (1.3 in)	38 of 100 (Notable)
Avalon Pleasure Pier	United States	Record daily precipitation	37.8 mm (1.5 in)	38 of 100 (Notable)
Wandering Comparison	Australia	Record daily precipitation	25.1 mm (1.0 in)	37 of 100 (Notable)
Mecca Fire STN	United States	Record low maximum temperature	23.9 C (75.0 F)	36 of 100 (Notable)
Marradong	Australia	Record daily precipitation	29.5 mm (1.2 in)	34 of 100 (Routine)
St Augustine	United States	Record daily precipitation	241.8 mm (9.5 in)	34 of 100 (Routine)
Churchman Brook	Australia	Record daily precipitation	45.2 mm (1.8 in)	32 of 100 (Routine)
Beaufort	Australia	Record daily precipitation	25.4 mm (1.0 in)	32 of 100 (Routine)
Wonnaminta	Australia	Record daily precipitation	26.2 mm (1.0 in)	32 of 100 (Routine)
El Centro 2 SSW	United States	Record daily precipitation	25.4 mm (1.0 in)	32 of 100 (Routine)
San Bernardino F S 226	United States	Record low maximum temperature	21.1 C (70.0 F)	32 of 100 (Routine)
Beaver Is	United States	Record daily precipitation	30.5 mm (1.2 in)	32 of 100 (Routine)
Canning River Weir	Australia	Record daily precipitation	35.8 mm (1.4 in)	31 of 100 (Routine)
Uran	India	Record daily precipitation	70.0 mm (2.8 in)	31 of 100 (Routine)
Collegeville St John's	United States	Record daily precipitation	47.8 mm (1.9 in)	31 of 100 (Routine)
Kahuku 912	United States	Record low maximum temperature	25.6 C (78.1 F)	31 of 100 (Routine)
Milan 1NW	United States	Record daily precipitation	31.0 mm (1.2 in)	30 of 100 (Routine)
Nogliki	Russia	Record daily precipitation	47.8 mm (1.9 in)	29 of 100 (Routine)
Blythe	United States	Record daily precipitation	33.0 mm (1.3 in)	29 of 100 (Routine)
Cheboygan	United States	Record high minimum temperature	17.8 C (64.0 F)	29 of 100 (Routine)
Mill Creek 2	United States	Record daily precipitation	40.6 mm (1.6 in)	28 of 100 (Routine)
Kalamunda	Australia	Record daily precipitation	29.7 mm (1.2 in)	27 of 100 (Routine)
Sompeta	India	Record daily precipitation	52.0 mm (2.0 in)	27 of 100 (Routine)

Counts by Type and Timescale

453 records

Records set or tied on 18 September 1963 by type: Highest daily maximum 21, Lowest daily maximum 63, Highest daily minimum 78, Lowest daily minimum 6, Heaviest daily rainfall 284, Heaviest daily snowfall 1.

Records on 18 September 1963 by type
Record type	Records
Highest daily maximum	21
Lowest daily maximum	63
Highest daily minimum	78
Lowest daily minimum	6
Heaviest daily rainfall	284
Heaviest daily snowfall	1
Deepest snow cover	0

Records on 18 September 1963 by timescale: all-time 2, monthly 9, daily 442.

How Much Records Were Beaten By

393 broken records

Margins by which the 393 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 113.8. Ties are not counted.

Top 20 by Significance

18 September 1963

Top 20 records on 18 September 1963 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 September 1963	Waipahu 750, US	daily rain	35.8 mm (1.4 in)	27.9 mm (1.1 in)	56 years	62 of 100 (Major)
18 September 1963	Squirrel Inn 1, US	monthly rain	108.2 mm (4.3 in)	42.4 mm (1.7 in)	51 years	58 of 100 (Notable)
18 September 1963	Doodenanning, AU	daily rain	27.4 mm (1.1 in)	21.0 mm (0.8 in)	40 years	57 of 100 (Notable)
18 September 1963	Barooga, AU	daily rain	31.2 mm (1.2 in)	20.3 mm (0.8 in)	40 years	57 of 100 (Notable)
18 September 1963	Riverside Fire STN 3, US	daily rain	34.8 mm (1.4 in)	32.0 mm (1.3 in)	33 years	57 of 100 (Notable)
18 September 1963	Beaumont City, US	monthly rain	296.4 mm (11.7 in)	101.8 mm (4.0 in)	4 years	57 of 100 (Notable)
18 September 1963	Waimea 892, US	daily rain	34.3 mm (1.4 in)	24.4 mm (1.0 in)	36 years	55 of 100 (Notable)
18 September 1963	Williams, US	daily rain	49.0 mm (1.9 in)	36.6 mm (1.4 in)	37 years	53 of 100 (Notable)
18 September 1963	Aiea Fld 764A, US	daily rain	40.6 mm (1.6 in)	25.4 mm (1.0 in)	48 years	53 of 100 (Notable)
18 September 1963	Quartzsite, US	daily rain	42.4 mm (1.7 in)	42.4 mm (1.7 in)	54 years	52 of 100 (Notable)
18 September 1963	Yuma Wb City, US	daily rain	67.6 mm (2.7 in)	63.5 mm (2.5 in)	16 years	52 of 100 (Notable)
18 September 1963	Pinjarra, AU	daily rain	38.6 mm (1.5 in)	22.6 mm (0.9 in)	40 years	51 of 100 (Notable)
18 September 1963	Kingman, US	daily rain	40.6 mm (1.6 in)	39.8 mm (1.6 in)	37 years	51 of 100 (Notable)
18 September 1963	Lilydale, AU	daily rain	37.6 mm (1.5 in)	22.4 mm (0.9 in)	20 years	49 of 100 (Notable)
18 September 1963	E Lawai 934, US	daily rain	47.5 mm (1.9 in)	28.4 mm (1.1 in)	52 years	49 of 100 (Notable)
18 September 1963	Narrogin, AU	daily rain	25.9 mm (1.0 in)	15.0 mm (0.6 in)	40 years	48 of 100 (Notable)
18 September 1963	Rayne 6 N, US	daily rain	128.8 mm (5.1 in)	113.8 mm (4.5 in)	4 years	48 of 100 (Notable)
18 September 1963	Horseshoe, AU	daily rain	25.1 mm (1.0 in)	16.2 mm (0.6 in)	20 years	47 of 100 (Notable)
18 September 1963	Daly River Police, AU	daily rain	30.5 mm (1.2 in)	30.5 mm (1.2 in)	50 years	47 of 100 (Notable)
18 September 1963	Big Bear Lake Dam, US	daily rain	62.0 mm (2.4 in)	54.4 mm (2.1 in)	24 years	47 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

1803 to 1963

Records set or tied on this calendar date in each year from 1803 to 1963. 1963 had 453 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 1963-09-18: 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).

Margin	Records
0 to 20	348
20 to 40	35
40 to 60	5
60 to 80	1
80 to 100	2
100 to 120	2