Weather Records on 18 September 1951

320 weather records were set or tied worldwide on 18 September 1951. Highest significance: Illalangi, AU.

Key Facts for 18 September 1951

On 18 September 1951, 320 weather records were set or tied at long-record stations worldwide.
95 were record highs and 123 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 6 monthly and 314 daily.
Illalangi set a monthly record daily precipitation of 86.6 mm (3.4 in) on 18 September 1951.
Across 163 earlier years (1803 to 2026) the same calendar date averaged 422 records.

Record Map

320 stations

320 station records on 18 September 1951 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 18 September 1951: highest significance records shown on the map
Station	Country	Type	Value	Significance
Illalangi	Australia	Record daily precipitation	86.6 mm (3.4 in)	61 of 100 (Major)
Wattlegrove	Australia	Record daily precipitation	102.1 mm (4.0 in)	61 of 100 (Major)
Amelup	Australia	Record daily precipitation	35.1 mm (1.4 in)	54 of 100 (Notable)
Warriup	Australia	Record daily precipitation	41.9 mm (1.6 in)	51 of 100 (Notable)
Albany	Australia	Record daily precipitation	56.4 mm (2.2 in)	49 of 100 (Notable)
Bodinayakkanur	India	Record daily precipitation	45.2 mm (1.8 in)	47 of 100 (Notable)
Grassmere	Australia	Record daily precipitation	61.7 mm (2.4 in)	45 of 100 (Notable)
Kalgan River	Australia	Record daily precipitation	38.1 mm (1.5 in)	43 of 100 (Notable)
Huehue 92.1	United States	Record daily precipitation	55.4 mm (2.2 in)	43 of 100 (Notable)
Goalpara	India	Record daily precipitation	144.3 mm (5.7 in)	39 of 100 (Notable)
Musiri	India	Record daily precipitation	74.9 mm (2.9 in)	38 of 100 (Notable)
Arundel	Australia	Record daily precipitation	25.1 mm (1.0 in)	37 of 100 (Notable)
Rangia	India	Record daily precipitation	62.7 mm (2.5 in)	37 of 100 (Notable)
Youngs Siding	Australia	Record daily precipitation	32.5 mm (1.3 in)	36 of 100 (Notable)
Chidavaram	India	Record daily precipitation	82.6 mm (3.3 in)	36 of 100 (Notable)
Patacharkuchi	India	Record daily precipitation	99.1 mm (3.9 in)	36 of 100 (Notable)
Westbourne	Australia	Record daily precipitation	26.4 mm (1.0 in)	35 of 100 (Notable)
Cape Leeuwin	Australia	Record daily precipitation	35.8 mm (1.4 in)	33 of 100 (Routine)
Tiruppuvanam	India	Record daily precipitation	78.7 mm (3.1 in)	32 of 100 (Routine)
Quanah 2 SW	United States	Record low minimum temperature	6.1 C (43.0 F)	32 of 100 (Routine)
Deeside	Australia	Record daily precipitation	36.1 mm (1.4 in)	31 of 100 (Routine)
Kerkeriya	India	Record daily precipitation	95.0 mm (3.7 in)	31 of 100 (Routine)
Ocala	United States	Record daily precipitation	67.1 mm (2.6 in)	30 of 100 (Routine)
Roswell Muni AP	United States	Record low minimum temperature	5.6 C (42.1 F)	30 of 100 (Routine)
Kulithalai	India	Record daily precipitation	65.3 mm (2.6 in)	29 of 100 (Routine)
Lake Muir	Australia	Record daily precipitation	45.2 mm (1.8 in)	28 of 100 (Routine)
Tasiilaq	Greenland [Denmark]	Record high minimum temperature	7.5 C (45.5 F)	28 of 100 (Routine)
Charduar	India	Record daily precipitation	111.3 mm (4.4 in)	27 of 100 (Routine)
Narasimharajapura	India	Record daily precipitation	36.1 mm (1.4 in)	26 of 100 (Routine)
Kamuthi	India	Record daily precipitation	26.2 mm (1.0 in)	26 of 100 (Routine)
Dum Dooma /Sookerating Aab	India	Record daily precipitation	78.7 mm (3.1 in)	25 of 100 (Routine)
Raiford State Prison	United States	Record low maximum temperature	23.9 C (75.0 F)	25 of 100 (Routine)
Carlsbad	United States	Record low minimum temperature	4.4 C (39.9 F)	25 of 100 (Routine)
Hondo	United States	Record low minimum temperature	10.0 C (50.0 F)	25 of 100 (Routine)
Lakhipur	India	Record daily precipitation	117.6 mm (4.6 in)	24 of 100 (Routine)
Arsikere	India	Record daily precipitation	71.1 mm (2.8 in)	24 of 100 (Routine)
Carson City	United States	Record daily precipitation	27.7 mm (1.1 in)	24 of 100 (Routine)
Hana 354	United States	Record low minimum temperature	16.7 C (62.1 F)	24 of 100 (Routine)
Bangalup	Australia	Record daily precipitation	41.9 mm (1.6 in)	23 of 100 (Routine)
Crownpoint	United States	Record high minimum temperature	20.6 C (69.1 F)	23 of 100 (Routine)
Dufur	United States	Record high maximum temperature	35.0 C (95.0 F)	23 of 100 (Routine)
Boerne	United States	Record low minimum temperature	7.2 C (45.0 F)	23 of 100 (Routine)
Nornalup	Australia	Record daily precipitation	92.5 mm (3.6 in)	22 of 100 (Routine)
Troicko-Pecherskoe	Russia	Record high minimum temperature	10.3 C (50.5 F)	22 of 100 (Routine)
Madison	United States	Record daily precipitation	49.0 mm (1.9 in)	22 of 100 (Routine)
Hatch	United States	Record low minimum temperature	6.1 C (43.0 F)	22 of 100 (Routine)
Arlington	United States	Record high maximum temperature	33.3 C (91.9 F)	22 of 100 (Routine)
Soldier Summit	United States	Record high maximum temperature	29.4 C (84.9 F)	22 of 100 (Routine)
Dwtn Charleston	United States	Record low maximum temperature	22.2 C (72.0 F)	22 of 100 (Routine)
Dibrugarh Obsy	India	Record daily precipitation	84.8 mm (3.3 in)	21 of 100 (Routine)
Usilampatti	India	Record daily precipitation	38.9 mm (1.5 in)	21 of 100 (Routine)
Saint Johns	United States	Record high minimum temperature	17.2 C (63.0 F)	21 of 100 (Routine)
Orleans	United States	Record high maximum temperature	40.6 C (105.1 F)	21 of 100 (Routine)
Southern Pines 2 W	United States	Record low maximum temperature	21.1 C (70.0 F)	21 of 100 (Routine)
Junction 4SSW	United States	Record low minimum temperature	3.9 C (39.0 F)	21 of 100 (Routine)
Dyliabing	Australia	Record daily precipitation	23.1 mm (0.9 in)	20 of 100 (Routine)
Lake Grace Comparison	Australia	Record daily precipitation	19.3 mm (0.8 in)	20 of 100 (Routine)
Pallinup	Australia	Record daily precipitation	22.4 mm (0.9 in)	20 of 100 (Routine)
Nanda Downs	Australia	Record daily precipitation	17.8 mm (0.7 in)	20 of 100 (Routine)
Katanning Comparison	Australia	Record daily precipitation	19.8 mm (0.8 in)	20 of 100 (Routine)

Counts by Type and Timescale

320 records

Records set or tied on 18 September 1951 by type: Highest daily maximum 56, Lowest daily maximum 36, Highest daily minimum 39, Lowest daily minimum 87, Heaviest daily rainfall 102.

Records on 18 September 1951 by type
Record type	Records
Highest daily maximum	56
Lowest daily maximum	36
Highest daily minimum	39
Lowest daily minimum	87
Heaviest daily rainfall	102
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 18 September 1951 by timescale: all-time 0, monthly 6, daily 314.

How Much Records Were Beaten By

241 broken records

Margins by which the 241 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 61.7. Ties are not counted.

Top 20 by Significance

18 September 1951

Top 20 records on 18 September 1951 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
18 September 1951	Illalangi, AU	monthly rain	86.6 mm (3.4 in)	33.5 mm (1.3 in)	23 years	61 of 100 (Major)
18 September 1951	Wattlegrove, AU	monthly rain	102.1 mm (4.0 in)	36.1 mm (1.4 in)	23 years	61 of 100 (Major)
18 September 1951	Amelup, AU	daily rain	35.1 mm (1.4 in)	24.2 mm (1.0 in)	36 years	54 of 100 (Notable)
18 September 1951	Warriup, AU	daily rain	41.9 mm (1.6 in)	27.4 mm (1.1 in)	28 years	51 of 100 (Notable)
18 September 1951	Albany, AU	daily rain	56.4 mm (2.2 in)	39.6 mm (1.6 in)	8 years	49 of 100 (Notable)
18 September 1951	Bodinayakkanur, IN	daily rain	45.2 mm (1.8 in)	37.1 mm (1.5 in)	32 years	47 of 100 (Notable)
18 September 1951	Grassmere, AU	daily rain	61.7 mm (2.4 in)	46.2 mm (1.8 in)	5 years	45 of 100 (Notable)
18 September 1951	Kalgan River, AU	daily rain	38.1 mm (1.5 in)	20.8 mm (0.8 in)	20 years	43 of 100 (Notable)
18 September 1951	Huehue 92.1, US	daily rain	55.4 mm (2.2 in)	42.4 mm (1.7 in)	36 years	43 of 100 (Notable)
18 September 1951	Goalpara, IN	daily rain	144.3 mm (5.7 in)	61.7 mm (2.4 in)	36 years	39 of 100 (Notable)
18 September 1951	Musiri, IN	daily rain	74.9 mm (2.9 in)	39.3 mm (1.5 in)	44 years	38 of 100 (Notable)
18 September 1951	Arundel, AU	daily rain	25.1 mm (1.0 in)	14.9 mm (0.6 in)	8 years	37 of 100 (Notable)
18 September 1951	Rangia, IN	daily rain	62.7 mm (2.5 in)	42.4 mm (1.7 in)	30 years	37 of 100 (Notable)
18 September 1951	Youngs Siding, AU	daily rain	32.5 mm (1.3 in)	18.3 mm (0.7 in)	8 years	36 of 100 (Notable)
18 September 1951	Chidavaram, IN	daily rain	82.6 mm (3.3 in)	41.5 mm (1.6 in)	38 years	36 of 100 (Notable)
18 September 1951	Patacharkuchi, IN	daily rain	99.1 mm (3.9 in)	57.7 mm (2.3 in)	32 years	36 of 100 (Notable)
18 September 1951	Westbourne, AU	daily rain	26.4 mm (1.0 in)	12.2 mm (0.5 in)	36 years	35 of 100 (Notable)
18 September 1951	Cape Leeuwin, AU	daily rain	35.8 mm (1.4 in)	12.9 mm (0.5 in)	26 years	33 of 100 (Routine)
18 September 1951	Tiruppuvanam, IN	daily rain	78.7 mm (3.1 in)	44.9 mm (1.8 in)	21 years	32 of 100 (Routine)
18 September 1951	Quanah 2 SW, US	daily low min	6.1 C (43.0 F)	6.7 C (12.1 F)	42 years	32 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 1951

Records set or tied on this calendar date in each year from 1803 to 1951. 1951 had 320 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 1951-09-18: 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 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Margin	Records
0 to 10	198
10 to 20	20
20 to 30	8
30 to 40	8
40 to 50	5
50 to 60	1
60 to 70	1