Weather Records on 20 September 1955

625 weather records were set or tied worldwide on 20 September 1955. Highest significance: Harrison, US.

Key Facts for 20 September 1955

On 20 September 1955, 625 weather records were set or tied at long-record stations worldwide.
189 were record highs and 77 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 36 monthly and 589 daily.
Harrison set a monthly record daily precipitation of 70.4 mm (2.8 in) on 20 September 1955.
Across 156 earlier years (1812 to 2026) the same calendar date averaged 441 records.

Record Map

625 stations

625 station records on 20 September 1955 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 September 1955: highest significance records shown on the map
Station	Country	Type	Value	Significance
Harrison	United States	Record daily precipitation	70.4 mm (2.8 in)	64 of 100 (Major)
Atley	Australia	Record daily precipitation	28.2 mm (1.1 in)	62 of 100 (Major)
Youanmi Downs	Australia	Record daily precipitation	54.6 mm (2.1 in)	61 of 100 (Major)
Yuinmery	Australia	Record daily precipitation	63.2 mm (2.5 in)	61 of 100 (Major)
Frome Downs	Australia	Record daily precipitation	30.5 mm (1.2 in)	60 of 100 (Major)
Gnowangerup	Australia	Record daily precipitation	49.3 mm (1.9 in)	57 of 100 (Notable)
Chinocup	Australia	Record daily precipitation	66.0 mm (2.6 in)	56 of 100 (Notable)
Gorki	Belarus	Record daily precipitation	31.9 mm (1.3 in)	56 of 100 (Notable)
Pierson	Canada	Record daily precipitation	32.0 mm (1.3 in)	56 of 100 (Notable)
Chirelillup	Australia	Record daily precipitation	61.0 mm (2.4 in)	55 of 100 (Notable)
Menzies	Australia	Record daily precipitation	50.8 mm (2.0 in)	55 of 100 (Notable)
Haliyal	India	Record daily precipitation	81.8 mm (3.2 in)	55 of 100 (Notable)
Coolgardie Post Office	Australia	Record daily precipitation	27.9 mm (1.1 in)	54 of 100 (Notable)
Kookynie	Australia	Record daily precipitation	27.9 mm (1.1 in)	54 of 100 (Notable)
Widgiemooltha	Australia	Record daily precipitation	26.2 mm (1.0 in)	54 of 100 (Notable)
Junqueiro	Brazil	Record daily precipitation	41.5 mm (1.6 in)	54 of 100 (Notable)
Katanning Comparison	Australia	Record daily precipitation	25.4 mm (1.0 in)	53 of 100 (Notable)
Woodanilling	Australia	Record daily precipitation	26.9 mm (1.1 in)	52 of 100 (Notable)
Leonora	Australia	Record daily precipitation	31.8 mm (1.3 in)	52 of 100 (Notable)
Ora Banda	Australia	Record daily precipitation	26.7 mm (1.1 in)	52 of 100 (Notable)
Yeotmal	India	Record daily precipitation	131.3 mm (5.2 in)	52 of 100 (Notable)
Cullculli	Australia	Record daily precipitation	29.7 mm (1.2 in)	50 of 100 (Notable)
Lincoln UNIV Pwr Plt	United States	Record daily precipitation	66.3 mm (2.6 in)	50 of 100 (Notable)
Bulong	Australia	Record daily precipitation	28.4 mm (1.1 in)	49 of 100 (Notable)
Zanthus	Australia	Record daily precipitation	38.1 mm (1.5 in)	48 of 100 (Notable)
Elizabethtown	United States	Record daily precipitation	106.7 mm (4.2 in)	48 of 100 (Notable)
Tuckanarra	Australia	Record daily precipitation	25.9 mm (1.0 in)	46 of 100 (Notable)
Ranfurly	Canada	Record daily precipitation	26.4 mm (1.0 in)	46 of 100 (Notable)
Causapscal	Canada	Record daily precipitation	56.4 mm (2.2 in)	46 of 100 (Notable)
Oak Park	Australia	Record daily precipitation	32.3 mm (1.3 in)	45 of 100 (Notable)
Hot Springs	United States	Record daily precipitation	45.0 mm (1.8 in)	45 of 100 (Notable)
Sao Miguel Dos Campos	Brazil	Record daily precipitation	58.3 mm (2.3 in)	44 of 100 (Notable)
Kalghatgi	India	Record daily precipitation	52.8 mm (2.1 in)	44 of 100 (Notable)
Merriman	United States	Record daily precipitation	38.9 mm (1.5 in)	44 of 100 (Notable)
Murdo	United States	Record daily precipitation	43.9 mm (1.7 in)	44 of 100 (Notable)
Chamingup	Australia	Record daily precipitation	27.2 mm (1.1 in)	43 of 100 (Notable)
Ashland	United States	Record daily precipitation	53.3 mm (2.1 in)	43 of 100 (Notable)
Tambellup	Australia	Record daily precipitation	33.8 mm (1.3 in)	42 of 100 (Notable)
Calgary Int'l A	Canada	Record daily snowfall	11.2 cm (4.4 in)	42 of 100 (Notable)
Kimball 2NE	United States	Record daily precipitation	39.6 mm (1.6 in)	42 of 100 (Notable)
Hermosa 3 SSW	United States	Record daily precipitation	41.1 mm (1.6 in)	42 of 100 (Notable)
Springview 2NW	United States	Record daily precipitation	58.4 mm (2.3 in)	40 of 100 (Notable)
Lyndon	Canada	Record daily snowfall	11.4 cm (4.5 in)	39 of 100 (Notable)
Pocomoke City	United States	Record daily precipitation	39.4 mm (1.6 in)	39 of 100 (Notable)
Lynch	United States	Record daily precipitation	62.7 mm (2.5 in)	39 of 100 (Notable)
Broomehill	Australia	Record daily precipitation	27.4 mm (1.1 in)	38 of 100 (Notable)
Japaratuba	Brazil	Record daily precipitation	60.8 mm (2.4 in)	38 of 100 (Notable)
Vulcan	Canada	Record daily snowfall	12.7 cm (5.0 in)	38 of 100 (Notable)
Pembroke Eddy Match	Canada	Record high maximum temperature	31.1 C (88.0 F)	38 of 100 (Notable)
Nukarni	Australia	Record daily precipitation	25.9 mm (1.0 in)	37 of 100 (Notable)
Parrsboro	Canada	Record daily precipitation	64.8 mm (2.6 in)	37 of 100 (Notable)
Pukwana 3 W	United States	Record daily precipitation	32.0 mm (1.3 in)	37 of 100 (Notable)
Dandaraga	Australia	Record daily precipitation	28.2 mm (1.1 in)	36 of 100 (Notable)
Gordon 6N	United States	Record daily precipitation	46.2 mm (1.8 in)	36 of 100 (Notable)
High River	Canada	Record daily snowfall	10.2 cm (4.0 in)	35 of 100 (Notable)
Pekisko	Canada	Record daily snowfall	10.2 cm (4.0 in)	35 of 100 (Notable)
Sable Island	Canada	Record daily precipitation	56.6 mm (2.2 in)	35 of 100 (Notable)
Newport News Press Bld	United States	Record daily precipitation	51.1 mm (2.0 in)	35 of 100 (Notable)
Cap Chat	Canada	Record daily precipitation	32.3 mm (1.3 in)	34 of 100 (Routine)
Cap Madeleine	Canada	Record daily precipitation	37.3 mm (1.5 in)	34 of 100 (Routine)

Counts by Type and Timescale

625 records

Records set or tied on 20 September 1955 by type: Highest daily maximum 82, Lowest daily maximum 36, Highest daily minimum 107, Lowest daily minimum 41, Heaviest daily rainfall 342, Heaviest daily snowfall 17.

Records on 20 September 1955 by type
Record type	Records
Highest daily maximum	82
Lowest daily maximum	36
Highest daily minimum	107
Lowest daily minimum	41
Heaviest daily rainfall	342
Heaviest daily snowfall	17
Deepest snow cover	0

Records on 20 September 1955 by timescale: all-time 0, monthly 36, daily 589.

How Much Records Were Beaten By

527 broken records

Margins by which the 527 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 127.0. Ties are not counted.

Top 20 by Significance

20 September 1955

Top 20 records on 20 September 1955 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 September 1955	Harrison, US	monthly rain	70.4 mm (2.8 in)	27.7 mm (1.1 in)	31 years	64 of 100 (Major)
20 September 1955	Atley, AU	monthly rain	28.2 mm (1.1 in)	18.0 mm (0.7 in)	31 years	62 of 100 (Major)
20 September 1955	Youanmi Downs, AU	monthly rain	54.6 mm (2.1 in)	32.8 mm (1.3 in)	28 years	61 of 100 (Major)
20 September 1955	Yuinmery, AU	monthly rain	63.2 mm (2.5 in)	40.3 mm (1.6 in)	28 years	61 of 100 (Major)
20 September 1955	Frome Downs, AU	daily rain	30.5 mm (1.2 in)	30.5 mm (1.2 in)	64 years	60 of 100 (Major)
20 September 1955	Gnowangerup, AU	monthly rain	49.3 mm (1.9 in)	16.5 mm (0.6 in)	26 years	57 of 100 (Notable)
20 September 1955	Chinocup, AU	monthly rain	66.0 mm (2.6 in)	24.3 mm (1.0 in)	6 years	56 of 100 (Notable)
20 September 1955	Gorki, BY	daily rain	31.9 mm (1.3 in)	15.0 mm (0.6 in)	73 years	56 of 100 (Notable)
20 September 1955	Pierson, CA	daily rain	32.0 mm (1.3 in)	28.2 mm (1.1 in)	38 years	56 of 100 (Notable)
20 September 1955	Chirelillup, AU	monthly rain	61.0 mm (2.4 in)	29.2 mm (1.1 in)	4 years	55 of 100 (Notable)
20 September 1955	Menzies, AU	monthly rain	50.8 mm (2.0 in)	33.0 mm (1.3 in)	1 year	55 of 100 (Notable)
20 September 1955	Haliyal, IN	daily rain	81.8 mm (3.2 in)	58.2 mm (2.3 in)	34 years	55 of 100 (Notable)
20 September 1955	Coolgardie Post Office, AU	daily rain	27.9 mm (1.1 in)	26.1 mm (1.0 in)	28 years	54 of 100 (Notable)
20 September 1955	Kookynie, AU	daily rain	27.9 mm (1.1 in)	19.0 mm (0.7 in)	44 years	54 of 100 (Notable)
20 September 1955	Widgiemooltha, AU	daily rain	26.2 mm (1.0 in)	23.2 mm (0.9 in)	32 years	54 of 100 (Notable)
20 September 1955	Junqueiro, BR	daily rain	41.5 mm (1.6 in)	24.9 mm (1.0 in)	34 years	54 of 100 (Notable)
20 September 1955	Katanning Comparison, AU	daily rain	25.4 mm (1.0 in)	13.7 mm (0.5 in)	48 years	53 of 100 (Notable)
20 September 1955	Woodanilling, AU	daily rain	26.9 mm (1.1 in)	21.3 mm (0.8 in)	28 years	52 of 100 (Notable)
20 September 1955	Leonora, AU	monthly rain	31.8 mm (1.3 in)	13.5 mm (0.5 in)	1 year	52 of 100 (Notable)
20 September 1955	Ora Banda, AU	daily rain	26.7 mm (1.1 in)	24.7 mm (1.0 in)	28 years	52 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

1812 to 1955

Records set or tied on this calendar date in each year from 1812 to 1955. 1955 had 625 records.

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

Records on 09-20 in each year
Year	Records
1812	1
1837	1
1840	1
1844	1
1848	2
1851	1
1852	1
1854	2
1855	1
1856	2
1859	2
1860	1
1862	1
1870	1
1871	2
1882	2
1883	1
1884	1
1886	2
1887	1
1888	2
1889	8
1891	4
1893	5
1894	1
1895	2
1896	1
1897	16
1898	4
1899	1
1900	2
1901	3
1902	3
1903	3
1904	12
1905	8
1906	22
1907	11
1908	24
1909	10
1910	8
1911	21
1912	34
1913	48
1914	28
1915	239
1916	28
1917	100
1918	59
1919	55
1920	64
1921	40
1922	52
1923	249
1924	329
1925	330
1926	129
1927	169
1928	144
1929	373
1930	102
1931	564
1932	270
1933	223
1934	349
1935	201
1936	133
1937	385
1938	506
1939	312
1940	591
1941	582
1942	436
1943	419
1944	466
1945	406
1946	766
1947	460
1948	454
1949	268
1950	435
1951	267
1952	434
1953	479
1954	628
1955	625
1956	985
1957	514
1958	410
1959	489
1960	352
1961	384
1962	707
1963	290
1964	482
1965	1,180
1966	414
1967	449
1968	617
1969	604
1970	591
1971	884
1972	582
1973	569
1974	771
1975	527
1976	375
1977	776
1978	1,216
1979	767
1980	567
1981	979
1982	911
1983	1,958
1984	895
1985	730
1986	743
1987	856
1988	698
1989	968
1990	743
1991	1,835
1992	718
1993	1,031
1994	788
1995	1,374
1996	1,077
1997	1,282
1998	1,157
1999	923
2000	908
2001	821
2002	845
2003	910
2004	1,156
2005	960
2006	732
2007	645
2008	648
2009	715
2010	1,497
2011	650
2012	549
2013	595
2014	577
2015	439
2016	778
2017	920
2018	1,020
2019	835
2020	630
2021	565
2022	786
2023	482
2024	596
2025	877
2026	682

Download the Data

Data for records on 1955-09-20: 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	465
20 to 40	44
40 to 60	7
60 to 80	3
80 to 100	4
100 to 120	3
120 to 140	1