Weather Records on 20 September 1948

454 weather records were set or tied worldwide on 20 September 1948. Highest significance: Grand Meadow, US.

Key Facts for 20 September 1948

On 20 September 1948, 454 weather records were set or tied at long-record stations worldwide.
204 were record highs and 39 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 0 monthly and 454 daily.
Grand Meadow set a daily record precipitation of 91.4 mm (3.6 in) on 20 September 1948.
Across 156 earlier years (1812 to 2026) the same calendar date averaged 442 records.

Record Map

454 stations

454 station records on 20 September 1948 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 September 1948: highest significance records shown on the map
Station	Country	Type	Value	Significance
Grand Meadow	United States	Record daily precipitation	91.4 mm (3.6 in)	55 of 100 (Notable)
Amalapuram	India	Record daily precipitation	102.6 mm (4.0 in)	52 of 100 (Notable)
Karimnagar	India	Record daily precipitation	145.3 mm (5.7 in)	51 of 100 (Notable)
Jackson 3 NW	United States	Record daily precipitation	57.9 mm (2.3 in)	50 of 100 (Notable)
Lancaster 2 NW	United States	Record daily precipitation	82.0 mm (3.2 in)	45 of 100 (Notable)
Waverly	United States	Record daily precipitation	48.0 mm (1.9 in)	45 of 100 (Notable)
Belleville Dam 2O	United States	Record daily precipitation	71.1 mm (2.8 in)	45 of 100 (Notable)
Port Blair	India	Record daily precipitation	146.3 mm (5.8 in)	44 of 100 (Notable)
Centerville	United States	Record daily precipitation	59.2 mm (2.3 in)	42 of 100 (Notable)
St Peter	United States	Record daily precipitation	72.4 mm (2.9 in)	41 of 100 (Notable)
Wheatland 4N	United States	Record daily precipitation	31.8 mm (1.3 in)	40 of 100 (Notable)
Weston	United States	Record daily precipitation	49.8 mm (2.0 in)	39 of 100 (Notable)
Haiku 490	United States	Record low minimum temperature	15.6 C (60.1 F)	38 of 100 (Notable)
Umerkhed	India	Record daily precipitation	58.9 mm (2.3 in)	36 of 100 (Notable)
Bergplaats	South Africa	Record daily precipitation	35.6 mm (1.4 in)	36 of 100 (Notable)
Dwaleni	Swaziland	Record daily precipitation	45.7 mm (1.8 in)	33 of 100 (Routine)
Moorland (Denro-An)	Australia	Record daily precipitation	63.5 mm (2.5 in)	32 of 100 (Routine)
O'Neill	United States	Record daily precipitation	35.8 mm (1.4 in)	32 of 100 (Routine)
Pandherikawara	India	Record daily precipitation	72.4 mm (2.9 in)	31 of 100 (Routine)
Elkader 6 SSW	United States	Record daily precipitation	33.5 mm (1.3 in)	31 of 100 (Routine)
Lottering (Bos)	South Africa	Record daily precipitation	65.0 mm (2.6 in)	30 of 100 (Routine)
Oestersund-Froesoen	Sweden	Record low minimum temperature	-3.0 C (26.6 F)	30 of 100 (Routine)
Britton	United States	Record daily precipitation	27.4 mm (1.1 in)	30 of 100 (Routine)
Mankayane	Swaziland	Record daily precipitation	42.2 mm (1.7 in)	30 of 100 (Routine)
Springfield Elmwood Av	United States	Record daily precipitation	47.5 mm (1.9 in)	29 of 100 (Routine)
New Hampton	United States	Record daily precipitation	53.1 mm (2.1 in)	28 of 100 (Routine)
Stroud Post Office	Australia	Record daily precipitation	43.9 mm (1.7 in)	27 of 100 (Routine)
Rietpoort	South Africa	Record daily precipitation	33.5 mm (1.3 in)	27 of 100 (Routine)
Danville	United States	Record daily precipitation	54.1 mm (2.1 in)	27 of 100 (Routine)
Huntington	United States	Record daily precipitation	30.5 mm (1.2 in)	27 of 100 (Routine)
Nizamabad	India	Record daily precipitation	70.4 mm (2.8 in)	26 of 100 (Routine)
Sheffield	United Kingdom	Record low maximum temperature	11.1 C (52.0 F)	26 of 100 (Routine)
Williamsburg 1E	United States	Record daily precipitation	40.1 mm (1.6 in)	26 of 100 (Routine)
Nongoma	South Africa	Record daily precipitation	37.3 mm (1.5 in)	25 of 100 (Routine)
Iowa City	United States	Record daily precipitation	46.5 mm (1.8 in)	25 of 100 (Routine)
Brunswick Junction	Australia	Record daily precipitation	26.7 mm (1.1 in)	24 of 100 (Routine)
Syktyvkar	Russia	Record high minimum temperature	12.2 C (54.0 F)	24 of 100 (Routine)
Great Brak River	South Africa	Record daily precipitation	44.7 mm (1.8 in)	24 of 100 (Routine)
Bjuraker	Sweden	Record low maximum temperature	6.0 C (42.8 F)	24 of 100 (Routine)
Buxton	United Kingdom	Record low maximum temperature	9.4 C (48.9 F)	24 of 100 (Routine)
Farmersburg	United States	Record daily precipitation	28.2 mm (1.1 in)	24 of 100 (Routine)
Ottumwa 1 WSW	United States	Record daily precipitation	58.7 mm (2.3 in)	24 of 100 (Routine)
Coloso	Puerto Rico [United States]	Record high minimum temperature	22.2 C (72.0 F)	23 of 100 (Routine)
Ust Tzilma	Russia	Record high minimum temperature	10.0 C (50.0 F)	23 of 100 (Routine)
Troicko-Pecherskoe	Russia	Record high minimum temperature	10.6 C (51.1 F)	23 of 100 (Routine)
Verkykerskop (Pol)	South Africa	Record daily precipitation	32.5 mm (1.3 in)	23 of 100 (Routine)
Crawfordsville Pwr Plt	United States	Record daily precipitation	28.2 mm (1.1 in)	23 of 100 (Routine)
Horton	United States	Record high maximum temperature	33.9 C (93.0 F)	23 of 100 (Routine)
Bidar	India	Record daily precipitation	91.4 mm (3.6 in)	22 of 100 (Routine)
Sunticoppa	India	Record daily precipitation	34.3 mm (1.4 in)	22 of 100 (Routine)
Chandrapur	India	Record daily precipitation	57.7 mm (2.3 in)	22 of 100 (Routine)
Kanin Nos	Russia	Record high maximum temperature	15.0 C (59.0 F)	22 of 100 (Routine)
Sveg	Sweden	Record low maximum temperature	4.8 C (40.6 F)	22 of 100 (Routine)
Setauket Strong	United States	Record high maximum temperature	28.9 C (84.0 F)	22 of 100 (Routine)
Mt Healthy Exp Farm	United States	Record daily precipitation	53.3 mm (2.1 in)	22 of 100 (Routine)
Beckley Va Hospital	United States	Record daily precipitation	28.4 mm (1.1 in)	22 of 100 (Routine)
Cape Leeuwin	Australia	Record low minimum temperature	4.4 C (39.9 F)	21 of 100 (Routine)
Warora	India	Record daily precipitation	33.0 mm (1.3 in)	21 of 100 (Routine)
Cherdyn'	Russia	Record high minimum temperature	13.1 C (55.6 F)	21 of 100 (Routine)
Greenfield	United States	Record daily precipitation	27.9 mm (1.1 in)	21 of 100 (Routine)

Counts by Type and Timescale

454 records

Records set or tied on 20 September 1948 by type: Highest daily maximum 85, Lowest daily maximum 29, Highest daily minimum 119, Lowest daily minimum 10, Heaviest daily rainfall 211.

Records on 20 September 1948 by type
Record type	Records
Highest daily maximum	85
Lowest daily maximum	29
Highest daily minimum	119
Lowest daily minimum	10
Heaviest daily rainfall	211
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 20 September 1948 by timescale: all-time 0, monthly 0, daily 454.

How Much Records Were Beaten By

353 broken records

Margins by which the 353 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 104.9. Ties are not counted.

Top 20 by Significance

20 September 1948

Top 20 records on 20 September 1948 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 September 1948	Grand Meadow, US	daily rain	91.4 mm (3.6 in)	50.8 mm (2.0 in)	52 years	55 of 100 (Notable)
20 September 1948	Amalapuram, IN	daily rain	102.6 mm (4.0 in)	72.9 mm (2.9 in)	32 years	52 of 100 (Notable)
20 September 1948	Karimnagar, IN	daily rain	145.3 mm (5.7 in)	104.9 mm (4.1 in)	26 years	51 of 100 (Notable)
20 September 1948	Jackson 3 NW, US	daily rain	57.9 mm (2.3 in)	43.2 mm (1.7 in)	26 years	50 of 100 (Notable)
20 September 1948	Lancaster 2 NW, US	daily rain	82.0 mm (3.2 in)	57.4 mm (2.3 in)	3 years	45 of 100 (Notable)
20 September 1948	Waverly, US	daily rain	48.0 mm (1.9 in)	28.4 mm (1.1 in)	43 years	45 of 100 (Notable)
20 September 1948	Belleville Dam 2O, US	daily rain	71.1 mm (2.8 in)	40.1 mm (1.6 in)	20 years	45 of 100 (Notable)
20 September 1948	Port Blair, IN	daily rain	146.3 mm (5.8 in)	71.4 mm (2.8 in)	30 years	44 of 100 (Notable)
20 September 1948	Centerville, US	daily rain	59.2 mm (2.3 in)	36.3 mm (1.4 in)	54 years	42 of 100 (Notable)
20 September 1948	St Peter, US	daily rain	72.4 mm (2.9 in)	41.9 mm (1.6 in)	41 years	41 of 100 (Notable)
20 September 1948	Wheatland 4N, US	daily rain	31.8 mm (1.3 in)	27.7 mm (1.1 in)	14 years	40 of 100 (Notable)
20 September 1948	Weston, US	daily rain	49.8 mm (2.0 in)	24.4 mm (1.0 in)	44 years	39 of 100 (Notable)
20 September 1948	Haiku 490, US	daily low min	15.6 C (60.1 F)	2.7 C (4.9 F)	42 years	38 of 100 (Notable)
20 September 1948	Umerkhed, IN	daily rain	58.9 mm (2.3 in)	39.6 mm (1.6 in)	40 years	36 of 100 (Notable)
20 September 1948	Bergplaats, ZA	daily rain	35.6 mm (1.4 in)	19.1 mm (0.8 in)	42 years	36 of 100 (Notable)
20 September 1948	Dwaleni, SZ	daily rain	45.7 mm (1.8 in)	29.4 mm (1.2 in)	4 years	33 of 100 (Routine)
20 September 1948	Moorland (Denro-An), AU	daily rain	63.5 mm (2.5 in)	17.8 mm (0.7 in)	58 years	32 of 100 (Routine)
20 September 1948	O'Neill, US	daily rain	35.8 mm (1.4 in)	26.7 mm (1.1 in)	25 years	32 of 100 (Routine)
20 September 1948	Pandherikawara, IN	daily rain	72.4 mm (2.9 in)	54.1 mm (2.1 in)	13 years	31 of 100 (Routine)
20 September 1948	Elkader 6 SSW, US	daily rain	33.5 mm (1.3 in)	20.3 mm (0.8 in)	37 years	31 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

1812 to 1948

Records set or tied on this calendar date in each year from 1812 to 1948. 1948 had 454 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 1948-09-20: 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 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Margin	Records
0 to 20	323
20 to 40	21
40 to 60	6
60 to 80	2
80 to 100	0
100 to 120	1