Weather Records on 20 September 2003

910 weather records were set or tied worldwide on 20 September 2003. Highest significance: Raymondville, US.

Key Facts for 20 September 2003

On 20 September 2003, 910 weather records were set or tied at long-record stations worldwide.
585 were record highs and 171 were record lows, counting maximum and minimum temperature.
By timescale, 3 were all-time records, 34 monthly and 873 daily.
Raymondville set a daily record precipitation of 91.7 mm (3.6 in) on 20 September 2003.
Across 156 earlier years (1812 to 2026) the same calendar date averaged 439 records.

Record Map

910 stations

910 station records on 20 September 2003 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 20 September 2003: highest significance records shown on the map
Station	Country	Type	Value	Significance
Raymondville	United States	Record daily precipitation	91.7 mm (3.6 in)	60 of 100 (Major)
San Rafael	Mexico	Record daily precipitation	64.8 mm (2.6 in)	59 of 100 (Notable)
San Bartolo	Mexico	Record daily precipitation	59.9 mm (2.4 in)	54 of 100 (Notable)
Storsteinnes I Balsfjord	Norway	Record daily precipitation	45.5 mm (1.8 in)	54 of 100 (Notable)
Caduao	Mexico	Record daily precipitation	305.8 mm (12.0 in)	52 of 100 (Notable)
El Pueblito	Mexico	Record daily precipitation	72.1 mm (2.8 in)	52 of 100 (Notable)
El Saltito	Mexico	Record daily precipitation	75.7 mm (3.0 in)	49 of 100 (Notable)
Grafton	United States	Record daily precipitation	41.9 mm (1.6 in)	49 of 100 (Notable)
Simon Bolivar	Mexico	Record daily precipitation	79.8 mm (3.1 in)	48 of 100 (Notable)
Sombrerete (Dge)	Mexico	Record daily precipitation	48.3 mm (1.9 in)	47 of 100 (Notable)
Ft Grant	United States	Record high maximum temperature	37.2 C (99.0 F)	47 of 100 (Notable)
Storrs	United States	Record high minimum temperature	20.0 C (68.0 F)	45 of 100 (Notable)
San Francisco del Mezquital	Mexico	Record daily precipitation	54.4 mm (2.1 in)	44 of 100 (Notable)
Grafton	United States	Record high minimum temperature	18.3 C (64.9 F)	44 of 100 (Notable)
Saint Johnsbury	United States	Record high minimum temperature	18.3 C (64.9 F)	43 of 100 (Notable)
Cuatro Cienegas (Smn)	Mexico	Record daily precipitation	46.0 mm (1.8 in)	40 of 100 (Notable)
Nurnberg	Germany	Record high maximum temperature	30.5 C (86.9 F)	39 of 100 (Notable)
Huntington Lake	United States	Record high minimum temperature	17.2 C (63.0 F)	39 of 100 (Notable)
Klamath	United States	Record low minimum temperature	-1.1 C (30.0 F)	39 of 100 (Notable)
Bajio de Ahuichila	Mexico	Record daily precipitation	32.8 mm (1.3 in)	38 of 100 (Notable)
Centro Experimental W-75	Mexico	Record low minimum temperature	16.7 C (62.1 F)	38 of 100 (Notable)
Zunyi	China	Record daily precipitation	91.8 mm (3.6 in)	37 of 100 (Notable)
J. Salome Acosta	Mexico	Record daily precipitation	27.7 mm (1.1 in)	37 of 100 (Notable)
Aachen	Germany	Record high maximum temperature	32.2 C (90.0 F)	36 of 100 (Notable)
Santo Domingo	Mexico	Record low minimum temperature	8.9 C (48.0 F)	36 of 100 (Notable)
Santa Clara	Mexico	Record daily precipitation	50.8 mm (2.0 in)	36 of 100 (Notable)
Mazapil	Mexico	Record daily precipitation	67.6 mm (2.7 in)	36 of 100 (Notable)
Wien	Austria	Record high maximum temperature	29.4 C (84.9 F)	35 of 100 (Notable)
Uccle	Belgium	Record high maximum temperature	29.9 C (85.8 F)	35 of 100 (Notable)
Presa Santa Elena	Mexico	Record daily precipitation	59.9 mm (2.4 in)	35 of 100 (Notable)
El Platanito	Mexico	Record daily precipitation	47.5 mm (1.9 in)	35 of 100 (Notable)
Santa Rosa	Mexico	Record low maximum temperature	17.2 C (63.0 F)	35 of 100 (Notable)
Gunflint Lake 10 NW	United States	Record daily precipitation	31.2 mm (1.2 in)	35 of 100 (Notable)
Abbeville	France	Record high maximum temperature	29.9 C (85.8 F)	34 of 100 (Routine)
Mitzic	Gabon	Record daily precipitation	57.9 mm (2.3 in)	34 of 100 (Routine)
Cinco de Mayo	Mexico	Record daily precipitation	59.9 mm (2.4 in)	34 of 100 (Routine)
Cuencame	Mexico	Record daily precipitation	48.8 mm (1.9 in)	34 of 100 (Routine)
El Pueblito	Mexico	Record low maximum temperature	15.0 C (59.0 F)	34 of 100 (Routine)
Canatlan (Dge)	Mexico	Record daily precipitation	62.0 mm (2.4 in)	34 of 100 (Routine)
Ixpalino	Mexico	Record daily precipitation	72.9 mm (2.9 in)	34 of 100 (Routine)
Playa Vicente	Mexico	Record low minimum temperature	17.2 C (63.0 F)	34 of 100 (Routine)
Jimenez del Teul	Mexico	Record daily precipitation	53.6 mm (2.1 in)	34 of 100 (Routine)
Zacatecas (Dge)	Mexico	Record daily precipitation	43.9 mm (1.7 in)	34 of 100 (Routine)
San Antonio Las Alazanas (Smn	Mexico	Record daily precipitation	45.0 mm (1.8 in)	33 of 100 (Routine)
San Andres Lagunas	Mexico	Record high maximum temperature	35.0 C (95.0 F)	33 of 100 (Routine)
Dimas	Mexico	Record low maximum temperature	25.6 C (78.1 F)	33 of 100 (Routine)
Juan Aldama	Mexico	Record low maximum temperature	16.7 C (62.1 F)	33 of 100 (Routine)
Maastricht	Netherlands	Record high maximum temperature	31.2 C (88.2 F)	33 of 100 (Routine)
Manuel Avila Camacho	Mexico	Record low maximum temperature	24.4 C (75.9 F)	32 of 100 (Routine)
Finca Hamburgo	Mexico	Record high maximum temperature	33.9 C (93.0 F)	32 of 100 (Routine)
San Marcos	Mexico	Record daily precipitation	42.9 mm (1.7 in)	32 of 100 (Routine)
San Diego Curupatzeo	Mexico	Record low minimum temperature	11.7 C (53.1 F)	32 of 100 (Routine)
San Gil	Mexico	Record daily precipitation	25.9 mm (1.0 in)	32 of 100 (Routine)
West Souburg	Netherlands	Record high maximum temperature	25.7 C (78.3 F)	32 of 100 (Routine)
Tromso	Norway	Record daily precipitation	33.1 mm (1.3 in)	32 of 100 (Routine)
Norris Madison Pwr House	United States	Record high minimum temperature	15.0 C (59.0 F)	32 of 100 (Routine)
Milan	Italy	Record high maximum temperature	32.5 C (90.5 F)	31 of 100 (Routine)
Caopas	Mexico	Record daily precipitation	44.2 mm (1.7 in)	31 of 100 (Routine)
Concepcion de la Norma	Mexico	Record daily precipitation	39.9 mm (1.6 in)	31 of 100 (Routine)
Andoya	Norway	Record daily precipitation	52.2 mm (2.1 in)	31 of 100 (Routine)

Counts by Type and Timescale

910 records

Records set or tied on 20 September 2003 by type: Highest daily maximum 361, Lowest daily maximum 95, Highest daily minimum 224, Lowest daily minimum 76, Heaviest daily rainfall 148, Heaviest daily snowfall 1, Deepest snow cover 5.

Records on 20 September 2003 by type
Record type	Records
Highest daily maximum	361
Lowest daily maximum	95
Highest daily minimum	224
Lowest daily minimum	76
Heaviest daily rainfall	148
Heaviest daily snowfall	1
Deepest snow cover	5

Records on 20 September 2003 by timescale: all-time 3, monthly 34, daily 873.

How Much Records Were Beaten By

707 broken records

Margins by which the 707 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 213.9. Ties are not counted.

Top 20 by Significance

20 September 2003

Top 20 records on 20 September 2003 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
20 September 2003	Raymondville, US	daily rain	91.7 mm (3.6 in)	61.2 mm (2.4 in)	84 years	60 of 100 (Major)
20 September 2003	San Rafael, MX	daily rain	64.8 mm (2.6 in)	45.0 mm (1.8 in)	45 years	59 of 100 (Notable)
20 September 2003	San Bartolo, MX	daily rain	59.9 mm (2.4 in)	40.1 mm (1.6 in)	29 years	54 of 100 (Notable)
20 September 2003	Storsteinnes I Balsfjord, NO	monthly rain	45.5 mm (1.8 in)	17.0 mm (0.7 in)	17 years	54 of 100 (Notable)
20 September 2003	Caduao, MX	daily rain	305.8 mm (12.0 in)	213.9 mm (8.4 in)	21 years	52 of 100 (Notable)
20 September 2003	El Pueblito, MX	daily rain	72.1 mm (2.8 in)	46.7 mm (1.8 in)	26 years	52 of 100 (Notable)
20 September 2003	El Saltito, MX	daily rain	75.7 mm (3.0 in)	57.4 mm (2.3 in)	17 years	49 of 100 (Notable)
20 September 2003	Grafton, US	daily rain	41.9 mm (1.6 in)	11.4 mm (0.4 in)	108 years	49 of 100 (Notable)
20 September 2003	Simon Bolivar, MX	daily rain	79.8 mm (3.1 in)	53.9 mm (2.1 in)	16 years	48 of 100 (Notable)
20 September 2003	Sombrerete (Dge), MX	daily rain	48.3 mm (1.9 in)	30.5 mm (1.2 in)	33 years	47 of 100 (Notable)
20 September 2003	Ft Grant, US	daily high max	37.2 C (99.0 F)	2.8 C (5.0 F)	98 years	47 of 100 (Notable)
20 September 2003	Storrs, US	daily high min	20.0 C (68.0 F)	2.8 C (5.0 F)	96 years	45 of 100 (Notable)
20 September 2003	San Francisco del Mezquital, MX	daily rain	54.4 mm (2.1 in)	31.5 mm (1.2 in)	20 years	44 of 100 (Notable)
20 September 2003	Grafton, US	daily high min	18.3 C (64.9 F)	2.7 C (4.9 F)	108 years	44 of 100 (Notable)
20 September 2003	Saint Johnsbury, US	daily high min	18.3 C (64.9 F)	2.2 C (4.0 F)	97 years	43 of 100 (Notable)
20 September 2003	Cuatro Cienegas (Smn), MX	daily rain	46.0 mm (1.8 in)	23.1 mm (0.9 in)	40 years	40 of 100 (Notable)
20 September 2003	Nurnberg, DE	daily high max	30.5 C (86.9 F)	2.8 C (5.0 F)	76 years	39 of 100 (Notable)
20 September 2003	Huntington Lake, US	daily high min	17.2 C (63.0 F)	3.9 C (7.0 F)	64 years	39 of 100 (Notable)
20 September 2003	Klamath, US	daily low min	-1.1 C (30.0 F)	5.5 C (9.9 F)	37 years	39 of 100 (Notable)
20 September 2003	Bajio de Ahuichila, MX	daily rain	32.8 mm (1.3 in)	25.9 mm (1.0 in)	16 years	38 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 2003

Records set or tied on this calendar date in each year from 1812 to 2003. 2003 had 910 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 2003-09-20: 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 50	700
50 to 100	6
100 to 150	0
150 to 200	0
200 to 250	1