Weather Records on 21 September 2005

1,143 weather records were set or tied worldwide on 21 September 2005. Highest significance: Palo Verde, MX.

Key Facts for 21 September 2005

On 21 September 2005, 1,143 weather records were set or tied at long-record stations worldwide.
854 were record highs and 134 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 16 monthly and 1,127 daily.
Palo Verde set a daily record low minimum temperature of 2.2 C (36.0 F) on 21 September 2005.
Across 155 earlier years (1805 to 2026) the same calendar date averaged 446 records.

Record Map

1,143 stations

1,143 station records on 21 September 2005 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 September 2005: highest significance records shown on the map
Station	Country	Type	Value	Significance
Palo Verde	Mexico	Record low minimum temperature	2.2 C (36.0 F)	48 of 100 (Notable)
Constanta	Romania	Record daily precipitation	44.2 mm (1.7 in)	48 of 100 (Notable)
Clifton	United States	Record high minimum temperature	25.6 C (78.1 F)	48 of 100 (Notable)
Newman	United States	Record low minimum temperature	2.8 C (37.0 F)	48 of 100 (Notable)
Idaho Falls FAA AP	United States	Record daily precipitation	25.7 mm (1.0 in)	46 of 100 (Notable)
Charles City	United States	Record high maximum temperature	32.2 C (90.0 F)	44 of 100 (Notable)
Laketown	United States	Record high minimum temperature	11.1 C (52.0 F)	44 of 100 (Notable)
Tapalpa (Smn)	Mexico	Record high minimum temperature	18.3 C (64.9 F)	43 of 100 (Notable)
Hardy	United States	Record high maximum temperature	35.0 C (95.0 F)	43 of 100 (Notable)
Mason City	United States	Record high maximum temperature	34.4 C (93.9 F)	43 of 100 (Notable)
Grand Junction Walker Fld	United States	Record daily precipitation	30.7 mm (1.2 in)	43 of 100 (Notable)
Ramgundam	India	Record daily precipitation	97.0 mm (3.8 in)	42 of 100 (Notable)
Tower 2S	United States	Record high maximum temperature	26.7 C (80.1 F)	42 of 100 (Notable)
Baraboo Wwtp	United States	Record high maximum temperature	28.3 C (82.9 F)	42 of 100 (Notable)
Manitowoc	United States	Record high maximum temperature	31.1 C (88.0 F)	42 of 100 (Notable)
Lake City	United States	Record high minimum temperature	7.2 C (45.0 F)	41 of 100 (Notable)
Taos	United States	Record high maximum temperature	30.6 C (87.1 F)	41 of 100 (Notable)
Beaver Dam Wwtp	United States	Record high maximum temperature	30.6 C (87.1 F)	41 of 100 (Notable)
Lufkin Angelina Co AP	United States	Record high maximum temperature	40.0 C (104.0 F)	41 of 100 (Notable)
Akron 4 E	United States	Record high minimum temperature	16.1 C (61.0 F)	40 of 100 (Notable)
Leesville	United States	Record high maximum temperature	37.8 C (100.0 F)	40 of 100 (Notable)
Reserve	United States	Record high maximum temperature	36.1 C (97.0 F)	40 of 100 (Notable)
Batesville	United States	Record high maximum temperature	37.2 C (99.0 F)	40 of 100 (Notable)
Lynch	United States	Record high maximum temperature	36.1 C (97.0 F)	40 of 100 (Notable)
Durham	United States	Record daily precipitation	30.5 mm (1.2 in)	40 of 100 (Notable)
Grand View 4 NW	United States	Record high minimum temperature	14.4 C (57.9 F)	39 of 100 (Notable)
Milford 4 NW	United States	Record high maximum temperature	32.8 C (91.0 F)	39 of 100 (Notable)
De Ridder	United States	Record high maximum temperature	37.8 C (100.0 F)	39 of 100 (Notable)
Fredericksburg	United States	Record high maximum temperature	36.1 C (97.0 F)	39 of 100 (Notable)
Cody	United States	Record high minimum temperature	14.4 C (57.9 F)	39 of 100 (Notable)
Hardy	United States	Record high minimum temperature	21.7 C (71.1 F)	38 of 100 (Notable)
Canon City	United States	Record high maximum temperature	32.8 C (91.0 F)	38 of 100 (Notable)
Zirahuen	Mexico	Record daily precipitation	59.9 mm (2.4 in)	37 of 100 (Notable)
Shoshone 1 WNW	United States	Record high minimum temperature	13.9 C (57.0 F)	37 of 100 (Notable)
Lake Arthur 7 SW	United States	Record high maximum temperature	37.2 C (99.0 F)	37 of 100 (Notable)
Iawakia	Australia	Record daily precipitation	29.5 mm (1.2 in)	36 of 100 (Notable)
Searcy	United States	Record high maximum temperature	38.3 C (100.9 F)	36 of 100 (Notable)
Julesburg	United States	Record high maximum temperature	36.1 C (97.0 F)	36 of 100 (Notable)
McKinney Muni AP	United States	Record high maximum temperature	38.3 C (100.9 F)	36 of 100 (Notable)
Jacksonville NAS	United States	Record daily precipitation	59.7 mm (2.4 in)	36 of 100 (Notable)
Cabo San Lucas	Mexico	Record high maximum temperature	40.6 C (105.1 F)	35 of 100 (Notable)
Guanacevi (Smn)	Mexico	Record high maximum temperature	30.6 C (87.1 F)	35 of 100 (Notable)
Malvern	United States	Record high maximum temperature	38.9 C (102.0 F)	35 of 100 (Notable)
Cheyenne Wells 2NE	United States	Record high maximum temperature	35.6 C (96.1 F)	35 of 100 (Notable)
Atwood	United States	Record high maximum temperature	37.8 C (100.0 F)	35 of 100 (Notable)
Natchitoches	United States	Record high maximum temperature	37.2 C (99.0 F)	35 of 100 (Notable)
New Iberia AP - Acadiana Rgnl	United States	Record high maximum temperature	37.8 C (100.0 F)	35 of 100 (Notable)
St Joseph 3 N	United States	Record high maximum temperature	38.3 C (100.9 F)	35 of 100 (Notable)
Winnsboro 5 SSE	United States	Record high maximum temperature	38.9 C (102.0 F)	35 of 100 (Notable)
Moorhead	United States	Record high maximum temperature	37.8 C (100.0 F)	35 of 100 (Notable)
Monticello Muni AP	United States	Record high maximum temperature	40.6 C (105.1 F)	35 of 100 (Notable)
Nuevo Valle Moreno	Mexico	Record high maximum temperature	30.6 C (87.1 F)	34 of 100 (Routine)
Los Reyes	Mexico	Record low minimum temperature	5.0 C (41.0 F)	34 of 100 (Routine)
Alexandria	United States	Record high maximum temperature	38.3 C (100.9 F)	34 of 100 (Routine)
Calhoun 2 N	United States	Record high maximum temperature	39.4 C (102.9 F)	34 of 100 (Routine)
Thermopolis	United States	Record high minimum temperature	14.4 C (57.9 F)	34 of 100 (Routine)
El Dorado Goodwin Fld	United States	Record high maximum temperature	38.9 C (102.0 F)	34 of 100 (Routine)
Xuzhou	China	Record daily precipitation	47.5 mm (1.9 in)	33 of 100 (Routine)
Carapan	Mexico	Record low minimum temperature	3.9 C (39.0 F)	33 of 100 (Routine)
Castle Hot Springs	United States	Record high minimum temperature	26.1 C (79.0 F)	33 of 100 (Routine)

Counts by Type and Timescale

1,143 records

Records set or tied on 21 September 2005 by type: Highest daily maximum 563, Lowest daily maximum 63, Highest daily minimum 291, Lowest daily minimum 71, Heaviest daily rainfall 155.

Records on 21 September 2005 by type
Record type	Records
Highest daily maximum	563
Lowest daily maximum	63
Highest daily minimum	291
Lowest daily minimum	71
Heaviest daily rainfall	155
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 21 September 2005 by timescale: all-time 0, monthly 16, daily 1,127.

How Much Records Were Beaten By

779 broken records

Margins by which the 779 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 54.4. Ties are not counted.

Top 20 by Significance

21 September 2005

Top 20 records on 21 September 2005 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 September 2005	Palo Verde, MX	daily low min	2.2 C (36.0 F)	5.0 C (9.0 F)	54 years	48 of 100 (Notable)
21 September 2005	Constanta, RO	daily rain	44.2 mm (1.7 in)	30.1 mm (1.2 in)	43 years	48 of 100 (Notable)
21 September 2005	Clifton, US	daily high min	25.6 C (78.1 F)	3.4 C (6.1 F)	95 years	48 of 100 (Notable)
21 September 2005	Newman, US	monthly low min	2.8 C (37.0 F)	1.1 C (2.0 F)	84 years	48 of 100 (Notable)
21 September 2005	Idaho Falls FAA AP, US	daily rain	25.7 mm (1.0 in)	13.5 mm (0.5 in)	44 years	46 of 100 (Notable)
21 September 2005	Charles City, US	daily high max	32.2 C (90.0 F)	2.2 C (4.0 F)	109 years	44 of 100 (Notable)
21 September 2005	Laketown, US	daily high min	11.1 C (52.0 F)	1.7 C (3.1 F)	104 years	44 of 100 (Notable)
21 September 2005	Tapalpa (Smn), MX	daily high min	18.3 C (64.9 F)	3.3 C (5.9 F)	59 years	43 of 100 (Notable)
21 September 2005	Hardy, US	daily high max	35.0 C (95.0 F)	2.8 C (5.0 F)	95 years	43 of 100 (Notable)
21 September 2005	Mason City, US	daily high max	34.4 C (93.9 F)	2.2 C (4.0 F)	107 years	43 of 100 (Notable)
21 September 2005	Grand Junction Walker Fld, US	daily rain	30.7 mm (1.2 in)	10.6 mm (0.4 in)	43 years	43 of 100 (Notable)
21 September 2005	Ramgundam, IN	daily rain	97.0 mm (3.8 in)	54.4 mm (2.1 in)	36 years	42 of 100 (Notable)
21 September 2005	Tower 2S, US	daily high max	26.7 C (80.1 F)	1.1 C (2.0 F)	109 years	42 of 100 (Notable)
21 September 2005	Baraboo Wwtp, US	daily high max	28.3 C (82.9 F)	1.1 C (2.0 F)	111 years	42 of 100 (Notable)
21 September 2005	Manitowoc, US	daily high max	31.1 C (88.0 F)	1.7 C (3.1 F)	96 years	42 of 100 (Notable)
21 September 2005	Lake City, US	daily high min	7.2 C (45.0 F)	1.1 C (2.0 F)	95 years	41 of 100 (Notable)
21 September 2005	Taos, US	daily high max	30.6 C (87.1 F)	0.6 C (1.1 F)	100 years	41 of 100 (Notable)
21 September 2005	Beaver Dam Wwtp, US	daily high max	30.6 C (87.1 F)	0.6 C (1.1 F)	111 years	41 of 100 (Notable)
21 September 2005	Lufkin Angelina Co AP, US	daily high max	40.0 C (104.0 F)	2.8 C (5.0 F)	80 years	41 of 100 (Notable)
21 September 2005	Akron 4 E, US	daily high min	16.1 C (61.0 F)	3.3 C (5.9 F)	79 years	40 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

1805 to 2005

Records set or tied on this calendar date in each year from 1805 to 2005. 2005 had 1,143 records.

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

Records on 09-21 in each year
Year	Records
1805	1
1812	1
1825	2
1840	1
1841	1
1842	1
1848	1
1854	1
1856	2
1868	1
1872	2
1873	1
1877	1
1878	1
1881	1
1882	1
1884	1
1886	1
1888	2
1889	1
1891	10
1892	1
1893	10
1894	2
1895	3
1896	2
1897	6
1898	6
1899	3
1900	2
1901	5
1902	5
1903	8
1904	20
1905	12
1906	17
1907	10
1908	17
1909	10
1910	8
1911	18
1912	26
1913	37
1914	29
1915	34
1916	48
1917	28
1918	43
1919	54
1920	29
1921	64
1922	35
1923	232
1924	291
1925	278
1926	178
1927	165
1928	81
1929	232
1930	82
1931	681
1932	242
1933	193
1934	492
1935	199
1936	329
1937	487
1938	508
1939	308
1940	908
1941	416
1942	291
1943	407
1944	413
1945	507
1946	176
1947	534
1948	301
1949	298
1950	334
1951	241
1952	430
1953	382
1954	453
1955	752
1956	1,100
1957	366
1958	588
1959	513
1960	418
1961	441
1962	1,085
1963	306
1964	374
1965	1,088
1966	565
1967	577
1968	790
1969	593
1970	708
1971	645
1972	599
1973	421
1974	652
1975	528
1976	694
1977	918
1978	818
1979	736
1980	990
1981	696
1982	1,484
1983	2,207
1984	707
1985	796
1986	671
1987	965
1988	557
1989	1,002
1990	716
1991	1,021
1992	752
1993	911
1994	713
1995	2,002
1996	1,233
1997	1,112
1998	1,481
1999	1,025
2000	884
2001	718
2002	696
2003	959
2004	888
2005	1,143
2006	920
2007	742
2008	740
2009	715
2010	1,290
2011	542
2012	595
2013	769
2014	716
2015	565
2016	989
2017	1,178
2018	1,051
2019	833
2020	580
2021	465
2022	1,049
2023	783
2024	470
2025	588
2026	469

Download the Data

Data for records on 2005-09-21: 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 2026-10-13 (13 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Margin	Records
0 to 10	749
10 to 20	19
20 to 30	7
30 to 40	2
40 to 50	1
50 to 60	1