Weather Records on 21 September 2025

591 weather records were set or tied worldwide on 21 September 2025. Highest significance: Cassville 1 NE, US.

Key Facts for 21 September 2025

On 21 September 2025, 591 weather records were set or tied at long-record stations worldwide.
406 were record highs and 12 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 0 monthly and 591 daily.
Cassville 1 NE set a daily record precipitation of 95.3 mm (3.8 in) on 21 September 2025.
Across 155 earlier years (1805 to 2026) the same calendar date averaged 450 records.

Record Map

591 stations

591 station records on 21 September 2025 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 September 2025: highest significance records shown on the map
Station	Country	Type	Value	Significance
Cassville 1 NE	United States	Record daily precipitation	95.3 mm (3.8 in)	65 of 100 (Major)
Basel-Mulhouse	France	Record daily precipitation	48.6 mm (1.9 in)	62 of 100 (Major)
Marseilles-Marignane	France	Record daily precipitation	110.0 mm (4.3 in)	58 of 100 (Notable)
Ellsworth	United States	Record daily precipitation	106.9 mm (4.2 in)	58 of 100 (Notable)
Rheinstetten	Germany	Record daily precipitation	31.9 mm (1.3 in)	57 of 100 (Notable)
Dodge City	United States	Record daily precipitation	28.2 mm (1.1 in)	52 of 100 (Notable)
Siikajoki Revonlahti	Finland	Record daily precipitation	41.3 mm (1.6 in)	50 of 100 (Notable)
Davis 2 WSW Exp Farm	United States	Record high minimum temperature	22.8 C (73.0 F)	50 of 100 (Notable)
Lieksa Lampela	Finland	Record daily precipitation	26.1 mm (1.0 in)	47 of 100 (Notable)
Gooding 2 S	United States	Record high minimum temperature	16.0 C (60.8 F)	47 of 100 (Notable)
Goshen Muni AP	United States	Record daily precipitation	37.1 mm (1.5 in)	46 of 100 (Notable)
Embrun	France	Record daily precipitation	40.5 mm (1.6 in)	44 of 100 (Notable)
Rastatt	Germany	Record daily precipitation	31.2 mm (1.2 in)	44 of 100 (Notable)
Weissach	Germany	Record daily precipitation	30.6 mm (1.2 in)	44 of 100 (Notable)
Heinersreuth-Vollhof	Germany	Record daily precipitation	25.9 mm (1.0 in)	43 of 100 (Notable)
Swan Falls Ph	United States	Record high minimum temperature	18.3 C (64.9 F)	43 of 100 (Notable)
Sidney	United States	Record high maximum temperature	31.1 C (88.0 F)	43 of 100 (Notable)
Fairfield	United States	Record high minimum temperature	15.0 C (59.0 F)	42 of 100 (Notable)
Strasbourg-Entzheim	France	Record daily precipitation	28.8 mm (1.1 in)	40 of 100 (Notable)
Renningen-Ihinger Hof	Germany	Record daily precipitation	30.0 mm (1.2 in)	40 of 100 (Notable)
Muhlacker	Germany	Record daily precipitation	27.0 mm (1.1 in)	40 of 100 (Notable)
Varfu Omul	Romania	Record high minimum temperature	7.7 C (45.9 F)	39 of 100 (Notable)
Grangeville	United States	Record high minimum temperature	12.2 C (54.0 F)	37 of 100 (Notable)
Sarajevo	Bosnia and Herzegovina	Record high maximum temperature	30.9 C (87.6 F)	36 of 100 (Notable)
Bretten	Germany	Record daily precipitation	28.2 mm (1.1 in)	36 of 100 (Notable)
Ft Jones Rs	United States	Record high minimum temperature	13.9 C (57.0 F)	36 of 100 (Notable)
Nurnberg-Netzstall	Germany	Record daily precipitation	31.9 mm (1.3 in)	35 of 100 (Notable)
Bialystok	Poland	Record high minimum temperature	15.5 C (59.9 F)	35 of 100 (Notable)
Summer Lake 1 S	United States	Record high minimum temperature	14.4 C (57.9 F)	35 of 100 (Notable)
Herrenberg	Germany	Record daily precipitation	28.9 mm (1.1 in)	34 of 100 (Routine)
Rheinau-Memprechtshofen	Germany	Record daily precipitation	29.2 mm (1.1 in)	34 of 100 (Routine)
Longmire Rainier Nps	United States	Record daily precipitation	45.7 mm (1.8 in)	34 of 100 (Routine)
Eagle Rvr	United States	Record high minimum temperature	14.4 C (57.9 F)	34 of 100 (Routine)
Emmendingen-Mundingen	Germany	Record daily precipitation	34.7 mm (1.4 in)	33 of 100 (Routine)
Rottenburg-Kiebingen	Germany	Record daily precipitation	28.6 mm (1.1 in)	33 of 100 (Routine)
Schallstadt-Mengen	Germany	Record daily precipitation	39.3 mm (1.5 in)	33 of 100 (Routine)
Hatgal	Mongolia	Record high minimum temperature	5.7 C (42.3 F)	33 of 100 (Routine)
Holm	Russia	Record high minimum temperature	14.8 C (58.6 F)	33 of 100 (Routine)
Haikou	China	Record high minimum temperature	27.2 C (81.0 F)	32 of 100 (Routine)
Weisweil-Waldeckhof	Germany	Record daily precipitation	30.4 mm (1.2 in)	32 of 100 (Routine)
Kaunas	Lithuania	Record high minimum temperature	15.2 C (59.4 F)	32 of 100 (Routine)
Ca Mau	Vietnam	Record high minimum temperature	28.8 C (83.8 F)	32 of 100 (Routine)
Jerome	United States	Record high minimum temperature	15.0 C (59.0 F)	31 of 100 (Routine)
Natoma	United States	Record daily precipitation	41.4 mm (1.6 in)	31 of 100 (Routine)
Kystovka	Russia	Record high minimum temperature	9.0 C (48.2 F)	30 of 100 (Routine)
Harsfjarden	Sweden	Record high minimum temperature	15.1 C (59.2 F)	30 of 100 (Routine)
Elzach-Fisnacht	Germany	Record daily precipitation	45.7 mm (1.8 in)	29 of 100 (Routine)
Aunet	Norway	Record daily precipitation	36.7 mm (1.4 in)	29 of 100 (Routine)
Arvidsjaur_A	Sweden	Record daily precipitation	26.5 mm (1.0 in)	29 of 100 (Routine)
Clay City 6SSE	United States	Record daily precipitation	64.8 mm (2.6 in)	29 of 100 (Routine)
Luray 2N	United States	Record daily precipitation	69.6 mm (2.7 in)	29 of 100 (Routine)
Pelton Dam	United States	Record high minimum temperature	15.6 C (60.1 F)	29 of 100 (Routine)
Daugavpils	Latvia	Record high minimum temperature	15.3 C (59.5 F)	28 of 100 (Routine)
Tosontsengel	Mongolia	Record high minimum temperature	5.3 C (41.5 F)	28 of 100 (Routine)
Volochanka	Russia	Record low minimum temperature	-12.2 C (10.0 F)	28 of 100 (Routine)
Lead Hill	United States	Record daily precipitation	42.7 mm (1.7 in)	28 of 100 (Routine)
Qaqortoq	Greenland [Denmark]	Record high minimum temperature	9.7 C (49.5 F)	27 of 100 (Routine)
Cjulbju	Russia	Record high minimum temperature	4.4 C (39.9 F)	27 of 100 (Routine)
Forest Lake 5NE	United States	Record high minimum temperature	17.8 C (64.0 F)	27 of 100 (Routine)
Darganata	Uzbekistan	Record high minimum temperature	20.2 C (68.4 F)	27 of 100 (Routine)

Counts by Type and Timescale

591 records

Records set or tied on 21 September 2025 by type: Highest daily maximum 118, Lowest daily maximum 9, Highest daily minimum 288, Lowest daily minimum 3, Heaviest daily rainfall 173.

Records on 21 September 2025 by type
Record type	Records
Highest daily maximum	118
Lowest daily maximum	9
Highest daily minimum	288
Lowest daily minimum	3
Heaviest daily rainfall	173
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 21 September 2025 by timescale: all-time 0, monthly 0, daily 591.

How Much Records Were Beaten By

489 broken records

Margins by which the 489 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 70.4. Ties are not counted.

Top 20 by Significance

21 September 2025

Top 20 records on 21 September 2025 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 September 2025	Cassville 1 NE, US	daily rain	95.3 mm (3.8 in)	45.0 mm (1.8 in)	110 years	65 of 100 (Major)
21 September 2025	Basel-Mulhouse, FR	daily rain	48.6 mm (1.9 in)	22.7 mm (0.9 in)	56 years	62 of 100 (Major)
21 September 2025	Marseilles-Marignane, FR	daily rain	110.0 mm (4.3 in)	70.4 mm (2.8 in)	28 years	58 of 100 (Notable)
21 September 2025	Ellsworth, US	daily rain	106.9 mm (4.2 in)	51.0 mm (2.0 in)	66 years	58 of 100 (Notable)
21 September 2025	Rheinstetten, DE	daily rain	31.9 mm (1.3 in)	15.3 mm (0.6 in)	92 years	57 of 100 (Notable)
21 September 2025	Dodge City, US	daily rain	28.2 mm (1.1 in)	15.0 mm (0.6 in)	94 years	52 of 100 (Notable)
21 September 2025	Siikajoki Revonlahti, FI	daily rain	41.3 mm (1.6 in)	18.4 mm (0.7 in)	15 years	50 of 100 (Notable)
21 September 2025	Davis 2 WSW Exp Farm, US	daily high min	22.8 C (73.0 F)	3.4 C (6.1 F)	106 years	50 of 100 (Notable)
21 September 2025	Lieksa Lampela, FI	daily rain	26.1 mm (1.0 in)	14.8 mm (0.6 in)	44 years	47 of 100 (Notable)
21 September 2025	Gooding 2 S, US	daily high min	16.0 C (60.8 F)	3.2 C (5.8 F)	108 years	47 of 100 (Notable)
21 September 2025	Goshen Muni AP, US	daily rain	37.1 mm (1.5 in)	21.4 mm (0.8 in)	66 years	46 of 100 (Notable)
21 September 2025	Embrun, FR	daily rain	40.5 mm (1.6 in)	15.8 mm (0.6 in)	56 years	44 of 100 (Notable)
21 September 2025	Rastatt, DE	daily rain	31.2 mm (1.2 in)	13.1 mm (0.5 in)	56 years	44 of 100 (Notable)
21 September 2025	Weissach, DE	daily rain	30.6 mm (1.2 in)	20.8 mm (0.8 in)	12 years	44 of 100 (Notable)
21 September 2025	Heinersreuth-Vollhof, DE	daily rain	25.9 mm (1.0 in)	1.7 mm (0.07 in)	138 years	43 of 100 (Notable)
21 September 2025	Swan Falls Ph, US	daily high min	18.3 C (64.9 F)	3.3 C (5.9 F)	87 years	43 of 100 (Notable)
21 September 2025	Sidney, US	daily high max	31.1 C (88.0 F)	2.2 C (4.0 F)	103 years	43 of 100 (Notable)
21 September 2025	Fairfield, US	daily high min	15.0 C (59.0 F)	3.3 C (5.9 F)	87 years	42 of 100 (Notable)
21 September 2025	Strasbourg-Entzheim, FR	daily rain	28.8 mm (1.1 in)	8.2 mm (0.32 in)	56 years	40 of 100 (Notable)
21 September 2025	Renningen-Ihinger Hof, DE	daily rain	30.0 mm (1.2 in)	8.5 mm (0.33 in)	56 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 2025

Records set or tied on this calendar date in each year from 1805 to 2025. 2025 had 591 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	591
2026	478

Download the Data

Data for records on 2025-09-21: 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 2026-10-15 (15 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	450
10 to 20	28
20 to 30	6
30 to 40	2
40 to 50	1
50 to 60	1
60 to 70	0
70 to 80	1