Weather Records on 27 September 2025

272 weather records were set or tied worldwide on 27 September 2025. Highest significance: Ashurst Hayden Dam, US.

Key Facts for 27 September 2025

On 27 September 2025, 272 weather records were set or tied at long-record stations worldwide.
204 were record highs and 28 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 1 monthly and 271 daily.
Ashurst Hayden Dam set a daily record precipitation of 34.3 mm (1.4 in) on 27 September 2025.
Across 154 earlier years (1799 to 2026) the same calendar date averaged 452 records.

Record Map

272 stations

272 station records on 27 September 2025 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 27 September 2025: highest significance records shown on the map
Station	Country	Type	Value	Significance
Ashurst Hayden Dam	United States	Record daily precipitation	34.3 mm (1.4 in)	52 of 100 (Notable)
Eagle Mtn	United States	Record daily precipitation	40.6 mm (1.6 in)	49 of 100 (Notable)
Coronado Nmem	United States	Record daily precipitation	50.8 mm (2.0 in)	48 of 100 (Notable)
Adak AP	United States	Record high maximum temperature	17.8 C (64.0 F)	47 of 100 (Notable)
Omu	Japan	Record high minimum temperature	18.8 C (65.8 F)	45 of 100 (Notable)
Happy Jack Rs	United States	Record daily precipitation	49.3 mm (1.9 in)	45 of 100 (Notable)
Vaernes	Norway	Record high maximum temperature	22.9 C (73.2 F)	40 of 100 (Notable)
Ljusnedal	Sweden	Record high maximum temperature	18.0 C (64.4 F)	36 of 100 (Notable)
Guantanamo Bay NAS	Cuba	Record low maximum temperature	28.3 C (82.9 F)	35 of 100 (Notable)
Kurnool	India	Record low maximum temperature	24.4 C (75.9 F)	35 of 100 (Notable)
Ny-Alesund	Norway	Record daily precipitation	35.5 mm (1.4 in)	35 of 100 (Notable)
Trondheim - Voll	Norway	Record high maximum temperature	21.3 C (70.3 F)	34 of 100 (Routine)
Qamdo	China	Record high minimum temperature	11.7 C (53.1 F)	32 of 100 (Routine)
Pachmarhi	India	Record daily precipitation	56.0 mm (2.2 in)	32 of 100 (Routine)
Fountain Hills	United States	Record daily precipitation	45.5 mm (1.8 in)	32 of 100 (Routine)
Patagonia Paton Ctr	United States	Record daily precipitation	31.5 mm (1.2 in)	32 of 100 (Routine)
Fulton L&D #13	United States	Record high maximum temperature	31.1 C (88.0 F)	32 of 100 (Routine)
Otaru	Japan	Record high minimum temperature	15.7 C (60.3 F)	31 of 100 (Routine)
Ridder	Kazakhstan	Record high minimum temperature	17.6 C (63.7 F)	31 of 100 (Routine)
Poronajsk	Russia	Record high maximum temperature	23.5 C (74.3 F)	31 of 100 (Routine)
Kristinehamn	Sweden	Record high maximum temperature	20.0 C (68.0 F)	31 of 100 (Routine)
Oakley	United States	Record high minimum temperature	14.4 C (57.9 F)	31 of 100 (Routine)
Danville Rgnl AP	United States	Record high minimum temperature	20.0 C (68.0 F)	31 of 100 (Routine)
Fujin	China	Record high minimum temperature	15.0 C (59.0 F)	30 of 100 (Routine)
Arvidsjaur_A	Sweden	Record high maximum temperature	16.0 C (60.8 F)	30 of 100 (Routine)
Naimakka	Sweden	Record high maximum temperature	16.3 C (61.3 F)	30 of 100 (Routine)
Longview Wsmo	United States	Record daily precipitation	50.0 mm (2.0 in)	30 of 100 (Routine)
Gainesville Rgnl AP	United States	Record daily precipitation	51.6 mm (2.0 in)	30 of 100 (Routine)
Kitamiesashi	Japan	Record high minimum temperature	17.2 C (63.0 F)	29 of 100 (Routine)
Zajsan	Kazakhstan	Record high minimum temperature	18.0 C (64.4 F)	29 of 100 (Routine)
Sunwu	China	Record high minimum temperature	10.7 C (51.3 F)	28 of 100 (Routine)
Chifeng	China	Record high minimum temperature	14.7 C (58.5 F)	28 of 100 (Routine)
Dinghai	China	Record high minimum temperature	27.1 C (80.8 F)	28 of 100 (Routine)
Semijarka	Kazakhstan	Record high minimum temperature	12.7 C (54.9 F)	28 of 100 (Routine)
Omno-Gobi	Mongolia	Record high minimum temperature	9.3 C (48.7 F)	28 of 100 (Routine)
Overtornea	Sweden	Record high maximum temperature	16.0 C (60.8 F)	28 of 100 (Routine)
Sydney Airport AMO	Australia	Record high minimum temperature	19.6 C (67.3 F)	27 of 100 (Routine)
Tongliao	China	Record high minimum temperature	17.0 C (62.6 F)	27 of 100 (Routine)
Zhangwu	China	Record high minimum temperature	17.5 C (63.5 F)	27 of 100 (Routine)
Chitradurga	India	Record low maximum temperature	23.6 C (74.5 F)	27 of 100 (Routine)
Slettnes Fyr	Norway	Record high minimum temperature	9.6 C (49.3 F)	27 of 100 (Routine)
Torsvag Fyr	Norway	Record high minimum temperature	11.4 C (52.5 F)	27 of 100 (Routine)
Andoya	Norway	Record high maximum temperature	15.1 C (59.2 F)	27 of 100 (Routine)
Kljuchi	Russia	Record high minimum temperature	10.4 C (50.7 F)	27 of 100 (Routine)
Kumagaya	Japan	Record high maximum temperature	30.9 C (87.6 F)	26 of 100 (Routine)
Fresno Yosemite Intl	United States	Record high minimum temperature	20.6 C (69.1 F)	26 of 100 (Routine)
Rovaniemi Apukka	Finland	Record high maximum temperature	14.9 C (58.8 F)	25 of 100 (Routine)
Haboro	Japan	Record high minimum temperature	16.1 C (61.0 F)	25 of 100 (Routine)
Sierra Vista	United States	Record daily precipitation	30.0 mm (1.2 in)	25 of 100 (Routine)
W Union 2	United States	Record high minimum temperature	18.9 C (66.0 F)	25 of 100 (Routine)
Yuma Proving Ground	United States	Record low maximum temperature	26.1 C (79.0 F)	25 of 100 (Routine)
Roberts	Cayman Islands [United Kingdom]	Record high minimum temperature	29.0 C (84.2 F)	24 of 100 (Routine)
Gadag	India	Record low maximum temperature	24.0 C (75.2 F)	24 of 100 (Routine)
Jagdalpur	India	Record low maximum temperature	26.0 C (78.8 F)	24 of 100 (Routine)
Choshi	Japan	Record high minimum temperature	23.5 C (74.3 F)	24 of 100 (Routine)
Botosani	Romania	Record low minimum temperature	-0.5 C (31.1 F)	24 of 100 (Routine)
Camp Pendleton MCAS	United States	Record high minimum temperature	18.9 C (66.0 F)	24 of 100 (Routine)
Wakkanai	Japan	Record high minimum temperature	19.6 C (67.3 F)	23 of 100 (Routine)
Tsu	Japan	Record high maximum temperature	29.5 C (85.1 F)	23 of 100 (Routine)
Baruunharaa	Mongolia	Record high minimum temperature	11.5 C (52.7 F)	23 of 100 (Routine)

Counts by Type and Timescale

272 records

Records set or tied on 27 September 2025 by type: Highest daily maximum 84, Lowest daily maximum 24, Highest daily minimum 120, Lowest daily minimum 4, Heaviest daily rainfall 37, Heaviest daily snowfall 1, Deepest snow cover 2.

Records on 27 September 2025 by type
Record type	Records
Highest daily maximum	84
Lowest daily maximum	24
Highest daily minimum	120
Lowest daily minimum	4
Heaviest daily rainfall	37
Heaviest daily snowfall	1
Deepest snow cover	2

Records on 27 September 2025 by timescale: all-time 0, monthly 1, daily 271.

How Much Records Were Beaten By

210 broken records

Margins by which the 210 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 46.0. Ties are not counted.

Top 20 by Significance

27 September 2025

Top 20 records on 27 September 2025 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 September 2025	Ashurst Hayden Dam, US	daily rain	34.3 mm (1.4 in)	31.5 mm (1.2 in)	40 years	52 of 100 (Notable)
27 September 2025	Eagle Mtn, US	daily rain	40.6 mm (1.6 in)	26.9 mm (1.1 in)	63 years	49 of 100 (Notable)
27 September 2025	Coronado Nmem, US	daily rain	50.8 mm (2.0 in)	46.0 mm (1.8 in)	8 years	48 of 100 (Notable)
27 September 2025	Adak AP, US	daily high max	17.8 C (64.0 F)	3.9 C (7.0 F)	64 years	47 of 100 (Notable)
27 September 2025	Omu, JP	daily high min	18.8 C (65.8 F)	6.2 C (11.2 F)	67 years	45 of 100 (Notable)
27 September 2025	Happy Jack Rs, US	daily rain	49.3 mm (1.9 in)	29.5 mm (1.2 in)	40 years	45 of 100 (Notable)
27 September 2025	Vaernes, NO	daily high max	22.9 C (73.2 F)	3.4 C (6.1 F)	79 years	40 of 100 (Notable)
27 September 2025	Ljusnedal, SE	daily high max	18.0 C (64.4 F)	0.7 C (1.3 F)	87 years	36 of 100 (Notable)
27 September 2025	Guantanamo Bay NAS, CU	daily low max	28.3 C (82.9 F)	1.7 C (3.1 F)	55 years	35 of 100 (Notable)
27 September 2025	Kurnool, IN	daily low max	24.4 C (75.9 F)	4.5 C (8.1 F)	36 years	35 of 100 (Notable)
27 September 2025	Ny-Alesund, NO	daily rain	35.5 mm (1.4 in)	12.5 mm (0.5 in)	32 years	35 of 100 (Notable)
27 September 2025	Trondheim - Voll, NO	daily high max	21.3 C (70.3 F)	1.3 C (2.3 F)	79 years	34 of 100 (Routine)
27 September 2025	Qamdo, CN	daily high min	11.7 C (53.1 F)	1.4 C (2.5 F)	67 years	32 of 100 (Routine)
27 September 2025	Pachmarhi, IN	daily rain	56.0 mm (2.2 in)	8.2 mm (0.32 in)	67 years	32 of 100 (Routine)
27 September 2025	Fountain Hills, US	daily rain	45.5 mm (1.8 in)	16.3 mm (0.6 in)	40 years	32 of 100 (Routine)
27 September 2025	Patagonia Paton Ctr, US	daily rain	31.5 mm (1.2 in)	19.6 mm (0.8 in)	30 years	32 of 100 (Routine)
27 September 2025	Fulton L&D #13, US	daily high max	31.1 C (88.0 F)	1.7 C (3.1 F)	71 years	32 of 100 (Routine)
27 September 2025	Otaru, JP	daily high min	15.7 C (60.3 F)	1.0 C (1.8 F)	72 years	31 of 100 (Routine)
27 September 2025	Ridder, KZ	monthly high min	17.6 C (63.7 F)	3.8 C (6.8 F)	17 years	31 of 100 (Routine)
27 September 2025	Poronajsk, RU	daily high max	23.5 C (74.3 F)	2.5 C (4.5 F)	48 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

1799 to 2025

Records set or tied on this calendar date in each year from 1799 to 2025. 2025 had 272 records.

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

Records on 09-27 in each year
Year	Records
1799	1
1828	1
1836	2
1847	1
1851	1
1854	2
1855	2
1859	2
1866	2
1867	3
1874	1
1875	1
1877	2
1880	1
1881	4
1882	1
1885	5
1887	1
1890	3
1891	1
1892	1
1893	1
1894	5
1895	6
1896	1
1897	2
1898	4
1899	1
1900	5
1901	3
1902	12
1903	7
1904	12
1905	21
1906	21
1907	9
1908	36
1909	17
1910	20
1911	31
1912	25
1913	27
1914	24
1915	80
1916	57
1917	41
1918	58
1919	45
1920	54
1921	26
1922	111
1923	125
1924	115
1925	129
1926	581
1927	244
1928	288
1929	225
1930	178
1931	222
1932	194
1933	559
1934	298
1935	319
1936	435
1937	309
1938	366
1939	572
1940	706
1941	257
1942	1,353
1943	503
1944	323
1945	475
1946	387
1947	813
1948	405
1949	407
1950	223
1951	480
1952	539
1953	567
1954	507
1955	386
1956	825
1957	644
1958	585
1959	582
1960	337
1961	376
1962	352
1963	849
1964	724
1965	688
1966	426
1967	502
1968	286
1969	233
1970	773
1971	762
1972	989
1973	1,031
1974	408
1975	790
1976	905
1977	852
1978	773
1979	741
1980	559
1981	680
1982	1,076
1983	791
1984	1,297
1985	661
1986	1,772
1987	1,013
1988	494
1989	852
1990	379
1991	894
1992	659
1993	727
1994	764
1995	698
1996	1,468
1997	730
1998	1,774
1999	1,059
2000	1,031
2001	980
2002	992
2003	830
2004	665
2005	1,061
2006	596
2007	1,091
2008	659
2009	987
2010	1,153
2011	965
2012	624
2013	823
2014	813
2015	664
2016	600
2017	891
2018	600
2019	755
2020	659
2021	893
2022	642
2023	747
2024	1,449
2025	272
2026	358

Download the Data

Data for records on 2025-09-27: 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 2026-10-17. Last revised 17 October 2026 (2026-10-17).

Histogram of margins by which records were beaten on 27 September 2025
Margin	Records
0 to 10	197
10 to 20	8
20 to 30	2
30 to 40	2
40 to 50	1