Weather Records on 27 September 2017

891 weather records were set or tied worldwide on 27 September 2017. Highest significance: Arnold, US.

Key Facts for 27 September 2017

On 27 September 2017, 891 weather records were set or tied at long-record stations worldwide.
659 were record highs and 75 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 23 monthly and 868 daily.
Arnold set a daily record precipitation of 55.9 mm (2.2 in) on 27 September 2017.
Across 154 earlier years (1799 to 2026) the same calendar date averaged 448 records.

Record Map

891 stations

891 station records on 27 September 2017 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 27 September 2017: highest significance records shown on the map
Station	Country	Type	Value	Significance
Arnold	United States	Record daily precipitation	55.9 mm (2.2 in)	68 of 100 (Major)
Ft Worth Meacham Fld	United States	Record daily precipitation	65.0 mm (2.6 in)	68 of 100 (Major)
Idjevan	Armenia	Record daily precipitation	99.1 mm (3.9 in)	67 of 100 (Major)
Villanueva	United States	Record daily precipitation	64.8 mm (2.6 in)	64 of 100 (Major)
Raton Muni Crews Fld AP	United States	Record daily precipitation	36.6 mm (1.4 in)	64 of 100 (Major)
Apache	United States	Record daily precipitation	92.2 mm (3.6 in)	63 of 100 (Major)
Dilia	United States	Record daily precipitation	72.9 mm (2.9 in)	62 of 100 (Major)
Alpine	United States	Record daily precipitation	47.2 mm (1.9 in)	60 of 100 (Major)
Torreon Navajo Mission	United States	Record daily precipitation	35.3 mm (1.4 in)	60 of 100 (Major)
Santa Fe Co Muni AP	United States	Record daily precipitation	34.5 mm (1.4 in)	58 of 100 (Notable)
Los Alamos	United States	Record daily precipitation	40.4 mm (1.6 in)	57 of 100 (Notable)
Golden	United States	Record daily precipitation	38.4 mm (1.5 in)	54 of 100 (Notable)
Tamaru	Australia	Record daily precipitation	50.0 mm (2.0 in)	53 of 100 (Notable)
Dzana	Russia	Record daily precipitation	55.3 mm (2.2 in)	52 of 100 (Notable)
Lindrith 1 WSW	United States	Record daily precipitation	31.8 mm (1.3 in)	52 of 100 (Notable)
Antelope	United States	Record daily precipitation	80.5 mm (3.2 in)	52 of 100 (Notable)
Cimarron 4 SW	United States	Record daily precipitation	33.0 mm (1.3 in)	51 of 100 (Notable)
Peppermint Grove	Australia	Record daily precipitation	31.0 mm (1.2 in)	49 of 100 (Notable)
Natural Brg	United States	Record low minimum temperature	3.3 C (37.9 F)	49 of 100 (Notable)
Corrales	United States	Record daily precipitation	27.4 mm (1.1 in)	49 of 100 (Notable)
Zuni	United States	Record daily precipitation	29.0 mm (1.1 in)	49 of 100 (Notable)
Quemazon	United States	Record daily precipitation	66.0 mm (2.6 in)	48 of 100 (Notable)
Ft Worth NAS	United States	Record daily precipitation	78.0 mm (3.1 in)	48 of 100 (Notable)
Stanley 2 NNE	United States	Record daily precipitation	28.7 mm (1.1 in)	47 of 100 (Notable)
Elmira	United States	Record high maximum temperature	33.3 C (91.9 F)	47 of 100 (Notable)
Woodson	United States	Record daily precipitation	64.5 mm (2.5 in)	47 of 100 (Notable)
Saint Johnsbury	United States	Record high maximum temperature	32.2 C (90.0 F)	47 of 100 (Notable)
Lily Pond	United States	Record daily precipitation	30.5 mm (1.2 in)	47 of 100 (Notable)
Hopewell	United States	Record daily precipitation	38.1 mm (1.5 in)	47 of 100 (Notable)
Lake City Exp Farm	United States	Record high maximum temperature	31.7 C (89.1 F)	46 of 100 (Notable)
Lowville	United States	Record high maximum temperature	31.1 C (88.0 F)	46 of 100 (Notable)
Duncan	United States	Record daily precipitation	87.4 mm (3.4 in)	46 of 100 (Notable)
Petoskey	United States	Record high maximum temperature	31.1 C (88.0 F)	45 of 100 (Notable)
Gascon	United States	Record daily precipitation	43.2 mm (1.7 in)	45 of 100 (Notable)
Norwich	United States	Record high maximum temperature	32.8 C (91.0 F)	45 of 100 (Notable)
Northfield	United States	Record high maximum temperature	32.8 C (91.0 F)	45 of 100 (Notable)
Youyang	China	Record daily precipitation	88.6 mm (3.5 in)	44 of 100 (Notable)
Charlevoix	United States	Record high maximum temperature	30.6 C (87.1 F)	44 of 100 (Notable)
Houghton Lake 6 WSW	United States	Record high maximum temperature	32.2 C (90.0 F)	44 of 100 (Notable)
Wolf Canyon	United States	Record daily precipitation	35.6 mm (1.4 in)	44 of 100 (Notable)
North Costilla	United States	Record daily precipitation	25.4 mm (1.0 in)	44 of 100 (Notable)
Junction Kimble Co AP	United States	Record daily precipitation	38.4 mm (1.5 in)	44 of 100 (Notable)
Marengo	United States	Record high maximum temperature	33.3 C (91.9 F)	43 of 100 (Notable)
Robinson	United States	Record high maximum temperature	32.8 C (91.0 F)	43 of 100 (Notable)
Hanover	United States	Record high maximum temperature	31.7 C (89.1 F)	43 of 100 (Notable)
Lake Maloya	United States	Record daily precipitation	46.0 mm (1.8 in)	43 of 100 (Notable)
Santa Fe 2	United States	Record daily precipitation	27.9 mm (1.1 in)	43 of 100 (Notable)
Valmora	United States	Record daily precipitation	29.0 mm (1.1 in)	43 of 100 (Notable)
Hemlock	United States	Record high maximum temperature	30.0 C (86.0 F)	43 of 100 (Notable)
Waverly	United States	Record high maximum temperature	32.2 C (90.0 F)	43 of 100 (Notable)
Albany	United States	Record daily precipitation	54.4 mm (2.1 in)	43 of 100 (Notable)
Lake Kemp	United States	Record daily precipitation	90.4 mm (3.6 in)	43 of 100 (Notable)
Effingham 3SW	United States	Record high maximum temperature	35.0 C (95.0 F)	42 of 100 (Notable)
Harbor Beach 1 SSE	United States	Record high minimum temperature	17.8 C (64.0 F)	42 of 100 (Notable)
Owosso Wwtp	United States	Record high maximum temperature	32.8 C (91.0 F)	42 of 100 (Notable)
Sussex 1 NW	United States	Record high maximum temperature	31.7 C (89.1 F)	42 of 100 (Notable)
Alfred	United States	Record high maximum temperature	30.0 C (86.0 F)	42 of 100 (Notable)
Angelica	United States	Record high maximum temperature	31.7 C (89.1 F)	42 of 100 (Notable)
Curapca	Russia	Record high minimum temperature	8.8 C (47.8 F)	41 of 100 (Notable)
Olney 2S	United States	Record high maximum temperature	33.3 C (91.9 F)	41 of 100 (Notable)

Counts by Type and Timescale

891 records

Records set or tied on 27 September 2017 by type: Highest daily maximum 438, Lowest daily maximum 41, Highest daily minimum 221, Lowest daily minimum 34, Heaviest daily rainfall 157.

Records on 27 September 2017 by type
Record type	Records
Highest daily maximum	438
Lowest daily maximum	41
Highest daily minimum	221
Lowest daily minimum	34
Heaviest daily rainfall	157
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 27 September 2017 by timescale: all-time 0, monthly 23, daily 868.

How Much Records Were Beaten By

728 broken records

Margins by which the 728 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 83.7. Ties are not counted.

Top 20 by Significance

27 September 2017

Top 20 records on 27 September 2017 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
27 September 2017	Arnold, US	daily rain	55.9 mm (2.2 in)	49.0 mm (1.9 in)	72 years	68 of 100 (Major)
27 September 2017	Ft Worth Meacham Fld, US	daily rain	65.0 mm (2.6 in)	65.0 mm (2.6 in)	71 years	68 of 100 (Major)
27 September 2017	Idjevan, AM	daily rain	99.1 mm (3.9 in)	83.7 mm (3.3 in)	62 years	67 of 100 (Major)
27 September 2017	Villanueva, US	daily rain	64.8 mm (2.6 in)	54.6 mm (2.1 in)	59 years	64 of 100 (Major)
27 September 2017	Raton Muni Crews Fld AP, US	daily rain	36.6 mm (1.4 in)	35.8 mm (1.4 in)	59 years	64 of 100 (Major)
27 September 2017	Apache, US	daily rain	92.2 mm (3.6 in)	51.1 mm (2.0 in)	90 years	63 of 100 (Major)
27 September 2017	Dilia, US	daily rain	72.9 mm (2.9 in)	40.6 mm (1.6 in)	72 years	62 of 100 (Major)
27 September 2017	Alpine, US	daily rain	47.2 mm (1.9 in)	28.1 mm (1.1 in)	59 years	60 of 100 (Major)
27 September 2017	Torreon Navajo Mission, US	daily rain	35.3 mm (1.4 in)	24.4 mm (1.0 in)	51 years	60 of 100 (Major)
27 September 2017	Santa Fe Co Muni AP, US	daily rain	34.5 mm (1.4 in)	23.1 mm (0.9 in)	72 years	58 of 100 (Notable)
27 September 2017	Los Alamos, US	daily rain	40.4 mm (1.6 in)	22.1 mm (0.9 in)	68 years	57 of 100 (Notable)
27 September 2017	Golden, US	daily rain	38.4 mm (1.5 in)	20.6 mm (0.8 in)	59 years	54 of 100 (Notable)
27 September 2017	Tamaru, AU	daily rain	50.0 mm (2.0 in)	34.0 mm (1.3 in)	28 years	53 of 100 (Notable)
27 September 2017	Dzana, RU	daily rain	55.3 mm (2.2 in)	28.3 mm (1.1 in)	35 years	52 of 100 (Notable)
27 September 2017	Lindrith 1 WSW, US	daily rain	31.8 mm (1.3 in)	25.7 mm (1.0 in)	40 years	52 of 100 (Notable)
27 September 2017	Antelope, US	daily rain	80.5 mm (3.2 in)	51.3 mm (2.0 in)	50 years	52 of 100 (Notable)
27 September 2017	Cimarron 4 SW, US	daily rain	33.0 mm (1.3 in)	16.2 mm (0.6 in)	80 years	51 of 100 (Notable)
27 September 2017	Peppermint Grove, AU	daily rain	31.0 mm (1.2 in)	11.7 mm (0.5 in)	76 years	49 of 100 (Notable)
27 September 2017	Natural Brg, US	daily low min	3.3 C (37.9 F)	3.4 C (6.1 F)	94 years	49 of 100 (Notable)
27 September 2017	Corrales, US	daily rain	27.4 mm (1.1 in)	27.4 mm (1.1 in)	34 years	49 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

1799 to 2017

Records set or tied on this calendar date in each year from 1799 to 2017. 2017 had 891 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 2017-09-27: 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 2026-10-16. Last revised 16 October 2026 (2026-10-16).

Margin	Records
0 to 20	677
20 to 40	36
40 to 60	12
60 to 80	2
80 to 100	1