Weather Records on 23 September 2017

1,371 weather records were set or tied worldwide on 23 September 2017. Highest significance: Rocky Ford 2 SE, US.

Key Facts for 23 September 2017

On 23 September 2017, 1,371 weather records were set or tied at long-record stations worldwide.
1,017 were record highs and 226 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 76 monthly and 1,293 daily.
Rocky Ford 2 SE set a daily record precipitation of 29.7 mm (1.2 in) on 23 September 2017.
Across 169 earlier years (1793 to 2026) the same calendar date averaged 426 records.

Record Map

1,371 stations

1,371 station records on 23 September 2017 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 23 September 2017: highest significance records shown on the map
Station	Country	Type	Value	Significance
Rocky Ford 2 SE	United States	Record daily precipitation	29.7 mm (1.2 in)	57 of 100 (Notable)
Bodie California St Historic P	United States	Record low maximum temperature	1.1 C (34.0 F)	54 of 100 (Notable)
Sundance	United States	Record daily precipitation	57.7 mm (2.3 in)	51 of 100 (Notable)
Dodgeville Wwtp	United States	Record high maximum temperature	32.2 C (90.0 F)	49 of 100 (Notable)
Oconomowoc Wwtp	United States	Record high maximum temperature	33.9 C (93.0 F)	49 of 100 (Notable)
Albany	Australia	Record daily precipitation	33.4 mm (1.3 in)	47 of 100 (Notable)
Frankfort 2NE	United States	Record high minimum temperature	21.7 C (71.1 F)	47 of 100 (Notable)
Tower 2S	United States	Record high maximum temperature	26.7 C (80.1 F)	47 of 100 (Notable)
Grant 5 SE	United States	Record daily snowfall	5.6 cm (2.2 in)	47 of 100 (Notable)
Yerington	United States	Record low maximum temperature	11.7 C (53.1 F)	47 of 100 (Notable)
Tucumcari 4 NE	United States	Record high minimum temperature	20.6 C (69.1 F)	47 of 100 (Notable)
Mauston 1 SE	United States	Record high maximum temperature	32.8 C (91.0 F)	47 of 100 (Notable)
Raton Muni Crews Fld AP	United States	Record daily precipitation	40.9 mm (1.6 in)	47 of 100 (Notable)
Charlevoix	United States	Record high maximum temperature	32.8 C (91.0 F)	46 of 100 (Notable)
Spirit Lake	United States	Record high maximum temperature	33.3 C (91.9 F)	45 of 100 (Notable)
Bloomingdale	United States	Record high maximum temperature	34.4 C (93.9 F)	45 of 100 (Notable)
Detour Village	United States	Record high minimum temperature	17.8 C (64.0 F)	45 of 100 (Notable)
Greenville 2 NNE	United States	Record high maximum temperature	36.1 C (97.0 F)	45 of 100 (Notable)
Lake City Exp Farm	United States	Record high maximum temperature	33.9 C (93.0 F)	45 of 100 (Notable)
Bridger 2 N	United States	Record low maximum temperature	4.4 C (39.9 F)	45 of 100 (Notable)
Spencer 6 SSE	United States	Record daily precipitation	44.5 mm (1.8 in)	45 of 100 (Notable)
Mason City	United States	Record high maximum temperature	33.3 C (91.9 F)	44 of 100 (Notable)
Osage	United States	Record high maximum temperature	33.9 C (93.0 F)	44 of 100 (Notable)
Grayling	United States	Record high maximum temperature	33.3 C (91.9 F)	44 of 100 (Notable)
Central Michigan UNIV	United States	Record high maximum temperature	36.1 C (97.0 F)	44 of 100 (Notable)
Pontiac Wwtp	United States	Record high maximum temperature	33.3 C (91.9 F)	44 of 100 (Notable)
Greeley	United States	Record high maximum temperature	35.6 C (96.1 F)	44 of 100 (Notable)
Elephant Butte Dam	United States	Record high minimum temperature	22.2 C (72.0 F)	44 of 100 (Notable)
Mauston 1 SE	United States	Record high minimum temperature	18.9 C (66.0 F)	44 of 100 (Notable)
Minocqua	United States	Record high minimum temperature	17.2 C (63.0 F)	44 of 100 (Notable)
Sturgeon Bay Exp Farm	United States	Record high minimum temperature	19.4 C (66.9 F)	44 of 100 (Notable)
Saginaw Mbs Intl AP	United States	Record high minimum temperature	20.0 C (68.0 F)	44 of 100 (Notable)
Emmett 2 E	United States	Record low maximum temperature	12.2 C (54.0 F)	43 of 100 (Notable)
Elgin Water	United States	Record high maximum temperature	33.3 C (91.9 F)	43 of 100 (Notable)
Jacksonville 2E	United States	Record high maximum temperature	36.1 C (97.0 F)	43 of 100 (Notable)
Rock Is L&D 15	United States	Record high maximum temperature	34.4 C (93.9 F)	43 of 100 (Notable)
Streator 2SE	United States	Record high maximum temperature	33.3 C (91.9 F)	43 of 100 (Notable)
Charlevoix	United States	Record high minimum temperature	19.4 C (66.9 F)	43 of 100 (Notable)
Artichoke Lake 1 E	United States	Record daily precipitation	59.7 mm (2.4 in)	43 of 100 (Notable)
Grand Meadow	United States	Record high minimum temperature	21.1 C (70.0 F)	43 of 100 (Notable)
Princeton	United States	Record high maximum temperature	33.3 C (91.9 F)	43 of 100 (Notable)
Minden	United States	Record low maximum temperature	12.8 C (55.0 F)	43 of 100 (Notable)
Manti	United States	Record low maximum temperature	8.3 C (46.9 F)	43 of 100 (Notable)
Chilton	United States	Record high minimum temperature	18.9 C (66.0 F)	43 of 100 (Notable)
Hayward Rs	United States	Record high maximum temperature	29.4 C (84.9 F)	43 of 100 (Notable)
Colorado Springs Muni AP	United States	Record daily precipitation	27.2 mm (1.1 in)	43 of 100 (Notable)
Bodie California St Historic P	United States	Record low minimum temperature	-14.4 C (6.1 F)	42 of 100 (Notable)
Walnut	United States	Record high maximum temperature	34.4 C (93.9 F)	42 of 100 (Notable)
Lake Park 3SSE	United States	Record high maximum temperature	36.7 C (98.1 F)	42 of 100 (Notable)
McPherson	United States	Record high minimum temperature	25.6 C (78.1 F)	42 of 100 (Notable)
Wallace	United States	Record high minimum temperature	18.3 C (64.9 F)	42 of 100 (Notable)
Big Rapids Wtp	United States	Record high maximum temperature	33.9 C (93.0 F)	42 of 100 (Notable)
Coldwater St School	United States	Record high maximum temperature	33.3 C (91.9 F)	42 of 100 (Notable)
Newberry-Luce Co Rd Commission	United States	Record high minimum temperature	18.3 C (64.9 F)	42 of 100 (Notable)
Petoskey	United States	Record high maximum temperature	32.8 C (91.0 F)	42 of 100 (Notable)
Potosi 4 SW	United States	Record high maximum temperature	33.3 C (91.9 F)	42 of 100 (Notable)
Minatare Dam (Usbr)	United States	Record low maximum temperature	8.9 C (48.0 F)	42 of 100 (Notable)
Tonopah	United States	Record low maximum temperature	8.9 C (48.0 F)	42 of 100 (Notable)
Provo Byu	United States	Record low maximum temperature	11.1 C (52.0 F)	42 of 100 (Notable)
Buffalo Bill Dam	United States	Record low maximum temperature	5.6 C (42.1 F)	42 of 100 (Notable)

Counts by Type and Timescale

1,371 records

Records set or tied on 23 September 2017 by type: Highest daily maximum 587, Lowest daily maximum 145, Highest daily minimum 430, Lowest daily minimum 81, Heaviest daily rainfall 123, Heaviest daily snowfall 1, Deepest snow cover 4.

Records on 23 September 2017 by type
Record type	Records
Highest daily maximum	587
Lowest daily maximum	145
Highest daily minimum	430
Lowest daily minimum	81
Heaviest daily rainfall	123
Heaviest daily snowfall	1
Deepest snow cover	4

Records on 23 September 2017 by timescale: all-time 2, monthly 76, daily 1,293.

How Much Records Were Beaten By

1,104 broken records

Margins by which the 1,104 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 152.0. Ties are not counted.

Top 20 by Significance

23 September 2017

Top 20 records on 23 September 2017 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
23 September 2017	Rocky Ford 2 SE, US	daily rain	29.7 mm (1.2 in)	19.5 mm (0.8 in)	76 years	57 of 100 (Notable)
23 September 2017	Bodie California St Historic P, US	monthly low max	1.1 C (34.0 F)	2.2 C (4.0 F)	122 years	54 of 100 (Notable)
23 September 2017	Sundance, US	monthly rain	57.7 mm (2.3 in)	16.0 mm (0.6 in)	30 years	51 of 100 (Notable)
23 September 2017	Dodgeville Wwtp, US	daily high max	32.2 C (90.0 F)	5.0 C (9.0 F)	116 years	49 of 100 (Notable)
23 September 2017	Oconomowoc Wwtp, US	daily high max	33.9 C (93.0 F)	4.5 C (8.1 F)	121 years	49 of 100 (Notable)
23 September 2017	Albany, AU	daily rain	33.4 mm (1.3 in)	5.2 mm (0.20 in)	110 years	47 of 100 (Notable)
23 September 2017	Frankfort 2NE, US	daily high min	21.7 C (71.1 F)	3.4 C (6.1 F)	108 years	47 of 100 (Notable)
23 September 2017	Tower 2S, US	daily high max	26.7 C (80.1 F)	3.9 C (7.0 F)	118 years	47 of 100 (Notable)
23 September 2017	Grant 5 SE, US	daily snowfall	5.6 cm (2.2 in)	5.6 cm (2.2 in)	88 years	47 of 100 (Notable)
23 September 2017	Yerington, US	daily low max	11.7 C (53.1 F)	4.4 C (7.9 F)	94 years	47 of 100 (Notable)
23 September 2017	Tucumcari 4 NE, US	daily high min	20.6 C (69.1 F)	2.8 C (5.0 F)	106 years	47 of 100 (Notable)
23 September 2017	Mauston 1 SE, US	daily high max	32.8 C (91.0 F)	3.9 C (7.0 F)	108 years	47 of 100 (Notable)
23 September 2017	Raton Muni Crews Fld AP, US	daily rain	40.9 mm (1.6 in)	31.0 mm (1.2 in)	2 years	47 of 100 (Notable)
23 September 2017	Charlevoix, US	daily high max	32.8 C (91.0 F)	3.4 C (6.1 F)	96 years	46 of 100 (Notable)
23 September 2017	Spirit Lake, US	daily high max	33.3 C (91.9 F)	3.3 C (5.9 F)	119 years	45 of 100 (Notable)
23 September 2017	Bloomingdale, US	daily high max	34.4 C (93.9 F)	3.3 C (5.9 F)	96 years	45 of 100 (Notable)
23 September 2017	Detour Village, US	daily high min	17.8 C (64.0 F)	2.2 C (4.0 F)	108 years	45 of 100 (Notable)
23 September 2017	Greenville 2 NNE, US	daily high max	36.1 C (97.0 F)	5.5 C (9.9 F)	80 years	45 of 100 (Notable)
23 September 2017	Lake City Exp Farm, US	daily high max	33.9 C (93.0 F)	2.8 C (5.0 F)	108 years	45 of 100 (Notable)
23 September 2017	Bridger 2 N, US	daily low max	4.4 C (39.9 F)	3.4 C (6.1 F)	104 years	45 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

1793 to 2017

Records set or tied on this calendar date in each year from 1793 to 2017. 2017 had 1,371 records.

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

Records on 09-23 in each year
Year	Records
1793	1
1796	1
1799	1
1804	1
1832	1
1835	1
1838	1
1842	3
1843	1
1845	2
1848	1
1849	1
1850	1
1851	2
1854	3
1855	1
1859	2
1864	1
1865	1
1866	1
1868	1
1871	1
1872	1
1874	1
1875	1
1876	1
1877	1
1881	4
1882	2
1885	1
1886	1
1887	1
1888	1
1889	3
1890	2
1891	1
1892	2
1893	4
1895	9
1896	5
1897	1
1898	2
1899	4
1900	4
1901	2
1902	6
1903	7
1904	19
1905	6
1906	6
1907	19
1908	19
1909	15
1910	8
1911	11
1912	15
1913	22
1914	29
1915	25
1916	324
1917	56
1918	34
1919	40
1920	44
1921	47
1922	34
1923	74
1924	194
1925	223
1926	459
1927	247
1928	382
1929	198
1930	472
1931	600
1932	383
1933	281
1934	361
1935	239
1936	377
1937	557
1938	389
1939	279
1940	374
1941	490
1942	557
1943	322
1944	381
1945	652
1946	623
1947	803
1948	259
1949	496
1950	267
1951	462
1952	432
1953	271
1954	324
1955	852
1956	299
1957	539
1958	641
1959	307
1960	470
1961	670
1962	344
1963	568
1964	322
1965	783
1966	528
1967	341
1968	481
1969	450
1970	1,457
1971	578
1972	461
1973	674
1974	1,543
1975	1,038
1976	463
1977	616
1978	500
1979	586
1980	1,037
1981	717
1982	775
1983	1,744
1984	1,121
1985	924
1986	740
1987	1,077
1988	653
1989	1,376
1990	702
1991	519
1992	976
1993	983
1994	1,140
1995	1,868
1996	809
1997	1,060
1998	1,326
1999	1,207
2000	2,026
2001	790
2002	930
2003	1,243
2004	986
2005	1,207
2006	1,509
2007	1,153
2008	835
2009	1,201
2010	1,360
2011	666
2012	785
2013	573
2014	595
2015	587
2016	774
2017	1,371
2018	693
2019	565
2020	618
2021	602
2022	551
2023	812
2024	499
2025	449
2026	384

Download the Data

Data for records on 2017-09-23: 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	1,097
20 to 40	2
40 to 60	3
60 to 80	1
80 to 100	0
100 to 120	0
120 to 140	0
140 to 160	1