Weather Records on 1 September 2017

686 weather records were set or tied worldwide on 1 September 2017. Highest significance: Franklin Sewage Plt, US.

Key Facts for 1 September 2017

On 1 September 2017, 686 weather records were set or tied at long-record stations worldwide.
286 were record highs and 218 were record lows, counting maximum and minimum temperature.
By timescale, 11 were all-time records, 42 monthly and 633 daily.
Franklin Sewage Plt set a daily record precipitation of 120.4 mm (4.7 in) on 1 September 2017.
Across 161 earlier years (1797 to 2026) the same calendar date averaged 440 records.

Record Map

686 stations

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

Weather records on 1 September 2017: highest significance records shown on the map
Station	Country	Type	Value	Significance
Franklin Sewage Plt	United States	Record daily precipitation	120.4 mm (4.7 in)	76 of 100 (Major)
Jackson Exp STN	United States	Record daily precipitation	122.4 mm (4.8 in)	76 of 100 (Major)
Bowling Green Warren Co AP	United States	Record daily precipitation	125.2 mm (4.9 in)	73 of 100 (Major)
Bolivar Wtr Wks	United States	Record daily precipitation	153.4 mm (6.0 in)	71 of 100 (Major)
Culbertson	United States	Record daily precipitation	43.9 mm (1.7 in)	69 of 100 (Major)
Lake Cormorant	United States	Record daily precipitation	94.2 mm (3.7 in)	65 of 100 (Major)
Lambert 1W	United States	Record daily precipitation	101.6 mm (4.0 in)	64 of 100 (Major)
Helena	United States	Record daily precipitation	106.7 mm (4.2 in)	63 of 100 (Major)
Old Hickory Dam	United States	Record daily precipitation	98.3 mm (3.9 in)	63 of 100 (Major)
Portland Sewage Plt	United States	Record daily precipitation	120.7 mm (4.8 in)	63 of 100 (Major)
Mammoth Cave	United States	Record daily precipitation	163.8 mm (6.4 in)	61 of 100 (Major)
San Francisco Dwtn	United States	Record high minimum temperature	20.6 C (69.1 F)	61 of 100 (Major)
Milan Exp STN	United States	Record daily precipitation	92.5 mm (3.6 in)	60 of 100 (Major)
Dyersburg	United States	Record daily precipitation	61.0 mm (2.4 in)	59 of 100 (Notable)
Hohenwald	United States	Record daily precipitation	82.6 mm (3.3 in)	59 of 100 (Notable)
Russellville	United States	Record daily precipitation	202.2 mm (8.0 in)	58 of 100 (Notable)
Pleasant Hill	United States	Record daily precipitation	149.4 mm (5.9 in)	57 of 100 (Notable)
Kingston Springs	United States	Record daily precipitation	132.1 mm (5.2 in)	57 of 100 (Notable)
Springfield Exp STN	United States	Record daily precipitation	188.0 mm (7.4 in)	56 of 100 (Notable)
Scottsville	United States	Record daily precipitation	106.7 mm (4.2 in)	55 of 100 (Notable)
Tunica 2 N	United States	Record daily precipitation	168.1 mm (6.6 in)	55 of 100 (Notable)
Bethpage 1 S	United States	Record daily precipitation	86.1 mm (3.4 in)	54 of 100 (Notable)
Cheatham L&D	United States	Record daily precipitation	156.7 mm (6.2 in)	54 of 100 (Notable)
Hernando	United States	Record daily precipitation	106.7 mm (4.2 in)	53 of 100 (Notable)
Selmer	United States	Record daily precipitation	153.7 mm (6.1 in)	53 of 100 (Notable)
Dehradun	India	Record daily precipitation	150.1 mm (5.9 in)	52 of 100 (Notable)
Huntingdon Wtp	United States	Record daily precipitation	87.6 mm (3.4 in)	52 of 100 (Notable)
Pudasjarvi Sarakyla	Finland	Record daily precipitation	27.4 mm (1.1 in)	51 of 100 (Notable)
Wynne	United States	Record daily precipitation	87.4 mm (3.4 in)	51 of 100 (Notable)
Cooperstown	United States	Record low maximum temperature	10.0 C (50.0 F)	51 of 100 (Notable)
Lexington	United States	Record daily precipitation	170.2 mm (6.7 in)	51 of 100 (Notable)
Catawba	United States	Record daily precipitation	63.0 mm (2.5 in)	50 of 100 (Notable)
Rohwer 2 NNE	United States	Record daily precipitation	81.3 mm (3.2 in)	49 of 100 (Notable)
Barren Rvr Lake	United States	Record daily precipitation	110.5 mm (4.4 in)	48 of 100 (Notable)
Neapolis Rsch & Ed STN	United States	Record daily precipitation	91.2 mm (3.6 in)	48 of 100 (Notable)
San Francisco Oceanside	United States	Record high maximum temperature	32.8 C (91.0 F)	47 of 100 (Notable)
Booneville	United States	Record daily precipitation	70.6 mm (2.8 in)	46 of 100 (Notable)
Lapinlahti Lamminkayra	Finland	Record daily precipitation	29.4 mm (1.2 in)	45 of 100 (Notable)
Lexington	United States	Record daily precipitation	30.5 mm (1.2 in)	45 of 100 (Notable)
Dickson	United States	Record low maximum temperature	20.6 C (69.1 F)	45 of 100 (Notable)
Ft Ross	United States	Record high maximum temperature	30.0 C (86.0 F)	44 of 100 (Notable)
Woodland Hills Pierce College	United States	Record high minimum temperature	24.4 C (75.9 F)	44 of 100 (Notable)
Mtn Lake	United States	Record daily precipitation	66.0 mm (2.6 in)	44 of 100 (Notable)
Greenville Wtp	United States	Record low maximum temperature	16.1 C (61.0 F)	44 of 100 (Notable)
Lebanon	United States	Record daily precipitation	64.3 mm (2.5 in)	44 of 100 (Notable)
Savannah 6 SW	United States	Record daily precipitation	81.0 mm (3.2 in)	44 of 100 (Notable)
Dermott 3 NE	United States	Record daily precipitation	81.3 mm (3.2 in)	43 of 100 (Notable)
St Joseph 3 N	United States	Record low maximum temperature	26.1 C (79.0 F)	43 of 100 (Notable)
Waverly	United States	Record low maximum temperature	19.4 C (66.9 F)	43 of 100 (Notable)
Lebanon 7 N	United States	Record daily precipitation	66.3 mm (2.6 in)	43 of 100 (Notable)
Talladega	United States	Record daily precipitation	54.6 mm (2.1 in)	42 of 100 (Notable)
Augusta	United States	Record daily precipitation	67.3 mm (2.6 in)	42 of 100 (Notable)
Saint Charles	United States	Record daily precipitation	92.2 mm (3.6 in)	42 of 100 (Notable)
Madison Sewage Plt	United States	Record daily precipitation	64.8 mm (2.6 in)	42 of 100 (Notable)
Stearns 2S	United States	Record daily precipitation	41.4 mm (1.6 in)	42 of 100 (Notable)
Buffalo Bill Dam	United States	Record high minimum temperature	21.1 C (70.0 F)	42 of 100 (Notable)
Lexington Bluegrass AP	United States	Record daily precipitation	51.8 mm (2.0 in)	42 of 100 (Notable)
Napa State Hospital	United States	Record high minimum temperature	17.2 C (63.0 F)	41 of 100 (Notable)
Rock Is L&D 15	United States	Record low minimum temperature	9.4 C (48.9 F)	41 of 100 (Notable)
Nolin Rvr Lake	United States	Record daily precipitation	86.9 mm (3.4 in)	41 of 100 (Notable)

Counts by Type and Timescale

686 records

Records set or tied on 1 September 2017 by type: Highest daily maximum 140, Lowest daily maximum 107, Highest daily minimum 146, Lowest daily minimum 111, Heaviest daily rainfall 182.

Records on 1 September 2017 by type
Record type	Records
Highest daily maximum	140
Lowest daily maximum	107
Highest daily minimum	146
Lowest daily minimum	111
Heaviest daily rainfall	182
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 1 September 2017 by timescale: all-time 11, monthly 42, daily 633.

How Much Records Were Beaten By

528 broken records

Margins by which the 528 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 138.9. Ties are not counted.

Top 20 by Significance

1 September 2017

Top 20 records on 1 September 2017 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
1 September 2017	Franklin Sewage Plt, US	daily rain	120.4 mm (4.7 in)	74.2 mm (2.9 in)	88 years	76 of 100 (Major)
1 September 2017	Jackson Exp STN, US	daily rain	122.4 mm (4.8 in)	69.8 mm (2.7 in)	88 years	76 of 100 (Major)
1 September 2017	Bowling Green Warren Co AP, US	daily rain	125.2 mm (4.9 in)	74.4 mm (2.9 in)	79 years	73 of 100 (Major)
1 September 2017	Bolivar Wtr Wks, US	daily rain	153.4 mm (6.0 in)	102.6 mm (4.0 in)	72 years	71 of 100 (Major)
1 September 2017	Culbertson, US	daily rain	43.9 mm (1.7 in)	23.6 mm (0.9 in)	111 years	69 of 100 (Major)
1 September 2017	Lake Cormorant, US	daily rain	94.2 mm (3.7 in)	70.3 mm (2.8 in)	52 years	65 of 100 (Major)
1 September 2017	Lambert 1W, US	daily rain	101.6 mm (4.0 in)	66.0 mm (2.6 in)	72 years	64 of 100 (Major)
1 September 2017	Helena, US	daily rain	106.7 mm (4.2 in)	68.6 mm (2.7 in)	52 years	63 of 100 (Major)
1 September 2017	Old Hickory Dam, US	daily rain	98.3 mm (3.9 in)	78.5 mm (3.1 in)	58 years	63 of 100 (Major)
1 September 2017	Portland Sewage Plt, US	daily rain	120.7 mm (4.8 in)	74.5 mm (2.9 in)	58 years	63 of 100 (Major)
1 September 2017	Mammoth Cave, US	monthly rain	163.8 mm (6.4 in)	52.0 mm (2.0 in)	37 years	61 of 100 (Major)
1 September 2017	San Francisco Dwtn, US	daily high min	20.6 C (69.1 F)	4.5 C (8.1 F)	84 years	61 of 100 (Major)
1 September 2017	Milan Exp STN, US	daily rain	92.5 mm (3.6 in)	41.7 mm (1.6 in)	116 years	60 of 100 (Major)
1 September 2017	Dyersburg, US	daily rain	61.0 mm (2.4 in)	33.1 mm (1.3 in)	95 years	59 of 100 (Notable)
1 September 2017	Hohenwald, US	daily rain	82.6 mm (3.3 in)	34.8 mm (1.4 in)	88 years	59 of 100 (Notable)
1 September 2017	Russellville, US	monthly rain	202.2 mm (8.0 in)	48.8 mm (1.9 in)	37 years	58 of 100 (Notable)
1 September 2017	Pleasant Hill, US	daily rain	149.4 mm (5.9 in)	100.9 mm (4.0 in)	36 years	57 of 100 (Notable)
1 September 2017	Kingston Springs, US	daily rain	132.1 mm (5.2 in)	90.7 mm (3.6 in)	36 years	57 of 100 (Notable)
1 September 2017	Springfield Exp STN, US	all-time rain	188.0 mm (7.4 in)	29.5 mm (1.2 in)	37 years	56 of 100 (Notable)
1 September 2017	Scottsville, US	daily rain	106.7 mm (4.2 in)	74.9 mm (2.9 in)	28 years	55 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

1797 to 2017

Records set or tied on this calendar date in each year from 1797 to 2017. 2017 had 686 records.

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

Records on 09-01 in each year
Year	Records
1797	1
1806	1
1819	1
1827	1
1831	1
1838	1
1851	1
1853	1
1854	1
1857	1
1858	1
1859	1
1860	2
1861	1
1865	1
1866	1
1867	2
1869	3
1871	1
1873	1
1876	2
1877	2
1878	3
1879	2
1881	5
1883	1
1886	3
1887	3
1888	2
1890	2
1892	2
1894	3
1897	4
1898	10
1899	3
1900	2
1901	14
1902	5
1903	16
1904	9
1905	6
1906	26
1907	14
1908	26
1909	34
1910	22
1911	16
1912	47
1913	32
1914	23
1915	46
1916	16
1917	24
1918	31
1919	19
1920	31
1921	46
1922	67
1923	75
1924	210
1925	127
1926	182
1927	136
1928	166
1929	324
1930	264
1931	233
1932	550
1933	622
1934	654
1935	584
1936	385
1937	502
1938	373
1939	303
1940	333
1941	497
1942	532
1943	578
1944	377
1945	497
1946	642
1947	555
1948	460
1949	1,102
1950	849
1951	668
1952	644
1953	937
1954	407
1955	413
1956	504
1957	320
1958	427
1959	519
1960	408
1961	531
1962	368
1963	416
1964	621
1965	657
1966	596
1967	1,263
1968	604
1969	493
1970	502
1971	464
1972	518
1973	874
1974	895
1975	939
1976	627
1977	500
1978	809
1979	459
1980	671
1981	649
1982	642
1983	1,167
1984	619
1985	901
1986	964
1987	909
1988	651
1989	823
1990	749
1991	687
1992	1,010
1993	1,122
1994	1,291
1995	1,165
1996	823
1997	1,161
1998	1,159
1999	925
2000	1,613
2001	904
2002	778
2003	1,254
2004	827
2005	901
2006	1,157
2007	976
2008	1,204
2009	1,003
2010	1,313
2011	1,071
2012	874
2013	775
2014	515
2015	661
2016	522
2017	686
2018	399
2019	800
2020	689
2021	751
2022	1,016
2023	720
2024	938
2025	359
2026	521

Download the Data

Data for records on 2017-09-01: 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 2026-10-16 (16 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	461
20 to 40	36
40 to 60	12
60 to 80	12
80 to 100	1
100 to 120	3
120 to 140	3