Weather Records on 17 September 1973

638 weather records were set or tied worldwide on 17 September 1973. Highest significance: Belleville, CA.

Key Facts for 17 September 1973

On 17 September 1973, 638 weather records were set or tied at long-record stations worldwide.
75 were record highs and 417 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 7 monthly and 631 daily.
Belleville set a daily record precipitation of 48.8 mm (1.9 in) on 17 September 1973.
Across 164 earlier years (1796 to 2026) the same calendar date averaged 421 records.

Record Map

638 stations

638 station records on 17 September 1973 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 17 September 1973: highest significance records shown on the map
Station	Country	Type	Value	Significance
Belleville	Canada	Record daily precipitation	48.8 mm (1.9 in)	57 of 100 (Notable)
Trenton Ont Hydro	Canada	Record daily precipitation	59.7 mm (2.4 in)	48 of 100 (Notable)
Tobias Barreto	Brazil	Record daily precipitation	50.0 mm (2.0 in)	46 of 100 (Notable)
Lamoni	United States	Record low maximum temperature	11.7 C (53.1 F)	40 of 100 (Notable)
McPherson	United States	Record low maximum temperature	10.6 C (51.1 F)	40 of 100 (Notable)
Muskegon Co AP	United States	Record low maximum temperature	7.8 C (46.0 F)	39 of 100 (Notable)
Manhattan	United States	Record low maximum temperature	12.2 C (54.0 F)	38 of 100 (Notable)
Southampton	Canada	Record low minimum temperature	0.6 C (33.1 F)	37 of 100 (Notable)
Garnett 1 E	United States	Record low maximum temperature	12.8 C (55.0 F)	37 of 100 (Notable)
Lakin	United States	Record low maximum temperature	9.4 C (48.9 F)	37 of 100 (Notable)
Osage City	United States	Record low maximum temperature	12.8 C (55.0 F)	37 of 100 (Notable)
Winfield 3NE	United States	Record low maximum temperature	13.9 C (57.0 F)	37 of 100 (Notable)
Big Rapids Wtp	United States	Record low maximum temperature	7.2 C (45.0 F)	37 of 100 (Notable)
Fairbury 7S	United States	Record low maximum temperature	8.3 C (46.9 F)	37 of 100 (Notable)
Newport	United States	Record daily snowfall	5.1 cm (2.0 in)	37 of 100 (Notable)
Hays 1 S	United States	Record low maximum temperature	9.4 C (48.9 F)	36 of 100 (Notable)
Newton	United States	Record low maximum temperature	11.1 C (52.0 F)	36 of 100 (Notable)
Norwich	United States	Record low maximum temperature	13.3 C (55.9 F)	36 of 100 (Notable)
Albion	United States	Record low maximum temperature	7.2 C (45.0 F)	36 of 100 (Notable)
Lawrence	United States	Record low maximum temperature	12.8 C (55.0 F)	35 of 100 (Notable)
Millington 3 SE	United States	Record daily precipitation	35.6 mm (1.4 in)	35 of 100 (Notable)
Green Bay	United States	Record low maximum temperature	8.9 C (48.0 F)	35 of 100 (Notable)
Gulu	Uganda	Record daily precipitation	58.1 mm (2.3 in)	34 of 100 (Routine)
Fall Rvr Lake	United States	Record low maximum temperature	15.6 C (60.1 F)	34 of 100 (Routine)
Pratt 3NW	United States	Record low maximum temperature	13.9 C (57.0 F)	34 of 100 (Routine)
Eagle	United States	Record high maximum temperature	22.2 C (72.0 F)	34 of 100 (Routine)
Oktjabrskij-Gorodok	Russia	Record low maximum temperature	7.6 C (45.7 F)	33 of 100 (Routine)
Collbran	United States	Record low minimum temperature	-5.0 C (23.0 F)	33 of 100 (Routine)
Ottawa	United States	Record low maximum temperature	13.3 C (55.9 F)	33 of 100 (Routine)
El Reno 1 N	United States	Record low minimum temperature	5.0 C (41.0 F)	33 of 100 (Routine)
Bloomfield	Canada	Record daily precipitation	38.1 mm (1.5 in)	32 of 100 (Routine)
Clay Ctr	United States	Record low maximum temperature	13.3 C (55.9 F)	32 of 100 (Routine)
Cottonwood Falls	United States	Record low maximum temperature	11.7 C (53.1 F)	32 of 100 (Routine)
Winona	United States	Record low maximum temperature	11.7 C (53.1 F)	32 of 100 (Routine)
Lexington 3E	United States	Record low maximum temperature	15.0 C (59.0 F)	32 of 100 (Routine)
Okeene	United States	Record low maximum temperature	17.8 C (64.0 F)	32 of 100 (Routine)
Appleton	United States	Record low maximum temperature	10.6 C (51.1 F)	32 of 100 (Routine)
Joliet	United States	Record low maximum temperature	16.1 C (61.0 F)	32 of 100 (Routine)
Tierra Blanca (Smn)	Mexico	Record low maximum temperature	25.0 C (77.0 F)	31 of 100 (Routine)
Rushville	United States	Record low maximum temperature	13.9 C (57.0 F)	31 of 100 (Routine)
Horton	United States	Record low maximum temperature	12.8 C (55.0 F)	31 of 100 (Routine)
Meade	United States	Record low minimum temperature	3.3 C (37.9 F)	31 of 100 (Routine)
Olathe 3E	United States	Record low maximum temperature	13.3 C (55.9 F)	31 of 100 (Routine)
Yates Ctr	United States	Record low maximum temperature	14.4 C (57.9 F)	31 of 100 (Routine)
Frankfort 2NE	United States	Record low maximum temperature	11.1 C (52.0 F)	31 of 100 (Routine)
Newaygo Hardy Dam	United States	Record low maximum temperature	8.9 C (48.0 F)	31 of 100 (Routine)
Oregon	United States	Record low maximum temperature	10.0 C (50.0 F)	31 of 100 (Routine)
Warrensburg 4NW	United States	Record low maximum temperature	15.6 C (60.1 F)	31 of 100 (Routine)
Canadian	United States	Record low maximum temperature	17.2 C (63.0 F)	31 of 100 (Routine)
Lancaster 4 WSW	United States	Record low maximum temperature	11.1 C (52.0 F)	31 of 100 (Routine)
Arcadia	United States	Record high maximum temperature	36.1 C (97.0 F)	30 of 100 (Routine)
Morrison	United States	Record low maximum temperature	11.7 C (53.1 F)	30 of 100 (Routine)
Walnut	United States	Record low maximum temperature	12.2 C (54.0 F)	30 of 100 (Routine)
Clinton #1	United States	Record low maximum temperature	12.2 C (54.0 F)	30 of 100 (Routine)
Maquoketa	United States	Record low maximum temperature	13.9 C (57.0 F)	30 of 100 (Routine)
Abilene	United States	Record low minimum temperature	4.4 C (39.9 F)	30 of 100 (Routine)
Harbor Beach 1 SSE	United States	Record low maximum temperature	12.2 C (54.0 F)	30 of 100 (Routine)
Bethany	United States	Record low maximum temperature	13.3 C (55.9 F)	30 of 100 (Routine)
Darlington Wwtp	United States	Record low maximum temperature	11.1 C (52.0 F)	30 of 100 (Routine)
Scottsbluff W B Heilig Fld AP	United States	Record low minimum temperature	-1.1 C (30.0 F)	30 of 100 (Routine)

Counts by Type and Timescale

638 records

Records set or tied on 17 September 1973 by type: Highest daily maximum 38, Lowest daily maximum 262, Highest daily minimum 37, Lowest daily minimum 155, Heaviest daily rainfall 144, Heaviest daily snowfall 2.

Records on 17 September 1973 by type
Record type	Records
Highest daily maximum	38
Lowest daily maximum	262
Highest daily minimum	37
Lowest daily minimum	155
Heaviest daily rainfall	144
Heaviest daily snowfall	2
Deepest snow cover	0

Records on 17 September 1973 by timescale: all-time 0, monthly 7, daily 631.

How Much Records Were Beaten By

496 broken records

Margins by which the 496 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 51.0. Ties are not counted.

Top 20 by Significance

17 September 1973

Top 20 records on 17 September 1973 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
17 September 1973	Belleville, CA	daily rain	48.8 mm (1.9 in)	17.8 mm (0.7 in)	106 years	57 of 100 (Notable)
17 September 1973	Trenton Ont Hydro, CA	daily rain	59.7 mm (2.4 in)	38.9 mm (1.5 in)	11 years	48 of 100 (Notable)
17 September 1973	Tobias Barreto, BR	daily rain	50.0 mm (2.0 in)	43.2 mm (1.7 in)	0 years	46 of 100 (Notable)
17 September 1973	Lamoni, US	daily low max	11.7 C (53.1 F)	6.1 C (11.0 F)	73 years	40 of 100 (Notable)
17 September 1973	McPherson, US	daily low max	10.6 C (51.1 F)	6.6 C (11.9 F)	71 years	40 of 100 (Notable)
17 September 1973	Muskegon Co AP, US	daily low max	7.8 C (46.0 F)	5.0 C (9.0 F)	70 years	39 of 100 (Notable)
17 September 1973	Manhattan, US	daily low max	12.2 C (54.0 F)	5.6 C (10.1 F)	72 years	38 of 100 (Notable)
17 September 1973	Southampton, CA	daily low min	0.6 C (33.1 F)	1.1 C (2.0 F)	85 years	37 of 100 (Notable)
17 September 1973	Garnett 1 E, US	daily low max	12.8 C (55.0 F)	6.6 C (11.9 F)	60 years	37 of 100 (Notable)
17 September 1973	Lakin, US	daily low max	9.4 C (48.9 F)	5.0 C (9.0 F)	72 years	37 of 100 (Notable)
17 September 1973	Osage City, US	daily low max	12.8 C (55.0 F)	4.4 C (7.9 F)	75 years	37 of 100 (Notable)
17 September 1973	Winfield 3NE, US	daily low max	13.9 C (57.0 F)	4.4 C (7.9 F)	72 years	37 of 100 (Notable)
17 September 1973	Big Rapids Wtp, US	daily low max	7.2 C (45.0 F)	5.0 C (9.0 F)	72 years	37 of 100 (Notable)
17 September 1973	Fairbury 7S, US	daily low max	8.3 C (46.9 F)	6.1 C (11.0 F)	72 years	37 of 100 (Notable)
17 September 1973	Newport, US	daily snowfall	5.1 cm (2.0 in)	5.1 cm (2.0 in)	68 years	37 of 100 (Notable)
17 September 1973	Hays 1 S, US	daily low max	9.4 C (48.9 F)	4.5 C (8.1 F)	72 years	36 of 100 (Notable)
17 September 1973	Newton, US	daily low max	11.1 C (52.0 F)	4.5 C (8.1 F)	72 years	36 of 100 (Notable)
17 September 1973	Norwich, US	daily low max	13.3 C (55.9 F)	4.5 C (8.1 F)	72 years	36 of 100 (Notable)
17 September 1973	Albion, US	daily low max	7.2 C (45.0 F)	4.5 C (8.1 F)	72 years	36 of 100 (Notable)
17 September 1973	Lawrence, US	daily low max	12.8 C (55.0 F)	2.2 C (4.0 F)	72 years	35 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

1796 to 1973

Records set or tied on this calendar date in each year from 1796 to 1973. 1973 had 638 records.

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

Records on 09-17 in each year
Year	Records
1796	1
1797	1
1805	1
1833	1
1834	1
1837	2
1845	1
1847	3
1848	1
1850	1
1851	2
1853	2
1854	2
1859	1
1862	1
1867	1
1870	1
1871	1
1872	1
1873	1
1874	1
1875	1
1877	1
1881	1
1882	2
1884	3
1885	3
1886	6
1888	2
1889	8
1891	1
1893	3
1894	1
1895	4
1896	9
1897	4
1898	7
1899	1
1900	4
1901	5
1902	5
1903	28
1904	2
1905	17
1906	10
1907	15
1908	13
1909	7
1910	38
1911	15
1912	17
1913	28
1914	38
1915	48
1916	40
1917	255
1918	41
1919	21
1920	40
1921	66
1922	47
1923	159
1924	80
1925	338
1926	154
1927	420
1928	78
1929	168
1930	147
1931	564
1932	425
1933	415
1934	246
1935	321
1936	219
1937	463
1938	363
1939	294
1940	326
1941	328
1942	581
1943	513
1944	403
1945	614
1946	620
1947	680
1948	630
1949	292
1950	412
1951	359
1952	263
1953	344
1954	449
1955	649
1956	437
1957	405
1958	806
1959	1,210
1960	385
1961	657
1962	432
1963	297
1964	559
1965	1,394
1966	523
1967	331
1968	691
1969	352
1970	412
1971	898
1972	556
1973	638
1974	491
1975	478
1976	636
1977	641
1978	764
1979	804
1980	794
1981	1,155
1982	606
1983	862
1984	1,006
1985	448
1986	1,314
1987	926
1988	982
1989	863
1990	650
1991	1,407
1992	686
1993	950
1994	986
1995	1,145
1996	1,342
1997	1,057
1998	1,137
1999	1,102
2000	1,318
2001	895
2002	1,025
2003	586
2004	872
2005	1,042
2006	1,344
2007	752
2008	886
2009	871
2010	907
2011	1,116
2012	597
2013	1,253
2014	571
2015	953
2016	707
2017	455
2018	899
2019	774
2020	651
2021	345
2022	313
2023	646
2024	954
2025	634
2026	968

Download the Data

Data for records on 1973-09-17: 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 10	466
10 to 20	24
20 to 30	2
30 to 40	1
40 to 50	1
50 to 60	2