Weather Records on 1 September 1973

874 weather records were set or tied worldwide on 1 September 1973. Highest significance: Fosston 1 E, US.

Key Facts for 1 September 1973

On 1 September 1973, 874 weather records were set or tied at long-record stations worldwide.
277 were record highs and 283 were record lows, counting maximum and minimum temperature.
By timescale, 2 were all-time records, 38 monthly and 834 daily.
Fosston 1 E set a monthly record daily precipitation of 138.9 mm (5.5 in) on 1 September 1973.
Across 161 earlier years (1797 to 2026) the same calendar date averaged 438 records.

Record Map

874 stations

874 station records on 1 September 1973 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 1 September 1973: highest significance records shown on the map
Station	Country	Type	Value	Significance
Fosston 1 E	United States	Record daily precipitation	138.9 mm (5.5 in)	68 of 100 (Major)
Powell	United States	Record daily precipitation	27.4 mm (1.1 in)	65 of 100 (Major)
Minnedosa	Canada	Record daily precipitation	53.3 mm (2.1 in)	63 of 100 (Major)
Mahnomen	United States	Record daily precipitation	101.6 mm (4.0 in)	54 of 100 (Notable)
Second Valley (Spring Grove)	Australia	Record daily precipitation	31.5 mm (1.2 in)	51 of 100 (Notable)
Washburn	United States	Record daily precipitation	26.2 mm (1.0 in)	51 of 100 (Notable)
Cody	United States	Record daily precipitation	26.9 mm (1.1 in)	51 of 100 (Notable)
Red Lake Indian Agcy	United States	Record daily precipitation	56.6 mm (2.2 in)	50 of 100 (Notable)
Cartwright	Canada	Record daily precipitation	26.2 mm (1.0 in)	49 of 100 (Notable)
Elwood 8 S	United States	Record daily precipitation	53.1 mm (2.1 in)	49 of 100 (Notable)
Minden	United States	Record daily precipitation	57.2 mm (2.3 in)	49 of 100 (Notable)
Big Trout Lake	Canada	Record daily precipitation	83.8 mm (3.3 in)	48 of 100 (Notable)
Hobson	United States	Record daily precipitation	30.0 mm (1.2 in)	48 of 100 (Notable)
Victor 4 N	United States	Record daily precipitation	33.3 mm (1.3 in)	48 of 100 (Notable)
Pierson	Canada	Record daily precipitation	33.0 mm (1.3 in)	47 of 100 (Notable)
American Falls 6 NE	United States	Record low maximum temperature	13.3 C (55.9 F)	47 of 100 (Notable)
Roy 8 NE	United States	Record daily precipitation	29.5 mm (1.2 in)	47 of 100 (Notable)
Piracicaba	Brazil	Record daily precipitation	45.0 mm (1.8 in)	46 of 100 (Notable)
Waskada	Canada	Record daily precipitation	33.0 mm (1.3 in)	46 of 100 (Notable)
Bemidji	United States	Record daily precipitation	71.9 mm (2.8 in)	44 of 100 (Notable)
Westhope	United States	Record daily precipitation	73.7 mm (2.9 in)	44 of 100 (Notable)
Glenrock 5 ESE	United States	Record daily precipitation	50.8 mm (2.0 in)	43 of 100 (Notable)
Kohala Mis 175.1	United States	Record low maximum temperature	22.8 C (73.0 F)	43 of 100 (Notable)
Kondoolka	Australia	Record daily precipitation	25.9 mm (1.0 in)	42 of 100 (Notable)
Ada	United States	Record daily precipitation	44.2 mm (1.7 in)	42 of 100 (Notable)
Grand Marais	United States	Record daily precipitation	60.2 mm (2.4 in)	41 of 100 (Notable)
Melstone	United States	Record daily precipitation	25.4 mm (1.0 in)	41 of 100 (Notable)
Bellows Falls	United States	Record daily precipitation	81.5 mm (3.2 in)	41 of 100 (Notable)
Falls River	Canada	Record daily precipitation	89.9 mm (3.5 in)	40 of 100 (Notable)
Morrisburg	Canada	Record high minimum temperature	26.1 C (79.0 F)	39 of 100 (Notable)
Bridger 2 N	United States	Record daily precipitation	34.8 mm (1.4 in)	39 of 100 (Notable)
Flatwillow 4 ENE	United States	Record daily precipitation	30.5 mm (1.2 in)	39 of 100 (Notable)
Lakeview	United States	Record daily precipitation	29.0 mm (1.1 in)	39 of 100 (Notable)
Kearney 4 NE	United States	Record daily precipitation	30.5 mm (1.2 in)	39 of 100 (Notable)
Grenora	United States	Record daily precipitation	26.9 mm (1.1 in)	39 of 100 (Notable)
Usina Gaviao Peixoto (Cpfl)	Brazil	Record daily precipitation	45.2 mm (1.8 in)	38 of 100 (Notable)
Midale	Canada	Record daily precipitation	47.5 mm (1.9 in)	38 of 100 (Notable)
Denton	United States	Record daily precipitation	26.4 mm (1.0 in)	38 of 100 (Notable)
Lame Deer	United States	Record daily precipitation	30.7 mm (1.2 in)	37 of 100 (Notable)
Mc Cook	United States	Record daily precipitation	53.3 mm (2.1 in)	37 of 100 (Notable)
Beach	United States	Record daily precipitation	32.5 mm (1.3 in)	37 of 100 (Notable)
Wahpeton 3 N	United States	Record daily precipitation	55.4 mm (2.2 in)	37 of 100 (Notable)
Riverdale	United States	Record daily precipitation	35.3 mm (1.4 in)	37 of 100 (Notable)
Usina Santa Fe	Brazil	Record daily precipitation	48.5 mm (1.9 in)	36 of 100 (Notable)
Savage	United States	Record daily precipitation	27.7 mm (1.1 in)	36 of 100 (Notable)
Kenmare 1 WSW	United States	Record daily precipitation	33.8 mm (1.3 in)	36 of 100 (Notable)
Post	United States	Record daily precipitation	67.6 mm (2.7 in)	36 of 100 (Notable)
Bozeman Montana State UNIV	United States	Record low maximum temperature	9.4 C (48.9 F)	35 of 100 (Notable)
Haxby 18 SW	United States	Record daily precipitation	26.7 mm (1.1 in)	35 of 100 (Notable)
Norris Madison Pwr House	United States	Record daily precipitation	47.8 mm (1.9 in)	35 of 100 (Notable)
Holdrege	United States	Record daily precipitation	55.1 mm (2.2 in)	35 of 100 (Notable)
Russell	Canada	Record daily precipitation	30.7 mm (1.2 in)	34 of 100 (Routine)
Toronto	Canada	Record high minimum temperature	23.9 C (75.0 F)	34 of 100 (Routine)
Walnut Creek 2 ESE	United States	Record low minimum temperature	5.6 C (42.1 F)	34 of 100 (Routine)
Beaver City	United States	Record daily precipitation	31.8 mm (1.3 in)	34 of 100 (Routine)
Klamath Falls 2 SSW	United States	Record low minimum temperature	-1.1 C (30.0 F)	34 of 100 (Routine)
Vancouver 4 NNE	United States	Record low minimum temperature	1.7 C (35.1 F)	34 of 100 (Routine)
Cedarville	United States	Record low minimum temperature	1.7 C (35.1 F)	33 of 100 (Routine)
Norris Madison Pwr House	United States	Record low maximum temperature	10.6 C (51.1 F)	33 of 100 (Routine)
White Sulphur Springs	United States	Record low maximum temperature	10.6 C (51.1 F)	33 of 100 (Routine)

Counts by Type and Timescale

874 records

Records set or tied on 1 September 1973 by type: Highest daily maximum 62, Lowest daily maximum 136, Highest daily minimum 215, Lowest daily minimum 147, Heaviest daily rainfall 313, Heaviest daily snowfall 1.

Records on 1 September 1973 by type
Record type	Records
Highest daily maximum	62
Lowest daily maximum	136
Highest daily minimum	215
Lowest daily minimum	147
Heaviest daily rainfall	313
Heaviest daily snowfall	1
Deepest snow cover	0

Records on 1 September 1973 by timescale: all-time 2, monthly 38, daily 834.

How Much Records Were Beaten By

691 broken records

Margins by which the 691 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 52.3. Ties are not counted.

Top 20 by Significance

1 September 1973

Top 20 records on 1 September 1973 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
1 September 1973	Fosston 1 E, US	monthly rain	138.9 mm (5.5 in)	50.0 mm (2.0 in)	42 years	68 of 100 (Major)
1 September 1973	Powell, US	daily rain	27.4 mm (1.1 in)	21.6 mm (0.9 in)	64 years	65 of 100 (Major)
1 September 1973	Minnedosa, CA	daily rain	53.3 mm (2.1 in)	27.6 mm (1.1 in)	52 years	63 of 100 (Major)
1 September 1973	Mahnomen, US	monthly rain	101.6 mm (4.0 in)	39.4 mm (1.6 in)	1 year	54 of 100 (Notable)
1 September 1973	Second Valley (Spring Grove), AU	daily rain	31.5 mm (1.2 in)	14.7 mm (0.6 in)	67 years	51 of 100 (Notable)
1 September 1973	Washburn, US	daily rain	26.2 mm (1.0 in)	16.0 mm (0.6 in)	76 years	51 of 100 (Notable)
1 September 1973	Cody, US	daily rain	26.9 mm (1.1 in)	19.3 mm (0.8 in)	43 years	51 of 100 (Notable)
1 September 1973	Red Lake Indian Agcy, US	daily rain	56.6 mm (2.2 in)	42.9 mm (1.7 in)	8 years	50 of 100 (Notable)
1 September 1973	Cartwright, CA	daily rain	26.2 mm (1.0 in)	19.6 mm (0.8 in)	76 years	49 of 100 (Notable)
1 September 1973	Elwood 8 S, US	daily rain	53.1 mm (2.1 in)	27.7 mm (1.1 in)	64 years	49 of 100 (Notable)
1 September 1973	Minden, US	daily rain	57.2 mm (2.3 in)	31.8 mm (1.3 in)	64 years	49 of 100 (Notable)
1 September 1973	Big Trout Lake, CA	monthly rain	83.8 mm (3.3 in)	19.8 mm (0.8 in)	29 years	48 of 100 (Notable)
1 September 1973	Hobson, US	daily rain	30.0 mm (1.2 in)	21.1 mm (0.8 in)	10 years	48 of 100 (Notable)
1 September 1973	Victor 4 N, US	daily rain	33.3 mm (1.3 in)	27.7 mm (1.1 in)	39 years	48 of 100 (Notable)
1 September 1973	Pierson, CA	daily rain	33.0 mm (1.3 in)	17.8 mm (0.7 in)	63 years	47 of 100 (Notable)
1 September 1973	American Falls 6 NE, US	daily low max	13.3 C (55.9 F)	8.9 C (16.0 F)	76 years	47 of 100 (Notable)
1 September 1973	Roy 8 NE, US	daily rain	29.5 mm (1.2 in)	26.2 mm (1.0 in)	16 years	47 of 100 (Notable)
1 September 1973	Piracicaba, BR	daily rain	45.0 mm (1.8 in)	36.4 mm (1.4 in)	12 years	46 of 100 (Notable)
1 September 1973	Waskada, CA	daily rain	33.0 mm (1.3 in)	27.2 mm (1.1 in)	36 years	46 of 100 (Notable)
1 September 1973	Bemidji, US	monthly rain	71.9 mm (2.8 in)	7.1 mm (0.28 in)	68 years	44 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 1973

Records set or tied on this calendar date in each year from 1797 to 1973. 1973 had 874 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 1973-09-01: 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 2026-10-17 (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).

Histogram of margins by which records were beaten on 1 September 1973
Margin	Records
0 to 10	576
10 to 20	73
20 to 30	25
30 to 40	10
40 to 50	5
50 to 60	2