Weather Records on 12 September 1938

332 weather records were set or tied worldwide on 12 September 1938. Highest significance: Waukomis, US.

Key Facts for 12 September 1938

On 12 September 1938, 332 weather records were set or tied at long-record stations worldwide.
151 were record highs and 29 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 4 monthly and 328 daily.
Waukomis set a monthly record daily precipitation of 125.2 mm (4.9 in) on 12 September 1938.
Across 164 earlier years (1793 to 2026) the same calendar date averaged 414 records.

Record Map

332 stations

332 station records on 12 September 1938 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 12 September 1938: highest significance records shown on the map
Station	Country	Type	Value	Significance
Waukomis	United States	Record daily precipitation	125.2 mm (4.9 in)	58 of 100 (Notable)
Cambridge St Hospital	United States	Record daily precipitation	61.0 mm (2.4 in)	50 of 100 (Notable)
Portsmouth-Sciotoville	United States	Record daily precipitation	48.3 mm (1.9 in)	49 of 100 (Notable)
Cleveland 2717 Euclid	United States	Record daily precipitation	84.8 mm (3.3 in)	48 of 100 (Notable)
Ft Dodge 5NNW	United States	Record daily precipitation	125.2 mm (4.9 in)	46 of 100 (Notable)
Bucyrus	United States	Record daily precipitation	58.4 mm (2.3 in)	46 of 100 (Notable)
Madison	United States	Record daily precipitation	78.7 mm (3.1 in)	45 of 100 (Notable)
Stanton	United States	Record daily precipitation	59.2 mm (2.3 in)	41 of 100 (Notable)
Feodosiia	Ukraine	Record daily precipitation	57.8 mm (2.3 in)	38 of 100 (Notable)
Claysville 3 W	United States	Record daily precipitation	42.2 mm (1.7 in)	38 of 100 (Notable)
Wellsburg Wtr Trmt Pl	United States	Record daily precipitation	38.9 mm (1.5 in)	36 of 100 (Notable)
Poronajsk	Russia	Record daily precipitation	65.1 mm (2.6 in)	35 of 100 (Notable)
Fullerton	United States	Record daily precipitation	57.9 mm (2.3 in)	33 of 100 (Routine)
Britt 3E	United States	Record daily precipitation	57.9 mm (2.3 in)	32 of 100 (Routine)
Gunnedah Pool	Australia	Record daily precipitation	41.9 mm (1.6 in)	31 of 100 (Routine)
Leoti	United States	Record daily precipitation	49.3 mm (1.9 in)	31 of 100 (Routine)
Millport 4 NE	United States	Record daily precipitation	47.2 mm (1.9 in)	31 of 100 (Routine)
Brinkley	United States	Record high minimum temperature	28.9 C (84.0 F)	30 of 100 (Routine)
Casey	United States	Record daily precipitation	32.0 mm (1.3 in)	29 of 100 (Routine)
Webster City	United States	Record daily precipitation	85.1 mm (3.4 in)	29 of 100 (Routine)
New Castle 1 N	United States	Record daily precipitation	35.6 mm (1.4 in)	29 of 100 (Routine)
Krishnapatnam	India	Record daily precipitation	69.3 mm (2.7 in)	28 of 100 (Routine)
Genoa 2 W	United States	Record daily precipitation	78.7 mm (3.1 in)	28 of 100 (Routine)
Warren 3 S	United States	Record daily precipitation	43.9 mm (1.7 in)	28 of 100 (Routine)
Hugoton	United States	Record daily precipitation	30.7 mm (1.2 in)	27 of 100 (Routine)
Venukonda	India	Record daily precipitation	26.4 mm (1.0 in)	26 of 100 (Routine)
Wichita Mtn Wr	United States	Record daily precipitation	29.2 mm (1.1 in)	26 of 100 (Routine)
Isis Junction Railway STN	Australia	Record daily precipitation	36.6 mm (1.4 in)	25 of 100 (Routine)
Moose Factory	Canada	Record high minimum temperature	15.0 C (59.0 F)	25 of 100 (Routine)
Grantsville	United States	Record daily precipitation	27.7 mm (1.1 in)	25 of 100 (Routine)
Bancroft	United States	Record daily precipitation	33.0 mm (1.3 in)	25 of 100 (Routine)
Onawa 3NW	United States	Record daily precipitation	47.8 mm (1.9 in)	23 of 100 (Routine)
Cheboygan	United States	Record daily precipitation	61.2 mm (2.4 in)	23 of 100 (Routine)
W Pt	United States	Record daily precipitation	37.3 mm (1.5 in)	23 of 100 (Routine)
Waterloo	United States	Record daily precipitation	29.7 mm (1.2 in)	22 of 100 (Routine)
Johnsonville	United States	Record daily precipitation	50.3 mm (2.0 in)	22 of 100 (Routine)
Claude	United States	Record daily precipitation	31.2 mm (1.2 in)	22 of 100 (Routine)
Boggabilla Post Office	Australia	Record daily precipitation	34.0 mm (1.3 in)	21 of 100 (Routine)
Haparanda	Sweden	Record daily precipitation	27.0 mm (1.1 in)	21 of 100 (Routine)
Durham	United Kingdom	Record high minimum temperature	14.4 C (57.9 F)	21 of 100 (Routine)
Winchendon	United States	Record daily precipitation	35.1 mm (1.4 in)	21 of 100 (Routine)
Durant	United States	Record daily precipitation	49.8 mm (2.0 in)	21 of 100 (Routine)
Huntsville	United States	Record daily precipitation	43.2 mm (1.7 in)	21 of 100 (Routine)
Burrwood Wb	United States	Record low minimum temperature	18.3 C (64.9 F)	21 of 100 (Routine)
Yerevan	Armenia	Record daily precipitation	23.1 mm (0.9 in)	20 of 100 (Routine)
Glenwood Spgs #2	United States	Record daily precipitation	19.1 mm (0.8 in)	20 of 100 (Routine)
Lake Moraine	United States	Record daily precipitation	24.1 mm (0.9 in)	20 of 100 (Routine)
Maristova	Norway	Record daily precipitation	24.3 mm (1.0 in)	20 of 100 (Routine)
Parsons 3 SE	United States	Record daily precipitation	22.9 mm (0.9 in)	20 of 100 (Routine)
Marburg - Warrego Highway	Australia	Record daily precipitation	23.9 mm (0.9 in)	20 of 100 (Routine)
Collerina (Corrella)	Australia	Record daily precipitation	5.1 mm (0.20 in)	20 of 100 (Routine)
Kherson	Ukraine	Record daily precipitation	8.7 mm (0.34 in)	20 of 100 (Routine)
Holmogadd A	Sweden	Record daily precipitation	21.0 mm (0.8 in)	20 of 100 (Routine)
Taos	United States	Record daily precipitation	11.4 mm (0.4 in)	20 of 100 (Routine)
Soyland I Gjesdal	Norway	Record daily precipitation	36.3 mm (1.4 in)	20 of 100 (Routine)
Sviland	Norway	Record daily precipitation	33.0 mm (1.3 in)	20 of 100 (Routine)
Manassa	United States	Record daily precipitation	12.7 mm (0.5 in)	20 of 100 (Routine)
Iowa Falls	United States	Record daily precipitation	50.3 mm (2.0 in)	20 of 100 (Routine)
Uniontown 1 NE	United States	Record daily precipitation	34.0 mm (1.3 in)	20 of 100 (Routine)
Bowling Green Warren Co AP	United States	Record daily precipitation	30.5 mm (1.2 in)	20 of 100 (Routine)

Counts by Type and Timescale

332 records

Records set or tied on 12 September 1938 by type: Highest daily maximum 21, Lowest daily maximum 23, Highest daily minimum 130, Lowest daily minimum 6, Heaviest daily rainfall 152.

Records on 12 September 1938 by type
Record type	Records
Highest daily maximum	21
Lowest daily maximum	23
Highest daily minimum	130
Lowest daily minimum	6
Heaviest daily rainfall	152
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 12 September 1938 by timescale: all-time 0, monthly 4, daily 328.

How Much Records Were Beaten By

255 broken records

Margins by which the 255 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 90.9. Ties are not counted.

Top 20 by Significance

12 September 1938

Top 20 records on 12 September 1938 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
12 September 1938	Waukomis, US	monthly rain	125.2 mm (4.9 in)	49.0 mm (1.9 in)	35 years	58 of 100 (Notable)
12 September 1938	Cambridge St Hospital, US	daily rain	61.0 mm (2.4 in)	47.8 mm (1.9 in)	20 years	50 of 100 (Notable)
12 September 1938	Portsmouth-Sciotoville, US	daily rain	48.3 mm (1.9 in)	35.6 mm (1.4 in)	36 years	49 of 100 (Notable)
12 September 1938	Cleveland 2717 Euclid, US	daily rain	84.8 mm (3.3 in)	26.4 mm (1.0 in)	59 years	48 of 100 (Notable)
12 September 1938	Ft Dodge 5NNW, US	daily rain	125.2 mm (4.9 in)	90.9 mm (3.6 in)	9 years	46 of 100 (Notable)
12 September 1938	Bucyrus, US	daily rain	58.4 mm (2.3 in)	44.4 mm (1.7 in)	12 years	46 of 100 (Notable)
12 September 1938	Madison, US	daily rain	78.7 mm (3.1 in)	58.1 mm (2.3 in)	4 years	45 of 100 (Notable)
12 September 1938	Stanton, US	daily rain	59.2 mm (2.3 in)	38.6 mm (1.5 in)	39 years	41 of 100 (Notable)
12 September 1938	Feodosiia, UA	monthly rain	57.8 mm (2.3 in)	11.6 mm (0.5 in)	33 years	38 of 100 (Notable)
12 September 1938	Claysville 3 W, US	daily rain	42.2 mm (1.7 in)	31.3 mm (1.2 in)	20 years	38 of 100 (Notable)
12 September 1938	Wellsburg Wtr Trmt Pl, US	daily rain	38.9 mm (1.5 in)	19.8 mm (0.8 in)	58 years	36 of 100 (Notable)
12 September 1938	Poronajsk, RU	daily rain	65.1 mm (2.6 in)	33.2 mm (1.3 in)	23 years	35 of 100 (Notable)
12 September 1938	Fullerton, US	daily rain	57.9 mm (2.3 in)	49.5 mm (1.9 in)	9 years	33 of 100 (Routine)
12 September 1938	Britt 3E, US	daily rain	57.9 mm (2.3 in)	28.4 mm (1.1 in)	28 years	32 of 100 (Routine)
12 September 1938	Gunnedah Pool, AU	daily rain	41.9 mm (1.6 in)	19.0 mm (0.7 in)	13 years	31 of 100 (Routine)
12 September 1938	Leoti, US	daily rain	49.3 mm (1.9 in)	38.4 mm (1.5 in)	4 years	31 of 100 (Routine)
12 September 1938	Millport 4 NE, US	daily rain	47.2 mm (1.9 in)	29.4 mm (1.2 in)	4 years	31 of 100 (Routine)
12 September 1938	Brinkley, US	daily high min	28.9 C (84.0 F)	5.0 C (9.0 F)	50 years	30 of 100 (Routine)
12 September 1938	Casey, US	daily rain	32.0 mm (1.3 in)	17.8 mm (0.7 in)	44 years	29 of 100 (Routine)
12 September 1938	Webster City, US	daily rain	85.1 mm (3.4 in)	40.9 mm (1.6 in)	5 years	29 of 100 (Routine)

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 1938

Records set or tied on this calendar date in each year from 1793 to 1938. 1938 had 332 records.

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

Records on 09-12 in each year
Year	Records
1793	2
1809	1
1813	1
1814	2
1834	1
1837	2
1839	1
1847	1
1848	1
1854	4
1859	2
1860	2
1865	2
1866	1
1867	1
1868	2
1869	1
1872	2
1876	1
1878	1
1880	1
1881	1
1882	1
1884	2
1885	2
1886	1
1887	2
1888	2
1889	1
1891	4
1892	1
1893	4
1894	1
1895	5
1896	2
1897	3
1898	3
1899	4
1900	1
1901	5
1902	11
1903	18
1904	7
1905	8
1906	24
1907	11
1908	12
1909	11
1910	4
1911	15
1912	20
1913	12
1914	49
1915	71
1916	21
1917	231
1918	42
1919	69
1920	49
1921	60
1922	136
1923	33
1924	177
1925	443
1926	89
1927	339
1928	155
1929	118
1930	198
1931	648
1932	199
1933	360
1934	176
1935	441
1936	515
1937	318
1938	332
1939	702
1940	891
1941	172
1942	337
1943	544
1944	393
1945	414
1946	302
1947	596
1948	292
1949	512
1950	578
1951	399
1952	575
1953	515
1954	313
1955	457
1956	389
1957	727
1958	783
1959	536
1960	772
1961	750
1962	407
1963	466
1964	836
1965	459
1966	416
1967	510
1968	428
1969	558
1970	619
1971	593
1972	430
1973	588
1974	575
1975	1,102
1976	539
1977	524
1978	952
1979	765
1980	511
1981	424
1982	993
1983	915
1984	700
1985	876
1986	787
1987	686
1988	997
1989	1,313
1990	1,001
1991	672
1992	767
1993	798
1994	550
1995	532
1996	1,014
1997	737
1998	1,770
1999	938
2000	1,188
2001	797
2002	883
2003	830
2004	653
2005	1,032
2006	963
2007	776
2008	1,213
2009	876
2010	939
2011	988
2012	639
2013	1,066
2014	1,374
2015	704
2016	748
2017	1,114
2018	595
2019	884
2020	566
2021	513
2022	739
2023	844
2024	1,009
2025	433
2026	627

Download the Data

Data for records on 1938-09-12: 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 2026-10-15. Last revised 15 October 2026 (2026-10-15).

Margin	Records
0 to 20	225
20 to 40	23
40 to 60	6
60 to 80	0
80 to 100	1