Weather Records on 12 September 1928

155 weather records were set or tied worldwide on 12 September 1928. Highest significance: La Harpe, US.

Key Facts for 12 September 1928

On 12 September 1928, 155 weather records were set or tied at long-record stations worldwide.
40 were record highs and 34 were record lows, counting maximum and minimum temperature.
By timescale, 1 were all-time records, 5 monthly and 149 daily.
La Harpe set a monthly record daily precipitation of 114.3 mm (4.5 in) on 12 September 1928.
Across 164 earlier years (1793 to 2026) the same calendar date averaged 415 records.

Record Map

155 stations

155 station records on 12 September 1928 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 12 September 1928: highest significance records shown on the map
Station	Country	Type	Value	Significance
La Harpe	United States	Record daily precipitation	114.3 mm (4.5 in)	44 of 100 (Notable)
Keosauqua	United States	Record daily precipitation	121.9 mm (4.8 in)	43 of 100 (Notable)
Edenton	United States	Record daily precipitation	40.6 mm (1.6 in)	41 of 100 (Notable)
Bonaparte 5 NE	United States	Record daily precipitation	129.5 mm (5.1 in)	39 of 100 (Notable)
Lenox	United States	Record daily precipitation	82.6 mm (3.3 in)	39 of 100 (Notable)
Gorin	United States	Record daily precipitation	75.2 mm (3.0 in)	35 of 100 (Notable)
Columbia Wb City	United States	Record daily precipitation	58.4 mm (2.3 in)	34 of 100 (Routine)
Brunswick	United States	Record daily precipitation	91.9 mm (3.6 in)	32 of 100 (Routine)
Fort Chipewyan	Canada	Record high maximum temperature	29.4 C (84.9 F)	31 of 100 (Routine)
Humboldt 3 W	United States	Record daily precipitation	45.2 mm (1.8 in)	31 of 100 (Routine)
Unionville	United States	Record daily precipitation	97.8 mm (3.9 in)	31 of 100 (Routine)
Gavle	Sweden	Record daily precipitation	33.3 mm (1.3 in)	30 of 100 (Routine)
Wentworth 2.5 WNW	United States	Record daily precipitation	49.5 mm (1.9 in)	30 of 100 (Routine)
Mt Pleasant 1 SW	United States	Record daily precipitation	75.4 mm (3.0 in)	28 of 100 (Routine)
Tyndall	United States	Record daily precipitation	35.8 mm (1.4 in)	28 of 100 (Routine)
Northfield	United States	Record daily precipitation	50.8 mm (2.0 in)	28 of 100 (Routine)
Oran-Hopital Militaire	Algeria	Record high minimum temperature	24.0 C (75.2 F)	27 of 100 (Routine)
Monmouth	United States	Record daily precipitation	53.3 mm (2.1 in)	27 of 100 (Routine)
Harrisonville	United States	Record daily precipitation	96.0 mm (3.8 in)	27 of 100 (Routine)
Lawrence	United States	Record daily precipitation	69.3 mm (2.7 in)	26 of 100 (Routine)
Hannibal 1 N	United States	Record daily precipitation	64.0 mm (2.5 in)	25 of 100 (Routine)
Mt Ayr	United States	Record daily precipitation	61.5 mm (2.4 in)	24 of 100 (Routine)
New Ulm 2 SE	United States	Record daily precipitation	110.5 mm (4.4 in)	24 of 100 (Routine)
Alexandria	United States	Record daily precipitation	40.6 mm (1.6 in)	24 of 100 (Routine)
Washington	United States	Record daily precipitation	41.9 mm (1.6 in)	23 of 100 (Routine)
Petoskey	United States	Record daily precipitation	30.0 mm (1.2 in)	23 of 100 (Routine)
Clarinda	United States	Record daily precipitation	102.1 mm (4.0 in)	21 of 100 (Routine)
Keokuk L&D 19	United States	Record daily precipitation	62.2 mm (2.4 in)	21 of 100 (Routine)
Pembroke Eddy Match	Canada	Record low maximum temperature	12.2 C (54.0 F)	20 of 100 (Routine)
Aleksandrovsk-Sahalinskij	Russia	Record high minimum temperature	15.2 C (59.4 F)	19 of 100 (Routine)
Bloomington Normal	United States	Record daily precipitation	27.7 mm (1.1 in)	19 of 100 (Routine)
Oskaloosa	United States	Record daily precipitation	39.9 mm (1.6 in)	19 of 100 (Routine)
Sac City	United States	Record daily precipitation	26.7 mm (1.1 in)	19 of 100 (Routine)
Portland	United States	Record low maximum temperature	12.2 C (54.0 F)	19 of 100 (Routine)
Kirksville	United States	Record daily precipitation	41.9 mm (1.6 in)	19 of 100 (Routine)
Santee	United States	Record daily precipitation	31.8 mm (1.3 in)	19 of 100 (Routine)
Dayville	United States	Record daily precipitation	10.2 mm (0.4 in)	19 of 100 (Routine)
Flandreau	United States	Record daily precipitation	38.9 mm (1.5 in)	19 of 100 (Routine)
Florence	United States	Record daily precipitation	45.7 mm (1.8 in)	19 of 100 (Routine)
Ottawa Cda	Canada	Record low maximum temperature	12.2 C (54.0 F)	18 of 100 (Routine)
Brome	Canada	Record daily precipitation	30.7 mm (1.2 in)	18 of 100 (Routine)
Syktyvkar	Russia	Record high minimum temperature	10.6 C (51.1 F)	18 of 100 (Routine)
Denison	United States	Record daily precipitation	25.1 mm (1.0 in)	18 of 100 (Routine)
Trenton	United States	Record daily precipitation	63.5 mm (2.5 in)	18 of 100 (Routine)
Saint Johnsbury	United States	Record daily precipitation	32.8 mm (1.3 in)	18 of 100 (Routine)
Poowong (Post Office)	Australia	Record daily precipitation	12.7 mm (0.5 in)	17 of 100 (Routine)
Ottumwa 1 WSW	United States	Record daily precipitation	49.5 mm (1.9 in)	17 of 100 (Routine)
Atchison	United States	Record daily precipitation	64.8 mm (2.6 in)	17 of 100 (Routine)
Zagreb-Gric	Croatia	Record high minimum temperature	17.9 C (64.2 F)	16 of 100 (Routine)
Tobolsk	Russia	Record high minimum temperature	12.8 C (55.0 F)	16 of 100 (Routine)
Orono	United States	Record daily precipitation	41.1 mm (1.6 in)	16 of 100 (Routine)
Lowell	United States	Record low maximum temperature	15.0 C (59.0 F)	16 of 100 (Routine)
Bird Island	United States	Record daily precipitation	77.5 mm (3.1 in)	16 of 100 (Routine)
Boonville	United States	Record daily precipitation	61.7 mm (2.4 in)	16 of 100 (Routine)
Fayette	United States	Record daily precipitation	55.6 mm (2.2 in)	16 of 100 (Routine)
Jacksonville	United States	Record low maximum temperature	14.4 C (57.9 F)	16 of 100 (Routine)
Weston 2 SE	United States	Record low maximum temperature	10.6 C (51.1 F)	16 of 100 (Routine)
Second Valley (Spring Grove)	Australia	Record daily precipitation	17.8 mm (0.7 in)	15 of 100 (Routine)
Pointe Au Pere	Canada	Record low minimum temperature	-1.1 C (30.0 F)	15 of 100 (Routine)
Mesa	United States	Record low minimum temperature	10.6 C (51.1 F)	15 of 100 (Routine)

Counts by Type and Timescale

155 records

Records set or tied on 12 September 1928 by type: Highest daily maximum 20, Lowest daily maximum 23, Highest daily minimum 20, Lowest daily minimum 11, Heaviest daily rainfall 81.

Records on 12 September 1928 by type
Record type	Records
Highest daily maximum	20
Lowest daily maximum	23
Highest daily minimum	20
Lowest daily minimum	11
Heaviest daily rainfall	81
Heaviest daily snowfall	0
Deepest snow cover	0

Records on 12 September 1928 by timescale: all-time 1, monthly 5, daily 149.

How Much Records Were Beaten By

124 broken records

Margins by which the 124 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 53.6. Ties are not counted.

Top 20 by Significance

12 September 1928

Top 20 records on 12 September 1928 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
12 September 1928	La Harpe, US	monthly rain	114.3 mm (4.5 in)	38.1 mm (1.5 in)	31 years	44 of 100 (Notable)
12 September 1928	Keosauqua, US	all-time rain	121.9 mm (4.8 in)	18.3 mm (0.7 in)	30 years	43 of 100 (Notable)
12 September 1928	Edenton, US	daily rain	40.6 mm (1.6 in)	38.1 mm (1.5 in)	55 years	41 of 100 (Notable)
12 September 1928	Bonaparte 5 NE, US	monthly rain	129.5 mm (5.1 in)	43.1 mm (1.7 in)	3 years	39 of 100 (Notable)
12 September 1928	Lenox, US	daily rain	82.6 mm (3.3 in)	53.6 mm (2.1 in)	22 years	39 of 100 (Notable)
12 September 1928	Gorin, US	daily rain	75.2 mm (3.0 in)	52.6 mm (2.1 in)	4 years	35 of 100 (Notable)
12 September 1928	Columbia Wb City, US	daily rain	58.4 mm (2.3 in)	43.2 mm (1.7 in)	29 years	34 of 100 (Routine)
12 September 1928	Brunswick, US	daily rain	91.9 mm (3.6 in)	36.8 mm (1.4 in)	29 years	32 of 100 (Routine)
12 September 1928	Fort Chipewyan, CA	monthly high max	29.4 C (84.9 F)	3.3 C (5.9 F)	38 years	31 of 100 (Routine)
12 September 1928	Humboldt 3 W, US	daily rain	45.2 mm (1.8 in)	32.0 mm (1.3 in)	19 years	31 of 100 (Routine)
12 September 1928	Unionville, US	monthly rain	97.8 mm (3.9 in)	16.5 mm (0.6 in)	25 years	31 of 100 (Routine)
12 September 1928	Gavle, SE	daily rain	33.3 mm (1.3 in)	6.0 mm (0.24 in)	46 years	30 of 100 (Routine)
12 September 1928	Wentworth 2.5 WNW, US	daily rain	49.5 mm (1.9 in)	25.4 mm (1.0 in)	14 years	30 of 100 (Routine)
12 September 1928	Mt Pleasant 1 SW, US	daily rain	75.4 mm (3.0 in)	42.4 mm (1.7 in)	3 years	28 of 100 (Routine)
12 September 1928	Tyndall, US	daily rain	35.8 mm (1.4 in)	22.6 mm (0.9 in)	25 years	28 of 100 (Routine)
12 September 1928	Northfield, US	daily rain	50.8 mm (2.0 in)	20.8 mm (0.8 in)	3 years	28 of 100 (Routine)
12 September 1928	Oran-Hopital Militaire, DZ	daily high min	24.0 C (75.2 F)	2.2 C (4.0 F)	36 years	27 of 100 (Routine)
12 September 1928	Monmouth, US	daily rain	53.3 mm (2.1 in)	33.0 mm (1.3 in)	18 years	27 of 100 (Routine)
12 September 1928	Harrisonville, US	daily rain	96.0 mm (3.8 in)	38.6 mm (1.5 in)	15 years	27 of 100 (Routine)
12 September 1928	Lawrence, US	daily rain	69.3 mm (2.7 in)	5.8 mm (0.23 in)	53 years	26 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 1928

Records set or tied on this calendar date in each year from 1793 to 1928. 1928 had 155 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 1928-09-12: 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).

Histogram of margins by which records were beaten on 12 September 1928
Margin	Records
0 to 10	86
10 to 20	16
20 to 30	10
30 to 40	7
40 to 50	3
50 to 60	2