Weather Records on 21 September 1946

176 weather records were set or tied worldwide on 21 September 1946. Highest significance: Mikhailovka, KZ.

Key Facts for 21 September 1946

On 21 September 1946, 176 weather records were set or tied at long-record stations worldwide.
44 were record highs and 21 were record lows, counting maximum and minimum temperature.
By timescale, 0 were all-time records, 6 monthly and 170 daily.
Mikhailovka set a monthly record daily precipitation of 47.3 mm (1.9 in) on 21 September 1946.
Across 155 earlier years (1805 to 2026) the same calendar date averaged 453 records.

Record Map

176 stations

176 station records on 21 September 1946 are marked on the map, coloured by record type. Dot size shows the significance score. Made with Natural Earth.

Weather records on 21 September 1946: highest significance records shown on the map
Station	Country	Type	Value	Significance
Mikhailovka	Kazakhstan	Record daily precipitation	47.3 mm (1.9 in)	59 of 100 (Notable)
Bellata (Aberfeldie)	Australia	Record daily precipitation	40.4 mm (1.6 in)	54 of 100 (Notable)
Queen Charlotte City	Canada	Record daily precipitation	81.3 mm (3.2 in)	47 of 100 (Notable)
Crohamhurst	Australia	Record daily precipitation	36.1 mm (1.4 in)	39 of 100 (Notable)
Fairymead Sugar Mill	Australia	Record daily precipitation	28.4 mm (1.1 in)	38 of 100 (Notable)
Mount Larcom Post Office	Australia	Record daily precipitation	31.5 mm (1.2 in)	37 of 100 (Notable)
Atalaia	Brazil	Record daily precipitation	44.8 mm (1.8 in)	36 of 100 (Notable)
Urawilkie	Australia	Record daily precipitation	38.4 mm (1.5 in)	35 of 100 (Notable)
Punganur	India	Record daily precipitation	154.4 mm (6.1 in)	33 of 100 (Routine)
Solomons	United States	Record daily precipitation	87.6 mm (3.4 in)	32 of 100 (Routine)
Beaufort	United States	Record daily precipitation	73.7 mm (2.9 in)	31 of 100 (Routine)
Mt Wx	United States	Record daily precipitation	83.8 mm (3.3 in)	30 of 100 (Routine)
Chipurupally	India	Record daily precipitation	47.5 mm (1.9 in)	28 of 100 (Routine)
Gangarampur	India	Record daily precipitation	71.1 mm (2.8 in)	28 of 100 (Routine)
Waynesville 1 E	United States	Record high minimum temperature	22.2 C (72.0 F)	28 of 100 (Routine)
Coolatai (Willunga)	Australia	Record daily precipitation	55.9 mm (2.2 in)	26 of 100 (Routine)
Hagerstown 1E	United States	Record daily precipitation	52.3 mm (2.1 in)	25 of 100 (Routine)
Keedysville	United States	Record daily precipitation	50.8 mm (2.0 in)	25 of 100 (Routine)
Kingston Queens U	Canada	Record high minimum temperature	18.9 C (66.0 F)	24 of 100 (Routine)
Kojnas	Russia	Record low minimum temperature	-9.6 C (14.7 F)	24 of 100 (Routine)
Port Said	Egypt	Record high minimum temperature	25.0 C (77.0 F)	23 of 100 (Routine)
Gayndah Post Office	Australia	Record high minimum temperature	20.4 C (68.7 F)	22 of 100 (Routine)
Alberni Beaver Creek	Canada	Record low minimum temperature	-1.1 C (30.0 F)	22 of 100 (Routine)
Idaho City	United States	Record high minimum temperature	9.4 C (48.9 F)	22 of 100 (Routine)
Fallston	United States	Record daily precipitation	55.9 mm (2.2 in)	22 of 100 (Routine)
El Suez	Egypt	Record high maximum temperature	38.0 C (100.4 F)	21 of 100 (Routine)
Ilulissat (Jakobshavn)	Greenland [Denmark]	Record low minimum temperature	-10.3 C (13.5 F)	21 of 100 (Routine)
Olekminsk	Russia	Record low minimum temperature	-5.5 C (22.1 F)	21 of 100 (Routine)
Harpers Ferry River	United States	Record daily precipitation	53.3 mm (2.1 in)	21 of 100 (Routine)
Uppsala_Aut	Sweden	Record daily precipitation	20.8 mm (0.8 in)	20 of 100 (Routine)
Zametchino	Russia	Record daily precipitation	23.8 mm (0.9 in)	20 of 100 (Routine)
Orskar_A	Sweden	Record daily precipitation	19.6 mm (0.8 in)	20 of 100 (Routine)
Thomas River (Sar)	South Africa	Record daily precipitation	18.5 mm (0.7 in)	20 of 100 (Routine)
Marloo	Australia	Record daily precipitation	17.8 mm (0.7 in)	20 of 100 (Routine)
Vasteras-Hasslo	Sweden	Record daily precipitation	12.8 mm (0.5 in)	20 of 100 (Routine)
Novosibirsk	Russia	Record daily precipitation	14.1 mm (0.6 in)	20 of 100 (Routine)
Niznij Novgorod	Russia	Record daily precipitation	20.7 mm (0.8 in)	20 of 100 (Routine)
Berry Brow	Australia	Record daily precipitation	21.8 mm (0.9 in)	20 of 100 (Routine)
Werris Creek Post Office	Australia	Record daily precipitation	10.9 mm (0.4 in)	20 of 100 (Routine)
Waseca	Canada	Record daily snowfall	4.6 cm (1.8 in)	20 of 100 (Routine)
Rowena (Waroonga)	Australia	Record daily precipitation	10.2 mm (0.4 in)	20 of 100 (Routine)
Uralsk	Kazakhstan	Record daily precipitation	12.0 mm (0.5 in)	20 of 100 (Routine)
North Lakhimpur	India	Record daily precipitation	101.6 mm (4.0 in)	20 of 100 (Routine)
Poretskoye	Russia	Record daily precipitation	16.8 mm (0.7 in)	20 of 100 (Routine)
Payette	United States	Record high minimum temperature	12.8 C (55.0 F)	20 of 100 (Routine)
Charlottesville 2W	United States	Record daily precipitation	35.1 mm (1.4 in)	20 of 100 (Routine)
Worland	United States	Record daily precipitation	6.1 mm (0.24 in)	20 of 100 (Routine)
Kilmorey	Australia	Record daily precipitation	8.9 mm (0.35 in)	19 of 100 (Routine)
Mungindi Post Office	Australia	Record daily precipitation	24.4 mm (1.0 in)	19 of 100 (Routine)
Beulah	Australia	Record daily precipitation	16.3 mm (0.6 in)	19 of 100 (Routine)
Illerbrun	Canada	Record daily snowfall	3.0 cm (1.2 in)	19 of 100 (Routine)
Sunbaras Sr	India	Record daily precipitation	63.5 mm (2.5 in)	19 of 100 (Routine)
Kumily	India	Record daily precipitation	41.9 mm (1.6 in)	19 of 100 (Routine)
Andenes	Norway	Record high minimum temperature	10.8 C (51.4 F)	19 of 100 (Routine)
Stockholm	Sweden	Record daily precipitation	24.8 mm (1.0 in)	19 of 100 (Routine)
Marianna 2 S	United States	Record daily precipitation	18.0 mm (0.7 in)	19 of 100 (Routine)
Roebling	United States	Record high minimum temperature	23.9 C (75.0 F)	19 of 100 (Routine)
Tishomingo Natl Wr	United States	Record daily precipitation	32.0 mm (1.3 in)	19 of 100 (Routine)
Ganca	Azerbaijan	Record high maximum temperature	34.6 C (94.3 F)	18 of 100 (Routine)
Pacific Salt	Australia	Record daily precipitation	4.8 mm (0.19 in)	18 of 100 (Routine)

Counts by Type and Timescale

176 records

Records set or tied on 21 September 1946 by type: Highest daily maximum 20, Lowest daily maximum 9, Highest daily minimum 24, Lowest daily minimum 12, Heaviest daily rainfall 108, Heaviest daily snowfall 3.

Records on 21 September 1946 by type
Record type	Records
Highest daily maximum	20
Lowest daily maximum	9
Highest daily minimum	24
Lowest daily minimum	12
Heaviest daily rainfall	108
Heaviest daily snowfall	3
Deepest snow cover	0

Records on 21 September 1946 by timescale: all-time 0, monthly 6, daily 170.

How Much Records Were Beaten By

156 broken records

Margins by which the 156 broken records beat the old ones, in degrees Celsius for temperature and millimetres for precipitation and snow; the largest margin was 46.0. Ties are not counted.

Top 20 by Significance

21 September 1946

Top 20 records on 21 September 1946 by significance
Date	Station	Record	Value	Beat old record by	Old record stood	Significance
21 September 1946	Mikhailovka, KZ	monthly rain	47.3 mm (1.9 in)	17.7 mm (0.7 in)	18 years	59 of 100 (Notable)
21 September 1946	Bellata (Aberfeldie), AU	daily rain	40.4 mm (1.6 in)	39.6 mm (1.6 in)	37 years	54 of 100 (Notable)
21 September 1946	Queen Charlotte City, CA	monthly rain	81.3 mm (3.2 in)	27.2 mm (1.1 in)	23 years	47 of 100 (Notable)
21 September 1946	Crohamhurst, AU	daily rain	36.1 mm (1.4 in)	28.2 mm (1.1 in)	32 years	39 of 100 (Notable)
21 September 1946	Fairymead Sugar Mill, AU	daily rain	28.4 mm (1.1 in)	28.1 mm (1.1 in)	31 years	38 of 100 (Notable)
21 September 1946	Mount Larcom Post Office, AU	daily rain	31.5 mm (1.2 in)	31.5 mm (1.2 in)	33 years	37 of 100 (Notable)
21 September 1946	Atalaia, BR	daily rain	44.8 mm (1.8 in)	18.4 mm (0.7 in)	28 years	36 of 100 (Notable)
21 September 1946	Urawilkie, AU	daily rain	38.4 mm (1.5 in)	15.5 mm (0.6 in)	48 years	35 of 100 (Notable)
21 September 1946	Punganur, IN	monthly rain	154.4 mm (6.1 in)	23.8 mm (0.9 in)	25 years	33 of 100 (Routine)
21 September 1946	Solomons, US	daily rain	87.6 mm (3.4 in)	39.6 mm (1.6 in)	9 years	32 of 100 (Routine)
21 September 1946	Beaufort, US	daily rain	73.7 mm (2.9 in)	34.6 mm (1.4 in)	40 years	31 of 100 (Routine)
21 September 1946	Mt Wx, US	daily rain	83.8 mm (3.3 in)	38.1 mm (1.5 in)	23 years	30 of 100 (Routine)
21 September 1946	Chipurupally, IN	daily rain	47.5 mm (1.9 in)	23.9 mm (0.9 in)	44 years	28 of 100 (Routine)
21 September 1946	Gangarampur, IN	daily rain	71.1 mm (2.8 in)	38.1 mm (1.5 in)	44 years	28 of 100 (Routine)
21 September 1946	Waynesville 1 E, US	monthly high min	22.2 C (72.0 F)	2.2 C (4.0 F)	28 years	28 of 100 (Routine)
21 September 1946	Coolatai (Willunga), AU	monthly rain	55.9 mm (2.2 in)	5.9 mm (0.23 in)	19 years	26 of 100 (Routine)
21 September 1946	Hagerstown 1E, US	daily rain	52.3 mm (2.1 in)	14.7 mm (0.6 in)	32 years	25 of 100 (Routine)
21 September 1946	Keedysville, US	daily rain	50.8 mm (2.0 in)	16.5 mm (0.6 in)	32 years	25 of 100 (Routine)
21 September 1946	Kingston Queens U, CA	daily high min	18.9 C (66.0 F)	1.1 C (2.0 F)	50 years	24 of 100 (Routine)
21 September 1946	Kojnas, RU	monthly low min	-9.6 C (14.7 F)	1.5 C (2.7 F)	28 years	24 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

1805 to 1946

Records set or tied on this calendar date in each year from 1805 to 1946. 1946 had 176 records.

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

Records on 09-21 in each year
Year	Records
1805	1
1812	1
1825	2
1840	1
1841	1
1842	1
1848	1
1854	1
1856	2
1868	1
1872	2
1873	1
1877	1
1878	1
1881	1
1882	1
1884	1
1886	1
1888	2
1889	1
1891	10
1892	1
1893	10
1894	2
1895	3
1896	2
1897	6
1898	6
1899	3
1900	2
1901	5
1902	5
1903	8
1904	20
1905	12
1906	17
1907	10
1908	17
1909	10
1910	8
1911	18
1912	26
1913	37
1914	29
1915	34
1916	48
1917	28
1918	43
1919	54
1920	29
1921	64
1922	35
1923	232
1924	291
1925	278
1926	178
1927	165
1928	81
1929	232
1930	82
1931	681
1932	242
1933	193
1934	492
1935	199
1936	329
1937	487
1938	508
1939	308
1940	908
1941	416
1942	291
1943	407
1944	413
1945	507
1946	176
1947	534
1948	301
1949	298
1950	334
1951	241
1952	430
1953	382
1954	453
1955	752
1956	1,100
1957	366
1958	588
1959	513
1960	418
1961	441
1962	1,085
1963	306
1964	374
1965	1,088
1966	565
1967	577
1968	790
1969	593
1970	708
1971	645
1972	599
1973	421
1974	652
1975	528
1976	694
1977	918
1978	818
1979	736
1980	990
1981	696
1982	1,484
1983	2,207
1984	707
1985	796
1986	671
1987	965
1988	557
1989	1,002
1990	716
1991	1,021
1992	752
1993	911
1994	713
1995	2,002
1996	1,233
1997	1,112
1998	1,481
1999	1,025
2000	884
2001	718
2002	696
2003	959
2004	888
2005	1,143
2006	920
2007	742
2008	740
2009	715
2010	1,290
2011	542
2012	595
2013	769
2014	716
2015	565
2016	989
2017	1,178
2018	1,051
2019	833
2020	580
2021	465
2022	1,049
2023	783
2024	470
2025	588
2026	469

Download the Data

Data for records on 1946-09-21: 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 2026-10-14 (14 October 2026). Records are computed by this site and are not official.

Data as of 2026-10-12. Last revised 12 October 2026 (2026-10-12).

Margin	Records
0 to 10	121
10 to 20	18
20 to 30	8
30 to 40	7
40 to 50	2